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A new species of Stauroteuthis (Octopoda: Cirrata) and further novel cirrate octopods from Australian waters 澳大利亚水域的一个新物种Stauroteuthis(章鱼目:Cirrata)和其他新的卷毛章鱼
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-07-20 DOI: 10.1080/13235818.2023.2232534
Tristan Joseph Verhoeff
ABSTRACT New deep-sea finned octopods (Octopoda: Cirrata) in the genera Stauroteuthis and Cirrothauma (Cirroteuthidae) are reported from Australian waters. One new species of Stauroteuthis, S. kengrahami n. sp., is reported from southeastern Australia, a second, S. ?gilchristi from off Macquarie Island, and one specimen collected from off Heard Island is provisionally referred to Cirrothauma magna. A single female Luteuthis dentatus (Grimpoteuthididae) is also reported from Macquarie Island, and additional specimens of Grimpoteuthis greeni are reported from the Great Australian Bight. These new records and new species increase the diversity of Australian cirrate octopuses from six to 10 species, covering all recognised cirrate genera excepting Cryptoteuthis, and emphasise how much remains to be learned regarding Australia’s deep-sea cephalopods.
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引用次数: 0
An extinct species of Tchangmargarya (Gastropoda: Viviparidae) from quaternary lacustrine deposits of a group of vanished lakes in Yunnan, China 中国云南一组消失湖泊第四纪湖泊沉积物中的一种已灭绝的长缘蛛属(腹足目:活蛛科)
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-07-18 DOI: 10.1080/13235818.2023.2232590
Le-Jia Zhang, Xiao-dong Wang
ABSTRACT An extinct freshwater molluscan fauna has been discovered from Quaternary lacustrine deposits of a recently vanished group of lakes and surrounding lacustrine deposits in the Luliang Basin, Yunnan Province, China. Three species of Tchangmargarya He, 2013 are dominant and distributed sympatrically here. One of them is new to science. Here we describe the three Tchangmargarya species from the Luliang Basin, including the new species, Tchangmargarya cuan n. sp., and compare the species composition of this fauna with the other extant lacustrine mollusc fauna of Yunnan. The vanished lakes group in Luliang is the first case of sympatric distribution within Tchangmargarya. It is considered to have once been a diversity hotspot of Tchangmargarya and represents a vanished Quaternary lacustrine habitat in Yunnan.
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引用次数: 0
First live imagery, morphological insights, and new locations of the near-threatened endemic microsnail Sheitanok amidicus (Caenogastropoda: Hydrobiidae) from southeast Turkey 土耳其东南部濒临灭绝的地方性微小指甲Sheitanok amidicus(软体动物纲:水螅科)的首次现场图像、形态学见解和新位置
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-07-13 DOI: 10.1080/13235818.2023.2233121
İhsan Ekin, R. Şeşen
ABSTRACT This study presents new insights into the near-threatened endemic microsnail Sheitanok amidicus (Schütt & Şeşen, 1991), shedding light on its distribution and morphological characteristics, which have never been documented alive. Surveys conducted in 2023 uncovered two previously unknown localities where the species thrives: stenothermic springs in Tavşantepe village and a private farm in Diyarbakır, Turkey. The snail has whitish-grey body tissue, tentacles with an average length of 0.3 mm, and a foot extending up to 2 mm with grey dots on the upper part. The oval-shaped operculum has an average height and width of 0.4 and 0.3 mm, respectively. The shell width and height is 1.0 mm and 0.7 mm, respectively. The snail has unique features including an orange operculum, heart-shaped blackish mouth parts and two blackish eyes at the base of its tentacles. Previously, the species was known to inhabit seven locations in Southeast Turkey. Its near-threatened status on the IUCN Red List highlights the urgency of conservation efforts. The identification of these new locations provides hope for reducing the risk of extinction for S. amidicus. Additionally, describing the snail's external characteristics would aid in systematic classification of newly found species within this monotypic genus.
