Biodiversity Data JournalPub Date : 2026-09-11eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e204046
Shuo Liu, Chao Bu, Tao Deng, Jinming Bai, Bin Luo, Mian Hou, Xiaoping Li, Jiansong Zhang, Wenyu Li, Zhihong Wang, Yanfei Feng, JiShan Wang, Dingqi Rao
{"title":"Taxonomic assessment of <i>Zhangixalus puerensis</i> (He, 1999) sensu lato (Anura, Rhacophoridae), with description of two cryptic species.","authors":"Shuo Liu, Chao Bu, Tao Deng, Jinming Bai, Bin Luo, Mian Hou, Xiaoping Li, Jiansong Zhang, Wenyu Li, Zhihong Wang, Yanfei Feng, JiShan Wang, Dingqi Rao","doi":"10.3897/BDJ.14.e204046","DOIUrl":"10.3897/BDJ.14.e204046","url":null,"abstract":"<p><strong>Background: </strong><i>Zhangixalus puerensis</i> sensu lato was previously considered to be distributed in most parts of Yunnan and northern Vietnam. Some studies have implied that <i>Z. puerensis</i> sensu lato contains multiple independent species. However, the taxonomic status of <i>Z. puerensis</i> sensu lato remains unresolved.</p><p><strong>New information: </strong>Based on the sequences obtained from GenBank and our newly-generated sequences, we performed a taxonomic assessment of <i>Zhangixalus puerensis</i> sensu lato. Phylogenetic analysis revealed four distinct lineages within <i>Z. puerensis</i> sensu lato. We described two of the four lineages as two new species. The first new species from Wenshan Prefecture, Yunnan, China and Ha Giang Province, Vietnam, can be distinguished from its congeners by having a relatively small body size, head being wider than long, heels not meeting, tibiotarsal articulation reaching centre or anterior margin of tympanum, fifth toe being longer than third toe, nuptial pad being present on first finger and dorsal surface being green with more or less dark-edged brown spots. The second new species from Lincang City, Yunnan Province, China, can be distinguished from its congeners by having a relatively small body size, head being wider than long, heels not meeting, tibiotarsal articulation reaching posterior margin or centre of tympanum, fifth toe and third toe being approximately equal in length, dorsal surface green with no or a few or many dark-edged brown spots. In addition, the taxonomic status of populations previously considered to be <i>Z. puerensis</i> from north-western Yunnan of China and north-western Vietnam needs further research to determine.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e204046"},"PeriodicalIF":1.3,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13589299/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149009277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-09-11eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e212593
Dinh-Sac Pham, Vu Duc Toan
{"title":"Corrigendum to \"First records of <i>Epeus bicuspidatus</i> and description of a new species of <i>Epeus</i> (Araneae, Salticidae) from Vietnam\".","authors":"Dinh-Sac Pham, Vu Duc Toan","doi":"10.3897/BDJ.14.e212593","DOIUrl":"10.3897/BDJ.14.e212593","url":null,"abstract":"<p><p>This corrigendum serves to recognise the official museum depository and formal registration codes for the type specimens of the <i>Epeus taybac</i> Vu & Pham, 2025.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e212593"},"PeriodicalIF":1.3,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13589294/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149009274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-09-10eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e199297
Dawn R Renae Cook-Price, Sunchai Makchai, Pongthep Suwanwaree
{"title":"Snakes of Ko Pha-ngan in the Surat Thani Province, Thailand.","authors":"Dawn R Renae Cook-Price, Sunchai Makchai, Pongthep Suwanwaree","doi":"10.3897/BDJ.14.e199297","DOIUrl":"10.3897/BDJ.14.e199297","url":null,"abstract":"<p><strong>Background: </strong>Insular snake species are often under-assessed, rendering them vulnerable to habitat encroachment and other anthropogenic threats. The aim of this study was to compile a comprehensive checklist of snakes on Ko Pha-ngan, Thailand. Data were collected via transect surveys, drift line fence traps and opportunistic encounters from February 2021 to September 2023.