Ryutaro Goto, Taigi Sato, Hiroki Nakajima, Takahiro Sugiyama, Hiroshi Ishikawa
{"title":"一种罕见的寄生在蚓喙上的外共生双壳类动物Sagamiscintilla thalassemicola (Galeommatoidea: galeomatidae)中伴生寄主的纬度变化","authors":"Ryutaro Goto, Taigi Sato, Hiroki Nakajima, Takahiro Sugiyama, Hiroshi Ishikawa","doi":"10.1017/s0025315423000772","DOIUrl":null,"url":null,"abstract":"<jats:italic>Sagamiscintilla thalassemicola</jats:italic> (Bivalvia: Galeommatoidea: Galeommatidae) is a rare ectocommensal bivalve that lives on the proboscis of echiuran worms, <jats:italic>Anelassorhynchus</jats:italic> spp. (Annelida: Thalassematidae: Thalassematinae: Thalassematini), and has been known only from the temperate zones of Japan. In this study, we found <jats:italic>S. thalassemicola</jats:italic> on the proboscis of the large echiuran <jats:italic>Ochetostoma</jats:italic> sp. (Thalassematidae: Thalassematinae: Thalassematini) on intertidal flats of three islands of the Ryukyu Archipelago, southern Japan. These are the first records of <jats:italic>S. thalassemicola</jats:italic> on non-<jats:italic>Anelassorhynchus</jats:italic> hosts and also from the subtropical regions. Additionally, we also collected <jats:italic>S. thalassemicola</jats:italic> from an intertidal flat of Kushimoto, Wakayama, Kii Peninsula, Japan, which is an update of the easternmost record of this species. The genetic differences in the mitochondrial cytochrome <jats:italic>c</jats:italic> oxidase subunit I and nuclear internal transcribed spacer 2 genes among <jats:italic>S. thalassemicola</jats:italic>, including those with <jats:italic>Ochetostoma</jats:italic> sp. from the subtropical region and with <jats:italic>Anelassorhynchus</jats:italic> spp. from the temperate region, can be considered within the intraspecific variation. These suggest that <jats:italic>S. thalassemicola</jats:italic> uses different echiuran hosts in the temperate and subtropical regions, respectively.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":"21 2","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Latitudinal shift of the associated hosts in Sagamiscintilla thalassemicola (Galeommatoidea: Galeommatidae), a rare ectosymbiotic bivalve that lives on the proboscis of echiuran worms\",\"authors\":\"Ryutaro Goto, Taigi Sato, Hiroki Nakajima, Takahiro Sugiyama, Hiroshi Ishikawa\",\"doi\":\"10.1017/s0025315423000772\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<jats:italic>Sagamiscintilla thalassemicola</jats:italic> (Bivalvia: Galeommatoidea: Galeommatidae) is a rare ectocommensal bivalve that lives on the proboscis of echiuran worms, <jats:italic>Anelassorhynchus</jats:italic> spp. (Annelida: Thalassematidae: Thalassematinae: Thalassematini), and has been known only from the temperate zones of Japan. In this study, we found <jats:italic>S. thalassemicola</jats:italic> on the proboscis of the large echiuran <jats:italic>Ochetostoma</jats:italic> sp. (Thalassematidae: Thalassematinae: Thalassematini) on intertidal flats of three islands of the Ryukyu Archipelago, southern Japan. These are the first records of <jats:italic>S. thalassemicola</jats:italic> on non-<jats:italic>Anelassorhynchus</jats:italic> hosts and also from the subtropical regions. Additionally, we also collected <jats:italic>S. thalassemicola</jats:italic> from an intertidal flat of Kushimoto, Wakayama, Kii Peninsula, Japan, which is an update of the easternmost record of this species. The genetic differences in the mitochondrial cytochrome <jats:italic>c</jats:italic> oxidase subunit I and nuclear internal transcribed spacer 2 genes among <jats:italic>S. thalassemicola</jats:italic>, including those with <jats:italic>Ochetostoma</jats:italic> sp. from the subtropical region and with <jats:italic>Anelassorhynchus</jats:italic> spp. from the temperate region, can be considered within the intraspecific variation. These suggest that <jats:italic>S. thalassemicola</jats:italic> uses different echiuran hosts in the temperate and subtropical regions, respectively.\",\"PeriodicalId\":17477,\"journal\":{\"name\":\"Journal of the Marine Biological Association of the United Kingdom\",\"volume\":\"21 2\",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-12-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Marine Biological Association of the United Kingdom\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1017/s0025315423000772\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MARINE & FRESHWATER BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Marine Biological Association of the United Kingdom","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1017/s0025315423000772","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
Latitudinal shift of the associated hosts in Sagamiscintilla thalassemicola (Galeommatoidea: Galeommatidae), a rare ectosymbiotic bivalve that lives on the proboscis of echiuran worms
Sagamiscintilla thalassemicola (Bivalvia: Galeommatoidea: Galeommatidae) is a rare ectocommensal bivalve that lives on the proboscis of echiuran worms, Anelassorhynchus spp. (Annelida: Thalassematidae: Thalassematinae: Thalassematini), and has been known only from the temperate zones of Japan. In this study, we found S. thalassemicola on the proboscis of the large echiuran Ochetostoma sp. (Thalassematidae: Thalassematinae: Thalassematini) on intertidal flats of three islands of the Ryukyu Archipelago, southern Japan. These are the first records of S. thalassemicola on non-Anelassorhynchus hosts and also from the subtropical regions. Additionally, we also collected S. thalassemicola from an intertidal flat of Kushimoto, Wakayama, Kii Peninsula, Japan, which is an update of the easternmost record of this species. The genetic differences in the mitochondrial cytochrome c oxidase subunit I and nuclear internal transcribed spacer 2 genes among S. thalassemicola, including those with Ochetostoma sp. from the subtropical region and with Anelassorhynchus spp. from the temperate region, can be considered within the intraspecific variation. These suggest that S. thalassemicola uses different echiuran hosts in the temperate and subtropical regions, respectively.
期刊介绍:
JMBA is an international journal, publishing original research on all aspects of marine biology. It includes pioneering work taking place today on major issues concerning marine organisms and their environment. Subjects covered include: ecological surveys and population studies of marine communities; physiology and experimental biology; taxonomy, morphology and life history of marine animals and plants; and chemical and physical oceanographic work. Included with 2010 online subscriptions: Marine Biodiversity Records.