FN Archimer Export Format
PT J
TI Partial migration and early size of southern hake Merluccius australis: a journey between estuarine and oceanic habitats off Northwest Patagonia
BT 
AF TOLEDO, Pamela
   DARNAUDE, Audrey M.
   NIKLITSCHEK, Edwin J.
   OJEDA, Vilma
   VOUE, Raphael
   LEIVA, Felix P.
   LABONNE, Maylis
   CANALES-AGUIRRE, Cristian B.
AS 1:1,2;2:3;3:1,4;4:5;5:3;6:6;7:3;8:1,7;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Univ Los Lagos, Ctr I Mar, Puerto Montt, Chile.
   Univ Los Lagos, Programa Doctorado Ciencias Menc Conservac & Mane, Puerto Montt, Chile.
   Univ Montpellier, MARBEC, CNRS, Ifremer,IRD, Montpellier, France.
   Univ Los Lagos, Programa Invest Pesquera, Univ Austral Chile, Puerto Montt, Chile.
   Inst Fomento Pesquero, Dept Evaluac Recursos, Valparaiso, Chile.
   Radboud Univ Nijmegen, Dept Anim Ecol & Physiol, Nijmegen, Netherlands.
   Nucl Milenio Salmonidos Invasores INVASAL, Concepcion, Chile.
C2 UNIV LOS LAGOS, CHILE
   UNIV LOS LAGOS, CHILE
   UNIV MONTPELLIER, FRANCE
   UNIV LOS LAGOS, CHILE
   INST FOMENTO PESQUERO, CHILE
   UNIV RADBOUD NIJMEGEN, NETHERLANDS
   INVASAL, CHILE
UM MARBEC
IN WOS Cotutelle UMR
   copubli-europe
   copubli-int-hors-europe
IF 3.188
TC 5
UR https://archimer.ifremer.fr/doc/00516/62718/67094.pdf
   https://archimer.ifremer.fr/doc/00516/62718/67095.pdf
LA English
DT Article
DE ;early size;Merluccius australis;nor-Patagonia;otoliths;partial migration
AB Partial migration is a key adaptive strategy, increasingly observed across multiple taxa. To investigate partial migration and life-cycle diversity of Merluccius australis in northwestern Patagonia, we analysed isotopic (delta C-13, delta O-18) and elemental (B-11, Na-23, Mg-24, Mn-55, Sr-86, Ba-138) compositions of otoliths from juveniles, sub-adults, and adults to identify nursery origins, habitats used, and migratory behaviours of multiple cohorts (1990-2005). Influence of early size upon migration was assessed by comparing back-calculated sizes at demersal recruitment between resident and migratory adults. Although partial migration occurred at both estuarine and oceanic nursery habitats, migratory behaviour was more frequent in fish of estuarine origin (59%) than in fish of oceanic origin (17%). Adults of estuarine origin dominated both estuarine (92%) and oceanic (77%) sampling areas. Although we found no significant differences in size at demersal recruitment between oceanic-resident and oceanic-migratory fish, a strong relationship between size at demersal recruitment and migratory behaviour appeared in fish of estuarine origin, whose probability of migration increased from 5% to 95% as demersal recruitment size increased from 18.8 to 23.6cm. Further research on M. australis life cycle is required to incorporate sub-population processes into the stock assessment and management models being used for this overexploited species. 
PY 2019
PD JUN
SO Ices Journal Of Marine Science
SN 1054-3139
PU Oxford Univ Press
VL 76
IS 4
UT 000484404900029
BP 1094
EP 1106
DI 10.1093/icesjms/fsy170
ID 62718
ER

EF