Organisms Diversity & Evolution最新文献

{"title":"Genetic and morphological differentiation among populations of the narrowly endemic and karst forest-adapted Pilea pteridophylla (Urticaceae)","authors":"Karina Lagos-Báez, Yuyini Licona-Vera, Héctor Gómez-Domínguez, Juan Francisco Ornelas, Antonio Acini Vásquez-Aguilar, Leopoldo Hurtado-Reveles, Andrés Ernesto Ortiz-Rodriguez","doi":"10.1007/s13127-024-00638-x","DOIUrl":"https://doi.org/10.1007/s13127-024-00638-x","url":null,"abstract":"<p>In this study, the influence of geographic isolation on the levels of morphological and genetic differentiation among populations of the karst forest-adapted <i>Pilea pteridophylla</i> (Urticaceae) was evaluated. Based on our results, there is a strong morphological differentiation among the only two know populations of <i>Pilea pteridophylla</i>. Both populations can be clearly differentiated based on vegetative and reproductive characters, and the observed variation is geographically structured. Moreover, our genetic data from the chloroplast genome show strong levels of population differentiation and no shared haplotypes were observed between populations. Also, our estimation of divergence times supports a long-term isolation hypothesis between populations. Based on our results, dispersal seed limitation, long-term forest isolation and topographic heterogeneity (local adaptation) are related to high levels of endemism and species turnover in the mountain karst forests of Mexico.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"4 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140011033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated evidence sheds light on the taxonomy of the widespread Tantilla melanocephala species complex (Serpentes: Colubridae) and indicates the existence of a new species from southern South America","authors":"Weverton dos Santos Azevedo, Francisco Luís Franco, Lucas Menezes, Tobias Saraiva Kunz, Felipe Gobbi Grazziotin","doi":"10.1007/s13127-023-00636-5","DOIUrl":"https://doi.org/10.1007/s13127-023-00636-5","url":null,"abstract":"<p>The widespread <i>Tantilla melanocephala</i> is a South American snake, which has a convoluted taxonomic history and a poorly addressed systematics. The taxonomic identity and the phylogenetic affinities of their populations are unclear, suggesting the existence of a complex of undescribed species. Here, we preliminarily address the morphological diversity and genetic structure of the <i>T. melanocephala</i> complex through comparative morphological approaches and phylogenetic analyses using maximum likelihood. Our results confirm the presence of hidden diversity within the <i>T. melanocephala</i> complex and strongly indicate that the populations of <i>T. melanocephala</i> from southern South America represent a distinct lineage, which is morphologically diagnosable under a unique combination of character states. Therefore, we formally describe these populations as a new species and present a comparison among all other South American species of <i>Tantilla</i>. We also estimate the divergence times of the main clades within the complex through Bayesian analysis, suggesting a biogeographical scenario of lineage diversification. Finally, our study clarifies aspects of the intricate taxonomy of the <i>T. melanocephala</i> complex, providing a framework for future studies to avoid the description of synonyms.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"35 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139551601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Alcyonidium kuklinskii sp. nov., a new species of Antarctic ctenostome bryozoan with a key to all Antarctic species of the genus","authors":"Thomas Schwaha, Valentina Cometti, Ahmed J. Saadi, Matteo Cecchetto, Stefano Schiaparelli","doi":"10.1007/s13127-023-00631-w","DOIUrl":"https://doi.org/10.1007/s13127-023-00631-w","url":null,"abstract":"","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"45 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139499535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel integrative data for Indomalayan echiniscids (Heterotardigrada): new species and old problems","authors":"Piotr Gąsiorek, Łukasz Michalczyk","doi":"10.1007/s13127-023-00628-5","DOIUrl":"https://doi.org/10.1007/s13127-023-00628-5","url":null,"abstract":"<p>The Malay Archipelago comprises thousands of islands that house a variety of biomes, from tropical rainforests of Borneo, Sumatra and Celebes to the Lesser Sundas deciduous forests. In this paper, we present an extensive genetic and morphological dataset for the genus <i>Kristenseniscus</i>, demonstrating the presence of the <i>walteri</i> complex that contains several pseudocryptic species. One of them, <i>Kristenseniscus exanthema</i> sp. nov., is described from Ambon and Seram (the Moluccas). First genetic data are released for two potentially pantropical <i>Echiniscus</i> species: <i>E. africanus</i> Murray, 1907 and <i>E. pusae</i> Marcus, 1928. Furthermore, <i>Echiniscus minutus</i> sp. nov. (Sulawesi Tengah), exhibiting trunk spines and contrasting dorsal sculpturing that comprise both pores and epicuticular granules, is found to constitute a separate evolutionary lineage within the <i>Echiniscus spinulosus</i> morphogroup (epicuticular granules are typically absent in the <i>spinulosus</i> group). Based on the phylogenetic reconstructions involving <i>ca</i>. 