</p><p><strong>New information: </strong>Twenty-one snake species were detected across three main habitats (human settlement, human-disturbed forest and national park forest) with the highest species diversity observed in the Than Sadet - Ko Pha-ngan National Park protected areas (20 species). <i>Lycodon capucinus</i>, <i>Chrysopelea ornata</i>, <i>Ahaetulla prasina</i> and <i>Boiga cyanea</i> were the most abundant species detected during surveys. Thirteen species were detected in all three habitat types, indicating broad habitat tolerance amongst several taxa. Two species, <i>Ptyas korros</i> and <i>Ophiophagus bungarus</i>, are assessed as Near Threatened and Vulnerable, respectively, according to the IUCN Red List of Threatened Species. Finally, the island harbours one endemic species, <i>Oligodon phangan</i>. This study highlights the need for additional monitoring to better understand the dynamics of insular populations and to assess the ongoing impacts of tourism-driven development on species within finite island habitats.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e199297"},"PeriodicalIF":1.3,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13586848/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149009334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Long-term camera trap monitoring of mammalian diversity and activity rhythms of threatened species in Xianxialing Nature Reserve, Zhejiang Province, China.","authors":"Zhu-Cheng Yu, Xiao-Yi Wang, Chang Gao, Ke Wang, Mei-Fang Wang, Bai-Wei Gao, Wei Zhao, Si-Han Wu, Zhe-Ping Xu, Xiao Zhou, Lin-Li Xu, Jie Yu, Lotanna Micah Nneji, Jin-Min Chen, Wei Jin, Ping Shin Lee","doi":"10.3897/BDJ.14.e208779","DOIUrl":"https://doi.org/10.3897/BDJ.14.e208779","url":null,"abstract":"<p><strong>Background: </strong>Research on mammalian diversity and activity rhythms is critical for understanding biological adaptation, evolutionary processes and the development of effective ecological conservation strategies. Xianxialing Nature Reserve in Zhejiang Province is an area with rich mammalian biodiversity, yet no study has been conducted on mammalian activity rhythms in the Reserve. This study aims to systematically monitor and document mammalian diversity and characterise the activity rhythms of threatened species in the Xianxialing Nature Reserve using infrared camera traps.</p><p><strong>New information: </strong>Between January 2021 and November 2023, this survey used 97 continuously monitored infrared cameras, generating totals of 71,879 effective camera-days of data. In total, 24,919 effective records were obtained, representing 12 independently detected non-rodent mammal species belonging to seven families, 10 genera and four orders. Based on the Relative Abundance Index (RAI), the five most abundant species were Reeves' Muntjac (<i>Muntiacus reevesi</i>), Masked Palm Civet (<i>Paguma larvata</i>), Hog Badger (<i>Arctonyx collaris</i>), Chinese Ferret-badger (<i>Melogale moschata</i>) and Rhesus Macaque (<i>Macaca mulatta</i>). Compared with diurnal species, nocturnal species, such as the Masked Palm Civet, showed a preference for lower-altitude habitats during winter. These spatial distribution patterns can be attributed to a combination of thermoregulatory strategies and other ecological drivers. Overall, the findings provide an objective assessment of the current status of mammalian diversity in Xianxialing Nature Reserve. Studying mammal activity rhythms offers baseline data and practical insights for the dynamic conservation of nationally protected species in China's subtropical nature reserves.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e208779"},"PeriodicalIF":1.3,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13579192/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148992619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-09-08eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e191625
Amaëlle Bisch, Pauline Stephan, Sophie Elliott, Thomas Barreau, Caroline Bousquet, Laurent Colombet, Ghislain Dorémus, Michel Marengo, Matthieu Lapinski, Alexandra Rohr, François Sichel, Eric Stephan, Anthony Acou
{"title":"Distribution dataset of chondrichthyan species occurring in French metropolitan waters and across the North-East Atlantic.","authors":"Amaëlle Bisch, Pauline Stephan, Sophie Elliott, Thomas Barreau, Caroline Bousquet, Laurent Colombet, Ghislain Dorémus, Michel Marengo, Matthieu Lapinski, Alexandra Rohr, François Sichel, Eric Stephan, Anthony Acou","doi":"10.3897/BDJ.14.e191625","DOIUrl":"https://doi.org/10.3897/BDJ.14.e191625","url":null,"abstract":"<p><strong>Background: </strong>Chondrichthyans (chimaeras, sharks, skates and rays) are the most threatened vertebrate group in the marine environment. Currently, 106 species (7 chimaeras, 40 skates and rays, 59 sharks) of chondrichthyans are known to occur regularly or occasionally in metropolitan French waters. However, the distribution of these species remains poorly documented due to a lack of data. In this context, a comprehensive dataset was compiled to support the recently published <i>Atlas des Chondrichtyens de France métropolitaine</i> (Chondrichthyan Distribution Atlas within North-East Atlantic and French Mediterranean waters), aiming to provide an updated and standardised overview of their occurrence in French metropolitan and adjacent marine waters.