Pub Date : 2024-08-08DOI: 10.1163/18759866-bja10068
Milica Lukač, J. Ludoški, R. Dekić, V. Milankov
The genus Delminichthys consists of allopatric species restricted to ephemeral watercourses in the karst fields of the left-bank (D. ghetaldii) and the right-bank (D. adspersus and D. jadovensis) Neretva River basin as well as in the Una River drainage (D. krbavensis). The first aim addressed questions of interspecies variation and phylogenetic relationships among Delminichthys based on time-calibrated analysis of cyt b mtDNA (cytochrome b) and COI mtDNA (cytochrome c subunit I) mitochondrial DNA genes. Species-specific haplogroups supported two mtDNA genes as suitable barcoding markers, while we additionally proposed character-based and genetic distance threshold-based delimitation of species. We confirmed that the Pliocene and Pleistocene refugium for freshwater species was the Neretva basin, promoting the diversification of the genus Delminichthys. Our second aim was to test the population structure of D. ghetaldii (Southern Dalmatian minnow) by performing an integrative study using molecular mtDNA data, linear and geometric morphometric data. We consider that the spatial aspects of the population genealogical structure of D. ghetaldii mirror the Pleistocene paleodrainages. The differentiated COI mtDNA clusters corresponding to the populations from Fatničko Polje+Dabarsko Polje and Ljubomirsko Polje+Konavosko Polje represent geographically discrete genetic entities, which should be addressed through conservation management.
D. ghetaldii）和右岸（D. adspersus和D. jadovensis）以及乌纳河流域（D. krbavensis）的岩溶河道中。第一个目标是根据对 cyt b mtDNA（细胞色素 b）和 COI mtDNA（细胞色素 c 亚单位 I）线粒体 DNA 基因的时间校准分析，解决 Delminichthys 的种间变异和系统发育关系问题。物种特异性单倍群支持两个 mtDNA 基因作为合适的条形码标记，同时我们还提出了基于特征和遗传距离阈值的物种划分方法。我们证实，上新世和更新世淡水物种的温床是内雷特瓦盆地，这促进了 Delminichthys 属的多样化。我们的第二个目标是通过使用分子 mtDNA 数据、线性和几何形态数据进行综合研究，检验 D. ghetaldii（南达尔马提亚小鱼）的种群结构。我们认为，D. ghetaldii种群系谱结构的空间方面反映了更新世的古排水系统。与来自 Fatničko Polje+Dabarsko Polje 和 Ljubomirsko Polje+Konavosko Polje 的种群相对应的分化 COI mtDNA 簇代表了地理上离散的遗传实体，应通过保护管理加以解决。
{"title":"Evolutionary history of the Balkan endemic genus Delminichthys (Teleostei, Leuciscidae) with an emphasis on the population structure of Southern Dalmatian minnow","authors":"Milica Lukač, J. Ludoški, R. Dekić, V. Milankov","doi":"10.1163/18759866-bja10068","DOIUrl":"https://doi.org/10.1163/18759866-bja10068","url":null,"abstract":"\u0000The genus Delminichthys consists of allopatric species restricted to ephemeral watercourses in the karst fields of the left-bank (D. ghetaldii) and the right-bank (D. adspersus and D. jadovensis) Neretva River basin as well as in the Una River drainage (D. krbavensis). The first aim addressed questions of interspecies variation and phylogenetic relationships among Delminichthys based on time-calibrated analysis of cyt b mtDNA (cytochrome b) and COI mtDNA (cytochrome c subunit I) mitochondrial DNA genes. Species-specific haplogroups supported two mtDNA genes as suitable barcoding markers, while we additionally proposed character-based and genetic distance threshold-based delimitation of species. We confirmed that the Pliocene and Pleistocene refugium for freshwater species was the Neretva basin, promoting the diversification of the genus Delminichthys. Our second aim was to test the population structure of D. ghetaldii (Southern Dalmatian minnow) by performing an integrative study using molecular mtDNA data, linear and geometric morphometric data. We consider that the spatial aspects of the population genealogical structure of D. ghetaldii mirror the Pleistocene paleodrainages. The differentiated COI mtDNA clusters corresponding to the populations from Fatničko Polje+Dabarsko Polje and Ljubomirsko Polje+Konavosko Polje represent geographically discrete genetic entities, which should be addressed through conservation management.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141928085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-03DOI: 10.1163/18759866-bja10064
F. Stoch, Mara Knüsel, V. Zakšek, R. Alther, Alice Salussolia, Florian Altermatt, C. Fišer, Jean‐François Flot
The genus Niphargus is the most diverse subterranean amphipod genus in the western Palearctic region but, owing to the presence of cryptic species and homoplasy, its taxonomy and biogeographic scenarios are complex, making molecular methods essential to understand its evolution. We conducted a study combining dna-based taxonomy with traditional morphotaxonomy to investigate Niphargus bihorensis Schellenberg, 1940, known from the Western Alps and Carpathians. We redescribed the type material of N. bihorensis from Bihor County, Romania, and revealed the presence of a cryptic species, N. absconditus n. sp., in the same karstic area (Pădurea Craiului Mountains). Additionally, the Alpine populations previously attributed to N. bihorensis turned out to belong to a new, not so closely related species, N. tizianoi n. sp. Phylogenetic analyses based on a concatenated dataset of one mitochondrial and two nuclear markers suggest that the N. bihorensis species complex belongs to a strongly supported clade, together with several species distributed from Switzerland to Iran.
