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Titolo:
USE OF LIPOFUSCIN FOR RESOLVING COHORTS OF WESTERN ROCK LOBSTER (PANULIRUS-CYGNUS)
Autore:
SHEEHY M; CAPUTI N; CHUBB C; BELCHIER M;
Indirizzi:
UNIV LEICESTER,DEPT BIOL,UNIV RD LEICESTER LE1 7RH LEICS ENGLAND UNIV QUEENSLAND,DEPT ZOOL ST LUCIA QLD 4072 AUSTRALIA FISHERIES DEPT WESTERN AUSTRALIA,WESTERN AUSTRALIAN MARINE RES LABS NBEACH WA 6020 AUSTRALIA UNIV LEICESTER,DEPT ZOOL LEICESTER LE1 7RH LEICS ENGLAND
Titolo Testata:
Canadian journal of fisheries and aquatic sciences
fascicolo: 4, volume: 55, anno: 1998,
pagine: 925 - 936
SICI:
0706-652X(1998)55:4<925:UOLFRC>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRESH-WATER CRAYFISH; MORPHOLOGICAL LIPOFUSCIN; AGE STRUCTURE; PIGMENT; GROWTH; GEORGE; SIZE; PARASTACIDAE; AUSTRALIA; DENSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
M. Sheehy et al., "USE OF LIPOFUSCIN FOR RESOLVING COHORTS OF WESTERN ROCK LOBSTER (PANULIRUS-CYGNUS)", Canadian journal of fisheries and aquatic sciences, 55(4), 1998, pp. 925-936

Abstract

We evaluated lipofuscin age pigment as an approach to age determination of western rock lobster (Panulirus cygnus). Lipofuscin was measuredusing fluorescence image analysis of olfactory lobe sections from 184juvenile lobsters from coastal nursery reefs at Seven Mile Beach, Western Australia. Modal analysis of a lipofuscin concentration-frequencyhistogram for this sample suggested the presence of additional age-classes, not apparent in conventional size-frequency distributions but expected to be present from earlier tag-recapture studies. Modal progression suggested a remarkably constant average lipofuscin accumulation rate of 0.31% by volume per year in the wild lobsters, which was supported by blind-trial measurements of lipofuscin in known-age laboratory-reared specimens. Lipofuscin-based age estimates, indicating that most juvenile lobsters are 3-5 years old immediately prior to recruitmentto the fishery at 76 mm carapace length, agree with the long-established relationship between puerulus settlement and lobster catch 3-4 years later. Results indicate that the lipofuscin ageing technique will permit independent assessment of current population parameter estimatesand be useful for determining sexual and regional differences in these for the western rock lobster.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 03:57:24