</p><p><strong>New information: </strong>This dataset compiles 177,042 events (e.g. fishing operations, transects, sightings) collected between 2003 and 2021 across the North-East Atlantic (Greater North Sea, Celtic Seas, Bay of Biscay and Iberian Coast) and Western Mediterranean Sea. These events comprise 169,519 occurrence records representing 86 chondrichthyan species (7 chimaeras, 35 skates and rays, 44 sharks). The dataset includes fisheries-dependent data, scientific survey data and citizen-science observations. Each record was carefully checked for taxonomic accuracy, geographical plausibility, depth, and biological (i.e. individual length) compliance with existing literature. French experts further reviewed the reliability of occurrences for the species within their taxonomic area of expertise. The dataset is publicly available through the Global Biodiversity Information Facility (GBIF) and can be found under: https://doi.org/10.15468/xq94ag.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e191625"},"PeriodicalIF":1.3,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13579195/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148992566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"First description of the female subimago of <i>Behningia baei</i> McCafferty & Jacobus, 2006 (Ephemeroptera, Behningiidae), with notes on nymphal sand-burrowing behaviour.","authors":"Sedtawut Kwanboon, Damrong Chainthong, Boonsatien Boonsoong","doi":"10.3897/BDJ.14.e210906","DOIUrl":"10.3897/BDJ.14.e210906","url":null,"abstract":"<p><strong>Background: </strong><i>Behningia baei</i> McCafferty & Jacobus, 2006 was only known from the nymphal stage and recorded from two localities in Thailand. While the winged stages have been described for four congeners of <i>Behningia</i>, those of <i>B. baei</i> have not yet been documented.</p><p><strong>New information: </strong>Here, we present the first morphological description of the female subimago of <i>B. baei</i> based on reared specimens collected from sandy-bottomed rivers in northern Thailand. We compare diagnostic characters of the female subimago with those of known species of <i>Behningia</i>. In addition, we provide data on burrowing behaviour in fine-sand substrate. Our findings bring new biological and behavioural data for this rare genus.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e210906"},"PeriodicalIF":1.3,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13570253/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-09-02eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e208358
Phillip N Hogan, Ralph Edward DeWalt, Scott A Grubbs
{"title":"Stoneflies (Insecta, Plecoptera) of the Midwest, USA: species checklist derived from nearly 170 Years of collection records.","authors":"Phillip N Hogan, Ralph Edward DeWalt, Scott A Grubbs","doi":"10.3897/BDJ.14.e208358","DOIUrl":"10.3897/BDJ.14.e208358","url":null,"abstract":"<p><strong>Background: </strong>The landscape in the Midwest, USA (limited to the states of Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio and Wisconsin) has undergone dramatic shifts from the historic natural settings to agricultural and urbanised landscapes over the past two centuries following European colonisation. These shifts have restructured community assemblages and species distributions of aquatic insects, particularly stoneflies, an insect order susceptible to regional and local extirpations following anthropogenic, climatic and environmental alterations. Within the Midwest, species extirpations at a broad scale have been documented for multiple states, including Illinois, Indiana, Michigan and Ohio. Illinois and Minnesota appear to have lost endemics to extinction. To better understand how species distributions have shifted over the past two centuries, we have compiled records of species occurrences from the mid-19<sup>th</sup> century to the present day.