The filter-feeding bivalve Mytilus chilensis capture pelagic stages of Caligus rogercresseyi: A potential controller of the sea lice fish parasites

Overview
TitleThe filter-feeding bivalve Mytilus chilensis capture pelagic stages of Caligus rogercresseyi: A potential controller of the sea lice fish parasites
AuthorsMontory JA, Chaparro OR, Averbuj A, Salas-Yanquin LP, Büchner-Miranda JA, Gebauer P, Cumillaf JP, Cruces E
TypeJournal Article
Journal NameJournal of fish diseases
VolumeN/A
IssueN/A
Year2020
Page(s)N/A
CitationMontory JA, Chaparro OR, Averbuj A, Salas-Yanquin LP, Büchner-Miranda JA, Gebauer P, Cumillaf JP, Cruces E. The filter-feeding bivalve Mytilus chilensis capture pelagic stages of Caligus rogercresseyi: A potential controller of the sea lice fish parasites. Journal of fish diseases. 2020 Feb 14.

Abstract

The copepod Caligus rogercresseyi is an ectoparasite of several salmonid species. The pumping activity of filter-feeding molluscs could reduce the abundance of copepod dispersive larval stages in the water column. In this research, nauplius II and copepodid larvae of C. rogercresseyi were exposed to filtering mussels (Mytilus chilensis) of different sizes. These mussels were able to filter both larval stages, although they were more efficient in catching nauplius II. The fact that nauplius II were ingested more efficiently could be explained by their smaller size, lower swimming velocity (escape) and longer resting times between movements, when they were exposed to the influx of water around the inhalant area of the mussels. Larger mussels were more effective filtering C. rogercresseyi larvae due to their larger inhalant area and the related water influx. Additionally, the results suggest that larvae captured by the mussels can be incorporated into pseudofaeces or ingested and then released as part of the faeces. Thus, high concentrations of M. chilensis surrounding salmon farms may act as biological barriers, reducing the density of copepod dispersive larval stages and, thus, salmon infestations.

Properties
Additional details for this publication include:
Property NameValue
Journal CountryEngland
Publication TypeJournal Article
Language Abbreng
LanguageEnglish
Copyright© 2020 John Wiley & Sons Ltd.
Elocation10.1111/jfd.13141
DOI10.1111/jfd.13141
Journal AbbreviationJ. Fish Dis.
Publication Date2020 Feb 14
eISSN1365-2761
ISSN1365-2761
Publication ModelPrint-Electronic
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PMID: PMID:32057114