首页 > 最新文献

Zoological Letters最新文献

英文 中文
Potential of Garra rufa as a novel high-temperature resistant model fish: a review on current and future approaches.
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2025-02-27 DOI: 10.1186/s40851-025-00249-0
Yasuhito Shimada, Baki Aydın, Koto Kon-Nanjo, Kiki Syaputri Handayani, Victor David Nico Gultom, Oleg Simakov, Fahrurrozi, Tetsuo Kon

Garra rufa, commonly known as the "doctor fish", is a freshwater cyprinid native to warm regions of the Middle East. Since the late twentieth century, it has been widely utilized in spas for alternative therapeutics and fish pedicures (or manicures) for dermatological diseases such as psoriasis and eczema. Owing to its unique characteristics, there is growing interest in exploring various applications of G. rufa. This review provides a comprehensive summary of the phylogenetic position, ecology, biological characteristics, and breeding methods of G. rufa, and provides insights into its use as a therapeutic fish. Notably, the ability of G. rufa to thrive in high-temperature environments exceeding 37 °C distinguishes it from other cyprinids and suggests its potential as a model for human diseases, such as human infectious diseases, and in use in cancer xenograft models for high-throughput drug screening. The ongoing genome sequencing project for G. rufa aims to elucidate the mechanisms underlying its high-temperature tolerance and offers valuable genomic resources. These efforts have resulted in significant advances in fish aquaculture, species conservation, and biomedical research.

{"title":"Potential of Garra rufa as a novel high-temperature resistant model fish: a review on current and future approaches.","authors":"Yasuhito Shimada, Baki Aydın, Koto Kon-Nanjo, Kiki Syaputri Handayani, Victor David Nico Gultom, Oleg Simakov, Fahrurrozi, Tetsuo Kon","doi":"10.1186/s40851-025-00249-0","DOIUrl":"10.1186/s40851-025-00249-0","url":null,"abstract":"<p><p>Garra rufa, commonly known as the \"doctor fish\", is a freshwater cyprinid native to warm regions of the Middle East. Since the late twentieth century, it has been widely utilized in spas for alternative therapeutics and fish pedicures (or manicures) for dermatological diseases such as psoriasis and eczema. Owing to its unique characteristics, there is growing interest in exploring various applications of G. rufa. This review provides a comprehensive summary of the phylogenetic position, ecology, biological characteristics, and breeding methods of G. rufa, and provides insights into its use as a therapeutic fish. Notably, the ability of G. rufa to thrive in high-temperature environments exceeding 37 °C distinguishes it from other cyprinids and suggests its potential as a model for human diseases, such as human infectious diseases, and in use in cancer xenograft models for high-throughput drug screening. The ongoing genome sequencing project for G. rufa aims to elucidate the mechanisms underlying its high-temperature tolerance and offers valuable genomic resources. These efforts have resulted in significant advances in fish aquaculture, species conservation, and biomedical research.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"11 1","pages":"3"},"PeriodicalIF":1.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11869722/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143525244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of temperature cycles on the sleep-like state in Hydra vulgaris.
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2025-01-28 DOI: 10.1186/s40851-025-00248-1
Aya Sato, Manabu Sekiguchi, Koga Nakada, Taishi Yoshii, Taichi Q Itoh

Background: Sleep is a conserved physiological phenomenon across species. It is mainly controlled by two processes: a circadian clock that regulates the timing of sleep and a homeostat that regulates the sleep drive. Even cnidarians, such as Hydra and jellyfish, which lack a brain, display sleep-like states. However, the manner in which environmental cues affect sleep-like states in these organisms remains unknown. In the present study, we investigated the effects of light and temperature cycles on the sleep-like state in Hydra vulgaris.

Results: Our findings indicate that Hydra responds to temperature cycles with a difference of up to 5° C, resulting in decreased sleep duration under light conditions and increased sleep duration in dark conditions. Furthermore, our results reveal that Hydra prioritizes temperature changes over light as an environmental cue. Additionally, our body resection experiments show tissue-specific responsiveness in the generation ofthe sleep-like state under different environmental cues. Specifically, the upper body can generate the sleep-like state in response to a single environmental cue. In contrast, the lower body did not respond to 12-h light-dark cycles at a constant temperature.

Conclusions: These findings indicate that both light and temperature influence the regulation of the sleep-like state in Hydra. Moreover, these observations highlight the existence of distinct regulatory mechanisms that govern patterns of the sleep-like state in brainless organisms, suggesting the potential involvement of specific regions for responsiveness of environmental cues for regulation of the sleep-like state.