Niphargus 属是西古北地区种类最丰富的地下片脚类动物，但由于存在隐蔽物种和同种异形现象，其分类和生物地理情况非常复杂，因此分子方法对了解其进化至关重要。我们结合基于 dna 的分类学和传统的形态分类学，对已知产于西阿尔卑斯山脉和喀尔巴阡山脉的 Niphargus bihorensis Schellenberg, 1940 进行了研究。我们重新描述了来自罗马尼亚比霍尔县的 N. bihorensis 的模式材料，并揭示了同一喀斯特地区（Pădurea Craiului 山）存在一个隐蔽物种 N. absconditus n. sp.。基于一个线粒体和两个核标记的数据集的系统发生学分析表明，N. bihorensis物种复合体与分布在瑞士到伊朗的几个物种同属于一个强支持支系。
{"title":"Integrative taxonomy of the groundwater amphipod Niphargus bihorensis Schellenberg, 1940 reveals a species-rich clade","authors":"F. Stoch, Mara Knüsel, V. Zakšek, R. Alther, Alice Salussolia, Florian Altermatt, C. Fišer, Jean‐François Flot","doi":"10.1163/18759866-bja10064","DOIUrl":"https://doi.org/10.1163/18759866-bja10064","url":null,"abstract":"\u0000The genus Niphargus is the most diverse subterranean amphipod genus in the western Palearctic region but, owing to the presence of cryptic species and homoplasy, its taxonomy and biogeographic scenarios are complex, making molecular methods essential to understand its evolution. We conducted a study combining dna-based taxonomy with traditional morphotaxonomy to investigate Niphargus bihorensis Schellenberg, 1940, known from the Western Alps and Carpathians. We redescribed the type material of N. bihorensis from Bihor County, Romania, and revealed the presence of a cryptic species, N. absconditus n. sp., in the same karstic area (Pădurea Craiului Mountains). Additionally, the Alpine populations previously attributed to N. bihorensis turned out to belong to a new, not so closely related species, N. tizianoi n. sp. Phylogenetic analyses based on a concatenated dataset of one mitochondrial and two nuclear markers suggest that the N. bihorensis species complex belongs to a strongly supported clade, together with several species distributed from Switzerland to Iran.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141269234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-23DOI: 10.1163/18759866-bja10065
Jonah Díaz-Cruz, E. Fatira, V. Tuset, Adriana Rodríguez, J. Landeira
Larval morphology in brachyuran crabs is an essential trait defining survival in the planktonic environment. The present study describes the morphology (carapace and chelipeds) of megalopa larvae in three different species (Percnon gibbesi, Cronius ruber, and Achelous hastatus) using geometric morphometric analysis (gma). The study aim was to compare the observed body patterns at interspecific and intraspecific levels. The results showed a marked interspecific distinction of C. ruber larvae based on the rostral region of carapace and cheliped length. We relate these differences to advantages in life performance, as in other animal models, suggesting that larval morphology can be another factor contributing to the invasiveness of C. ruber. At intraspecific level, we found a high morphological similarity between two distant geographical locations, indicating strong genetic connectivity in the populations of P. gibbesi from the Canary Islands. Our findings advance the importance of larval morphology for species performance during the plankton phase that eventually can determine invasiveness in brachyuran crabs. We suggest future studies focusing on the inter-population comparisons of megalopa morphology at larger spatiotemporal scales.