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引用次数: 0
Molecular identification of Japeuthria ferrea from the south coast of Korea 韩国南部海岸日本铁的分子鉴定
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2217531
Sung-Jong Cho, Jeonghee Lee, I. Yang, Jinsoon Park
ABSTRACT This study represents the first molecular analysis of Japeuthria ferrea specimens from Korea, focusing on COI and H3 gene regions for species identification and phylogenetic analysis. A total of 13 samples was collected from three different locations along the south coast of Korea, and their sequences were registered in the NCBI GenBank. The COI and H3 gene regions were successfully amplified and bidirectionally sequenced, providing a valuable reference for future DNA barcoding studies. Phylogenetic analysis based on both COI and H3 sequences demonstrated that the Korean and Japanese J. ferrea populations lacked clear regional differentiation. Despite the limitations in differentiating the regional characteristics of J. ferrea, the study confirms the applicability of COI and H3 genes for accurate species identification. The findings emphasise the importance of employing multiple molecular markers for comprehensive DNA analysis to improve species identification accuracy and to minimise misidentification. Further investigation involving expanded sampling and additional DNA regions is required to elucidate the phylogenetic relationships and distribution of J. ferrea.
摘要本研究首次对来自韩国的日本铁藻标本进行了分子分析,重点对COI和H3基因区域进行了物种鉴定和系统发育分析。共从韩国南海岸的三个不同地点采集了13个样本,其序列已在NCBI GenBank中登记。COI和H3基因区域被成功扩增并双向测序,为未来的DNA条形码研究提供了有价值的参考。基于COI和H3序列的系统发育分析表明,韩国和日本的J.ferrea种群缺乏明确的区域分化。尽管在区分铁藻的区域特征方面存在局限性,但该研究证实了COI和H3基因对准确物种鉴定的适用性。这些发现强调了使用多种分子标记进行全面DNA分析的重要性,以提高物种识别的准确性并最大限度地减少错误识别。需要进一步的研究,包括扩大采样和额外的DNA区域,以阐明铁藻的系统发育关系和分布。
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引用次数: 0
Description of the glochidia of Westralunio albertisi Clench, 1957 (Bivalvia: Unionida: Hyriidae) from the Fly River system, Papua New Guinea 巴布亚纽几内亚飞河系统的舌蝗描述,1957年(比瓦维亚:舌蝗科:舌蝗科)
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2203075
M. Klunzinger
ABSTRACT Larvae (glochidia) of the freshwater mussel, Westralunio albertisi were obtained from the marsupia of a preserved female at the Western Australian Museum. Glochidial shells of W. albertisi are subtriangular and scalene in shape outline with a convoluted surface dotted with pores and have a protruding ventral apex. Glochidial shells (n = 60) measured 260.0 μm long (L) (±1.11 SE), 233.1 μm high (H) (± 1.32 SE), with a size of 246.6 μm (± 0.99 SE), hinge length (Hg) of 183.6 μm (± 0.99 SE), larval tooth length (LTL) of 53.6 μm (± 0.84 SE) and angle of obliquity (Á) of 12.9° (± 0.28 SE). Larval teeth are singular in each valve, lack microstylets, have convex or concave basal protuberances on opposing valves and terminate as blunt outward facing spoon-like to peg-like cusps. In comparison to Westralunio carteri, W. albertisi is smaller (d.f., 178; P < 0.001) for L (t = 33.85), H (t = 12.80), Size (t = 28.98), Hg (t = 21.32), H/L (t = −15.06) and Hg/L (t = −4.21). Westralunio albertisi also has a more acute Á than W. carteri (d.f., 71; t, 10.17; P < 0.001), but displays no difference in LTL (d.f., 6; t, 0.16, P = 0.44).