{"title":"Effect of temperature cycles on the sleep-like state in Hydra vulgaris.","authors":"Aya Sato, Manabu Sekiguchi, Koga Nakada, Taishi Yoshii, Taichi Q Itoh","doi":"10.1186/s40851-025-00248-1","DOIUrl":"10.1186/s40851-025-00248-1","url":null,"abstract":"<p><strong>Background: </strong>Sleep is a conserved physiological phenomenon across species. It is mainly controlled by two processes: a circadian clock that regulates the timing of sleep and a homeostat that regulates the sleep drive. Even cnidarians, such as Hydra and jellyfish, which lack a brain, display sleep-like states. However, the manner in which environmental cues affect sleep-like states in these organisms remains unknown. In the present study, we investigated the effects of light and temperature cycles on the sleep-like state in Hydra vulgaris.</p><p><strong>Results: </strong>Our findings indicate that Hydra responds to temperature cycles with a difference of up to 5° C, resulting in decreased sleep duration under light conditions and increased sleep duration in dark conditions. Furthermore, our results reveal that Hydra prioritizes temperature changes over light as an environmental cue. Additionally, our body resection experiments show tissue-specific responsiveness in the generation ofthe sleep-like state under different environmental cues. Specifically, the upper body can generate the sleep-like state in response to a single environmental cue. In contrast, the lower body did not respond to 12-h light-dark cycles at a constant temperature.</p><p><strong>Conclusions: </strong>These findings indicate that both light and temperature influence the regulation of the sleep-like state in Hydra. Moreover, these observations highlight the existence of distinct regulatory mechanisms that govern patterns of the sleep-like state in brainless organisms, suggesting the potential involvement of specific regions for responsiveness of environmental cues for regulation of the sleep-like state.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"11 1","pages":"2"},"PeriodicalIF":1.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773864/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143061496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatially ordered recruitment of fast muscles in accordance with movement strengths in larval zebrafish. 斑马鱼幼鱼快速肌肉的空间有序招募与运动强度一致。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2025-01-03 DOI: 10.1186/s40851-024-00247-8
Sayaka Shimizu, Taisei Katayama, Nozomi Nishiumi, Masashi Tanimoto, Yukiko Kimura, Shin-Ichi Higashijima

In vertebrates, skeletal muscle comprises fast and slow fibers. Slow and fast muscle cells in fish are spatially segregated; slow muscle cells are located only in a superficial region, and comprise a small fraction of the total muscle cell mass. Slow muscles support low-speed, low-force movements, while fast muscles are responsible for high-speed, high-force movements. However, speed and strength of movement are not binary states, but rather fall on a continuum. This raises the question of whether any recruitment patterns exist within fast muscles, which constitute the majority of muscle cell mass. In the present study, we investigated activation patterns of trunk fast muscles during movements of varying speeds and strengths using larval zebrafish. We employed two complementary methods: calcium imaging and electrophysiology. The results obtained from both methods supported the conclusion that there are spatially-ordered recruitment patterns in fast muscle cells. During weaker/slower movements, only the lateral portion of fast muscle cells is recruited. As the speed or strength of the movements increases, more fast muscle cells are recruited in a spatially-ordered manner, progressively from lateral to medial. We also conducted anatomical studies to examine muscle fiber size. The results of those experiments indicated that muscle fiber size increases systematically from lateral to medial. Therefore, the spatially ordered recruitment of fast muscle fibers, progressing from lateral to medial, correlates with an increase in fiber size. These findings provide significant insights into the organization and function of fast muscles in larval zebrafish, illustrating how spatial recruitment and fiber size interact to optimize movement performance.

在脊椎动物中,骨骼肌由快纤维和慢纤维组成。鱼类的慢肌细胞和快肌细胞在空间上是分离的;慢肌细胞仅位于表面区域,占总肌细胞质量的一小部分。慢肌肉支持低速、低力量的运动,而快肌肉负责高速、高力量的运动。然而,运动的速度和力量并不是二元状态,而是一个连续体。这就提出了一个问题,即快速肌中是否存在任何招募模式,快速肌构成了大部分肌肉细胞群。在本研究中,我们研究了斑马鱼幼体在不同速度和力量的运动过程中躯干快肌的激活模式。我们采用钙显像和电生理两种互补的方法。两种方法得到的结果都支持了快速肌细胞中存在空间有序募集模式的结论。在较弱/较慢的运动中,只有快速肌细胞的外侧部分被招募。随着运动速度或强度的增加,更多的快速肌肉细胞以空间有序的方式被招募,逐渐从外侧到内侧。我们还进行了解剖学研究,以检查肌纤维的大小。实验结果表明,肌肉纤维大小从外侧到内侧有系统地增加。因此,快速肌纤维的空间有序募集,从外侧到内侧,与纤维大小的增加有关。这些发现为了解斑马鱼幼虫快速肌肉的组织和功能提供了重要的见解,说明了空间招募和纤维大小如何相互作用以优化运动性能。
{"title":"Spatially ordered recruitment of fast muscles in accordance with movement strengths in larval zebrafish.","authors":"Sayaka Shimizu, Taisei Katayama, Nozomi Nishiumi, Masashi Tanimoto, Yukiko Kimura, Shin-Ichi Higashijima","doi":"10.1186/s40851-024-00247-8","DOIUrl":"https://doi.org/10.1186/s40851-024-00247-8","url":null,"abstract":"<p><p>In vertebrates, skeletal muscle comprises fast and slow fibers. Slow and fast muscle cells in fish are spatially segregated; slow muscle cells are located only in a superficial region, and comprise a small fraction of the total muscle cell mass. Slow muscles support low-speed, low-force movements, while fast muscles are responsible for high-speed, high-force movements. However, speed and strength of movement are not binary states, but rather fall on a continuum. This raises the question of whether any recruitment patterns exist within fast muscles, which constitute the majority of muscle cell mass. In the present study, we investigated activation patterns of trunk fast muscles during movements of varying speeds and strengths using larval zebrafish. We employed two complementary methods: calcium imaging and electrophysiology. The results obtained from both methods supported the conclusion that there are spatially-ordered recruitment patterns in fast muscle cells. During weaker/slower movements, only the lateral portion of fast muscle cells is recruited. As the speed or strength of the movements increases, more fast muscle cells are recruited in a spatially-ordered manner, progressively from lateral to medial. We also conducted anatomical studies to examine muscle fiber size. The results of those experiments indicated that muscle fiber size increases systematically from lateral to medial. Therefore, the spatially ordered recruitment of fast muscle fibers, progressing from lateral to medial, correlates with an increase in fiber size. These findings provide significant insights into the organization and function of fast muscles in larval zebrafish, illustrating how spatial recruitment and fiber size interact to optimize movement performance.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"11 1","pages":"1"},"PeriodicalIF":1.7,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11697752/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ecology of endolithic bryozoans: colony development, growth rates and interactions of species in the genus Immergentia. 内石孔虫的生态学:Immergentia 属物种的群落发展、生长率和相互作用。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-12-31 DOI: 10.1186/s40851-024-00246-9
Mildred J Johnson, Sarah Lemer, Masato Hirose, Sebastian H Decker, Thomas Schwaha

