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Titolo:
AGE STRUCTURE OF FEMALE GIANT TIGER PRAWNS PENAEUS-MONODON AS INDICATED BY NEURONAL LIPOFUSCIN CONCENTRATION
Autore:
SHEEHY M; CAMERON E; MARSDEN G; MCGRATH J;
Indirizzi:
UNIV QUEENSLAND,DEPT ZOOL BRISBANE QLD 4072 AUSTRALIA DEPT PRIMARY IND,BRIBIE ISL AQUACULTURE RES CTR BRIBIE ISL QLD 4507 AUSTRALIA
Titolo Testata:
Marine ecology. Progress series
fascicolo: 1-3, volume: 117, anno: 1995,
pagine: 59 - 63
SICI:
0171-8630(1995)117:1-3<59:ASOFGT>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLUORESCENT MORPHOLOGICAL LIPOFUSCIN; FRESH-WATER CRAYFISH; CRUSTACEAN BRAIN; PARASTACIDAE; PIGMENT; DECAPODA; GROWTH;
Keywords:
PENAEUS MONODON; AGE STRUCTURE; LIPOFUSCIN; CLUSTER ANALYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
M. Sheehy et al., "AGE STRUCTURE OF FEMALE GIANT TIGER PRAWNS PENAEUS-MONODON AS INDICATED BY NEURONAL LIPOFUSCIN CONCENTRATION", Marine ecology. Progress series, 117(1-3), 1995, pp. 59-63

Abstract

Fluorescent lipofuscin granules were found in the brains of both wildand pond-reared, mature, female giant tiger prawns Penaeus monodon. Lipofuscin concentrations, measured via image analysis of fluorescence micrographs, were significantly higher in the brains of 15.3 mo old pondreared prawns than in those 8.0 mo old. Cluster analysis of lipofuscin concentrations and morphometric data, when calibrated using the known-age pond-reared prawns, suggested that individuals from a wide range of ages, corresponding to 3 semi-annual cohorts at roughly 12, 18 and 24 mo of age, were present in the sample of mature wild females fromthe Cairns region of northern Queensland, Australia, in September 1993. As expected from earlier studies and as indicated here by discriminant function analyses, these apparent cohorts were more readily differentiated using lipofuscin concentration than either carapace length orweight. Use of lipofuscin concentration as a proxy measure of age suggested that growth of sampled prawns was similar to that previously reported for the species obtained using conventional methods. Lipofuscinconcentrations were generally low and individual variation relativelyhigh in this species, as is apparently the case for other prawns. However, this study suggests that age pigment can be useful for population age structure assessment in penaeids. The mixture of ages present inthe wild female P. monodon population may indicate a potential sourceof variation in broodstock quality for future investigation.

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Documento generato il 04/12/20 alle ore 03:57:04