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Titolo:
PROFILE OF CORTISOL DURING THE ONTOGENY OF THE ASIAN SEA-BASS, LATES-CALCARIFER
Autore:
SAMPATHKUMAR R; BYERS RE; MUNRO AD; LAM TJ;
Indirizzi:
NATL UNIV SINGAPORE,DEPT ZOOL,LOWER KENT RIDGE RD SINGAPORE 0511 SINGAPORE NATL UNIV SINGAPORE,DEPT ZOOL SINGAPORE 0511 SINGAPORE
Titolo Testata:
Aquaculture
fascicolo: 3-4, volume: 132, anno: 1995,
pagine: 349 - 359
SICI:
0044-8486(1995)132:3-4<349:POCDTO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHOLE-BODY CONCENTRATIONS; THYROID-HORMONE LEVELS; OREOCHROMIS-MOSSAMBICUS; ONCORHYNCHUS-KISUTCH; CHUM SALMON; COHO SALMON; LARVAE; EGGS; THYROXINE; SURVIVAL;
Keywords:
CORTISOL; LATES CALCARIFER; EMBRYOLOGY; PITUITARY-INTERRENAL AXIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
R. Sampathkumar et al., "PROFILE OF CORTISOL DURING THE ONTOGENY OF THE ASIAN SEA-BASS, LATES-CALCARIFER", Aquaculture, 132(3-4), 1995, pp. 349-359

Abstract

Whole-body cortisol was measured by radioimmunoassay from spawning for various periods up to 188 h post-spawning in 5 different broods. Fertilized eggs contained varying levels of cortisol (0.62-2.25 ng/g wet weight; designated ''C-0'') that presumably originated from the mother. These levels declined as embryogenesis proceeded. The rate of decline (0.056 +/- 0.004 ng/g/h) was fairly constant and was independent of C-0. The decline continued up to about 4 h post-hatching (around 20 h post-spawning) when cortisol reached minimum levels. Soon after attaining the minimum, the levels started rising steadily to reach values ashigh as 6.10 ng/g by 180 h post-spawning. The rise is presumed to be a result of cortisol production by the larvae. The onset of this rise is much earlier than that reported in other species; it is also earlier than the first immunohistochemical evidence for the activity of the pituitary-interrenal axis, at around 40 h post-spawning.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 19:12:54