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Titolo:
The stress response of the gilthead sea bream (Sparus aurata L.) to air exposure and confinement
Autore:
Arends, RJ; Mancera, JM; Munoz, JL; Bonga, SEW; Flik, G;
Indirizzi:
Univ Nijmegen, Dept Anim Physiol, NL-6525 ED Nijmegen, Netherlands Univ Nijmegen Nijmegen Netherlands NL-6525 ED 5 ED Nijmegen, Netherlands Univ Cadiz, Fac Ciencias Mar, Dept Biol Anim, Cadiz 11510, Spain Univ Cadiz Cadiz Spain 11510 ias Mar, Dept Biol Anim, Cadiz 11510, Spain CICEM El Toruno, Cadiz 11510, Spain CICEM El Toruno Cadiz Spain 11510CICEM El Toruno, Cadiz 11510, Spain
Titolo Testata:
JOURNAL OF ENDOCRINOLOGY
fascicolo: 1, volume: 163, anno: 1999,
pagine: 149 - 157
SICI:
0022-0795(199910)163:1<149:TSROTG>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
TILAPIA OREOCHROMIS-MOSSAMBICUS; MELANOCYTE-STIMULATING HORMONE; RAINBOW-TROUT; PHYSIOLOGICAL-RESPONSES; INTERMEDIATE PITUITARY; MARINE TELEOST; XENOPUS-LAEVIS; ALPHA-MSH; CORTISOL; ENDORPHIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Flik, G Univ Nijmegen, Dept Anim Physiol, Toernooiveld 1, NL-6525 ED Nijmegen, Netherlands Univ Nijmegen Toernooiveld 1 Nijmegen Netherlands NL-6525ED ands
Citazione:
R.J. Arends et al., "The stress response of the gilthead sea bream (Sparus aurata L.) to air exposure and confinement", J ENDOCR, 163(1), 1999, pp. 149-157

Abstract

We investigated short-term effects (up to 24 h) of air exposure and confinement, and long-term effects (up to 11 days) of confinement, to elucidate signalling pathways in the stress response of gilthead sea bream Sparus aurata L. Plasma glucose and lactate were taken as indicators of sympathetic activation, and alpha-melanocyte stimulating hormone (alpha-MSH), adrenocorticotrophic hormone (ACTH) and cortisol as indicators of activation of the brain-pituitary- interrenal (BPI) axis. Air exposure for 3 min resulted, within 30 min, in an increase in plasma concentrations of cortisol, alpha-MSH, glucose, lactate, osmolality and plasma Na, Cl and Mg. Plasma ACTH and beta-endorphin and plasma K, Ca and P did not change. We conclude that air exposure mainly activates the brain-sympathetic-chromaffin cell. (BSC) axis. Infish confined at a density of 70 kg/m(3) (compared with 4 kg/m3 in controls), cortisol, ACTH and alpha-MSH increased within 1 h, indicating activation of the BPI axis. Plasma glucose, Na, Cl and Mg increased with an 8 h delay compared with the response to air exposure. No changes in plasma lactate,osmolality, K, Ca and P were observed. Long-term confinement induced a biphasic cortisol response with peaks at 1 h and at 2 and 3 days. A gradual increase in plasma beta-endorphin concentrations peaked at 7 days; the concentration of alpha-MSH increased rapidly within 1 h and then declined to control values 4 days after the onset of confinement. No changes in ACTH were detected. Our data provide evidence that a stresser-specific activation of the BSC and BPI axes may occur in Sparus aurata.

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Documento generato il 28/11/20 alle ore 00:27:04