Invertebrate Biology最新文献_第6页

Reproductive biology of the bathyal asteroid Ctenodiscus crispatus in the northeastern Pacific 太平洋东北部深海小行星脆鳍Ctenodiscos的繁殖生物学

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-10-17 DOI: 10.1111/ivb.12384

Sinja Rist, Lauren N. Rice, Caitlin Q. Plowman, C. Tyler Fountain, Avery Calhoun, Christina Ellison, Craig M. Young

{"title":"Reproductive biology of the bathyal asteroid Ctenodiscus crispatus in the northeastern Pacific","authors":"Sinja Rist, Lauren N. Rice, Caitlin Q. Plowman, C. Tyler Fountain, Avery Calhoun, Christina Ellison, Craig M. Young","doi":"10.1111/ivb.12384","DOIUrl":"10.1111/ivb.12384","url":null,"abstract":"The mud star Ctenodiscus crispatus has a broad distribution from Arctic waters into the northern Atlantic and Pacific oceans. Populations in the Atlantic are well studied and show oocyte sizes indicative of continuous gametogenesis with aseasonal spawning. In contrast, knowledge on the reproductive biology of Pacific populations is lacking. Thus, this study aims to examine the reproduction of C. crispatus in the northeastern Pacific. We sampled a population from the Pacific Ocean off Oregon and confirmed the species identity through 16S and cytochrome oxidase subunit I (COI) genetic barcoding. The majority of adults were 22–27 mm in size. Oocytes were obtained from dissected gonads soaked in a 1-methyladenine solution and fertilized with spawned sperm. Other individuals were preserved whole in 10% buffered formalin, and oocytes were measured from preserved gonads. Strip-spawned oocytes had a mean diameter of ~485 μm, consistent with Atlantic populations. Sperm had a mean head diameter and flagellum length of 3.1 and 65.9 μm, respectively. The time between first and second cell divisions was ~2 h, but larval cultures failed, and very few embryos developed to blastulae. Both strip-spawned and preserved oocytes had a bimodal size-frequency distribution indicative of semicontinuous gametogenesis. Comparison among individuals showed evidence of asynchrony among the population. This asynchrony and bimodal oocyte distribution may be driven by regular pulses of food, as has been postulated for other populations of this species. The reproductive plasticity seen among populations of this species in different regions could explain how it successfully inhabits such a wide geographic range.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ivb.12384","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45403378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The relationship between size and metabolic rate of juvenile crown of thorns starfish 刺冠海星幼鱼体型与代谢率的关系

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-08-27 DOI: 10.1111/ivb.12382

Dione J. Deaker, Maria Byrne

{"title":"The relationship between size and metabolic rate of juvenile crown of thorns starfish","authors":"Dione J. Deaker, Maria Byrne","doi":"10.1111/ivb.12382","DOIUrl":"10.1111/ivb.12382","url":null,"abstract":"Despite the notoriety of the corallivorous crown of thorns starfish (COTS, Acanthaster sp.), with population outbreaks that decimate reefs throughout the Indo-Pacific, the physiology of the juvenile stage remains poorly understood. We determined the feeding rate and metabolic rate of juvenile COTS during their initial algae-eating stage. The metabolic rate of juveniles after their ontogenetic diet transition from a diet of coralline algae to coral was also investigated. We found that the weight-specific metabolic rate of both the herbivorous (mean = 0.052 mg O2 g−1 h−1) and corallivorous (mean = 0.034 mg O2 g−1 h−1) juveniles increased exponentially with juvenile size. Juveniles consumed ~4 mm2 of algae (Amphiroa sp.) in 1 day, and consumption rate also increased with juvenile size. Juveniles may impact the distribution of coralline algae for other herbivores on coral reefs and the settlement habitat for many invertebrate larvae. Increased metabolism of both herbivorous and corallivorous juveniles with size is indicative of their increasing ecological impact as they grow, highlighting the importance of understanding the juvenile physiology of influential species such as COTS.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ivb.12382","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44473114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Differences in the expression of soluble proteins in freshwater and brackish-water ecotypes of the snail Theodoxus fluviatilis 河蜗牛淡水和微咸水生态型可溶性蛋白质表达的差异