</p><p><strong>New information: </strong>In preparation for a comprehensive assessment of the Midwest stonefly fauna, we present a species occurrence dataset composed of approximately 50,000 records. This dataset spans from the early 1860s through 2025. These data have been compiled from 26 regional natural history museums, a review of published literature records and collecting efforts by the authors since 1987. This dataset presents occurrence records for 157 regional species from 41 genera, representing nine of ten Nearctic stonefly families. Of these species, 21 are new state records, including three species recorded for the first time within the Midwest region. The new state records include two from Illinois, two from Indiana, one from Iowa, one from Michigan, nine from Minnesota, five from Ohio and seven from Wisconsin. Overall, these updates bring the total known richness for Illinois to 85, Indiana to 93, Iowa to 47, Michigan to 71, Minnesota to 65, Ohio to 109 and Wisconsin to 68. State richness declines along east-west and south-north gradients. The five most species-rich families were Perlidae (n = 42), Perlodidae (n = 38), Capniidae (n = 21), Chloroperlidae (n = 15) and Nemouridae (n = 15). The contemporary Midwest fauna is diminished compared to historical community richness and composition, through both regional and state extirpations and extinctions. Despite intensive contemporary collection efforts throughout the region, 13 species are known solely from historical collections. Each Midwest state experienced extirpations. The greatest losses occurred in Illinois, with 16 species that were absent in collections made after 1970. This was followed by Indiana (n = 9), Michigan (n = 8), Ohio (n = 8), Minnesota (n = 7), Wisconsin (n = 2) and Iowa (n = 1). The greatest losses were within the families Perlidae and Perlodidae, with 17 and eight species extirpated from at least one state by 1970, respectively.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e208358"},"PeriodicalIF":1.3,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13559523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148932010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-09-01eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e199400
Mirana Gauche, Némo Fontanié, Edmond Grangaud, Nicholas Wilding, Rodolphe Rougerie, Marie Lapègue, Claudine Ah-Peng
{"title":"Contribution to the DNA barcode reference library for Réunion Pteridophyta.","authors":"Mirana Gauche, Némo Fontanié, Edmond Grangaud, Nicholas Wilding, Rodolphe Rougerie, Marie Lapègue, Claudine Ah-Peng","doi":"10.3897/BDJ.14.e199400","DOIUrl":"10.3897/BDJ.14.e199400","url":null,"abstract":"<p><strong>Background: </strong>Expanding DNA barcode reference libraries is essential to support ecological surveys, conservation assessments and future metabarcoding applications. Réunion Island (Mascarene's Archipelago) hosts a rich diversity of pteridophytes despite its small surface area. Although the chloroplastic rbcL sequences are available for several fern taxa in public databases, additional regions with high variability such as trnH-psbA are still under-represented for the Réunion pteridoflora. This dataset has been produced in the framework of the FRBOL (FRench Barcode Of Life) network.</p><p><strong>New information: </strong>The current curated DNA barcode dataset contains 84 pteridophyte species from Réunion Island, representing approximately 25% of the pteridophyte species present on the Island. All specimens were morphologically identified by a specialist and are preserved as vouchers in the public herbarium of the University of Réunion (REU). A total of 163 sequences of rbcLa (86) and trnH-psbA (77) were generated and deposited in the Barcode of Life Data System (BOLD) with complete associated metadata and photos. While numerous rbcLa sequences were already available on GenBank, our dataset provides newlygenerated sequences linked to curated vouchers on BOLD and substantially increases the representation of trnH-psbA for the Island's pteridophytes. Additionally, this work documents the first record of <i>Pteris ensiformis</i> Burm.f., an exotic species for Réunion. Morphological examination allowed the identification of this newly-recorded species, which was corroborated by molecular analyses.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e199400"},"PeriodicalIF":1.3,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13555132/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148921832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-08-31eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e208590
Andrea Criado-Flórez, Marika Asztalos, Carolin Kindler, Adrian Neumann, Nadine Schultze, Uwe Fritz