摘要:淡水贻贝Westralunio albertisi的幼虫(glochidia)是从西澳大利亚博物馆保存的一只雌性有袋动物身上获得的。艾伯蒂西的肾小球壳外形为近三角形和鳞片状,表面有孔,腹面有突出的先端。肾小球壳(n = 60)测得260.0μm长(L)(±1.11 SE),233.1μm高(H)(±1.32 SE),大小为246.6μm(±0.99 SE),铰链长度(Hg)为183.6μm,幼虫牙齿长度(LTL)为53.6μm,倾角(Á)为12.9°(±0.28 SE)。幼齿在每个瓣中都是单一的,缺乏微型,在相对的瓣上有凸起或凹陷的基部突起,末端为钝的向外的匙状到栓状尖端。与Westralunio carteri相比,W.albertisi较小(d.f.,178;P < 0.001)对于L(t = 33.85),H(t = 12.80),尺寸(t = 28.98),汞柱(t = 21.32),H/L(t = −15.06)和Hg/L(t = −4.21)。Westralunio albertisi也比W.carteri(d.f.,71;t,10.17;P < 0.001),但LTL无差异(d.f.,6;t,0.16,P = 0.44)。
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引用次数: 0
Reproductive processes of the edible snails Helix lucorum (Linnaeus, 1758) and Eobania vermiculata (O.F. Müller, 1774) in their natural habitats 食用蜗牛螺旋lucorum (Linnaeus, 1758)和蛭螺(O.F. m<s:1> ller, 1774)在自然生境中的繁殖过程
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2201904
İhsan Ekin
ABSTRACT The purpose of this study is to describe the reproductive processes of the snails Helix lucorum and Eobania vermiculata, which are abundant in Diyarbakır, SE Turkey. Reproductive behaviours and eggs of E. vermiculata and H. lucorum were monitored in the gardens of the Commodity Exchange Building, and Hevsel Gardens. The habitats of the species were observed over a one-year period (2022–2023). Helix lucorum reproduction takes place at the age of three to four years, from late October to December. The weight of the adult snails was 22 ± 4 g. The snails laid an average of 82 ± 12 eggs, with a weight of 0.23 ± 0.03 mg, and diameter of 5 mm; they hatched in 30 ± 4 days. Eobania vermiculata reproduction takes place at the age of two years, and breeding is mainly from early October to early December. The adult snails weighed 12 ± 4 g, and laid an average of 70 ± 14 eggs, with each egg weighing 0.16 ± 0.04 mg and measuring 3 mm in diameter. They hatched in 32 ± 5 days. In summary, the study offers details on the reproductive processes of two commercially significant snails, whose breeding habits may vary based on local climatic conditions.
摘要本研究旨在描述土耳其东南部Diyarbakır地区丰富的螺旋体(Helix lucorum)和蛭形螺(Eobania vermiculata)的繁殖过程。在商品交易大楼和Hevsel花园中监测了蛭形小蠹和绿足小蠹的繁殖行为和产卵情况。对该物种的栖息地进行了为期一年的观察(2022-2023)。绿螺旋体的繁殖发生在三到四岁,从十月下旬到十二月。成虫体重为22±4 g。平均产卵82±12粒,卵重0.23±0.03 mg,卵径5 mm;孵化时间为30±4天。泥鳅2岁繁殖,繁殖时间主要在10月初至12月初。成虫体重12±4 g,平均产蛋70±14枚,每枚卵重0.16±0.04 mg,直径3 mm。它们在32±5天内孵化。总之,这项研究提供了两种具有重要商业价值的蜗牛繁殖过程的细节,它们的繁殖习惯可能因当地气候条件而异。
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引用次数: 0
Assessment of blacklip rock oyster, Saccostrea lineage J, spat growth and survival in recirculating upweller and downweller nursery systems 黑唇岩牡蛎,Saccotrea谱系J,在循环上下育苗系统中的吐口水生长和存活评估
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2217677
S. Nowland, B. Roberts
ABSTRACT The blacklip rock oyster, Saccostrea lineage J, has the potential to support new aquaculture developments throughout its range in the tropical Indo-Pacific region, but lack of research investment in understanding basic biology has been a key failure point in the past. This study assessed Saccostrea lineage J spat growth and survival in downweller and upweller nursery systems, with the aim of establishing baseline biological information and evaluating spat performance to support commercialisation efforts. Downweller and upweller nursery systems were similarly effective at rearing spat, with mean dorsoventral measurement in both systems reaching a 5 mm deployment size at 59 days post hatch. Growth rates reported in this study of 0.19 and 0.20 mm day−1 in the downweller and upweller, respectively, are comparable to other hatchery-produced tropical and subtropical bivalve spat. Based on the results of this study, it is recommended that spat be held in nurseries for approximately two months to reach a 5 mm deployment size. The information obtained in this study is the first documentation of Saccostrea lineage J spat growth and survival, and the methods used provide a basis for commercial production of this species.
