Allometric relations and consequences for feeding in small pelagic fish in the Bay of Biscay

Handle URI:
http://hdl.handle.net/10754/562419
Title:
Allometric relations and consequences for feeding in small pelagic fish in the Bay of Biscay
Authors:
Bachiller, Eneko; Irigoien, Xabier ( 0000-0002-5411-6741 )
Abstract:
The body size of fish is an important factor in determining their biology and ecology, as predators eat prey smaller than themselves. Predator mouth size restricts the availability of possible prey. In this paper we provide the allometric relationships of eight common, small pelagic fish species in the Bay of Biscay. In addition, we describe the predator-prey size ratios for different species, and we determine changes in their ratio-based trophic-niche breadth with increasing body size. Results suggest that gape size does not totally determine the predator-prey size ratio distribution, but predators use the entire available prey size range, including the smallest. As they grow they simply incorporate larger prey as their increased gape size permits. Accordingly, a large degree of overlap was found in the diet composition in terms of size and predator-prey ratios, even between fish of different sizes. Of the species studied, only horse mackerels seem to be clearly specialized in relatively large prey. © 2012 International Council for the Exploration of the Sea.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program; Plankton ecology Research Group
Publisher:
Oxford University Press (OUP)
Journal:
ICES Journal of Marine Science
Issue Date:
21-Nov-2012
DOI:
10.1093/icesjms/fss171
Type:
Article
ISSN:
10543139
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Marine Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorBachiller, Enekoen
dc.contributor.authorIrigoien, Xabieren
dc.date.accessioned2015-08-03T10:37:31Zen
dc.date.available2015-08-03T10:37:31Zen
dc.date.issued2012-11-21en
dc.identifier.issn10543139en
dc.identifier.doi10.1093/icesjms/fss171en
dc.identifier.urihttp://hdl.handle.net/10754/562419en
dc.description.abstractThe body size of fish is an important factor in determining their biology and ecology, as predators eat prey smaller than themselves. Predator mouth size restricts the availability of possible prey. In this paper we provide the allometric relationships of eight common, small pelagic fish species in the Bay of Biscay. In addition, we describe the predator-prey size ratios for different species, and we determine changes in their ratio-based trophic-niche breadth with increasing body size. Results suggest that gape size does not totally determine the predator-prey size ratio distribution, but predators use the entire available prey size range, including the smallest. As they grow they simply incorporate larger prey as their increased gape size permits. Accordingly, a large degree of overlap was found in the diet composition in terms of size and predator-prey ratios, even between fish of different sizes. Of the species studied, only horse mackerels seem to be clearly specialized in relatively large prey. © 2012 International Council for the Exploration of the Sea.en
dc.publisherOxford University Press (OUP)en
dc.subjectallometric relationshipsen
dc.subjectBay of Biscayen
dc.subjectpredator-prey size ratioen
dc.subjectsmall pelagic fishen
dc.subjectstomach weighten
dc.subjecttrophic-niche breadthen
dc.titleAllometric relations and consequences for feeding in small pelagic fish in the Bay of Biscayen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentMarine Science Programen
dc.contributor.departmentPlankton ecology Research Groupen
dc.identifier.journalICES Journal of Marine Scienceen
dc.contributor.institutionMarine Research Division, AZTI Foundation, Herrera Kaia Portualdea, z/g, 20110 Pasaia (Gipuzkoa), Spainen
kaust.authorIrigoien, Xabieren
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