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-08-22 DOI: 10.1111/ivb.12381

Amanda Alice Wiesenthal, Christian Müller, Dirk Albrecht, Jan-Peter Hildebrandt

{"title":"Differences in the expression of soluble proteins in freshwater and brackish-water ecotypes of the snail Theodoxus fluviatilis","authors":"Amanda Alice Wiesenthal, Christian Müller, Dirk Albrecht, Jan-Peter Hildebrandt","doi":"10.1111/ivb.12381","DOIUrl":"10.1111/ivb.12381","url":null,"abstract":"The neritid snail Theodoxus fluviatilis has formed regional subgroups in northern Europe, where it appears in both freshwater (FW) and brackish water (BW) in coastal areas of the Baltic Sea. These ecotypes show clear differences in osmotolerance and in the modes of accumulating organic osmolytes under hyperosmotic stress. We reasoned that the expression patterns of soluble proteins in the two ecotypes may differ as well. BW snails have to deal with a higher salinity (up to 20‰) than FW snails (0.5‰) and also cope with frequent fluctuations in environmental salinity that occur after heavy rains or evaporation caused by extended periods of intense sunshine. Therefore, the protein expression patterns of specimens collected at five different FW and BW sites were analyzed using 2D SDS-PAGE, mass spectrometry, and sequence comparisons based on a transcriptome database for Theodoxus fluviatilis. We identified 89 differentially expressed proteins. The differences in the expression between FW and BW snails may be due to phenotypic plasticity, but may also be determined by local genetic adaptations. Among the differentially expressed proteins, 19 proteins seem to be of special interest as they may be involved in mediating the higher tolerance of BW animals towards environmental change compared with FW animals.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ivb.12381","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45614832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Annotated checklist and genetic data for parasitic helminths infecting New Zealand marine invertebrates 新西兰海洋无脊椎动物感染寄生蠕虫的注释清单和遗传数据

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-07-27 DOI: 10.1111/ivb.12380

Jerusha Bennett, Robert Poulin, Bronwen Presswell

{"title":"Annotated checklist and genetic data for parasitic helminths infecting New Zealand marine invertebrates","authors":"Jerusha Bennett, Robert Poulin, Bronwen Presswell","doi":"10.1111/ivb.12380","DOIUrl":"10.1111/ivb.12380","url":null,"abstract":"Parasitic helminths with complex life cycles require multiple hosts in a particular order to complete their life cycles. Although almost all helminths infect invertebrates at some point in their life cycle, we know very little about which species of invertebrates harbor parasites compared with what is known for vertebrates. In New Zealand, <1% of marine invertebrates that may be expected to host parasites have records of parasite infections. This is a strong indication that our knowledge of invertebrate parasites within marine ecosystems is highly limited. Here, we provide the first comprehensive parasite–host checklist including data from the literature and newly discovered infections of parasitic helminths infecting marine invertebrates in New Zealand. Including both pre-existing and newly found data from our survey, we present data on 73 parasite taxa (five acanthocephalans, 13 cestodes, nine nematodes, and 46 trematodes) infecting 62 marine invertebrate species in New Zealand. In addition, we compile existing and new genetic data for many of these parasites, as a useful tool for future studies of parasite biodiversity and phylogenetics.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ivb.12380","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48363426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

A new species of deep-sea torquaratorid enteropneust (Hemichordata): A sequential hermaphrodite with exceptionally wide lips 深海四栖enteropneest一新种(半纲资料):一种具有异常宽嘴唇的序代雌雄同体

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-07-05 DOI: 10.1111/ivb.12379

