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Titolo:
Studies on triploid oysters in Australia - XII. Gonad discolouration and meat condition of diploid and triploid Sydney rock oysters (Saccostrea commercialis) in five estuaries in New South Wales, Australia
Autore:
Hand, RE; Nell, JA;
Indirizzi:
NSW Fisheries, Port Stephens Res Ctr, Taylors Beach, NSW 2316, Australia NSW Fisheries Taylors Beach NSW Australia 2316 Beach, NSW 2316, Australia
Titolo Testata:
AQUACULTURE
fascicolo: 3-4, volume: 171, anno: 1999,
pagine: 181 - 194
SICI:
0044-8486(19990215)171:3-4<181:SOTOIA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRASSOSTREA-GIGAS; RAINBOW-TROUT; ROUGHLEY; IREDALE; PLOIDY; GROWTH; COLOR;
Keywords:
condition index; discolouration; oysters; triploid; gonad colour;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Nell, JA NSW2316,eries, Port Stephens Res Ctr, Taylors Beach Rd, Taylors Beach, NSW NSW Fisheries Taylors Beach Rd Taylors Beach NSW Australia 2316 W
Citazione:
R.E. Hand e J.A. Nell, "Studies on triploid oysters in Australia - XII. Gonad discolouration and meat condition of diploid and triploid Sydney rock oysters (Saccostrea commercialis) in five estuaries in New South Wales, Australia", AQUACULTURE, 171(3-4), 1999, pp. 181-194

Abstract

The relative performance, in terms of meat condition, of triploid comparedto diploid Sydney rock oysters varied among five widely distributed sites in New South Wales (NSW). Over the final year on leases, ploidy, month and the ploidy x month interaction had a significant effect on meat condition at all sites except for ploidy at the southern, Lake Pambula site. From March to December (autumn to the first month of summer), triploid condition indices were higher, or not significantly different from those of diploids at all sites. Condition indices of triploids were higher than those of diploids from May to November/December at four of the five sites. A higher condition index (CI) of triploids became apparent later in the sampling period forthe Lake Pambula site in comparison to the remaining four sites. Triploid Sydney rock oysters were susceptible to brown discolouration of the gonad surface. Discolouration occurred in localised areas of the gonad and was notcorrelated to CI except for triploids at Lake Pambula, As discolouration was less noticeable during cooler months of the year, thus, coinciding with the generally superior condition of triploids relative to diploids during winter and spring, triploids remain a viable winter crop for farmers throughout NSW. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 04:34:52