Boring bryozoans dissolve calcium carbonate substrates, leaving unique borehole traces. Depending on the shell type, borehole apertures and colony morphology can be diagnostic for distinguishing taxa, but to discriminate among species their combination with zooidal morphology is essential. All boring (endolithic) bryozoans are ctenostomes that, along with other boring taxa, are common in benthic communities. The growth rates of such bryozoans, including Immergentiidae, are largely unknown. For the first time laboratory experiments were conducted to determine growth rates and early colony development of the intertidal species Immergentia stephanieae and the subtidal species I. cf. suecica from Roscoff, France. In growth experiment 1, ancestrular growth rates varied, with the highest rates in I. stephanieae at 96.5 µm day-1 and the lowest at 1.1 µm day-1, during the period of August to October, in which the number of reproductive zooids was comparably higher than in other months of the year. Immergentia cf. suecica had a higher proportion of reproductive zooids from December to March compared to other months. In growth experiment 2, the bryozoans were fed a culture mixture of Chaetoceros calcitrans and Tisochrysis lutea which was compared with a control. The growth rate of small colonies of comparable size was greater in the food-enriched samples compared to the control (non-enriched). In larger colonies, the trend differed with greater growth (cystid appendage expansion) rate reported for some samples in the control. In food-enriched samples ancestrulae of I. stephanieae grew at 23 µm day-1 and I. cf. suecica 9.3 µm day-1 while no growth was observed in the control of I. cf. suecica, but 0.4 µm day-1 was reported for I. stephanieae. Growth patterns in the early developmental stages showed that the budding patterns from the ancestrulae were the same for both species, with different enantiomorphic tendencies. Inter- and intraspecific interactions are also discussed. The distribution of immergentiids is presented, as are records from new locations and the greatest subtidal depth of collection reported to date.

钻孔苔藓虫溶解碳酸钙基质,留下独特的钻孔痕迹。根据壳的类型,钻孔孔径和群落形态可以作为区分分类群的诊断依据,但将钻孔孔径和群落形态结合起来进行种间的区分是至关重要的。所有无聊(内生)苔藓虫都是栉齿动物,与其他无聊的分类群一起,在底栖生物群落中很常见。这些苔藓虫的生长速度,包括浸生虫科,在很大程度上是未知的。本文首次对法国罗斯科夫潮间带和潮下带两种潮间带水藻的生长速率和早期群落发育情况进行了实验研究。在生长实验1中,祖先生长速率各不相同,在8 - 10月期间,stephanieae的最高生长速率为96.5µm day-1,最低生长速率为1.1µm day-1,繁殖动物的数量在这一时期比一年中其他月份要多。12月至3月,水蛭的生殖类动物比例高于其他月份。在生长试验2中,饲喂钙化毛藻和黄斑毛藻混合培养物,并与对照进行比较。与对照(非富集)相比,食物富集样品中类似大小的小菌落的生长率更高。在较大的菌落中,趋势有所不同,在一些对照样品中报告了较大的生长(囊附扩张)率。在富含食物的样品中,金鸡家蝇祖先的生长速度为23µm day-1,金鸡家蝇祖先的生长速度为9.3µm day-1,而在对照组中,金鸡家蝇没有生长,但金鸡家蝇的生长速度为0.4µm day-1。发育早期的生长模式表明,两种植物来自祖先的出芽模式相同,但具有不同的对胚性倾向。还讨论了种间和种内相互作用。介绍了浸生类的分布,以及新地点的记录和迄今为止报道的最大的潮下采集深度。
{"title":"Ecology of endolithic bryozoans: colony development, growth rates and interactions of species in the genus Immergentia.","authors":"Mildred J Johnson, Sarah Lemer, Masato Hirose, Sebastian H Decker, Thomas Schwaha","doi":"10.1186/s40851-024-00246-9","DOIUrl":"10.1186/s40851-024-00246-9","url":null,"abstract":"<p><p>Boring bryozoans dissolve calcium carbonate substrates, leaving unique borehole traces. Depending on the shell type, borehole apertures and colony morphology can be diagnostic for distinguishing taxa, but to discriminate among species their combination with zooidal morphology is essential. All boring (endolithic) bryozoans are ctenostomes that, along with other boring taxa, are common in benthic communities. The growth rates of such bryozoans, including Immergentiidae, are largely unknown. For the first time laboratory experiments were conducted to determine growth rates and early colony development of the intertidal species Immergentia stephanieae and the subtidal species I. cf. suecica from Roscoff, France. In growth experiment 1, ancestrular growth rates varied, with the highest rates in I. stephanieae at 96.5 µm day<sup>-1</sup> and the lowest at 1.1 µm day<sup>-1</sup>, during the period of August to October, in which the number of reproductive zooids was comparably higher than in other months of the year. Immergentia cf. suecica had a higher proportion of reproductive zooids from December to March compared to other months. In growth experiment 2, the bryozoans were fed a culture mixture of Chaetoceros calcitrans and Tisochrysis lutea which was compared with a control. The growth rate of small colonies of comparable size was greater in the food-enriched samples compared to the control (non-enriched). In larger colonies, the trend differed with greater growth (cystid appendage expansion) rate reported for some samples in the control. In food-enriched samples ancestrulae of I. stephanieae grew at 23 µm day<sup>-1</sup> and I. cf. suecica 9.3 µm day<sup>-1</sup> while no growth was observed in the control of I. cf. suecica, but 0.4 µm day<sup>-1</sup> was reported for I. stephanieae. Growth patterns in the early developmental stages showed that the budding patterns from the ancestrulae were the same for both species, with different enantiomorphic tendencies. Inter- and intraspecific interactions are also discussed. The distribution of immergentiids is presented, as are records from new locations and the greatest subtidal depth of collection reported to date.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"23"},"PeriodicalIF":1.7,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11686985/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142907901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolution of wing scales in Diptera documented by fossils. 化石记录了双翅目昆虫翅鳞的进化。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-12-30 DOI: 10.1186/s40851-024-00244-x
Ewa Krzemińska, Wiesław Krzemiński, Iwona Kania-Kłosok, Jadwiga Stanek-Tarkowska, Kornelia Skibińska, Daubian Santos