糠虾蟹类幼体的形态是决定其在浮游环境中生存的重要特征。本研究利用几何形态计量分析（gma）描述了三种不同物种（Percnon gibbesi、Cronius ruber 和 Achelous hastatus）巨螯蟹幼体的形态（甲壳和螯足）。研究的目的是比较在种间和种内观察到的身体形态。研究结果表明，根据喙区的躯壳和螯足的长度，C. ruber幼虫具有明显的种间差异。与其他动物模型一样，我们将这些差异与生活表现的优势联系起来，表明幼虫形态可能是导致 C. ruber 入侵性的另一个因素。在种内水平上，我们发现两个遥远的地理位置之间存在高度的形态相似性，这表明加那利群岛的 P. gibbesi 种群具有很强的遗传连通性。我们的研究结果推进了幼体形态在浮游生物阶段对物种表现的重要性，最终可决定臂蟹的入侵性。我们建议未来的研究侧重于在更大的时空尺度上对巨蟹幼体形态进行种群间比较。
{"title":"Applying geometric morphometrics in megalopa larval stages: relevance for species distribution and biological invasion studies","authors":"Jonah Díaz-Cruz, E. Fatira, V. Tuset, Adriana Rodríguez, J. Landeira","doi":"10.1163/18759866-bja10065","DOIUrl":"https://doi.org/10.1163/18759866-bja10065","url":null,"abstract":"\u0000Larval morphology in brachyuran crabs is an essential trait defining survival in the planktonic environment. The present study describes the morphology (carapace and chelipeds) of megalopa larvae in three different species (Percnon gibbesi, Cronius ruber, and Achelous hastatus) using geometric morphometric analysis (gma). The study aim was to compare the observed body patterns at interspecific and intraspecific levels. The results showed a marked interspecific distinction of C. ruber larvae based on the rostral region of carapace and cheliped length. We relate these differences to advantages in life performance, as in other animal models, suggesting that larval morphology can be another factor contributing to the invasiveness of C. ruber. At intraspecific level, we found a high morphological similarity between two distant geographical locations, indicating strong genetic connectivity in the populations of P. gibbesi from the Canary Islands. Our findings advance the importance of larval morphology for species performance during the plankton phase that eventually can determine invasiveness in brachyuran crabs. We suggest future studies focusing on the inter-population comparisons of megalopa morphology at larger spatiotemporal scales.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141104592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-10DOI: 10.1163/18759866-bja10063
G. Perina, Ana I Camacho, Nicole E White, Shae K. Callan, Jenny S. Abello, Liesel Morgan, M. Guzik
The Pilbara bioregion (Western Australia) has become a hotspot for subterranean fauna as a consequence of many surveys conducted to comply with Western Australian environmental regulation requirements. In this bioregion, mining developments can have major implications for subterranean fauna and their conservation. However the diversity and species distributions of most taxa are still poorly known, including the crustacean family Parabathynellidae. Recent studies on a widespread genus of this family (Atopobathynella) from the Pilbara highlighted several undescribed taxa with interesting patterns of distribution. In the Gudai Darri locality, the northern flank of the Hamersley Range occurs as a stepped escarpment intersected by dykes and gullies, with groundwater occurring within fractured rocks abutting the Fortescue River valley, where a separate regional aquifer occurs. This investigation aimed to observe whether stygofauna species distributions (1) reflected the separation between the two major aquifers within the Hamersley Range and the Fortescue Valley; and (2) were influenced by the presence of dykes. We examined the Atopobathynella species occurring in the study area using morphological and molecular data. The results reflected the hydrogeological complexity of the study area with six new lineages of Atopobathynella, recorded mainly in different gullies, that do not share a most recent common ancestor. Two species are described here A. pagetae sp. nov. and A. lythei sp. nov., and four additional species are delineated through preliminary morphological analyses and molecular data. This study will improve future environmental impact assessments and the understanding of Parabathynellidae taxa distribution in hydrogeological complex areas.
