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dc.contributor.author
Schroeder, Rafael
dc.contributor.author
Schwarz, Richard
dc.contributor.author
Crespi Abril, Augusto Cesar
dc.contributor.author
Alvarez Perez, José Angel
dc.date.available
2018-04-23T15:49:25Z
dc.date.issued
2017-10
dc.identifier.citation
Schroeder, Rafael; Schwarz, Richard; Crespi Abril, Augusto Cesar; Alvarez Perez, José Angel; Analysis of shape variability and life history strategies of Illex argentinus in the northern extreme of species distribution as a tool to differentiate spawning groups; Taylor & Francis Ltd; Journal of Natural History; 51; 43-44; 10-2017; 1-21
dc.identifier.issn
0022-2933
dc.identifier.uri
http://hdl.handle.net/11336/43016
dc.description.abstract
This study aimed to differentiate local and migratory spawninggroups of the shortfin squid Illex argentinus caught in Brazilianwaters using geometric and traditional morphometric methodsand size-selective processes. The back-calculated length distributionsreconstructed from daily growth increments deposited in thegladius allowed the identification of size-selective processes thatmay be related to different life history strategies. Landmark analysison body shape (geometric morphometric) revealed thatspawning groups presented significant ontogenetic variations interms of body outline. In addition, traditional morphometric methods,based on multivariate analysis, associated juveniles of theexpected migratory group (large size) and differentiated themfrom the local group individuals (small size). The changes inform, probably linked to the environmental gradients experiencedby individuals throughout ontogeny, were interpreted as adaptationsto improve swimming capacity. Migrant individuals havebeing differentiated from the smaller sizes group by body characteristics(broad fins, elongated and thicker mantle), which mayincrease the ability to perform long migrations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cannibalism
dc.subject
Gladius
dc.subject
Growth Depensetaion
dc.subject
Morphometrics
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Analysis of shape variability and life history strategies of Illex argentinus in the northern extreme of species distribution as a tool to differentiate spawning groups
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-05T18:24:51Z
dc.journal.volume
51
dc.journal.number
43-44
dc.journal.pagination
1-21
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Schroeder, Rafael. Universidade do Vale do Itaja; Brasil
dc.description.fil
Fil: Schwarz, Richard. Evolutionary Ecology of Marine Fishes; Alemania
dc.description.fil
Fil: Crespi Abril, Augusto Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina
dc.description.fil
Fil: Alvarez Perez, José Angel. Universidade do Vale do Itaja; Brasil
dc.journal.title
Journal of Natural History
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/00222933.2017.1374484
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/00222933.2017.1374484
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