摘要黑唇岩牡蛎,Saccostrea谱系J,有潜力支持热带印度-太平洋地区新的水产养殖发展,但缺乏对基础生物学的研究投资一直是过去的一个关键失败点。本研究评估了Saccostrea谱系J唾沫在下向和上向苗圃系统中的生长和存活,目的是建立基线生物信息并评估唾沫的表现,以支持商业化努力。下行式和上行式育婴系统在饲养吐口水方面同样有效,两个系统的平均背腔测量值均达到5 孵化后59天部署尺寸为mm。本研究报告的增长率分别为0.19和0.20 mm day−1,与其他孵化场生产的热带和亚热带双壳类幼体相当。根据这项研究的结果,建议在托儿所进行大约两个月的吐口水,以达到5 mm部署尺寸。本研究中获得的信息是首次记录Saccotrea谱系J的生长和存活,所使用的方法为该物种的商业生产提供了基础。
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引用次数: 0
The double life of Bulimus ovoideus Bruguière, 1789: taxonomic implications for Streptaxidae and Camaenidae (Mollusca, Stylommatophora) 1789年bruguiires Bulimus ovoideus的双重生活:链虫科和Camaenidae的分类意义(软体动物目,柱头虫科)
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2202807
F. Köhler, D. Herbert, B. Rowson, G. Rosenberg
ABSTRACT The name Bulimus ovoideus Bruguière, 1789 is in current use for two different species, one from East Africa and one from the Philippines. The name has also been declared as the type species of both Edentulina Pfeiffer, 1856 (Streptaxidae) and Cochlostyla Férussac, 1821 (Camaenidae). We demonstrate that the use of this name for a Philippine camaenid is based on an early misidentification. To clarify the situation, we invoke Article 70.3 of the Code of Zoological Nomenclature, concerning misidentified type species, to select the taxonomic species actually involved, Bulinus luzonicus Sowerby I, 1833, as the type species of Cochlostyla. Cochlostyla thus becomes a senior objective synonym of Canistrum Mörch, 1852. Under Article 40.2 of the Code, Helicostylinae Ihering, 1909 takes precedence of Cochlostylinae Möllendorff, 1890. We further show that the Philippine camaenids Orthostylus Beck, 1837 and Dryocochlias Möllendorff, 1898 are objective synonyms with the former name having priority. Finally, we designate a neotype for Bulimus ovoideus to stabilise its taxonomy. These actions permit the current nomenclature to be maintained with a minimum of disruption. The currently accepted name of the taxon in question is Edentulina ovoidea (Bruguière, 1789).
Bulimus ovoideus bruguiires, 1789,目前用于两个不同的物种,一个来自东非,一个来自菲律宾。该名称也被宣布为Edentulina Pfeiffer, 1856(链蝇科)和Cochlostyla f russac, 1821(链蝇科)的模式种。我们证明,使用这个名称为菲律宾camaenid是基于早期的错误识别。为了澄清这种情况,我们援引《动物命名法》第70.3条关于误认模式种的规定,选择了实际涉及的分类种Bulinus luzonicus Sowerby I, 1833作为Cochlostyla的模式种。Cochlostyla因此成为Canistrum的高级客观同义词Mörch, 1852。根据法典第40.2条,1909年Helicostylinae Ihering优先于1890年Möllendorff Cochlostylinae。我们进一步表明,菲律宾camaenids Orthostylus Beck, 1837和Dryocochlias Möllendorff, 1898是前者名称优先的客观同义词。最后,我们指定了一个新型,以稳定其分类。这些操作允许以最小的干扰维持当前的命名法。目前所讨论的分类群的名称是Edentulina ovoidea (bruguiires, 1789)。
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引用次数: 0
Towards understanding of the taxonomy within the genus Emmericia Brusina, 1870 (Caenogastropoda: Truncatelloidea) 对Brusina Emmeria属分类学的理解,1870(Caeno腹足目:Truncatelloide)
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2212413
Aleksandra Jaszczyńska, A. Osikowski, A. Falniowski, Sebastian Hofman
ABSTRACT Emmericia Brusina, 1870 is the only genus of the family Emmericiidae Brusina, 1870, and it inhabits springs and rivers from north-east Italy to southern Croatia, Bosnia and Herzegovina, and Montenegro. Their variable shells have resulted in taxonomic chaos with from one to sixty seven species recognised in Emmericia. Recently four species have been distinguished: E. patula (Brumati, 1838), E. expansilabris Bourguignat, 1881, E. narentana Bourguignat, 1881, and E. ventricosa Brusina, 1870. In the present study, Emmericia from 13 localities were collected. Principal component analysis on seven biometric characters measured on shells from three localities inhabited by two nominal species demonstrated the distinctiveness of these three studied populations. In contrast, the differences between the two populations representing E. patula were not smaller than between either of them and E. expansilabris. Similar remarks apply to the shells of the other two species. The sequences of the cytochrome oxidase subunit I did not confirm that E. expansilabris is a distinct species, so it is regarded as a synonym of E. patula, but did confirm the distinctness of E. ventricosa, which inhabits the localities higher above sea level. No sequences of E. narentana were obtained.