{"title":"An integrated study of Atopobathynella (Parabathynellidae, Bathynellacea) species reveals restricted distributions in a complex hydrogeological setting: two new species from the Pilbara (Australia)","authors":"G. Perina, Ana I Camacho, Nicole E White, Shae K. Callan, Jenny S. Abello, Liesel Morgan, M. Guzik","doi":"10.1163/18759866-bja10063","DOIUrl":"https://doi.org/10.1163/18759866-bja10063","url":null,"abstract":"\u0000The Pilbara bioregion (Western Australia) has become a hotspot for subterranean fauna as a consequence of many surveys conducted to comply with Western Australian environmental regulation requirements. In this bioregion, mining developments can have major implications for subterranean fauna and their conservation. However the diversity and species distributions of most taxa are still poorly known, including the crustacean family Parabathynellidae. Recent studies on a widespread genus of this family (Atopobathynella) from the Pilbara highlighted several undescribed taxa with interesting patterns of distribution. In the Gudai Darri locality, the northern flank of the Hamersley Range occurs as a stepped escarpment intersected by dykes and gullies, with groundwater occurring within fractured rocks abutting the Fortescue River valley, where a separate regional aquifer occurs. This investigation aimed to observe whether stygofauna species distributions (1) reflected the separation between the two major aquifers within the Hamersley Range and the Fortescue Valley; and (2) were influenced by the presence of dykes. We examined the Atopobathynella species occurring in the study area using morphological and molecular data. The results reflected the hydrogeological complexity of the study area with six new lineages of Atopobathynella, recorded mainly in different gullies, that do not share a most recent common ancestor. Two species are described here A. pagetae sp. nov. and A. lythei sp. nov., and four additional species are delineated through preliminary morphological analyses and molecular data. This study will improve future environmental impact assessments and the understanding of Parabathynellidae taxa distribution in hydrogeological complex areas.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140993524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-05DOI: 10.1163/18759866-bja10059
H. Kise, Javier Montenegro, Paulo V.F. Corrêa, Marcos V.C. Clemente, Paulo Y.G. Sumida, B. Hoeksema, J. D. Reimer
The integrated approach of molecular phylogenetic and morphological analyses has revolutionized the systematics and our understanding of the evolutionary relationships of marine taxa. One such group is the hexacorallian order Zoantharia Rafinesque, 1815. The monotypic genus Thoracactis Gravier, 1918 has been little investigated since its placement within the order Zoantharia more than 100 years ago. Here, we examined museum specimens collected from the Cape Verde Islands (eastern Atlantic) and newly collected specimens from Brazil (southwestern Atlantic), using a combined molecular and morphological approach. Our results conclusively show Thoracactis to be referable to the family Parazoanthidae. Morphological data show that Thoracactis topsenti Gravier, 1918, the type species of this monotypic genus, has a cyclically transitional arrangement of its sphincter muscle, and this arrangement has previously been reported from the Parazoanthidae. Thoracactis can be distinguished from other hexasterophoran glass-sponge-associated genera (Churabana Kise, Montenegro & Reimer, 2022, Parachurabana Kise, 2023, and Vitrumanthus Kise, Montenegro & Reimer, 2022) by a combination of morphological, ecological and molecular phylogenetic data. In addition, molecular phylogenetic analyses clearly indicate that Thoracactis topsenti is placed within Parazoanthidae. These results are yet another demonstration of the utility of comprehensive combined approaches. From now, research attention should focus on the revision of remaining taxonomic questions within the family Epizoanthidae, with the goal of a comprehensively revised suborder Macrocnemina within reach.