Among the insects with wings clad in scales, the butterflies are the best known and those showing greatest variety of scale types. In the Diptera, some families or particular genera of two large groups are known to bear scales on wings, i.e., mosquitoes (Culicomorpha) and moth flies (Psychodomorpha). From among another large dipteran group, the crane-flies (Tipulomorpha), scales are present on wings only in one small genus, Maietta Alexander, now endemic to the southwestern coast of South America. Here, we describe an Eocene ancestor of Maietta, embedded in Baltic amber, Maietta hoffeinsetta, n. sp. This species and its recent congeners document evolution of scale cover from sparse and scarce, restricted only to anterior portion of wing, to complete and dense. A similar parallel evolutionary route was previously described in the Culicidae. The fossil representative of Maietta provides also a further example of biogeographical relationships of Baltic fauna with recent congeners distributed today far from Europe. The present finding prompts a discussion on a possible role of scales in adaptation to post Eocene cooling down of climate.

在翅膀上覆有鳞片的昆虫中,蝴蝶是最著名的,也是鳞片种类最多的昆虫。在双翅目中,已知有两大类群的某些科或特定属的翅膀上有鳞片,即蚊(Culicomorpha)和蛾蝇(Psychodomorpha)。在另一个大型双翅目类群中,只有一个小属(Maietta Alexander)的翅膀上有鳞片,该属现在是南美洲西南海岸的特有种。本文描述了Maietta的始新世祖先,埋藏在波罗的海琥珀中,Maietta hoffeinsetta, n. sp.。该物种及其最近的同系物记录了鳞片覆盖从稀疏和稀少,仅局限于翅膀前部,到完整和密集的进化过程。之前在库蚊科中也有类似的平行进化路线。迈耶塔的化石代表还提供了波罗的海动物群与今天远离欧洲的近亲之间生物地理关系的进一步例子。目前的发现促使人们讨论尺度在适应始新世后气候变冷中的可能作用。
{"title":"Evolution of wing scales in Diptera documented by fossils.","authors":"Ewa Krzemińska, Wiesław Krzemiński, Iwona Kania-Kłosok, Jadwiga Stanek-Tarkowska, Kornelia Skibińska, Daubian Santos","doi":"10.1186/s40851-024-00244-x","DOIUrl":"10.1186/s40851-024-00244-x","url":null,"abstract":"<p><p>Among the insects with wings clad in scales, the butterflies are the best known and those showing greatest variety of scale types. In the Diptera, some families or particular genera of two large groups are known to bear scales on wings, i.e., mosquitoes (Culicomorpha) and moth flies (Psychodomorpha). From among another large dipteran group, the crane-flies (Tipulomorpha), scales are present on wings only in one small genus, Maietta Alexander, now endemic to the southwestern coast of South America. Here, we describe an Eocene ancestor of Maietta, embedded in Baltic amber, Maietta hoffeinsetta, n. sp. This species and its recent congeners document evolution of scale cover from sparse and scarce, restricted only to anterior portion of wing, to complete and dense. A similar parallel evolutionary route was previously described in the Culicidae. The fossil representative of Maietta provides also a further example of biogeographical relationships of Baltic fauna with recent congeners distributed today far from Europe. The present finding prompts a discussion on a possible role of scales in adaptation to post Eocene cooling down of climate.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"22"},"PeriodicalIF":1.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11687164/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142907916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The lost generation of Pemphigus populiglobuli (Hemiptera, Aphididae): exploring the taxonomy of the Svalbard aphids of genus Pemphigus. 天疱疮的失代(半翅目,蚜科):天疱疮属斯瓦尔巴蚜虫的分类探讨。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-12-18 DOI: 10.1186/s40851-024-00245-w
Karina Wieczorek, Dominik Chłond, Emmanuelle Jousselin, Stephen J Coulson

