{"title":"Development and ontogenetic changes of feeding behaviour during juvenile early growth of Eupolymnia nesidensis (Annelida, Terebellidae)","authors":"Andrea Toso, A. Giangrande","doi":"10.1080/07924259.2022.2043466","DOIUrl":null,"url":null,"abstract":"ABSTRACT Reproduction of the terebellid Eupolymnia nesidensis was investigated in a population from the Ionian Sea (Mediterranean, South Italy). This species has a worldwide distribution and is very common on Mediterranean hard substrata covered by algae. Observations revealed a spawning period across springtime with lecithotrophic development occurring inside a jelly mass, with eggs measuring 210 μm in diameter. Juveniles leave the jelly mass after 12–13 days building a transitory tube and exhibiting a vagile benthic behaviour, incorporating food directly through the mouth opening. During the juvenile stage, at day ~100, an ontogenetic shift related to feeding behaviour was observed. Specifically, the vagile feeding behaviour was replaced by the adult feeding strategy with the use of the fully developed head tentacles.","PeriodicalId":14482,"journal":{"name":"Invertebrate Reproduction & Development","volume":"25 10","pages":"109 - 119"},"PeriodicalIF":0.7000,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Invertebrate Reproduction & Development","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/07924259.2022.2043466","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"REPRODUCTIVE BIOLOGY","Score":null,"Total":0}
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Abstract
ABSTRACT Reproduction of the terebellid Eupolymnia nesidensis was investigated in a population from the Ionian Sea (Mediterranean, South Italy). This species has a worldwide distribution and is very common on Mediterranean hard substrata covered by algae. Observations revealed a spawning period across springtime with lecithotrophic development occurring inside a jelly mass, with eggs measuring 210 μm in diameter. Juveniles leave the jelly mass after 12–13 days building a transitory tube and exhibiting a vagile benthic behaviour, incorporating food directly through the mouth opening. During the juvenile stage, at day ~100, an ontogenetic shift related to feeding behaviour was observed. Specifically, the vagile feeding behaviour was replaced by the adult feeding strategy with the use of the fully developed head tentacles.
期刊介绍：
Invertebrate Reproduction & Development ( IRD) presents original research on the reproductive and developmental biology of the Invertebrata, both embryonic and postembryonic. IRD welcomes papers reporting significant results obtained using new techniques. Encouraged topic areas include: aquaculture, physiology, biochemistry, functional morphology, phylogeny, behavioural and regulatory mechanisms, including genetic, endocrine and molecular studies. Papers containing qualitative descriptions of reproductive cycles and gametogenesis will not be considered. IRD is published in association with the International Society of Invertebrate Reproduction and Development.
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