FN Archimer Export Format
PT J
TI Are hake otolith macrostructures randomly deposited? Insights from an unsupervised statistical and quantitative approach applied to Mediterranean hake otoliths
BT 
AF COURBIN, Nicolas
   FABLET, Ronan
   MELLON-DUVAL, Capucine
   DE PONTUAL, Helene
AS 1:1,2;2:2;3:2;4:2;
FF 1:;2:PDG-DOP-DCB-STH-LASAA;3:PDG-DOP-DCM-HMT-RHSETE;4:PDG-DOP-DCB-STH-LASAA;
C1 Univ Laval, Dept Biol, Quebec City, PQ G1K 7P4, Canada.
C2 UNIV LAVAL, CANADA
   IFREMER, FRANCE
SI BREST
   SETE
SE PDG-DOP-DCB-STH-LASAA
   PDG-DOP-DCM-HMT-RHSETE
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 1.934
TC 9
UR https://archimer.ifremer.fr/doc/2007/publication-2678.pdf
LA English
DT Article
CR MEDITS / FR
   MEDITS 2004
   MEDITS 2005
   MEDITS 2006
   MEDITS 2007
   MEDITS FR
   MEDITS FR
   MEDITS-FR2000
   MEDITS-FR2001
   MEDITS-FR2002
   MEDITS-FR2003
   MEDITS-FR97
   MEDITS-FR98
   MEDITS-FR99
   MERMED3
   MERMED4
   MERMED5
   MERVIV 1
   MERVIV 2
   MERVIV 3
BO L'Europe
DE ;quality control;otolith;Merluccius merluccius;growth;age estimation method;age
AB Individual fish age data are crucial to fish stock assessment, so their accuracy and precision are vital. The acquisition of age data most often relies on interpreting fish otoliths, a complex task in which expert subjectivity increases with the complexity of the structural patterns of the otoliths. The question arises for certain fish species (e.g. hake, Merluccius merluccius) whether the deposition of otolith macrostructures is meaningful for age estimation. A quantitative method based on the evaluation of otolith similarity in terms of structural patterns is presented to investigate this issue. It relies on the determination of a typology of otolith macrostructures from an unsupervised statistical analysis of the distributions of their characteristics. This typology provides a basis for analysing and comparing structural patterns of otoliths through evaluation of structural otolith similarities. Application to a set of Mediterranean hake otoliths discriminates three types of macrostructure, one likely associated with fish responses to environmental or endogenous factors, and the other two meaningful at a population or group level. Comparisons of structural patterns based on the proposed structural similarity measure over two successive years support the assumption that otolith patterns are stable over time, although male and female otoliths differ significantly in structural pattern. The results bring new evidence that hake otolith patterns are not random and may be relevant to age estimation. 
PY 2007
PD SEP
SO ICES Journal of Marine Science
SN 1054-3139
PU Oxford university press
VL 64
IS 6
UT 000250937800012
BP 1191
EP 1201
ID 2678
ER

EF