Marine Biodiversity最新文献

{"title":"Facultative association of Purpura panama with Bunodosoma goanense","authors":"Cecelia Menezes, Narsinh L. Thakur","doi":"10.1007/s12526-023-01394-5","DOIUrl":"https://doi.org/10.1007/s12526-023-01394-5","url":null,"abstract":"","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138686387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Zonation in littoral macrobenthic assemblages in the Çanakkale Strait (Dardanelles)","authors":"Zeynep Tekeli, Herdem Aslan","doi":"10.1007/s12526-023-01391-8","DOIUrl":"https://doi.org/10.1007/s12526-023-01391-8","url":null,"abstract":"<p>This study presents an assessment of the benthic community structure in the supra-, medio-, and upper infralittoral zones along the Çanakkale Strait, Turkey. Replicated samples were collected with cores and quadrats from 16 stations during the summer months of 2019. The average density of zoobenthos was estimated at 20,626 individuals m⁻² and average wet mass of phytobenthos was 652 g m⁻². In total, the community comprised 160 zoobenthic and 35 phytobenthic species. Nine species were new records for the Turkish Strait System, and five were non-native to the area. The study revealed that Oligochaeta (sp.) were the dominant zoobenthos taxa, followed by the amphipod species <i>Speziorchestia stephenseni</i> (Cecchini, 1928). Additionally, the red alga <i>Ceramium virgatum</i> Roth, 1797 was identified as the most abundant phytobenthic taxon. No statistically significant differences were found in the biomass of the phytobenthic and the abundances of the zoobenthic assemblages among the supra-, medio-, and infralittoral zones, only zoobenthos community have a weak but significant difference with soft and hard substrates. Furthermore, a statistically significant but weak relationship between zoo- and phytobenthic species is also reported. The study also examined correlations between abiotic properties on community structure. It was revealed that the sediment in the structure of medium gravel, fine gravel, and fine sand affected the structure of the benthic community in the three zones. Also, the distance of the sampling area to the zone boundaries affects the distribution of zoobenthic communities in the medio- and infralittoral zones. The findings of this study offer fundamental data for the development of ecosystem-based marine management plans and extensive monitoring programs for the coastlines of the Çanakkale Strait. This area serves as the biological corridor of the Marmara Sea, which was designated as a Special Environmental Protection Area (SEPA) in 2021, facing pressures from anthropogenic activities and climate change.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138686385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Hydroids (Cnidaria, Hydrozoa) from the Northern and North-eastern coast of Brazil: addressing knowledge gaps in neglected regions","authors":"Andreza Campos de Moura, Felipe Ferreira Campos, Umberto Diego Rodrigues de Oliveira, Antonio Carlos Marques, Carlos Daniel Pérez","doi":"10.1007/s12526-023-01388-3","DOIUrl":"https://doi.org/10.1007/s12526-023-01388-3","url":null,"abstract":"<p>Hydroids are benthic cnidarians that have adapted to diverse marine environments through a wide variety of reproductive strategies and high phenotypic plasticity. This study aims at enhancing our understanding of the benthic hydroid diversity in underexplored areas of Brazil by analyzing hundreds of previously unexamined specimens. The study encompasses material collected from stations spanning the continental shelf and slope, ranging from the intertidal zone to a depth of 3,800 m across nine states in the North and Northeast regions of Brazil. This study represents the most extensive survey of benthic hydrozoans ever conducted in Brazil in terms of the sampled area, number of specimens collected, and bathymetric range. A total of 59 hydroid species, belonging to 32 genera and 14 families, were identified. In the states with the highest number of stations, we observed a greater number of specimens collected and, consequently, a greater richness, highlighting the importance of faunal surveys in neglected areas. The number of records and species richness declined with increasing depth, with 0–50 m exhibiting the highest number of records and species richness. Biogenic substrates, particularly sponges, hosted numerous epizoic hydroids. The significance of conducting new faunal surveys in underexplored areas of the Brazilian coastline is emphasized to address the knowledge gap regarding benthic hydrozoans in a vast area of the western South Atlantic.