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Titolo:
Analysis of stable isotope ratios to investigate stock structure of red emperor and Rankin cod in northern Western Australia
Autore:
Stephenson, PC; Edmonds, JS; Moran, MJ; Caputi, N;
Indirizzi:
Western Australian Marine Res Labs, N Beach, WA, Australia Western Australian Marine Res Labs N Beach WA Australia h, WA, Australia
Titolo Testata:
JOURNAL OF FISH BIOLOGY
fascicolo: 1, volume: 58, anno: 2001,
pagine: 126 - 144
SICI:
0022-1112(200101)58:1<126:AOSIRT>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
OTOLITH CARBONATE; SARDINOPS-SAGAX; FISH;
Keywords:
stable isotopes; Lutjanus sebae; Epinephelis multinotatus; fish movement; Western Australia;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Stephenson, PC Western Australian Marine Res Labs, POB 20, N Beach, WA, Australia Western Australian Marine Res Labs POB 20 N Beach WA Australia
Citazione:
P.C. Stephenson et al., "Analysis of stable isotope ratios to investigate stock structure of red emperor and Rankin cod in northern Western Australia", J FISH BIOL, 58(1), 2001, pp. 126-144

Abstract

The ratios of stable isotopes O-18/O-12 and C-13/C-12, in sagittal otolithcarbonate from two tropical demersal teleosts, red emperor Lutjanus sebae and Rankin cod Epinephelis multinotatus, from several locations in northernWestern Australia. differed between sites. On a broad scale, fish from thefour locations, Shark Bay, Ningaloo, Pilbara, and Broome had stable isotope values that were sufficiently different to indicate separate stocks, and it is appropriate to manage these populations of the two species independently in these areas. On a smaller scale, there may be limited mixing of these species between the Pilbara trawl fishery and the trap and line fisheriesoperating out of Onslow and Broome. Values of stable oxygen isotopes were strongly related to sea surface temperature, although there were some sitesin shallow water where low values of stable oxygen isotopes indicated thatfish were living in warm water. The use of stable oxygen and carbon isotope values is a valuable, cost effective method of determining the degree of mixing of fish stocks.

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Documento generato il 20/09/20 alle ore 22:35:12