{"title":"A taxonomic revision of the sponge-associated genus Thoracactis Gravier, 1918 (Anthozoa: Zoantharia) based on an integrated approach","authors":"H. Kise, Javier Montenegro, Paulo V.F. Corrêa, Marcos V.C. Clemente, Paulo Y.G. Sumida, B. Hoeksema, J. D. Reimer","doi":"10.1163/18759866-bja10059","DOIUrl":"https://doi.org/10.1163/18759866-bja10059","url":null,"abstract":"\u0000The integrated approach of molecular phylogenetic and morphological analyses has revolutionized the systematics and our understanding of the evolutionary relationships of marine taxa. One such group is the hexacorallian order Zoantharia Rafinesque, 1815. The monotypic genus Thoracactis Gravier, 1918 has been little investigated since its placement within the order Zoantharia more than 100 years ago. Here, we examined museum specimens collected from the Cape Verde Islands (eastern Atlantic) and newly collected specimens from Brazil (southwestern Atlantic), using a combined molecular and morphological approach. Our results conclusively show Thoracactis to be referable to the family Parazoanthidae. Morphological data show that Thoracactis topsenti Gravier, 1918, the type species of this monotypic genus, has a cyclically transitional arrangement of its sphincter muscle, and this arrangement has previously been reported from the Parazoanthidae. Thoracactis can be distinguished from other hexasterophoran glass-sponge-associated genera (Churabana Kise, Montenegro & Reimer, 2022, Parachurabana Kise, 2023, and Vitrumanthus Kise, Montenegro & Reimer, 2022) by a combination of morphological, ecological and molecular phylogenetic data. In addition, molecular phylogenetic analyses clearly indicate that Thoracactis topsenti is placed within Parazoanthidae. These results are yet another demonstration of the utility of comprehensive combined approaches. From now, research attention should focus on the revision of remaining taxonomic questions within the family Epizoanthidae, with the goal of a comprehensively revised suborder Macrocnemina within reach.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140739776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.1163/18759866-bja10060
J. Arntzen
The herpetofauna of the Iberian Peninsula is relatively well-researched, yet detailed studies, at least in part relying on molecular genetic data, continue to reveal taxa new to science, mostly species and subspecies. Newts of the genus Triturus are one such group with undiscovered yet taxonomically relevant variation, as shown by the recent description of new (sub)species of pygmy newts (T. pygmaeus, T. rudolfi). The marbled newt, Triturus marmoratus, shows an equally deep and geographically coherent spatial-genetic diversification. It is here shown that a northern and a southern group are characterized by different mitochondrial dna profiles and are also differentiated in morphometry and colouration pattern. With no firm evidence for selection against intermediate genotypes, the southern group is described at the subspecies level, as T. marmoratus harmannis ssp. nov. The subspecies’ contact zone is situated at ca. 41.5 northern latitude and stretches from the Atlantic coast near Porto, Portugal to the northeast of Madrid, Spain.
伊比利亚半岛的爬行动物研究相对较多，但详细的研究（至少部分依赖于分子遗传数据）仍在继续揭示科学界的新分类群，主要是物种和亚种。最近描述的侏儒蝾螈新（亚）种（T. pygmaeus、T. rudolfi）就表明，蝾螈属就是这样一个尚未发现但在分类学上具有相关变异的类群。大理石纹蝾螈（Triturus marmoratus）也表现出同样深刻的、地理上一致的空间遗传多样性。研究表明，北部和南部群体具有不同的线粒体 DNA 图谱，在形态和颜色模式上也有差异。由于没有确凿证据表明存在对中间基因型的选择，因此将南方组描述为亚种，即 T. marmoratus harmannis ssp.该亚种的接触区位于约北纬 41.5 度，绵延约 5 公里。亚种接触区位于北纬 41.5 度左右，从葡萄牙波尔图附近的大西洋海岸延伸到西班牙马德里东北部。
{"title":"A subspecies of marbled newt (Triturus marmoratus) in the Iberian Peninsula newly resolved from congruent nuclear and mitochondrial dna data","authors":"J. Arntzen","doi":"10.1163/18759866-bja10060","DOIUrl":"https://doi.org/10.1163/18759866-bja10060","url":null,"abstract":"\u0000The herpetofauna of the Iberian Peninsula is relatively well-researched, yet detailed studies, at least in part relying on molecular genetic data, continue to reveal taxa new to science, mostly species and subspecies. Newts of the genus Triturus are one such group with undiscovered yet taxonomically relevant variation, as shown by the recent description of new (sub)species of pygmy newts (T. pygmaeus, T. rudolfi). The marbled newt, Triturus marmoratus, shows an equally deep and geographically coherent spatial-genetic diversification. It is here shown that a northern and a southern group are characterized by different mitochondrial dna profiles and are also differentiated in morphometry and colouration pattern. With no firm evidence for selection against intermediate genotypes, the southern group is described at the subspecies level, as T. marmoratus harmannis ssp. nov. The subspecies’ contact zone is situated at ca. 41.5 northern latitude and stretches from the Atlantic coast near Porto, Portugal to the northeast of Madrid, Spain.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140765043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-29DOI: 10.1163/18759866-bja10058
Mojgan Asadollahi, F. Ahmadzadeh, N. Keyghobadi
The impact of climate fluctuations on the genetic diversity and distribution of species is of particular concern for large mammals that are already at risk of extinction. In this study, we investigated the genetic status of populations, the evolutionary relationships, and the current and future state of population dispersion of the goitered gazelle, Gazella subgutturosa, using 109 mtDNA sequences (cytb) and species distribution modeling. We assessed the impact of past (Last Glacial Maximum [lgm: 21 Kya] and Mid-Holocene [6 Kya]), current, and future (2070) climate on the phylogeography and spatial distribution of the species. Our results indicate evidence of divergence of two main clades (G. subgutturosa subgutturosa, and G. subgutturosa yarkandensis) (1.052 Mya) and a further split between two clades of G. s. subgutturosa (Middle Eastern and Central Iranian) in the middle Pleistocene. Historical species distribution models suggest the species’ range has not changed much across all periods examined, but there has been a decreasing trend from 21k to the current. Future climate projections (bcc-csm1 and ccsm4, rcp s 4.5 and 6 scenarios) predict a contraction of suitable habitat at the northern and southern edges of the species’ current distribution, shifting the range to the center of the study area. Biogeographic analyses suggest that vicariance and dispersal events have shaped the genetic structure of G. subgutturosa. Our findings suggest that the current genetic structure of the species is potentially related to Pleistocene climatic fluctuations and refuges (Alborz, Zagros, and Kope Dagh Mountains) during cold periods. The study highlights the importance of understanding the genetic status of populations and their evolutionary relationships to effectively prevent further declines of species at risk of extinction.