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Diversity of heterotrophic picoeukaryotes in the ice of the Kandalaksha Gulf (White Sea, Russia) based on rRNA gene high-throughput sequencing","authors":"Bogdan A. Kiriukhin, Tatiana A. Belevich, Irina A. Milyutina, Maria D. Logacheva, Denis V. Tikhonenkov","doi":"10.1007/s12526-023-01390-9","DOIUrl":"https://doi.org/10.1007/s12526-023-01390-9","url":null,"abstract":"<p>Contemporary climate change in the Arctic is causing the reduction of the ice habitat. This process induces rearrangements in the community composition of ice-dwelling microbial eukaryotes, with heterotrophic picoeukaryotes being one of the least studied groups. Here, we report the results of a DNA metabarcoding investigation of heterotrophic picoeukaryote diversity in the ice of the Kandalaksha Gulf of the White Sea by Illumina high-throughput sequencing of the 18S rRNA V4 gene region. In total, 121 operational taxonomic units (OTUs) belonging to heterotrophic protists were revealed. The communities of heterotrophic picoeukaryotes in first-year ice were represented by seven eukaryotic domains (Stramenopiles, Alveolata, Rhizaria, Cryptista, Haptista, Apusozoa, Opisthokonta) and within 15 phyla. Rhizaria was the most dominant domain accounting for 48% of the total relative read abundance and included only Cercozoa. The taxonomic composition of heterotrophic picoeukaryotes was analyzed in detail with attention to rare and important microbial eukaryotes and unusual finds in sea ice habitats, such as the parasitic Perkinsea. Unknown Cercozoa clade was revealed. We have demonstrated that the White Sea heterotrophic picoeukaryote communities are diverse but insufficiently studied. Only 39% of OTUs were classified down to the order, family, or genus level, and only 11% of OTUs were classified to the genus level. This demonstrates that many unsequenced unicellular eukaryotes are found in sea ice and highlights some limitations of the V4 18S rRNA gene metabarcoding approach—the incompleteness of databases (lack of reference sequences) and shortness of the V4 region (inability to classify OTUs to species level).</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Deconvolving feeding niches and strategies of abyssal holothurians from their stable isotope, amino acid, and fatty acid composition","authors":"Tanja Stratmann, Peter van Breugel, Andrew K. Sweetman, Dick van Oevelen","doi":"10.1007/s12526-023-01389-2","DOIUrl":"https://doi.org/10.1007/s12526-023-01389-2","url":null,"abstract":"<p>Holothurians are the dominant megabenthic deposit feeders in the Peru Basin (SE Pacific) and feed to various degrees of selectivity on a heterogenous pool of sedimentary detritus, but drivers of feeding selectivity and diet preferences for most holothurian species are unknown. This study reconstructs the diets of 13 holothurian species of the orders Elasipodida, Holothuriida, and Synallactida. Bulk stable isotope analyses (δ¹³C, δ¹⁵N) of holothurian body wall and gut wall tissues, gut contents, and feces were combined with compound-specific stable isotope analyses of amino acids, phospholipid-derived fatty acids, and neutral-lipid-derived fatty acids in the body wall. We further assessed how holothurians in the Peru Basin partition their resources and calculated how much of the daily particulate organic carbon (POC) flux to the area is ingested by them using information about gut contents of nine species. To assess the dependence of holothurians on fresh phytodetritus, we performed in situ pulse-chase experiments using ¹³C- and ¹⁵N-enriched phytodetritus. By measuring the uptake of this phytodetritus in fatty acids and amino acids and by comparing it with the presence of these compounds in the sediment, we calculated net accumulation and net deficiency for specific fatty acids and amino acids and discussed how climate change might affect the dependence on specific compounds. A Sørensen–Dice coefficient-based cluster analysis using data from trophic levels, levels of heterotrophic re-synthesis of amino acids, feeding selectivity, and food sources/diet suggested two major trophic groups with two optional subgroups each. Species-specific traits of locomotion, tentacle morphology, and gut structure likely allow resource partitioning and differences in selectivity among the holothurians, of which a subpopulation of 65% of all specimens can ingest 4 to 27% of the daily POC flux to the Peru Basin. Holothurians are specifically dependent on the uptake of arachidonic acid from phytodetritus, while most essential amino acids are available in the Peru Basin in sufficient concentrations.