Effects of confinement stress of variable duration on the growth and microincrement deposition in the otoliths of Oreochromis niloticus(Cichlidae)

The effects of chronic confinement stress (1, 5 and 10 days) and of periodic blood sampling on somatic growth and the structure and growth of otoliths was studied in Oreochromis niloticus. During the study, the plasma concentrations of cortisol were measured at various times during the application o...

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Bibliographic Details
Published in:Journal of fish biology 2004-11, Vol.65 (5), p.1253-1269
Main Authors: Massou, A. M., Le Bail, P.-Y., Panfili, J., Laë, R., Baroiller, J. F., Mikolasek, O., Fontenelle, G., Auperin, B.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Agricultural sciences
Biological and medical sciences
checks
Cichlidae
Fundamental and applied biological sciences. Psychology
Life Sciences
microstructures
Oreochromis niloticus
sagittae
stress
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Summary:The effects of chronic confinement stress (1, 5 and 10 days) and of periodic blood sampling on somatic growth and the structure and growth of otoliths was studied in Oreochromis niloticus. During the study, the plasma concentrations of cortisol were measured at various times during the application of stress: they were significantly higher in confined fish than in control fish (mean ± s.d. 3·40 ± 0·47 v. 1·26 ± 0·62 ng ml−1, P 
ISSN:0022-1112
1095-8649
DOI:10.1111/j.0022-1112.2004.00512.x