Species identification within the aphid genus Pemphigus Hartig, 1839 poses challenges due to morphological similarities and host-plant associations. Aphids of this genus generally exhibit complex life cycles involving primary hosts (poplars) and secondary (mostly unrelated herbaceous) host-plants, with some species relying solely on root-feeding generation. An example is a representative of the genus Pemphigus, trophically associated with grass roots, found in the High Arctic Svalbard archipelago. Historical records tentatively identify it as Pemphigus groenlandicus (Rübsaamen, 1898), although its formal classification remains elusive, due to limited material of freshly collected samples. Recent collections from 2007 to 2024 across various Svalbard sites, revealed its presence under stones in sheltered microhabitats, providing valuable specimens for comparative studies. Our molecular analyses indicate that the Svalbard specimens are not a separate species commonly identified as P. groenlandicus, nor an anholocyclic generation of Pemphigus bursarius (Linnaeus, 1758) or P. borealis Tullgren, 1909, but represent a secondary generation of Pemphigus populiglobuli Fitch, 1859, the Nearctic poplar bullet gall aphid. This suggests that they may have lost their primary host associations and adapted to living on grass roots year-round. Our specimens did not host any known facultative symbionts; however, we detected a strain of Pseudomonas Migula, 1894, closely related to a cold-tolerant bacterium abundant in polar regions. The present study also investigates the taxonomic relationships and morphometric characteristics of grass-feeding Pemphigus populations across the Arctic and an isolated locations on the European continent. Specimens from Svalbard were compared with samples from Greenland and Iceland, but identified no substantial morphometric differences among these geographically separated populations. Similarly, analyses of samples of Pemphigus groenlandicus crassicornis Hille Ris Lambers, 1952 from Sweden and Spain reveals a high morphometric similarity to the Arctic population, indicating a strong link between these traits and geographical variability. Despite the limitations in fresh material availability across locations, minor morphometric variations and shared ecological niches (all populations studied inhabiting grass roots, a unique trait within the Pemphigus genus) suggest treating both P. groenlandicus and its subspecies crassicornis as a junior synonym to P. populiglobuli. The study also demonstrates that the secondary generation of P. populiglobuli is a terrestrial microarthropod that overwinters in a postembryonic life-stage in situ in soil and vegetation under harsh Arctic conditions, and its cryptic life complicates its distribution mapping.

在蚜虫属天疱疮Hartig, 1839种鉴定提出了挑战,由于形态相似性和寄主植物的关联。该属蚜虫通常表现出复杂的生命周期,包括初级寄主(杨树)和次级寄主(大多数不相关的草本植物),有些种类仅依靠根食产生。一个例子是天疱疮属的代表,与营养有关的草根,发现在北极高斯瓦尔巴群岛。历史记录暂时将其确定为天疱疮(r bsaamen, 1898),但由于新采集的样本材料有限,其正式分类仍难以确定。最近从2007年到2024年在斯瓦尔巴群岛的各个地点收集的藏品显示,它存在于有遮蔽的微栖息地的石头下,为比较研究提供了有价值的标本。我们的分子分析表明,斯瓦尔巴德的标本不是一个单独的种,通常被认为是P. groenlandicus,也不是天疱疮(Linnaeus, 1758)或P. borealis Tullgren, 1909的全环代,而是天疱疮(Pemphigus populiglobuli Fitch, 1859)的第二代,即新北极杨树bullet gall蚜虫。这表明它们可能已经失去了它们的主要宿主联系,并适应了全年生活在草根上。我们的标本中没有任何已知的兼性共生体;然而,我们检测到一株假单胞菌,1894,与极地地区丰富的耐寒细菌密切相关。本研究还调查了北极和欧洲大陆孤立地区草食性天疱疮种群的分类关系和形态特征。来自斯瓦尔巴群岛的标本与来自格陵兰岛和冰岛的标本进行了比较,但在这些地理上分离的种群中没有发现实质性的形态差异。同样,对1952年来自瑞典和西班牙的带状天疱疮样本的分析显示,与北极种群的形态相似性很高,表明这些特征与地理变异之间存在很强的联系。尽管不同地点的新鲜材料有限,但微小的形态差异和共享的生态位(所有种群都研究了居住在草根中的天疱疮属的一个独特特征)表明,P. groenlandicus及其亚种crassicornis都是P. populiglobuli的初级同义词。该研究还表明,populiglobuli第二代是一种陆生小节肢动物,在恶劣的北极条件下,在土壤和植被中原地越冬,处于胚胎后生命阶段,其隐蔽性使其分布地图更加复杂。
{"title":"The lost generation of Pemphigus populiglobuli (Hemiptera, Aphididae): exploring the taxonomy of the Svalbard aphids of genus Pemphigus.","authors":"Karina Wieczorek, Dominik Chłond, Emmanuelle Jousselin, Stephen J Coulson","doi":"10.1186/s40851-024-00245-w","DOIUrl":"10.1186/s40851-024-00245-w","url":null,"abstract":"<p><p>Species identification within the aphid genus Pemphigus Hartig, 1839 poses challenges due to morphological similarities and host-plant associations. Aphids of this genus generally exhibit complex life cycles involving primary hosts (poplars) and secondary (mostly unrelated herbaceous) host-plants, with some species relying solely on root-feeding generation. An example is a representative of the genus Pemphigus, trophically associated with grass roots, found in the High Arctic Svalbard archipelago. Historical records tentatively identify it as Pemphigus groenlandicus (Rübsaamen, 1898), although its formal classification remains elusive, due to limited material of freshly collected samples. Recent collections from 2007 to 2024 across various Svalbard sites, revealed its presence under stones in sheltered microhabitats, providing valuable specimens for comparative studies. Our molecular analyses indicate that the Svalbard specimens are not a separate species commonly identified as P. groenlandicus, nor an anholocyclic generation of Pemphigus bursarius (Linnaeus, 1758) or P. borealis Tullgren, 1909, but represent a secondary generation of Pemphigus populiglobuli Fitch, 1859, the Nearctic poplar bullet gall aphid. This suggests that they may have lost their primary host associations and adapted to living on grass roots year-round. Our specimens did not host any known facultative symbionts; however, we detected a strain of Pseudomonas Migula, 1894, closely related to a cold-tolerant bacterium abundant in polar regions. The present study also investigates the taxonomic relationships and morphometric characteristics of grass-feeding Pemphigus populations across the Arctic and an isolated locations on the European continent. Specimens from Svalbard were compared with samples from Greenland and Iceland, but identified no substantial morphometric differences among these geographically separated populations. Similarly, analyses of samples of Pemphigus groenlandicus crassicornis Hille Ris Lambers, 1952 from Sweden and Spain reveals a high morphometric similarity to the Arctic population, indicating a strong link between these traits and geographical variability. Despite the limitations in fresh material availability across locations, minor morphometric variations and shared ecological niches (all populations studied inhabiting grass roots, a unique trait within the Pemphigus genus) suggest treating both P. groenlandicus and its subspecies crassicornis as a junior synonym to P. populiglobuli. The study also demonstrates that the secondary generation of P. populiglobuli is a terrestrial microarthropod that overwinters in a postembryonic life-stage in situ in soil and vegetation under harsh Arctic conditions, and its cryptic life complicates its distribution mapping.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"21"},"PeriodicalIF":1.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11658103/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142856400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A transphyletic study of metazoan β-catenin protein complexes. 后生动物β-连环蛋白复合物的转体研究。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-12-02 DOI: 10.1186/s40851-024-00243-y
Ivan Mbogo, Chihiro Kawano, Ryotaro Nakamura, Yuko Tsuchiya, Alejandro Villar-Briones, Yoshitoshi Hirao, Yuuri Yasuoka, Eisuke Hayakawa, Kentaro Tomii, Hiroshi Watanabe

