Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms

13 pages, 5 figures, 1 table.-- Dataset: https://doi.org/10.20350/digitalCSIC/13882

Detalles Bibliográficos
Autores: Olivares, Manuel, Calbet, Albert, Saiz, Enric
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/217471
Acceso en línea:http://hdl.handle.net/10261/217471
Access Level:acceso abierto
Palabra clave:Diel rhythms
Functional traits
Marinecopepods
Nauplii
Predator exudates
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spelling Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms Olivares, Manuel Calbet, Albert Saiz, Enric Diel rhythms Functional traits Marinecopepods Nauplii Predator exudates 13 pages, 5 figures, 1 table.-- Dataset: https://doi.org/10.20350/digitalCSIC/13882 Marine planktonic copepods frequently exhibit diel feeding cycles coupled with vertical migrations. However, copepod feeding rhythms can be influenced by factors others than different food availability between layers. In this study, we determined the changes in the diel feeding behaviour of two marine copepod species (Centropages typicus and Paracartia grani) through multigenerational laboratory rearing, ontogeny, and upon the exposure to predator chemical cues. The wild females of both C. typicus and P. grani showed marked feeding rhythms with higher ingestion rates at night. The diel rhythms of C. typicus were maintained in the first laboratory-reared generation (F1), suggesting maternal effects, but disappeared in the following generations. The P. grani females of a long-term culture (> 10 years) also showed no differences in their day–night feeding activity. Ontogenetic variations were detected in the F1 generation of C. typicus: feeding rhythms were absent in naupliar stages, but adults fed more intensely at night. In the case of the cultured P. grani, in general none of the stages showed feeding rhythms. Laboratory-reared C. typicus (8–11 generations) did not recover back the natural cyclic feeding when exposed to jellyfish and fish exudates, indicating that either predation risk does not significantly affect their diel feeding activity or predator-induced responses in marine copepods might not involve chemical signalling. Our study confirms that feeding-related functional traits of marine copepods can experience quick multigenerational changes in the laboratory; consequently, cultured copepods might not be good models for studies involving their diel feeding behaviour This study was framed within the Project FERMI (CGL2014-59227-R, MINECO/AEI/FEDER, UE), and is a contribution of the Marine Zooplankton Ecology Group (2017 SGR 87). Manuel Olivares is supported financially by a FPU Grant (FPU15/01747) from the Spanish Ministry of Education, Culture and Sport With the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI) Springer Nature http://hdl.handle.net/10261/217471
title Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
spellingShingle Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
Olivares, Manuel
Diel rhythms
Functional traits
Marinecopepods
Nauplii
Predator exudates
title_short Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
title_full Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
title_fullStr Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
title_full_unstemmed Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
title_sort Effects of multigenerational rearing, ontogeny and predation threat on copepod feeding rhythms
author Olivares, Manuel
author_facet Olivares, Manuel
Calbet, Albert
Saiz, Enric
author_role author
author2 Calbet, Albert
Saiz, Enric
author2_role author
author
topic Diel rhythms
Functional traits
Marinecopepods
Nauplii
Predator exudates
topic_facet Diel rhythms
Functional traits
Marinecopepods
Nauplii
Predator exudates
description 13 pages, 5 figures, 1 table.-- Dataset: https://doi.org/10.20350/digitalCSIC/13882
publishDate 2020
format article
status_str acceptedVersion
url http://hdl.handle.net/10261/217471
eu_rights_str_mv openAccess
publisher Springer Nature
institution Consejo Superior de Investigaciones Científicas (CSIC)
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
_version_ 1878439387450048512
publishDateSort 2020
author_browse Calbet, Albert
Olivares, Manuel
Saiz, Enric
publisherStr Springer Nature
score 6,9303427

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