Description of the Morphology of Pilidium incurvatum from Vietnam with Discussion of the Origin of Pilidia of the recurvatum Group (Nemertea, Pilidiophora)
{"title":"Description of the Morphology of Pilidium incurvatum from Vietnam with Discussion of the Origin of Pilidia of the recurvatum Group (Nemertea, Pilidiophora)","authors":"A. V. Chernyshev","doi":"10.1134/s1063074023080011","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Pilidia from the <i>recurvatum</i> group are usually sock-like larvae and include the following types: <i>pilidium recurvatum, pilidium incurvatum</i>, and <i>pilidium prorecurvatum</i>. The origin of these pilidia remains debated.The external morphology, musculature, and the nervous system of <i>pilidium incurvatum</i> from Nha Trang Bay are described using light and confocal laser scanning microscopy. The morphologies of <i>p. recurvatum</i> and <i>p. incurvatum</i> are not significantly different. Unlike <i>pilidium prorecurvatum</i>, <i>p. incurvatum</i> has a telotroch, two ventral nerves, and a double ventral muscle strand; the nerve and the muscular rings are located close to the telotroch. The Dawydoff’s hypothesis about the origin of <i>pilidia</i> ex gr. <i>recurvatum</i> from a typical hat-like pilidium is supported.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":"332 1","pages":""},"PeriodicalIF":0.5000,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Marine Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1134/s1063074023080011","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Pilidia from the recurvatum group are usually sock-like larvae and include the following types: pilidium recurvatum, pilidium incurvatum, and pilidium prorecurvatum. The origin of these pilidia remains debated.The external morphology, musculature, and the nervous system of pilidium incurvatum from Nha Trang Bay are described using light and confocal laser scanning microscopy. The morphologies of p. recurvatum and p. incurvatum are not significantly different. Unlike pilidium prorecurvatum, p. incurvatum has a telotroch, two ventral nerves, and a double ventral muscle strand; the nerve and the muscular rings are located close to the telotroch. The Dawydoff’s hypothesis about the origin of pilidia ex gr. recurvatum from a typical hat-like pilidium is supported.
期刊介绍：
The Russian Journal of Marine Biology was founded in 1975 by Alexey V. Zhirmunsky, member of the Russian Academy of Sciences. The Russian Journal of Marine Biology covers a wide range of research and some applied aspects of marine biology as a synthetic science related to various fields of study on marine biota and environment. It presents fundamental research on biological processes at molecular, cellular, organismal, and populational levels in marine organisms. Consideration is given to marine objects as models in life sciences. The journal also publishes papers dedicated to events in Russian and international marine biological science and the history of biology.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