80 spp. of echiniscids representing the <i>Echiniscus</i> evolutionary line, we hypothesise that the tropical and subtropical regions served as the main radiation zone for this heterotardigrade clade. Finally, <i>Pseudechiniscus</i> (<i>Meridioniscus</i>) <i>celebesiensis</i> sp. nov. (Sulawesi Tengah) is a characteristic species with an apomorphic lack of claw spurs and intricate dorsal cuticular sculpturing. Our findings suggest that the tropical areas of the globe harbour a phylogenetically important but yet mostly uncovered portion of Earth’s tardigrade diversity.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"255 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hardly Venus’s servant—morphological adaptations of Veneriserva to an endoparasitic lifestyle and its phylogenetic position within Dorvilleidae (Annelida)","authors":"Ekin Tilic, Greg W. Rouse","doi":"10.1007/s13127-023-00633-8","DOIUrl":"https://doi.org/10.1007/s13127-023-00633-8","url":null,"abstract":"<p>Endoparasitic annelids living inside another annelid host are known, particularly with regard to Oenonidae, but in general are poorly studied. The dorvilleid <i>Veneriserva pygoclava</i> is known from southern California, and its genus name (Latin = Venus’s servant) alludes to the close association with the host aphroditid scaleworm <i>Aphrodita longipalpa</i>. Little is known on fundamental questions on the biology of <i>Veneriserva pygoclava</i>. What is its mode of reproduction? How do they feed? How do they penetrate the host? We have studied multiple parasitized hosts and <i>V. pygoclava</i> specimens, using an integrative approach, combining µCT, histology, and electron microscopy. 3D reconstructions from µCT data of a parasitized <i>Aphrodita</i> show the exact position of the parasites in their natural condition within the host’s coelomic cavity. Ultrastructural investigations of the parasites revealed interesting adaptations to their lifestyle such as the complete reduction of their gut, despite the presence of a functional jaw apparatus and a modified epidermis enabling nutrient uptake from the host’s coelomic fluid. In addition to these, we also investigated spermatogenesis and oogenesis in <i>V. pygoclava</i>. Sperm morphology indicates an external fertilization of eggs within the coelomic cavity of the host. Mature male and female parasites living inside the same mature host and the presence of juvenile <i>V. pygoclava</i> within juveniles of <i>Aphrodita</i> suggest an obligate form of parasitism with a very early penetration of the hosts. In addition to our detailed morphological investigation, we conducted a phylogenetic analysis showing the position of <i>Veneriserva</i> within Dorvilleidae and its position was recovered nested among taxa of the <i>Iphitime</i>. Our phylogenetic analyses also show that the taxation <i>Ophryotrocha puerilis siberti</i> should be given full species rank and referred to as <i>Ophryotrocha siberti</i>. Finally, we publish here the full mitochondrial genome of <i>V. pygoclava</i> and discuss its novel gene order with reference to other annelids.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"9 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidence of cryptic speciation in the invasive hydroid Cordylophora caspia (Pallas, 1771) (Cnidaria, Hydrozoa) supported by new records","authors":"Rayan Silva de Paula, Amanda Ferreira e Cunha, Mariana de Paula Reis, Clara Carvalho e Souza, Renato Brito de Oliveira Júnior, Newton Pimentel Ulhôa Barbosa, Antonio Valadão Cardoso, Erika Cristina Jorge, Lucília Souza Miranda","doi":"10.1007/s13127-023-00632-9","DOIUrl":"https://doi.org/10.1007/s13127-023-00632-9","url":null,"abstract":"<p>The invasion of non-native species has been a chronic problem in reservoirs of hydroelectric plants. Among the species recorded in Brazil, the cnidarian <i>Cordylophora caspia</i> is often misidentified as macrophytes or completely overlooked, although reports state that the colonies obstruct structures and pipes in industrial plants, generating high maintenance costs. In addition to modifying the ecological balance of invaded ecosystems, studies indicated that <i>C. caspia</i> can influence the occurrence of other invasive species, such as <i>Limnoperna fortunei</i>. In this study, we reported two new records for <i>C. caspia</i> in Brazil, the first occurrence in Minas