Systematics and Biodiversity最新文献

{"title":"Museum specimens reveal a rare new characid fish genus, helping to refine the interrelationships of the Probolodini (Characidae: Stethaprioninae)","authors":"Guilherme Frainer, F. R. Carvalho, V. A. Bertaco, L. Malabarba","doi":"10.1080/14772000.2021.1986167","DOIUrl":"https://doi.org/10.1080/14772000.2021.1986167","url":null,"abstract":"","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46301732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three new species of spiny mice, genus Neacomys Thomas, 1900 (Rodentia: Cricetidae), from Brazilian Amazonia","authors":"T. Semedo, M. N. D. Da Silva, A. P. Carmignotto, R. Rossi","doi":"10.1080/14772000.2021.1980449","DOIUrl":"https://doi.org/10.1080/14772000.2021.1980449","url":null,"abstract":"THIAGO BORGES FERNANDES SEMEDO , MARIA NAZARETH FERREIRA DA SILVA , ANA PAULA CARMIGNOTTO & ROGÉRIO VIEIRA ROSSI Instituto Nacional de Pesquisa do Pantanal (INPP), Museu Paraense Em ılio Goeldi (MPEG), Programa de Capacitaç~ao Institucional, Cuiab a, Brazil Coleç~ao de Mam ıferos, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil Laborat orio de Diversidade Animal, Departamento de Biologia, Universidade Federal de S~ao Carlos, Campus Sorocaba (UFScar), Sao Carlos, Brazil Programa de P os-Graduaç~ao em Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso (UFMT), Cuiaba, Brazil","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2021-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45447604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular phylogenetic and morphological evidence reveal a rare limacoid snail genus, Khmerquantula gen. nov. (Eupulmonata: Dyakiidae) from Cambodia","authors":"Arthit Pholyotha, C. Sutcharit, Parin Jirapatrasilp, P. Ngor, Y. Oba, S. Panha","doi":"10.1080/14772000.2021.1970045","DOIUrl":"https://doi.org/10.1080/14772000.2021.1970045","url":null,"abstract":"An enigmatic land snail species restricted to the karst ecosystem in southern Cambodia and formerly placed in the family Ariophantidae is now reclassified into the family Dyakiidae. Its current systematic position is based on morpho-anatomical characters combined with a molecular phylogeny based on two partial mitochondrial markers (COI and 16S rDNA) and a nuclear gene fragment (28S rDNA). Our results indicate that Khmerquantula gen. nov. is a member of the Dyakiidae with very strong support from both morphological and molecular phylogenetic analyses. The diagnostic characters of this new genus and new species, Khmerquantula leipo are a dextral shell with a well-polished surface, animal with only three dorsal lobes, and reproductive organ without penial verge and amatorial organ papilla. This finding adds a new taxon to current biodiversity and illustrates the growing knowledge of the endemic malacofauna in Cambodia. http://zoobank.org/urn:lsid:zoobank.org:pub:5E5201B1-5BE6-452F-8D1A-B292DBA4AC25 http://zoobank.org/urn:lsid:zoobank.org:act:0D0414A4-FDA5-4E59-BAFE-1E1B68F37E36 http://zoobank.org/urn:lsid:zoobank.org:act:E08633F4-F5E1-4D99-8C70-252DF349C39A","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"1049 - 1061"},"PeriodicalIF":1.9,"publicationDate":"2021-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44916187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the continuum of evolution: a putative new hybrid speciation event in Opuntia (Cactaceae) between a native and an introduced species in southern South America","authors":"M. Köhler, L. Oakley, F. Font, M. L. L. Peñas, L. Majure","doi":"10.1080/14772000.2021.1967510","DOIUrl":"https://doi.org/10.1080/14772000.2021.1967510","url":null,"abstract":"Hybridization plays a fundamental role in plant evolution and diversification, promoting gene flow, morphological novelties, and plant speciation. Here, we integrated fieldwork, collections-based research, morphological observations, molecular systematics, and cytogenetic data to investigate the identity of a previously unidentified taxon of Opuntia (the prickly pear cacti) observed in the north-east region of Argentina, southern South America. Our analyses revealed a cytonuclear phylogenetic discordance among nuclear and plastid genomes, as well as a polyploid nature of the studied taxon. Combining our molecular phylogenetic and cytogenetic analyses with morphological observations, we suggest that hybridization events between the native Opuntia rioplatensis and the North American introduced species, O. ficus-indica, likely produced the taxon here described as O. × cristalensis. Opuntia is the most widespread genus of Cactaceae, and many species have been introduced worldwide for an array of different purposes. Our report proposes the putative first hybridization event in Opuntia between a North American species with a southern South American lineage, which may shed light on more complex evolutionary scenarios, speciation within the group, and the impacts of species introduction.","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"1026 - 1039"},"PeriodicalIF":1.9,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44346584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic diversity and population structure of three Hydroides species (Sedentaria, Serpulidae) in the Persian Gulf and Gulf of Oman, with the possible indication of heteroplasmy","authors":"Samaneh Pazoki, H. Rahimian, Torsten H. Struck","doi":"10.1080/14772000.2021.1965668","DOIUrl":"https://doi.org/10.1080/14772000.2021.1965668","url":null,"abstract":"The Persian Gulf, an enclosed sea connected to the Gulf of Oman through the narrow Strait of Hormuz, is known as the world’s hottest sea. Owing to its harsh environmental conditions, genetic isolation has