Nicholas D. Holland, Avery S. Hiley, Greg W. Rouse

{"title":"A new species of deep-sea torquaratorid enteropneust (Hemichordata): A sequential hermaphrodite with exceptionally wide lips","authors":"Nicholas D. Holland, Avery S. Hiley, Greg W. Rouse","doi":"10.1111/ivb.12379","DOIUrl":"10.1111/ivb.12379","url":null,"abstract":"Specimens of a new species of torquaratorid acorn worm (Hemichordata, Enteropneusta) were video recorded and subsequently collected at abyssal depths in the eastern North Pacific at sites ranging from Oregon to northern Mexico. These worms are described here as Yoda demiankoopi n. sp. by molecular and morphological methods. The new species differs from its only described congener, Yoda purpurata, in three ways. First, the lips are extremely wide and indented by a deep ciliary groove for ingesting substrate and conveying it to the mouth. Second, a connective tissue bulge of unknown significance runs mid-dorsally along the hepatic and posthepatic regions of the intestine. Third, the posthepatic intestine is strikingly sinuous and packed with gut contents presumably undergoing digestion for extended periods between infrequent defecations. Yoda demiankoopi n. sp. is hermaphroditic, a character so far known only for the genus Yoda in the entire class Enteropneusta. The gonads of each adult worm comprise hundreds of ovaries (each containing a single oocyte) and hundreds of testes located just beneath the dorsal epidermis of the anterior trunk and associated genital wings. In any given animal, at any given time, gametes of only one sex or the other become fully mature. Thus, the worm is a sequential hermaphrodite, alternately spawning purely as a female or purely as a male.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ivb.12379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49224413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Persistent companionships: The parasitic copepod community of the dolphinfish Coryphaena hippurus on the Ecuadorian coast 持久的伙伴关系:厄瓜多尔海岸上的海豚Coryphaena hippurus的寄生桡足类群落

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-06-10 DOI: 10.1111/ivb.12378

Ana María Santana-Piñeros, Geormery Mera-Loor, Eduardo Suárez-Morales, David González-Solis, Yanis Cruz-Quintana

{"title":"Persistent companionships: The parasitic copepod community of the dolphinfish Coryphaena hippurus on the Ecuadorian coast","authors":"Ana María Santana-Piñeros, Geormery Mera-Loor, Eduardo Suárez-Morales, David González-Solis, Yanis Cruz-Quintana","doi":"10.1111/ivb.12378","DOIUrl":"10.1111/ivb.12378","url":null,"abstract":"The common dolphinfish, Coryphaena hippurus, is an important and widespread fishing resource in tropical and subtropical latitudes. It harbors a diverse array of parasitic copepods, but data on their infection indices are quite limited worldwide. We analyzed its parasitic copepod community and infection indices based on the examination of 615 individuals of C. hippurus landed monthly on the coast of Ecuador, over a period of 1 year. Both the opercular cavities and gills of the sampled fish were examined for parasitic copepods, of which nine taxa were recorded: Brachiella quaternia, Caligus belones, C. bonito, C. coryphaenae, C. productus, Euryphorus brachypterus, E. nordmannii, Lepeophtheirus sp., and Lernaeenicus sp. The finding of five of these species (i.e., B. quaternia, C. belones, C. productus, E. brachypterus, and E. nordmannii) represents new geographic records. C. bonito showed the highest prevalence (83%), mean abundance (5.46 ± 4.99), and mean intensity (6.57 ± 4.99), followed by B. quaternia (prevalence = 32%, mean abundance = 1.89 ± 5.66, mean intensity = 5.89 ± 5.71). The infection indices of C. bonito decreased with increasing host length and were higher in females than in males. The parasitic copepod community of common dolphinfish in this study was similar to communities in other parts of its geographic distributional range, including the Atlantic Ocean, the Mediterranean Sea, and the Eastern Pacific, consistently dominated by a generalist parasitic species. This is the first and most detailed quantitative evaluation of the parasitic copepods associated with the dolphinfish and updates the extant parasitological data for this host.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46456859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meiofauna is an important, yet often overlooked, component of biodiversity in the ecosystem formed by Posidonia oceanica 在Posidonia oceanica形成的生态系统中，巨型动物是生物多样性的重要组成部分，但往往被忽视

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-06-06 DOI: 10.1111/ivb.12377

Guillermo García-Gómez, Álvaro García-Herrero, Nuria Sánchez, Fernando Pardos, Andrés Izquierdo-Muñoz, Diego Fontaneto, Alejandro Martínez

