Further insights into the insulin-like growth factor-I system of bony fish pituitary with special emphasis on reproductive phases and social status

Shved Natallia, Baroiller Jean-François, Eppler Elisabeth. 2009. Further insights into the insulin-like growth factor-I system of bony fish pituitary with special emphasis on reproductive phases and social status. Annals of the New York Academy of Sciences, 1163 : 517-520. Conference of European Comparative Endocrinologists (CECE). 24, Gênes, Italie, 2 Septembre 2008/6 Septembre 2008.

Quartile : Q1, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Histoire et philosophie des sciences; Histoire, histoire de l'art, archéologie; Psychologie-éthologie-ergonomie

Résumé : Insulin-like growth factor (IGF)-I, which is crucially involved in fish growth, differentiation, and reproduction, occurs in tilapia pituitary. IGF-I peptide, which is probably produced in hypothalamic perikarya, is present in axons of the neurohypophysis, and IGF-I mRNA and peptide are present in the adenohypophysis in adrenocorticotrophic hormone cells,melanocyte-stimulating hormone cells, with interindividual differences in growth hormone cells, and, starting with puberty, in gonadotrophic hormone (GTH) cells. Subordinate males showed a high IGF-I but a lower ^-luteinizing hormone expression, while in dominant males the opposite was found. IGF-I from the GTH cells may act as auto/paracrine regulators of GTH cell proliferation and enhance GTH synthesis and release during puberty and reproduction, depending on the social status.

Mots-clés Agrovoc : poisson osseux, facteur de croissance igf, hypophyse, fsh, lh, développement biologique, somatotropine, reproduction sexuée, comportement

Classification Agris : M12 - Production de l'aquaculture
L52 - Physiologie animale - Croissance et développement
L53 - Physiologie animale - Reproduction

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Shved Natallia, Institute of Anatomy (CHE)
• Baroiller Jean-François, CIRAD-PERSYST-UPR Aquaculture (FRA) ORCID: 0000-0002-0992-1725
• Eppler Elisabeth, Institute of Anatomy (CHE)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/549807/)

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