{"title":"Unraveling goitered gazelle (Gazella subgutturosa) diversification: insights from phylogeography and species distribution modeling","authors":"Mojgan Asadollahi, F. Ahmadzadeh, N. Keyghobadi","doi":"10.1163/18759866-bja10058","DOIUrl":"https://doi.org/10.1163/18759866-bja10058","url":null,"abstract":"\u0000The impact of climate fluctuations on the genetic diversity and distribution of species is of particular concern for large mammals that are already at risk of extinction. In this study, we investigated the genetic status of populations, the evolutionary relationships, and the current and future state of population dispersion of the goitered gazelle, Gazella subgutturosa, using 109 mtDNA sequences (cytb) and species distribution modeling. We assessed the impact of past (Last Glacial Maximum [lgm: 21 Kya] and Mid-Holocene [6 Kya]), current, and future (2070) climate on the phylogeography and spatial distribution of the species. Our results indicate evidence of divergence of two main clades (G. subgutturosa subgutturosa, and G. subgutturosa yarkandensis) (1.052 Mya) and a further split between two clades of G. s. subgutturosa (Middle Eastern and Central Iranian) in the middle Pleistocene. Historical species distribution models suggest the species’ range has not changed much across all periods examined, but there has been a decreasing trend from 21k to the current. Future climate projections (bcc-csm1 and ccsm4, rcp s 4.5 and 6 scenarios) predict a contraction of suitable habitat at the northern and southern edges of the species’ current distribution, shifting the range to the center of the study area. Biogeographic analyses suggest that vicariance and dispersal events have shaped the genetic structure of G. subgutturosa. Our findings suggest that the current genetic structure of the species is potentially related to Pleistocene climatic fluctuations and refuges (Alborz, Zagros, and Kope Dagh Mountains) during cold periods. The study highlights the importance of understanding the genetic status of populations and their evolutionary relationships to effectively prevent further declines of species at risk of extinction.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-29DOI: 10.1163/18759866-bja10061
D. Copilaș‐Ciocianu, Viorel Ionesi
The Ponto-Caspian radiation of gammaroid amphipods is one of the world’s most diverse lacustrine crustacean radiations as well as the only lacustrine amphipod radiation with a fossil record (dating back 9 Ma). However, the phyletic relationship between fossils and extant species was never formally investigated, hampering our evolutionary understanding of this diverse clade. Here, we present the first morphology-based phylogeny (114 characters) of Ponto-Caspian gammaroids that includes 99% of extant taxa, all previously known fossils, as well as newly discovered fossil specimens from the Late Miocene (10.5 Ma) of eastern Romania. Our phylogenetic and phenetic results strongly support the monophyly of all fossil taxa. However, despite its widespread Late Miocene distribution throughout the Paratethys Sea, this fossil clade left no modern descendants. Its exact phylogenetic position is ambiguous, although it is nested in the radiation’s crown group. Morphometric analyses further indicate that fossil species occupy a narrower and peripheral morphospace relative to extant taxa. Our results support the assignment of the newly discovered Romanian fossils to a new genus, Eogmelina gen. nov. with two new species Eogmelina moldavica gen. et sp. nov. and Eogmelina prisca gen. et sp. nov. Finally, our findings call for a fundamental systematic restructuring of Ponto-Caspian gammaroids at genus and family level.