摘要Brusina,1870是Brusina科中唯一的一属,栖息在意大利东北部至克罗地亚南部、波斯尼亚和黑塞哥维那和黑山的泉水和河流中。它们多变的外壳导致了分类学上的混乱,在埃默里克亚发现了一到六十七个物种。最近已经区分出四个物种:E.patula(Brumati,1838)、E.expansilabris Bourguignat,1881、E.narentana Bourguignit,1881和E.ventricosa Brusina,1870。在本研究中,收集了来自13个地区的艾美耳球虫。对两个标称物种居住的三个地区的贝壳上测量的七个生物特征的主成分分析表明了这三个研究种群的独特性。相反,代表E.patula的两个种群之间的差异并不小于它们中的任何一个与E.expansilabris之间的差异。类似的评论也适用于其他两个物种的外壳。细胞色素氧化酶亚基I的序列并没有证实膨胀E.expansilabris是一个独特的物种,因此它被认为是E.patula的同义词,但确实证实了栖息在海平面以上地区的心室E.ventricosa的独特性。未获得E.narentana的序列。
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引用次数: 0
A population study of giant clams (Tridacninae) on the Great Barrier Reef over three-decades 大堡礁巨型蛤蜊(Tridacninae)30多年的种群研究
IF 1 4区 生物学 Q3 Agricultural and Biological Sciences Pub Date : 2023-04-03 DOI: 10.1080/13235818.2023.2214156
R. Braley
ABSTRACT Four giant clam species were monitored for population abundance, recruitment, growth and spatial distribution over three decades. Natural, undisturbed populations were mapped at five sites on the Great Barrier Reef from surveys in 1982–1986, 1987–1992, 2007–2009 and 2017. Populations of all species declined at three sites due to low recruitment and death of old clams. At two sites a significant juvenile recruitment cohort of Tridacna gigas and T. derasa followed a mass mortality event which returned the population to the pre-mass mortality abundance. At one site 55.5% of the cohort survived after five years. Population abundance of T. squamosa and Hippopus hippopus increased slightly at the 2017 survey at these two sites. Tridacna gigas and T. derasa live long enough to reproduce successfully in some years, as evidenced by recruitment. Where significant recruitment occurred, high-aggregation reproductive centres may remain functional for many decades. Individual growth rate from the recruitment surveys averaged six cm yr−1 to five years. Longer-term growth rates averaged nearly two cm yr−1 with the highest rate being over four cm yr−1. Climate change will have some deleterious effects on giant clam populations.
摘要对四种巨蚌的种群丰度、繁殖、生长和空间分布进行了30多年的监测。根据1982年至1986年、1987年至1992年、2007年至2009年和2017年的调查,在大堡礁的五个地点绘制了自然、未受干扰的种群地图。由于老蛤蜊的大量繁殖和死亡,三个地点的所有物种的数量都有所下降。在两个地点,在大规模死亡事件发生后,一个重要的巨型Tridacna gigas和T.derasa青少年招募队列将种群恢复到大规模死亡前的丰度。在一个地点,55.5%的队列在五年后存活。在2017年对这两个地点的调查中,鳞片T.squamosa和河马的种群丰度略有增加。巨型Tridacna gigas和T.derasa的寿命足以在几年内成功繁殖,招募就是明证。在大量招聘的地方,高聚集性生殖中心可能会在几十年内保持运作。招聘调查中的个人增长率平均为6厘米-年-1至5年。长期增长率平均接近2 cm yr−1,最高增长率超过4 cm yr–1。气候变化将对巨蚌种群产生一些有害影响。
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引用次数: 0
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