Use of morphological characteristics to define functional groups of predatory fishes in the Celtic Sea

Type Article
Date 2013-08
Language English
Author(s) Reecht Yves1, Rochet Marie-Joelle1, Trenkel VerenaORCID1, Jennings S.2, Pinnegar J. K.2
Affiliation(s) 1 : IFREMER, F-44311 Nantes 03, France.
2 : Lowestoft Fisheries Lab, Ctr Environm Fisheries & Aquaculture Sci, Lowestoft NR33 0HT, Suffolk, England.
Source Journal Of Fish Biology (0022-1112) (Wiley-blackwell), 2013-08 , Vol. 83 , N. 2 , P. 355-377
DOI 10.1111/jfb.12177
WOS© Times Cited 12
Note programme européen Eur-Oceans
Keyword(s) ecomorphology, functional traits, predation strategy, trophic functions
Abstract An ecomorphological method was developed, with a focus on predation functions, to define functional groups in the Celtic Sea fish community. Eleven functional traits, measured for 930 individuals from 33 species, led to 11 functional groups. Membership of functional groups was linked to body size and taxonomy. For seven species, there were ontogenetic changes in group membership. When diet composition, expressed as the proportions of different prey types recorded in stomachs, was compared among functional groups, morphology-based predictions accounted for 28-56% of the interindividual variance in prey type. This was larger than the 12-24% of variance that could be explained solely on the basis of body size. (C) 2013 The Fisheries Society of the British Isles
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