{"title":"New Miocene fossil taxa illuminate the evolution and paleobiogeography of the Ponto-Caspian gammaroid amphipod radiation","authors":"D. Copilaș‐Ciocianu, Viorel Ionesi","doi":"10.1163/18759866-bja10061","DOIUrl":"https://doi.org/10.1163/18759866-bja10061","url":null,"abstract":"\u0000The Ponto-Caspian radiation of gammaroid amphipods is one of the world’s most diverse lacustrine crustacean radiations as well as the only lacustrine amphipod radiation with a fossil record (dating back 9 Ma). However, the phyletic relationship between fossils and extant species was never formally investigated, hampering our evolutionary understanding of this diverse clade. Here, we present the first morphology-based phylogeny (114 characters) of Ponto-Caspian gammaroids that includes 99% of extant taxa, all previously known fossils, as well as newly discovered fossil specimens from the Late Miocene (10.5 Ma) of eastern Romania. Our phylogenetic and phenetic results strongly support the monophyly of all fossil taxa. However, despite its widespread Late Miocene distribution throughout the Paratethys Sea, this fossil clade left no modern descendants. Its exact phylogenetic position is ambiguous, although it is nested in the radiation’s crown group. Morphometric analyses further indicate that fossil species occupy a narrower and peripheral morphospace relative to extant taxa. Our results support the assignment of the newly discovered Romanian fossils to a new genus, Eogmelina gen. nov. with two new species Eogmelina moldavica gen. et sp. nov. and Eogmelina prisca gen. et sp. nov. Finally, our findings call for a fundamental systematic restructuring of Ponto-Caspian gammaroids at genus and family level.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-08DOI: 10.1163/18759866-bja10057
J. Arntzen
Iberian populations of large-bodied newts, with Triturus marmoratus in the north and T. pygmaeus in the south of the peninsula, were studied for external morphology, mitochondrial dna and for a panel of single nucleotide polymorphisms. This confirmed the species’ low level of interspecific hybridization and their parapatric, mosaic-like mutual range border across the peninsula. The genetic data also revealed substantial variation within T. pygmaeus, with narrow (0.43–35.2 km) clinal transitions in the very centre of Portugal. Similar clines were observed for body size and colouration pattern. Pygmy newts in the west of Portugal are larger, with a more striped (less reticulated) green dorso-lateral colouration pattern than those in the east and south of the country. The western group of populations is described as a new species, Triturus rudolfi sp. nov., on account of a long, ca. 2.5 Ma, independent evolutionary history and limited hybridization with its sister-species T. pygmaeus, suggesting selection against hybrid offspring. The range of the newly described species may be restricted to the wider Lisbon Peninsula, stretching northwards along the Atlantic coast to the river Vouga estuary. Inland, the range border may be set by the lower Tejo River, or by the currently wide area of agricultural land at either side of that river, that may accommodate a residual hybrid zone. The close contact between both pygmy newt species is effectively limited to a ca. 20 × 40 km area directly north of the town Entroncamento, where T. rudolfi sp. nov. is sandwiched in between T. marmoratus and the river Tejo.