Beta-catenin is essential for diverse biological processes, such as body axis determination and cell differentiation, during metazoan embryonic development. Beta-catenin is thought to exert such functions through complexes formed with various proteins. Although β-catenin complex proteins have been identified in several bilaterians, little is known about the structural and functional properties of β-catenin complexes in early metazoan evolution. In the present study, we performed a comparative analysis of β-catenin sequences in nonbilaterian lineages that diverged early in metazoan evolution. We also carried out transphyletic function experiments with β-catenin from nonbilaterian metazoans using developing Xenopus embryos, including secondary axis induction in embryos and proteomic analysis of β-catenin protein complexes. Comparative functional analysis of nonbilaterian β-catenins demonstrated sequence characteristics important for β-catenin functions, and the deep origin and evolutionary conservation of the cadherin-catenin complex. Proteins that co-immunoprecipitated with β-catenin included several proteins conserved among metazoans. These data provide new insights into the conserved repertoire of β-catenin complexes.

在后生动物胚胎发育过程中,β -连环蛋白对多种生物过程至关重要,如体轴决定和细胞分化。-连环蛋白被认为是通过与各种蛋白质形成复合物来发挥这种功能的。虽然β-catenin复合体蛋白已经在一些双边动物中被发现,但在早期后生动物进化中,β-catenin复合体的结构和功能特性尚不清楚。在本研究中,我们对在后生动物进化早期分化的非双侧谱系中β-catenin序列进行了比较分析。我们还利用发育中的爪蟾胚胎进行了非双侧后生动物β-catenin的转体功能实验,包括胚胎的次级轴诱导和β-catenin蛋白复合物的蛋白质组学分析。非双边体β-catenin的比较功能分析证明了序列特征对β-catenin功能的重要作用,以及钙粘蛋白-catenin复合物的深层起源和进化保护。与β-连环蛋白共免疫沉淀的蛋白包括一些在后生动物中保守的蛋白。这些数据为β-连环蛋白复合物的保守曲目提供了新的见解。
{"title":"A transphyletic study of metazoan β-catenin protein complexes.","authors":"Ivan Mbogo, Chihiro Kawano, Ryotaro Nakamura, Yuko Tsuchiya, Alejandro Villar-Briones, Yoshitoshi Hirao, Yuuri Yasuoka, Eisuke Hayakawa, Kentaro Tomii, Hiroshi Watanabe","doi":"10.1186/s40851-024-00243-y","DOIUrl":"10.1186/s40851-024-00243-y","url":null,"abstract":"<p><p>Beta-catenin is essential for diverse biological processes, such as body axis determination and cell differentiation, during metazoan embryonic development. Beta-catenin is thought to exert such functions through complexes formed with various proteins. Although β-catenin complex proteins have been identified in several bilaterians, little is known about the structural and functional properties of β-catenin complexes in early metazoan evolution. In the present study, we performed a comparative analysis of β-catenin sequences in nonbilaterian lineages that diverged early in metazoan evolution. We also carried out transphyletic function experiments with β-catenin from nonbilaterian metazoans using developing Xenopus embryos, including secondary axis induction in embryos and proteomic analysis of β-catenin protein complexes. Comparative functional analysis of nonbilaterian β-catenins demonstrated sequence characteristics important for β-catenin functions, and the deep origin and evolutionary conservation of the cadherin-catenin complex. Proteins that co-immunoprecipitated with β-catenin included several proteins conserved among metazoans. These data provide new insights into the conserved repertoire of β-catenin complexes.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"20"},"PeriodicalIF":1.7,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11613877/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142774879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Scleral appearance is not a correlate of domestication in mammals. 更正:巩膜外观与哺乳动物的驯化无关。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-10-28 DOI: 10.1186/s40851-024-00242-z
Kai R Caspar, Lisa Hüttner, Sabine Begall
{"title":"Correction: Scleral appearance is not a correlate of domestication in mammals.","authors":"Kai R Caspar, Lisa Hüttner, Sabine Begall","doi":"10.1186/s40851-024-00242-z","DOIUrl":"10.1186/s40851-024-00242-z","url":null,"abstract":"","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"19"},"PeriodicalIF":1.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11520866/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142523656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unique bone histology of modern giant salamanders: a study on humeri and femora of Andrias spp. 现代大鲵独特的骨骼组织学:对大鲵肱骨和股骨的研究
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-10-18 DOI: 10.1186/s40851-024-00240-1
Nicole Klein, Dorota Konietzko-Meier, Sudipta Kalita, Masahiro Noda, Sena Ishikawa, Yuki Taguchi, Wataru Anzai, Shoji Hayashi