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Deep-sea fauna at a former red-mud disposal site (Cassidaigne Canyon, NW Mediterranean)","authors":"Pierre Chevaldonné, Sammy De Grave, Joan Lluís Pretus, Enrique Macpherson, Jean Vacelet, Helmut Zibrowius, Adrien Goujard","doi":"10.1007/s12526-023-01386-5","DOIUrl":"https://doi.org/10.1007/s12526-023-01386-5","url":null,"abstract":"<p>After 50 years, the dumping of red mud at the head of Cassidaigne Canyon (Southern France) was stopped in 2015. The area was surveyed in 2021 with an ROV at depths of 440–630 m. Biological findings reported here (images, sampling) have been obtained during a single ROV transect in the heavily impacted zone. In spite of the industrial waste deposit, a diverse faunal assemblage has persisted at the canyon head. Bioconstruction comprising large deep-sea oyster shells, scleractinian corals and hexactinellid sponge skeletons provides elevate and complex substrates for other organisms. Among the more significant findings, three live specimens of <i>Neopycnodonte zibrowii</i> Gofas, C. Salas &amp; Taviani, 2009, previously only known as dead shells in that canyon, were documented and the rarely observed stenopodid shrimp <i>Odontozona edwardsi</i> (Bouvier, 1908) has been sampled (first record in the Mediterranean) and DNA barcoded.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"A new blue Astrangia coral (Scleractinia) from the Southwestern Atlantic","authors":"Saulo Serra, Elizabeth Gerardo Neves, Jessika Alves, Rodrigo Johnsson","doi":"10.1007/s12526-023-01377-6","DOIUrl":"https://doi.org/10.1007/s12526-023-01377-6","url":null,"abstract":"<p><i>Astrangia</i> Milne Edwards &amp; Haime, 1848 is a small, poorly known genus of Scleractinia, composed of 15 extant species with circumtropical to temperate distributions. Only two species of this genus have been distinguished in shallow-water environments along the Brazilian coast: <i>A. solitaria</i> (Le Sueur, 1817) and <i>A. rathbuni</i> Vaughan, 1906. Here, we describe a new, blue <i>Astrangia</i> species from the northeastern Brazilian coast. Scanning electron microscopy images of the corallites supported the taxonomic analysis and the description of the new species. Early confused with <i>Astrangia woodsi</i> Wells, 1955, an incrusting coral with blue-gray polyps, the new species is a zooxanthellate, solitary brooding coral and can easily be recognized in biofouling communities because of its solitary shape instead of the colonial development of <i>A. woodsi</i>. The new species was observed on artificial substrates, co-occurring with non-native invertebrates, such as the bryozoan <i>Triphyllozoon arcuatum</i> (MacGillivray, 1889), and “sun corals” of the genus <i>Tubastraea</i> Lesson 1830). This is the second <i>Astrangia</i> species reported from Brazil, updating the inventory for the entire South Atlantic to five recorded species. Its reproduction mode as a brooder was determined through histological examination, showing embryos in the mesenteries. A key to all extant <i>Astrangia</i> species is provided together with an infographic about its distribution and environmental preferences across the globe.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The use of hand-sanitiser gel facilitates combined morphological and genetic analysis of shelled pteropods","authors":"L. Q. Choo, G. Spagliardi, K. T. C. A. Peijnenburg","doi":"10.1007/s12526-023-01384-7","DOIUrl":"https://doi.org/10.1007/s12526-023-01384-7","url":null,"abstract":"<p>There is a lack of standardised imaging methods for marine zooplankton due to the difficulty of manipulating small and often fragile specimens. Yet, standardised 2D photographs and 3D scans provide important morphological information to accompany DNA-barcoded specimens for reference databases such as the Barcode of Life Data System (BOLD). Shelled pteropods are considered as bio-indicators to study impacts of ocean acidification, and thus, it is especially important to obtain high-quality records of their fragile aragonitic shells. We used alcohol-based hand sanitiser gel as a medium for photographing pteropods of the genus <i>Limacina</i> prior