{"title":"Morphological and genetic diversification of pygmy and marbled newts, with the description of a new species from the wider Lisbon Peninsula (Triturus, Salamandridae)","authors":"J. Arntzen","doi":"10.1163/18759866-bja10057","DOIUrl":"https://doi.org/10.1163/18759866-bja10057","url":null,"abstract":"\u0000Iberian populations of large-bodied newts, with Triturus marmoratus in the north and T. pygmaeus in the south of the peninsula, were studied for external morphology, mitochondrial dna and for a panel of single nucleotide polymorphisms. This confirmed the species’ low level of interspecific hybridization and their parapatric, mosaic-like mutual range border across the peninsula. The genetic data also revealed substantial variation within T. pygmaeus, with narrow (0.43–35.2 km) clinal transitions in the very centre of Portugal. Similar clines were observed for body size and colouration pattern. Pygmy newts in the west of Portugal are larger, with a more striped (less reticulated) green dorso-lateral colouration pattern than those in the east and south of the country. The western group of populations is described as a new species, Triturus rudolfi sp. nov., on account of a long, ca. 2.5 Ma, independent evolutionary history and limited hybridization with its sister-species T. pygmaeus, suggesting selection against hybrid offspring. The range of the newly described species may be restricted to the wider Lisbon Peninsula, stretching northwards along the Atlantic coast to the river Vouga estuary. Inland, the range border may be set by the lower Tejo River, or by the currently wide area of agricultural land at either side of that river, that may accommodate a residual hybrid zone. The close contact between both pygmy newt species is effectively limited to a ca. 20 × 40 km area directly north of the town Entroncamento, where T. rudolfi sp. nov. is sandwiched in between T. marmoratus and the river Tejo.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140257738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-15DOI: 10.1163/18759866-bja10056
Yuxia Yang, Wei Zhao, Haoyu Liu
In this study, Poinarelektronmiles Fanti & Damgaard, 2020 is considered as a junior synonym of Burmomiles Fanti, Damgaard & Ellenberger, 2018, since no generic diagnostic differences can be found in their type species except for the elytral length, which is a yet unstable and more ecology-related character. The two hitherto known species of Poinarelektronmiles are transferred to Burmomiles or Sanaungulus Fanti, Damgaard & Ellenberger, 2018, including B. ellenbergeri (Fanti & Damgaard, 2020) comb. nov. and S. cuaroni (Bramanti & Fanti, 2022) comb. nov. Meanwhile, B. dominikiweissbachi (Fanti & Müller, 2022) comb. nov., B. kachinensis (Fanti & Müller, 2022) comb. nov. and B. lethi (Fanti & Damgaard, 2020) comb. nov. are transferred from Sanaungulus. Six Sanaungulus species are suggested to be placed in Cantharidae incertae sedis, including S. electrum Fanti & Müller, 2022, S. franziskaeweissbachae Fanti & Müller, 2022, S. nalae Fanti & Müller, 2022, S. morellii Fanti & Damgaard, 2020, S. rosenzweigi Fanti & Damgaard, 2020 and S. ruicheni (Hsiao & Huang, 2018), due to their absence of antennal appendages in males. The gender identity for S. kirstenaeweissbachae Fanti & Müller, 2022 and S. cuaroni originally defined as females are corrected into males, according to their pectinate antennae. Additionally, four new species, S. marginalis sp. nov., S. longicornis sp. nov., S. elongaticollis sp. nov., and S. undecimus sp. nov., are described and illustrated. These results will significantly complement and expand our knowledge on the Burmite cantharid diversity.
{"title":"Taxonomic notes and new species of Burmomiles and Sanaungulus (Coleoptera, Cantharidae) from northern Myanmar during the late Mesozoic","authors":"Yuxia Yang, Wei Zhao, Haoyu Liu","doi":"10.1163/18759866-bja10056","DOIUrl":"https://doi.org/10.1163/18759866-bja10056","url":null,"abstract":"\u0000In this study, Poinarelektronmiles Fanti & Damgaard, 2020 is considered as a junior synonym of Burmomiles Fanti, Damgaard & Ellenberger, 2018, since no generic diagnostic differences can be found in their type species except for the elytral length, which is a yet unstable and more ecology-related character. The two hitherto known species of Poinarelektronmiles are transferred to Burmomiles or Sanaungulus Fanti, Damgaard & Ellenberger, 2018, including B. ellenbergeri (Fanti & Damgaard, 2020) comb. nov. and S. cuaroni (Bramanti & Fanti, 2022) comb. nov. Meanwhile, B. dominikiweissbachi (Fanti & Müller, 2022) comb. nov., B. kachinensis (Fanti & Müller, 2022) comb. nov. and B. lethi (Fanti & Damgaard, 2020) comb. nov. are transferred from Sanaungulus. Six Sanaungulus species are suggested to be placed in Cantharidae incertae sedis, including S. electrum Fanti & Müller, 2022, S. franziskaeweissbachae Fanti & Müller, 2022, S. nalae Fanti & Müller, 2022, S. morellii Fanti & Damgaard, 2020, S. rosenzweigi Fanti & Damgaard, 2020 and S. ruicheni (Hsiao & Huang, 2018), due to their absence of antennal appendages in males. The gender identity for S. kirstenaeweissbachae Fanti & Müller, 2022 and S. cuaroni originally defined as females are corrected into males, according to their pectinate antennae. Additionally, four new species, S. marginalis sp. nov., S. longicornis sp. nov., S. elongaticollis sp. nov., and S. undecimus sp. nov., are described and illustrated. These results will significantly complement and expand our knowledge on the Burmite cantharid diversity.","PeriodicalId":55210,"journal":{"name":"Contributions to Zoology","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140455513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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