Demographic Variation between Colour Patterns in a Temperate Protogynous Hermaphrodite, the Ballan Wrasse Labrus bergylta

Handle URI:
http://hdl.handle.net/10754/325322
Title:
Demographic Variation between Colour Patterns in a Temperate Protogynous Hermaphrodite, the Ballan Wrasse Labrus bergylta
Authors:
Villegas-Ríos, David; Alonso-Fernández, Alexandre; Fabeiro, Mariña; Bañón, Rafael; Saborido-Rey, Fran
Abstract:
Fish populations are often treated as homogeneous units in typical fishery management, thereby tacitly ignoring potential intraspecific variation which can lead to imprecise management rules. However, intraspecific variation in life-history traits is widespread and related to a variety of factors. We investigated the comparative age-based demography of the two main colour patterns of Labrus bergylta (plain and spotted, which coexist in sympatry), a commercially valuable resource in the NE Atlantic. Individuals were aged based on otolith readings after validating the annual periodicity of annuli deposition. The relationships between the otolith weight and fish age and between otolith length and fish length were strong but differed between colour patterns. The fit of the growth models to the age and length data resulted in divergent growth curves between colour morphotypes and between sexes. Males and spotted individuals attained larger mean asymptotic sizes (Linf) than females and plain individuals, respectively, but converged to them more slowly (smaller k). Estimates of mortality based on catch curves from two independent datasets provided a global total mortality (Z) of 0.35 yr-1, although Z was larger in plain and female individuals. Overall, the results of this research have direct implications for management of L. bergylta and, as a precautionary measure, we recommend considering both colour patterns as two different management units. 2013 Villegas-Ros et al.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Villegas-Ríos D, Alonso-Fernández A, Fabeiro M, Bañón R, Saborido-Rey F (2013) Demographic Variation between Colour Patterns in a Temperate Protogynous Hermaphrodite, the Ballan Wrasse Labrus bergylta. PLoS ONE 8: e71591. doi:10.1371/journal.pone.0071591.
Publisher:
Public Library of Science (PLoS)
Journal:
PLoS ONE
Issue Date:
23-Aug-2013
DOI:
10.1371/journal.pone.0071591
PubMed ID:
24058404
PubMed Central ID:
PMC3751953
Type:
Article
ISSN:
19326203
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorVillegas-Ríos, Daviden
dc.contributor.authorAlonso-Fernández, Alexandreen
dc.contributor.authorFabeiro, Mariñaen
dc.contributor.authorBañón, Rafaelen
dc.contributor.authorSaborido-Rey, Franen
dc.date.accessioned2014-08-27T09:46:53Zen
dc.date.available2014-08-27T09:46:53Zen
dc.date.issued2013-08-23en
dc.identifier.citationVillegas-Ríos D, Alonso-Fernández A, Fabeiro M, Bañón R, Saborido-Rey F (2013) Demographic Variation between Colour Patterns in a Temperate Protogynous Hermaphrodite, the Ballan Wrasse Labrus bergylta. PLoS ONE 8: e71591. doi:10.1371/journal.pone.0071591.en
dc.identifier.issn19326203en
dc.identifier.pmid24058404en
dc.identifier.doi10.1371/journal.pone.0071591en
dc.identifier.urihttp://hdl.handle.net/10754/325322en
dc.description.abstractFish populations are often treated as homogeneous units in typical fishery management, thereby tacitly ignoring potential intraspecific variation which can lead to imprecise management rules. However, intraspecific variation in life-history traits is widespread and related to a variety of factors. We investigated the comparative age-based demography of the two main colour patterns of Labrus bergylta (plain and spotted, which coexist in sympatry), a commercially valuable resource in the NE Atlantic. Individuals were aged based on otolith readings after validating the annual periodicity of annuli deposition. The relationships between the otolith weight and fish age and between otolith length and fish length were strong but differed between colour patterns. The fit of the growth models to the age and length data resulted in divergent growth curves between colour morphotypes and between sexes. Males and spotted individuals attained larger mean asymptotic sizes (Linf) than females and plain individuals, respectively, but converged to them more slowly (smaller k). Estimates of mortality based on catch curves from two independent datasets provided a global total mortality (Z) of 0.35 yr-1, although Z was larger in plain and female individuals. Overall, the results of this research have direct implications for management of L. bergylta and, as a precautionary measure, we recommend considering both colour patterns as two different management units. 2013 Villegas-Ros et al.en
dc.language.isoenen
dc.publisherPublic Library of Science (PLoS)en
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.rightsArchived with thanks to PLoS ONEen
dc.subjectagingen
dc.subjectcolor patternen
dc.subjectcontrolled studyen
dc.subjectfishen
dc.subjectgeographic distributionen
dc.subjectgrowth curveen
dc.subjecthermaphroditic speciesen
dc.subjectintraspecific variationen
dc.subjectLabrus bergyltaen
dc.subjectlongevityen
dc.subjectmortalityen
dc.subjectotolithen
dc.subjectperiodicityen
dc.subjectphysical parametersen
dc.subjectsex differenceen
dc.subjectspecies differenceen
dc.subjectBody Sizeen
dc.subjectColoren
dc.subjectEcosystemen
dc.subjectFisheriesen
dc.subjectOtolithic Membraneen
dc.subjectPerciformesen
dc.subjectSex Determination Processesen
dc.subjectTemperatureen
dc.titleDemographic Variation between Colour Patterns in a Temperate Protogynous Hermaphrodite, the Ballan Wrasse Labrus bergyltaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalPLoS ONEen
dc.identifier.pmcidPMC3751953en
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Ecology and Marine Resources, Institute of Marine Research (IIM-CSIC), Vigo, Pontevedra, Spainen
dc.contributor.institutionServizo de Planificacin, Direccin Xeral de Desenvolvemento Pesqueiro, Consellera do Mar e Medio Rural (Xunta de Galicia), Santiago de Compostela, A Corua, Spainen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorSaborido-Rey, Franen

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