The osteohistology of Andrias spp. is a pivotal analogue for large fossil non-amniotes (e.g., Temnospondyli), and the endangered status of this taxon underlines the importance of gathering information on its growth. We here present the first osteohistological study by petrographic thin sections of an ontogenetic series of humeri and femora of eight individuals of varying sizes (28.5-104 cm) and ages (2.5-32 years) of Andrias japonicus from the Hiroshima City Asa Zoological Park, Japan. In addition, two individuals of A. cf. davidianus of unknown age but of different size (62 cm and 94 cm) were studied. All samples of Andrias spp. show a primary avascular periosteal cortex made of parallel-fibred tissue around the ossification center in the petrographic thin sections. Mainly in small individuals, the fibers forming this tissue are very coarse and loosely organized. With increasing size and age, the coarse tissue is irregularly intermixed and later replaced with finer and better organized fibers. This histologic change is accompanied by a change from diffuse annuli in the inner cortex to distinct lines of arrested growth (LAGs) in the outer cortex. We interpret these changes in tissue and the appearance of distinct growth marks as indicating the onset of active reproduction. The lack of primary vascularization around the ossification center in our Andrias spp. sample is striking and contradicts other observations. Vascularity may be prone to plasticity and further studies are necessary. We hypothesize that the large osteocyte lacunae and the dense networks of canaliculi observed in our sample may have nourished the tissue instead of primary vascular canals. We measured the size of osteocyte lacunae of Andrias spp. in comparison to other Lissamphibia, and found them to be significantly larger throughout ontogeny. The periosteal cortex contains a high amount of thick Sharpey's fibers all around the midshaft cross sections. The two samples of Andrias cf. davidianus show tissue and growth mark distribution similar to that observed in A. japonicus. However, the large individual of A. cf. davidianus differed in its extremely osteosclerotic condition and the retention of a small layer of calcified cartilage in the endosteal region of the femur. It remains unclear whether these differences are related to plasticity, taxonomy, sex, exogenous factors, or attributable to a regenerated but fully regrown leg. Although the present study is based on zoo-kept and not wild, animals, it yields important insights into osteohistological plasticity and growth patterns in giant salamanders.

Andrias spp.的骨组织学是大型非羊膜动物化石(如Temnospondyli)的一个重要类群,该类群的濒危地位凸显了收集其生长信息的重要性。在此,我们首次对日本广岛市阿萨动物公园出土的 8 个不同大小(28.5-104 厘米)和年龄(2.5-32 岁)的日本鲵(Andrias japonicus)个体的肱骨和股骨进行了薄片岩石学研究。此外,还研究了两只年龄未知但体型不同(62 厘米和 94 厘米)的 A. cf. davidianus。在岩相薄片中,所有 Andrias 样品的骨化中心周围都有由平行纤维组织构成的原生无血管骨膜皮层。主要在小个体中,形成这种组织的纤维非常粗糙,组织松散。随着体型的增大和年龄的增长,粗糙的组织会不规则地混杂在一起,随后会被更细和组织更好的纤维所取代。伴随这一组织学变化的是内皮层中弥漫的环状纤维向外皮层中明显的停止生长线(LAG)的转变。我们将这些组织变化和明显生长标记的出现解释为活跃繁殖的开始。在我们的 Andrias 样品中,骨化中心周围缺乏原生血管,这一点非常惊人,而且与其他观察结果相矛盾。血管可能具有可塑性,有必要进行进一步研究。我们推测,在我们的样本中观察到的大的骨细胞空隙和密集的管网可能是滋养组织的,而不是原生血管管。我们测量了 Andrias 属的骨细胞腔的大小,并与其他 Lissamphibia 进行了比较,发现它们在整个发育过程中都明显更大。骨膜皮层在中轴横截面周围含有大量粗沙比纤维。Andrias cf. davidianus的两个样本显示出的组织和生长标记分布情况与日本A.然而,cf. davidianus大个体的不同之处在于其骨质极度硬化,股骨内骨膜区域保留了一小层钙化软骨。目前还不清楚这些差异是与可塑性、分类学、性别、外源因素有关,还是可归因于再生但完全再生的腿。虽然本研究基于动物园饲养的动物而非野生动物,但它对大鲵的骨组织可塑性和生长模式提供了重要的见解。
{"title":"Unique bone histology of modern giant salamanders: a study on humeri and femora of Andrias spp.","authors":"Nicole Klein, Dorota Konietzko-Meier, Sudipta Kalita, Masahiro Noda, Sena Ishikawa, Yuki Taguchi, Wataru Anzai, Shoji Hayashi","doi":"10.1186/s40851-024-00240-1","DOIUrl":"https://doi.org/10.1186/s40851-024-00240-1","url":null,"abstract":"<p><p>The osteohistology of Andrias spp. is a pivotal analogue for large fossil non-amniotes (e.g., Temnospondyli), and the endangered status of this taxon underlines the importance of gathering information on its growth. We here present the first osteohistological study by petrographic thin sections of an ontogenetic series of humeri and femora of eight individuals of varying sizes (28.5-104 cm) and ages (2.5-32 years) of Andrias japonicus from the Hiroshima City Asa Zoological Park, Japan. In addition, two individuals of A. cf. davidianus of unknown age but of different size (62 cm and 94 cm) were studied. All samples of Andrias spp. show a primary avascular periosteal cortex made of parallel-fibred tissue around the ossification center in the petrographic thin sections. Mainly in small individuals, the fibers forming this tissue are very coarse and loosely organized. With increasing size and age, the coarse tissue is irregularly intermixed and later replaced with finer and better organized fibers. This histologic change is accompanied by a change from diffuse annuli in the inner cortex to distinct lines of arrested growth (LAGs) in the outer cortex. We interpret these changes in tissue and the appearance of distinct growth marks as indicating the onset of active reproduction. The lack of primary vascularization around the ossification center in our Andrias spp. sample is striking and contradicts other observations. Vascularity may be prone to plasticity and further studies are necessary. We hypothesize that the large osteocyte lacunae and the dense networks of canaliculi observed in our sample may have nourished the tissue instead of primary vascular canals. We measured the size of osteocyte lacunae of Andrias spp. in comparison to other Lissamphibia, and found them to be significantly larger throughout ontogeny. The periosteal cortex contains a high amount of thick Sharpey's fibers all around the midshaft cross sections. The two samples of Andrias cf. davidianus show tissue and growth mark distribution similar to that observed in A. japonicus. However, the large individual of A. cf. davidianus differed in its extremely osteosclerotic condition and the retention of a small layer of calcified cartilage in the endosteal region of the femur. It remains unclear whether these differences are related to plasticity, taxonomy, sex, exogenous factors, or attributable to a regenerated but fully regrown leg. Although the present study is based on zoo-kept and not wild, animals, it yields important insights into osteohistological plasticity and growth patterns in giant salamanders.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"18"},"PeriodicalIF":1.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11488364/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The remarkable larval morphology of Rhaebo nasicus (Werner, 1903) (Amphibia: Anura: Bufonidae) with the erection of a new bufonid genus and insights into the evolution of suctorial tadpoles. Rhaebo nasicus (Werner, 1903) (Amphibia: Anura: Bufonidae) 的非凡幼虫形态,建立了一个新的 Bufonid 属,并揭示了蛙类蝌蚪的进化过程。
IF 1.7 3区 生物学 Q2 ZOOLOGY Pub Date : 2024-09-30 DOI: 10.1186/s40851-024-00241-0
Pedro Henrique Dos Santos Dias, Jackson R Phillips, Martín O Pereyra, D Bruce Means, Alexander Haas, Philippe J R Kok