to micro-CT scanning and destructive DNA analysis. The high viscosity and transparency of the hand sanitiser enabled easy handling of the specimens so that they could be positioned in a standardised orientation and photographed with a stacking microscope. The high-quality photographs provide a record of morphology and allow for subsequent geometric morphometric analyses. This method did not impact the downstream micro-CT and molecular analyses of the same specimens and resulted in publicly available 2D and 3D digital vouchers as well as ten reference DNA barcodes (partial Cytochrome Oxidase I gene sequences). While alcohol-based hand sanitiser entered our daily lives due to a distressing pandemic, we could make use of it as a cheap and easily available resource to make high quality voucher photographs of shelled pteropods. Digital vouchers serve as a record of their morphology for further taxonomic analyses and facilitate studies assessing shell growth and impacts of ocean acidification.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Complementary broad-range mitochondrial markers improve eDNA characterization of marine metazoan diversity","authors":"Zhi Ting Yip, Z. B. Randolph Quek, Danwei Huang","doi":"10.1007/s12526-023-01385-6","DOIUrl":"https://doi.org/10.1007/s12526-023-01385-6","url":null,"abstract":"<p>Environmental DNA (eDNA) metabarcoding leverages genetic material present in the habitat for detection of species and has great potential for rapid biodiversity assessment. Comprehensive eDNA characterization of marine metazoan biodiversity requires broad amplification of genetic markers or complementary loci to detect a wide diversity of taxa. In this study, we tested the effectiveness of the universal cytochrome c oxidase subunit I (COI) and marine vertebrate 16S ribosomal RNA markers to recover coastal marine taxa from eDNA samples collected along the urban coast of Singapore. We recovered 260 molecular operational taxonomic units (MOTUs) from a total of 12 L of water (triplicates of 1 L at each of four sites) with no overlap of MOTUs observed between the two assays despite the expectation that the COI primer set could potentially amplify a broad range of metazoans. Notably, our COI assay identified mainly invertebrates, while the 16S assay primarily recovered vertebrates. For the relatively new 16S barcoding marker, we applied two species delimitation programs on a curated, comprehensive vertebrate dataset to determine the distance threshold between intra- and interspecific comparisons (2%). Community analyses revealed that metazoan communities were distinct between sites for both assays. In addition, DNA metabarcoding was shown to be helpful for the monitoring of non-indigenous and threatened marine species, such as <i>Mytella strigata</i> and <i>Aetobatus ocellatus</i>, respectively. Our findings highlight the potential of a complementary multi-marker approach for biomonitoring invertebrates and vertebrates comprehensively across distinct habitats.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Holopelagic Annelida from the Atlantic sector of the Southern Ocean and adjacent South Atlantic with descriptions of three new species","authors":"Glafira Kolbasova, Vitaly Syomin, Alexey Mishin, Tina Molodtsova, Nikolai Neretin, Tatiana Neretina","doi":"10.1007/s12526-023-01380-x","DOIUrl":"https://doi.org/10.1007/s12526-023-01380-x","url":null,"abstract":"<p>Pelagic polychaetes were collected in the Bransfield Strait, the Weddell Sea, and near the South Orkney Islands area in the austral summer of 2022 during the 87^th cruise of the R/V Akademik Mstislav Keldysh. The collected material was studied using morphological, taxonomic, and molecular methods; 18S and D1 regions of 28S genes were used as molecular markers. In total, 17 species were recognized in the studied material, including Alciopini (2), Lopadorrhynchidae (4), Iospilidae (1), Typhloscolecidae (6), and Tomopteridae (4). We clarified relationships between <i>Vanadis antarctica</i> McIntosh, 1885, and <i>V. longissima</i> (Levinsen, 1885). One new typhloscolecid <i>Typhloscolex keldyshi</i> sp. nov. and two new species of Lopadorrhynchidae <i>Pelagobia albertych</i> sp. nov. and <i>Pelagobia torquata</i> sp. nov. have been described. Also, we propose to restore <i>Pelagobia viguieri</i> Gravier, 1911, based on molecular data.</p>","PeriodicalId":18201,"journal":{"name":"Marine Biodiversity","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}