{"title":"Meiofauna is an important, yet often overlooked, component of biodiversity in the ecosystem formed by Posidonia oceanica","authors":"Guillermo García-Gómez, Álvaro García-Herrero, Nuria Sánchez, Fernando Pardos, Andrés Izquierdo-Muñoz, Diego Fontaneto, Alejandro Martínez","doi":"10.1111/ivb.12377","DOIUrl":"10.1111/ivb.12377","url":null,"abstract":"The ecosystem formed by the marine flowering plant Posidonia oceanica is a biodiversity reservoir and provides many ecosystem services in coastal Mediterranean regions. Marine meiofauna is also a major component of that biodiversity, and its study can be useful in addressing both theoretical and applied questions in ecology, evolution, and conservation. We review the meiofaunal diversity in the meadow ecosystem of P. oceanica by combining a literature review and a case study. First, we gathered records of 672 species from 71 published studies, as well as unpublished sources, highlighting 4 species exclusive to this ecosystem. Eighteen of those studies quantified the spatial and temporal changes in species composition, highlighting habitat-specific assemblages that fluctuate following the annual changes experienced by these meadows. Hydrodynamics, habitat complexity, and food availability, all three inherently linked to the seagrass phenology, are recognized in the literature as the main factors shaping the complex distribution patterns of meiofauna in the meadows. These drivers have been identified mainly in studies of Copepoda and Nematoda, and their effect may depend ultimately on species-specific preferences. Second, we tested the generality of these observations using marine mites as a model group, showing that similar ecological preferences might be found in other less abundant meiofaunal groups. Overall, our study highlights the high diversity of meiofauna in meadows of P. oceanica compared with algae and sessile macrofauna associated with this seagrass and shows the complexity of the interactions and habitat use by meiofauna associated with the seagrass.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ivb.12377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48566187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Geoglomeris subterranea (Diplopoda, Glomerida, Glomeridae), the first morphologically non-specialized semiaquatic glomerid millipede? 亚基地理龙（Diplopoda，Glomerida，Glomeriae），第一种形态上非特化的半水足类千足虫？

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-06-03 DOI: 10.1111/ivb.12376

Beáta Valkay Haľková, Karel Tajovský, Jozef Grego, Martina Žurovcová, Andrej Mock

{"title":"Geoglomeris subterranea (Diplopoda, Glomerida, Glomeridae), the first morphologically non-specialized semiaquatic glomerid millipede?","authors":"Beáta Valkay Haľková, Karel Tajovský, Jozef Grego, Martina Žurovcová, Andrej Mock","doi":"10.1111/ivb.12376","DOIUrl":"10.1111/ivb.12376","url":null,"abstract":"Geoglomeris subterranea Verhoeff 1908 is a small (2–3 mm), blind, and depigmented representative of the order Glomerida, with a predominantly Western European distribution. Towards Central Europe (the Czech Republic, Austria), the species is found only sporadically, and its occurrence is documented by a small number of individuals. Recently, we documented this species in three orographic units of Slovakia (Slovenské stredohorie mountain range, Slovak Karst, and Pieniny Mountains), always on limestone bedrock. These findings represent the easternmost documented occurrence of the species. Analysis of the mitochondrial COI gene confirmed the identity as the species G. subterranea from Western Europe. The circumstances of the findings in Slovakia were very surprising: At the first two localities, living individuals were repeatedly collected from the bottom of karst springs, together with stygobiont fauna. This expands our knowledge of semiaquatic millipedes and proves to be unique to the order Glomerida. In a subsequent study, we found a close association of this species with the rhizosphere within soil saturated by water at karst springs, in humid to wet habitats. Nonetheless, using detailed morphological study, no morphological adaptations to the aquatic environment were found.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42334995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oogenesis and embryogenesis in a cryptogenic species of calcareous sponge (Calcaronea, Heteropiidae) in the southwestern Atlantic 西南大西洋一种隐源钙质海绵的卵子发生和胚胎发生

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-05-23 DOI: 10.1111/ivb.12375