Gerais and Goiás. We described the colonies in detail and reviewed the known geographic distribution of the species in Brazilian waters. We provided the first Brazilian genetic sequences of the species, which were phylogenetically placed into a broad evolutionary inference using <i>C. caspia COI</i> sequences available from different regions of the world. Our results indicate that there is no clear pattern of ecophysiological specialization of main clades regarding salinity that would justify the validation of the nominal <i>C. lacustris</i> for freshwater specimens. High levels of genetic differentiation in the lineages support the existence of multiple cryptic species within the genus <i>Cordylophora</i>. Finally, our ancestral state reconstruction analysis suggested a presumed freshwater origin for <i>C. caspia</i> and independent shifts between fresh and brackish waters. Advances in the study of populations from different regions of the world will be important for further understanding species delimitation, possible routes of invasion, economic impacts, and ecological interactions, including with other invasive species.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"47 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139397065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intermediary floral traits between natural hybrid and its parents in the Xiquexique (Cactaceae)","authors":"Sinzinando Albuquerque-Lima, Paulo Milet-Pinheiro, Daniela M. A. F. Navarro, Nigel P. Taylor, Daniela C. Zappi, Isabel C. Machado","doi":"10.1007/s13127-023-00634-7","DOIUrl":"https://doi.org/10.1007/s13127-023-00634-7","url":null,"abstract":"<p>Hybrid systems represent ‘new ecological opportunities’, as the changes in their vegetative and reproductive traits may facilitate colonization of new niches. The Cactaceae species <i>Xiquexique gounellei</i> and <i>Xiquexique tuberculatus</i> present different habitat preferences in the Brazilian Caatinga, however, across their distributions, some populations occur sympatrically and some individuals showed vegetative characteristics intermediate between these two species, suggesting a hybrid zone. These individuals also clearly did not belong to either of the two species, leading us to suppose that they could be hybrids, named as <i>X.</i> × <i>heptagonus</i>. Taking into account this assumption, we used a series of protocols to compare the floral attributes and signals, and floral biology displayed by the putative hybrid with those of its parents. The results showed that the flowers of the hybrid are morphologically intermediate to those of their parents. The colour of the external elements of the perianth is transgressive, and the white colour of the internal perianth-segments is shared between the three taxa. Scent analyses showed that <i>X.</i> × <i>heptagonus</i> has a scent profile that is intermediate to those of its parents, with only a few compounds indicating a transgressive phenotype. Both taxa of <i>Xiquexique</i> received visits from nectarivorous bats (Glossophaginae and Lonchophyllinae) and from the hawkmoths <i>Agrius cingulata</i> and <i>Erinnyis ello</i>. Our results reinforce the existence of this hybrid in the genus <i>Xiquexique</i> being derived from the possible parent species present. We also revealed how the floral morphology and the visual and olfactory cues of <i>X.</i> × <i>heptagonus</i> were shaped by the hybridization.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"118 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139104861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alcyonidium kuklinskii sp. nov., a new species of Antarctic ctenostome bryozoan with a key to all Antarctic species of the genus","authors":"Thomas Schwaha, Valentina Cometti, Ahmed J. Saadi, Matteo Cecchetto, Stefano Schiaparelli","doi":"10.1007/s13127-023-00629-4","DOIUrl":"https://doi.org/10.1007/s13127-023-00629-4","url":null,"abstract":"<p>Recent surveys of Antarctic waters in the Terra Nova Bay (Ross Sea) revealed numerous bryozoan species including ctenostome bryozoans. Whereas cheilostome bryozoans are well-studied in these latitudes, ctenostomes remain highly neglected. Large ctenostomes are easily recognized by their lack of calcified skeletons, but this lack also renders them difficult and tedious to identify. As a result, histology and reconstructions of internal soft tissues are required to classify this group of bryozoans. Thanks to the availability of new specimens from Terra Nova Bay, a detailed analysis of growth form, gut morphology and tentacle number of two colonies, initially ascribed to the ctenostome bryozoan genus <i>Alcyonidum</i> Lamouroux, 1813, turned out to be a new species, <i>Alcyonidium kuklinskii</i> sp. nov., which we described in this study. These specimens were also barcoded (COI) and sequences compared to available ones. Together with the new species described here, a total of ten species of <i>Alcyonidium</i> is now known for the Southern Ocean, accounting for one eighth of the entire genus diversity. All Southern Ocean species appear to be endemic. In order to speed the identification of the Antarctic <i>Alcyonidium</i> species, we provide an identification key and a distribution map of all type species. In brief, colony morphology, zooidal size and, in particular tentacle number represent the most suitable characters for identifying species within this genus.