been proposed for the Gulf’s biota. During the present study, population genetic and phylogeographic analyses were carried out focusing on potential barriers to dispersal in some polychaete populations between the Persian Gulf and the Gulf of Oman. Ninety-three specimens from three defined spatial populations of three Hydroides species, H. bulbosa, H. elegans and H. operculata, were sequenced for regions of two nuclear ribosomal (18S and ITS2) and two mitochondrial (COI and Cyt-b) genes to compare the genetic structure among the sampled populations. Haplotype networks of the three species showed no significant genetic differentiation and were consistent with their geographic distribution patterns. Population genetic analyses such as pairwise FST, nucleotide diversity and neutrality tests revealed some levels of intraspecific genetic diversities, suggesting different demographic histories. The genetic diversity observed in the more conservative genes (18S, Cyt-b, COI) in populations of H. elegans and H. operculata could reflect a more diverse genetic structure along their entire distribution range unlike the endemic species, H. bulbosa that presented a unique haplotype for each of those genes. Using Extended Bayesian Skyline plot analyses, populations of H. bulbosa and H. operculata showed signs of recent demographic expansion within the post-glacial transgression time frame of the Persian Gulf, while populations of H. elegans remained relatively constant. Another finding of the present study is the possible indication of heteroplasmy in H. elegans where two distinct mitochondrial lineages with about 11% of genetic divergence seem to coexist in the same individuals. We discuss also the alternative explanation of NUMTs (nuclear mitochondrial DNA), but regard it as substantially less likely.","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"993 - 1011"},"PeriodicalIF":1.9,"publicationDate":"2021-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41645254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the spongillid Spongilla alba Carter, 1849 reveals a new group of brackish-water sponges","authors":"A. Sokolova, D. Palatov, Y. Masuda, V. Itskovich","doi":"10.1080/14772000.2021.1958948","DOIUrl":"https://doi.org/10.1080/14772000.2021.1958948","url":null,"abstract":"","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2021-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41766159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subspecies limits and hidden Wolbachia diversity in Actinote pellenea butterflies","authors":"K. L. Silva-Brandão, Mariana Cirino, L. Magaldi, P. E. Gueratto, R. G. Mattos, A. Freitas","doi":"10.1080/14772000.2021.1965669","DOIUrl":"https://doi.org/10.1080/14772000.2021.1965669","url":null,"abstract":"Actinote pellenea is the most widespread species within the genus Actinote (Lepidoptera: Nymphalidae: Heliconiinae: Acraeini). The species has several generations per year (multivoltine) and is also the most diversified, with 18 formally recognized subspecies, most of them morphologically distinct and geographically segregated. In the present study we investigated lineage limits of 12 subspecies of A. pellenea using sequences of one mitochondrial (COI) and one nuclear gene (EF-1 α) to test if nominal geographic lineages are recovered as genetically differentiated. We also surveyed for the presence of Wolbachia in all field-collected individuals of A. pellenea and characterized these bacteria using sequences of wsp and gatB. The analysis of the COI alignment failed to recover all subspecies as monophyletic and only the clade composed for A. pellenea diaguita from Tucumán, Argentina and A. pellenea pellenea from the coastal Atlantic Forest in the states of São Paulo and Bahia, Brazil, was differentiated as a separate lineage. We found a Wolbachia-infection frequency of 68%, in both males and females, and we propose that the presence of these endosymbionts may explain why the mitochondrial gene COI failed to delimit the subspecies of A. pellenea as monophyletic groups. We showed for the first time that these butterflies have an intermediate prevalence of Wolbachia infection. However, several aspects of this infection are still unknown and we concluded the present study with several open questions relative to the interaction between Wolbachia and A. pellenea butterflies.","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"1012 - 1025"},"PeriodicalIF":1.9,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41535766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species delimitation and phylogenetic analyses reveal cryptic diversity within Cerebratulus marginatus (Nemertea: Pilidiophora)","authors":"Aida Verdes, María Belén Arias, J. Junoy, Megan L. Schwartz, H. Kajihara","doi":"10.1080/14772000.2021.1950231","DOIUrl":"https://doi.org/10.1080/14772000.2021.1950231","url":null,"abstract":"The heteronemertean Cerebratulus marginatus Renier, 1804 is a well-known representative of the family Lineidae (Nemertea) inhabiting sandy or muddy sediments throughout the world. Due to its wide geographic distribution and the lack of distinctive external morphological features among different populations, the species has been considered cosmopolitan. Increasing evidence indicates that nemertean species, including Cerebratulus marginatus, described based on morphology are often not supported by genetic data and represent complexes of cryptic species, rather than cosmopolitan species. Here, we use species delimitation and phylogenetic analyses to evaluate the speciation patterns within the putative C. marginatus species complex. We examined 25 specimens morphologically ascribed to C. marginatus