Emilio Lanna, Michelle Klautau

{"title":"Oogenesis and embryogenesis in a cryptogenic species of calcareous sponge (Calcaronea, Heteropiidae) in the southwestern Atlantic","authors":"Emilio Lanna, Michelle Klautau","doi":"10.1111/ivb.12375","DOIUrl":"10.1111/ivb.12375","url":null,"abstract":"Calcarea is a diverse group of sponges, in which individuals are generally small and found in cryptic habitats. These characteristics hamper the access to them and, consequently, the knowledge about several aspects of their biology, including reproduction. Little is known about many reproductive aspects of these sponges and broad generalizations are made upon few studied species. Therefore, investigations dealing with the oogenesis and embryogenesis of more species are still necessary. Sycettusa hastifera is an alien species in the southwestern Atlantic. Knowledge about its reproduction would not only help to improve our comprehension of reproduction in Calcaronea but would also help to understand the capacity of this exotic species to colonize. Histological and electron microscopy analyses of individuals sampled at Arraial do Cabo (Rio de Janeiro, Brazil) showed that oogenesis in S. hastifera was long (4–6 months) and nutrients were acquired by association with nurse cells and endocytosis of bacteria, yielding heterogeneous and complex yolk inclusions. Cleavage, inversion, and amphiblastula larvae were similar to what has been observed in other calcaroneans, except for the larval cavity lacking amoeboid cells and the relatively long swimming period of the amphiblastula (on average 12 h, but reaching 72 h). Our results indicate that the vitellogenic mechanism characterized as mixed (an ancestral characteristic of Calcaronea) is strongly influenced by autosynthesis; during cleavage, cell fates could be determined from embryo to larva; and inversion of the embryo (which will become the amphiblastula larva) directly into the choanocyte chamber is an ancestral characteristic of Calcaronea. Despite the absence of amoeboid cells or other structures to nourish the larva, the long swimming period suggests that vitellogenesis is sufficient for the maintenance of the embryo and larva until metamorphosis. This characteristic may facilitate the spread of this cryptogenic species to new regions.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44715930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Evidence for spatial niche partitioning in the ectocommensal Symbion americanus (Cycliophora) on its lobster host, Homarus americanus (Arthropoda, Malacostraca) 外共生美洲共生体(cycloophora)与寄主美洲小龙虾(Homarus americanus，节肢动物，malacostra)空间生态位划分的证据

IF 1.2 4区生物学

Invertebrate Biology Pub Date : 2022-05-11 DOI: 10.1111/ivb.12370

Shoyo Sato, Allison Law, Gonzalo Giribet

{"title":"Evidence for spatial niche partitioning in the ectocommensal Symbion americanus (Cycliophora) on its lobster host, Homarus americanus (Arthropoda, Malacostraca)","authors":"Shoyo Sato, Allison Law, Gonzalo Giribet","doi":"10.1111/ivb.12370","DOIUrl":"10.1111/ivb.12370","url":null,"abstract":"Symbion americanus is a microscopic marine invertebrate in the phylum Cycliophora that lives as an ectocommensal on the mouthparts of the American lobster, Homarus americanus. Previous phylogeographic work on S. americanus identified three lineages corresponding to one described and two potential new species, along with evidence of sympatry. But these studies did not explore whether individuals of S. americanus from different genetic lineages segregate onto different host mouthparts. The present study examines the population structure and microhabitat of 196 individuals of S. americanus from lobsters from five North American localities (from Newfoundland, Canada, to Boston, MA) collected between June and September 2019. Specimens were sequenced at two mitochondrial DNA (mtDNA) markers, a 487 bp fragment of cytochrome c oxidase subunit I (COI) and a 481 bp fragment of 16S rRNA. Phylogenetic analyses recover three distinct lineages of Symbion americanus, corroborating previous studies. Population genetic analyses of individuals belonging to the C and G lineages show clear population structure at the level of host mouthparts. Microhabitat data suggest the segregation of different genetic lineages in S. americanus onto different host mouthparts, perhaps indicating the role of spatial niche partitioning in the incipient speciation of S. americanus.","PeriodicalId":54923,"journal":{"name":"Invertebrate Biology","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44283295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0