{"title":"Mitochondrial haplotypes and microsatellite genotypes for grass and water snakes of the genus <i>Natrix</i>: A range-wide resource (Squamata, Natricidae).","authors":"Andrea Criado-Flórez, Marika Asztalos, Carolin Kindler, Adrian Neumann, Nadine Schultze, Uwe Fritz","doi":"10.3897/BDJ.14.e208590","DOIUrl":"10.3897/BDJ.14.e208590","url":null,"abstract":"<p><strong>Background: </strong>Grass and water snakes of the genus <i>Natrix</i> are a dominant component of the Palaearctic reptile fauna, with a broad distribution ranging from North Africa across much of Europe to Lake Baikal in Central Asia. As part of a series of studies on the phylogeography and systematics of the group, a large database of mtDNA sequences and microsatellite genotypes was compiled for all five <i>Natrix</i> species.</p><p><strong>New information: </strong>We present a range-wide genetic database comprising georeferenced information for approximately 3,700 snakes belonging to the grass snake complex (i.e. <i>Natrix astreptophora</i>, <i>N. helvetica</i>, <i>N. natrix</i>), <i>N. maura</i>, <i>N. tessellata</i> and interspecific hybrids. This unique repository can serve as a comprehensive resource for phylogeographic, population genetic and systematic studies, as well as for monitoring hybrid zone dynamics and future anthropogenic hybridisation and admixture resulting from translocated non-native snakes.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e208590"},"PeriodicalIF":1.3,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551035/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148914521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biodiversity Data JournalPub Date : 2026-08-31eCollection Date: 2026-01-01DOI: 10.3897/BDJ.14.e194006
Shimpei F Hiruta, Iraru Kobayashi, Toshihiko Fujita
{"title":"Phylogenetic position of the enigmatic starfish family Podosphaerasteridae (Asteroidea, Valvatida) with a morphological observation of the skeletal structure by micro-CT.","authors":"Shimpei F Hiruta, Iraru Kobayashi, Toshihiko Fujita","doi":"10.3897/BDJ.14.e194006","DOIUrl":"10.3897/BDJ.14.e194006","url":null,"abstract":"<p><p>Background The genus <i>Podosphaeraster</i> comprises seven species, characterised by a distinctive spherical body, all currently known from the seabed at depths below approximately 70 m. Its peculiar morphology has made its phylogenetic placement a subject of ongoing debate. It was initially suggested to be placed in Sphaerasteridae, the same family as fossil species. However, subsequent detailed skeletal analyses of the fossil forms suggested that this similarity was likely due to convergent evolution. Recent molecular analyses have revealed that Valvatida, in which the genus is currently placed, is likely a large polyphyletic group, leaving its taxonomic position still unresolved. New information A detailed examination of the internal skeletal structure of <i>Podosphaeraster toyoshiomaruae</i>, collected from the seas around Japan, was conducted using micro-focus X-ray computed tomography. Concurrently, shotgun sequencing was performed to identify key molecular markers for recent asteroid phylogeny. Additionally, shotgun sequencing determined the complete mitochondrial genome. Despite conservative evolution amongst asteroidean mitochondrial genomes, a translocation of the <i>COX2</i> gene was revealed, representing the first discovery of a major protein-coding gene translocation within Asteroidea. In the phylogenetic tree, <i>P. toyoshiomaruae</i> was positioned as the most basal lineage within Valvatida. However, the statistical support for this placement was low, potentially due to the long-branch attraction caused by the excessively rapid evolutionary rate. Images reconstructed by micro-CT confirmed the presence of calcified reinforcement in the mesentery and showed its detailed structure for the first time. The mesentery skeleton was found to connect to the V-plate and five pairs of plates, including three kinds of marginal plates. This suggests that the marginal plates of this species may not be homologous with those of other asteroids. Although varying degrees of marginal plate reduction are shared with the order Velatida, we consider this to be a case of convergent evolution. Our phylogenetic analysis indicates a close relationship between <i>P. toyoshiomaruae</i> and Poraniidae (and other Valvatida), all of which possess marginal plates differentiated to varying extents, the homology of which remains uncertain.</p>","PeriodicalId":55994,"journal":{"name":"Biodiversity Data Journal","volume":"14 ","pages":"e194006"},"PeriodicalIF":1.3,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13551059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148914543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}