and closely related species using a multilocus dataset including two mitochondrial markers (16S rRNA, COI) and three nuclear markers (18S rRNA, 28S rRNA, H3). Our analyses identified at least four supported independent lineages among the populations analysed, indicating that samples identified as C. marginatus might represent indeed a complex of cryptic species. Therefore, our results do not support the cosmopolitanism of C. marginatus and provide additional evidence suggesting that species identifications in nemerteans should not be based exclusively on morphological or anatomical features which do not accurately reflect evolutionary patterns. Our study highlights the importance of including molecular data in addition to morphological information to accurately delimit species boundaries, thereby improving nemertean taxonomy by providing a more accurate picture of the true species diversity and geographic distribution of this typically neglected phylum.","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"895 - 905"},"PeriodicalIF":1.9,"publicationDate":"2021-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44741754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DNA barcode sheds light on species boundaries in the common morphologically variable rove beetle Quedius umbrinus-complex that puzzled taxonomists for more than a century (Coleoptera, Staphylinidae)","authors":"M. Salnitska, A. Solodovnikov","doi":"10.1080/14772000.2021.1943559","DOIUrl":"https://doi.org/10.1080/14772000.2021.1943559","url":null,"abstract":"In the course of a long taxonomic history, Quedius umbrinus Erichson, a common West Palaearctic rove beetle, was gradually split into a dozen species before all of them, except Q. sigwalti Coiffait from Crete, were lumped back into a single species again. All these shifts were based on the intuitive evaluation of morphological variation only. We sequenced the barcoding fragment of the CO1 gene across specimens of Q. umbrinus-complex broadly covering its geographic range and performed several DNA barcode species delimitation analyses on this dataset: tree-based Bayesian inference and Maximum likelihood, as well as tree-independent character-based (PTP, GMYC) and distance-based (ABGD). Molecular clades were largely congruent among all analyses and revealed four candidate species lineages. Of them, only Q. sigwalti is easy to distinguish by morphology alone. Morphological differences between other candidate species are present, but they are weak and do not hold for all specimens. To reflect new data in the classification we reinstated Q. pseudoumbrinus Lohse (stat. res.) as a species even though it is not always distinct from Q. umbrinus Er. (stat. rev.) morphologically. Also, we described a new species Q. volkeri (sp. nov.) from the north-western Caucasus. Finally, we placed Q. angaricus Coiffat in synonymy with Q. pseudoumbrinus Lohse (syn. nov.). http://www.zoobank.org/urn:lsid:zoobank.org:act:B6E2ED11-2029-48E7-975F-060D9DA61648","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"859 - 874"},"PeriodicalIF":1.9,"publicationDate":"2021-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42872409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expanding known global biodiversity of Yamaguticestus (Cestoda: Phyllobothriidea) parasitizing catsharks (Pentanchidae and Scyliorhinidae)","authors":"J. Caira, M. Pickering, K. Jensen","doi":"10.1080/14772000.2021.1946617","DOIUrl":"https://doi.org/10.1080/14772000.2021.1946617","url":null,"abstract":"This paper aimed to test the prediction that substantial undiscovered biodiversity in the tapeworm genus Yamaguticestus Caira, Bueno & Jensen, 2021 exists in the 16 of 18 genera of catsharks globally that have not yet been examined for tapeworms. A total of 200 catsharks of 10 species representing eight genera were sampled opportunistically from the waters off Australia, Chile, Malaysian Borneo, South Africa, South Korea, and the UK between 1991 and 2017. Six species in four genera (i.e., Apristurus Garman, Asymbolus Whitley, Holohalaelurus Fowler, and Scyliorhinus Blainville) were found to host a total of six new species of Yamaguticestus, tripling the number of described species. The new species are Yamaguticestus africanae sp. nov. from Scyliorhinus capensis, Yamaguticestus ellisi sp. nov. from Scyliorhinus canicula, Scyliorhinus fairweatherae sp. nov. from Holohalaelurus regani, Yamaguticestus kihongkimi sp. nov. from Scyliorhinus torazame, and Yamaguticestus kuchtai sp. nov. from Apristurus aphyodes. The new species were characterized using a combination of light and scanning electron microscopy; sequence data for the D1–D3 region of the 28S rRNA gene were generated for five of the species. Transfer of a species formerly assigned to Calyptrobothrium Monticelli, 1893 that is morphologically consistent with Yamaguticestus added Cephaloscyllium Gill to the list of catshark genera known to host this genus. Most tapeworm species exhibited a remarkably low prevalence and intensity of infection suggesting that our failure to detect infection in the four genera of sharks represented by small sample sizes may not be indicative of their unsuitability as hosts. Our results suggest that the earlier prediction that 70 species of Yamaguticestus remain to be discovered in catsharks across the planet may actually be an underestimate. http://zoobank.org/urn:lsid:zoobank.org:pub:63F48CF6-ED06-44FC-839D-","PeriodicalId":54437,"journal":{"name":"Systematics and Biodiversity","volume":"19 1","pages":"875 - 894"},"PeriodicalIF":1.9,"publicationDate":"2021-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43041489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}