Tadpoles serve as crucial evidence for testing systematic and taxonomic hypotheses. Suctorial tadpoles collected in Guyana were initially assigned to Rhaebo nasicus through molecular phylogeny. Subsequent analysis of larval and adult morphological traits revealed synapomorphies within the clade encompassing R. nasicus and R. ceratophrys, prompting the recognition of a new genus described herein as Adhaerobufo. The new genus is distinguished from other bufonids by specific phenotypic traits including an enlarged, suctorial oral disc with distinct papillae arrangements, and the presence of certain muscles and narial vacuities at the larval stage. However, only a few adult external characteristics (e.g., enlarged eyelids, infraocular cream spot), seem to be reliably discriminative from related genera. This study underscores the significance of larval morphology in anuran systematics and offers new insights into the evolution of suctorial and gastromyzophorous larvae within bufonids.

蝌蚪是检验系统学和分类学假设的重要证据。通过分子系统发育,在圭亚那采集的鞘翅目蝌蚪最初被归入Rhaebo nasicus。随后对幼体和成体形态特征的分析表明,在包括 R. nasicus 和 R. ceratophrys 的支系中存在同形异构现象,这促使人们认识到一个新的属,即本文描述的 Adhaerobufo 属。这一新属与其他布福类的区别在于其特殊的表型特征,包括扩大的扇形口盘和独特的乳突排列,以及幼虫阶段存在某些肌肉和腹膜空泡。然而,只有少数成虫的外部特征(如增大的眼睑、眼下奶油斑)似乎能可靠地与相关属区分开来。这项研究强调了幼虫形态学在无尾目动物系统学中的重要意义,并为了解布氏无尾目动物中套肠幼虫和胃口幼虫的进化提供了新的视角。
{"title":"The remarkable larval morphology of Rhaebo nasicus (Werner, 1903) (Amphibia: Anura: Bufonidae) with the erection of a new bufonid genus and insights into the evolution of suctorial tadpoles.","authors":"Pedro Henrique Dos Santos Dias, Jackson R Phillips, Martín O Pereyra, D Bruce Means, Alexander Haas, Philippe J R Kok","doi":"10.1186/s40851-024-00241-0","DOIUrl":"10.1186/s40851-024-00241-0","url":null,"abstract":"<p><p>Tadpoles serve as crucial evidence for testing systematic and taxonomic hypotheses. Suctorial tadpoles collected in Guyana were initially assigned to Rhaebo nasicus through molecular phylogeny. Subsequent analysis of larval and adult morphological traits revealed synapomorphies within the clade encompassing R. nasicus and R. ceratophrys, prompting the recognition of a new genus described herein as Adhaerobufo. The new genus is distinguished from other bufonids by specific phenotypic traits including an enlarged, suctorial oral disc with distinct papillae arrangements, and the presence of certain muscles and narial vacuities at the larval stage. However, only a few adult external characteristics (e.g., enlarged eyelids, infraocular cream spot), seem to be reliably discriminative from related genera. This study underscores the significance of larval morphology in anuran systematics and offers new insights into the evolution of suctorial and gastromyzophorous larvae within bufonids.</p>","PeriodicalId":54280,"journal":{"name":"Zoological Letters","volume":"10 1","pages":"17"},"PeriodicalIF":1.7,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11440901/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142332350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Zoological Letters
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1