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"337 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138553447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular phylogeny and comparative morphology reveal the species validity and systematic position of Lepidodesma (Bivalvia: Unionidae)","authors":"Ruiwen Wu, Lili Liu, Liping Zhang, Dandong Jin, Xiaoping Wu, Xiongjun Liu, Zhicai Xie, Zhengfei Li","doi":"10.1007/s13127-023-00627-6","DOIUrl":"https://doi.org/10.1007/s13127-023-00627-6","url":null,"abstract":"<p>Increasingly sophisticated molecular techniques and research tools have greatly advanced the understanding of species diversity and phylogenetic relationships in freshwater mussels. However, malacologists have been puzzled by the taxonomic position and species validity of certain species, particularly those described solely based on conchological characteristics. The genus <i>Lepidodesma</i> is one such group. Here, we integrate shell morphology, soft-body anatomy, and molecular phylogeny to delimit the species validity of <i>Lepidodesma aligera</i> (Heude in Conchyliologie Fluviatile de la Provoince de Nanking 3:17–24, 1877) and <i>Lepidodesma languilati</i> (Heude in Journal De Conchyliologie 22:112–118, 1874). Comparative morphology reveals that <i>L</i>. <i>aligera</i> can be distinguished from <i>L</i>. <i>languilati</i> by its higher post-dorsal wing covered with scattered nodules, as well as differences in the incurrent aperture, excurrent aperture, and gill. Additionally, the average genetic distance based on DNA barcodes (COI) between both species is 4.0%. Integrative taxonomy supports the distinct species of <i>L. aligera</i>, rather than synonymy for <i>L. languilati</i>. Mitochondrial phylogenomic analyses confirm four monophyletic groups (Ambleminae + (Gonideinae + (Unioninae + Parreysiinae))) within the family Unionidae. <i>L. aligera</i> and <i>L. languilati</i> have a well-supported sister-group relationship and form a basal clade splitting from the rest of Unioninae. Therefore, the genus <i>Lepidodesma</i> should be classified as Lepidodesmini in Unioninae. The molecular clock with fossil calibration indicates that <i>Lepidodesma</i> originated in the Early Cretaceous (~121.30 Mya, 95% HPD = 90.37–156.54 Mya) and diverged in the Middle Neogene (~12.94 Mya, 95% HPD = 6.72–22.13 Mya). This study firstly provides anatomical features and molecular data for <i>L. aligera</i> and demonstrates the species validity and the systematic position of <i>Lepidodesma</i> taxa, which enrich our understanding of this rare group and facilitate its management and conservation.</p>","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":"913 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138531111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new Loriciferan, Scaberiloricus samba gen. et sp. nov., links the Higgins larva and the aberrant Shira larva","authors":"Martin V. Sørensen, Maria Herranz, Ricardo C. Neves, Reinhardt M. Kristensen, André R. S. Garraffoni","doi":"10.1007/s13127-023-00626-7","DOIUrl":"https://doi.org/10.1007/s13127-023-00626-7","url":null,"abstract":"Abstract A new genus and species of Loricifera, Scaberiloricus samba gen. et sp. nov., is described from the continental shelf and slope off Rio de Janeiro, Brazil. Adult morphology remains unknown for the new entity, but information is available from three different Higgins larval instars. The Higgins larva of the new species is characterised by a bulbous head and a slender, elongate trunk, separated by a constriction behind the head. The cuticle of the thorax and the posterior part of the head is characterised by numerous longitudinal zigzag folds. The new species and genus shows greatest morphological resemblance with Wataloricus japonicus , and a phylogenetic analysis based on Higgins larval morphological characters suggests that Scaberiloricus gen. nov., Wataloricus , Tenuiloricus , and Patuloricus form a monophyletic group within Pliciloricidae. The analysis furthermore suggests that the Higgins larvae of Scaberiloricus gen. nov. and Wataloricus represent transitional, evolutionary stages towards the highly aberrant Shira larvae, found in species of Tenuiloricus and Patuloricus .","PeriodicalId":54666,"journal":{"name":"Organisms Diversity & Evolution","volume":" 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}