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Endocrine profiles during silvering of the European eel (Anguilla anguilla L.) living in saltwater

In: Animal Biology
Authors:
Vincent van Ginneken Integrative Zoology, Institute Biology Leiden (IBL), van der Klaauw Laboratorium, P.O. Box 9511, 2300 RA Leiden, The Netherlands

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Caroline Durif Institute of Marine Research, 5392, Storebø/Centre for Ecological and Evolutionary Synthesis, University of Oslo, P.O. Box 1066, Blindern 0316 Oslo, Norway

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Sylvie Dufour Museum National Histoire Naturelle (MNHN), Paris, France

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Miskal Sbaihi Museum National Histoire Naturelle (MNHN), Paris, France

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Ron Boot Integrative Zoology, Institute Biology Leiden (IBL), van der Klaauw Laboratorium, P.O. Box 9511, 2300 RA Leiden, The Netherlands

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Kees Noorlander Integrative Zoology, Institute Biology Leiden (IBL), van der Klaauw Laboratorium, P.O. Box 9511, 2300 RA Leiden, The Netherlands

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Jorg Doornbos Integrative Zoology, Institute Biology Leiden (IBL), van der Klaauw Laboratorium, P.O. Box 9511, 2300 RA Leiden, The Netherlands

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Albertinka Murk Section Toxicology, Wageningen University, P.O. Box 8000, 6700 EA Wageningen, The Netherlands; Wageningen IMARES, Haringkade 1, 1976 CP Ijmuiden, The Netherlands

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Guido van den Thillart Integrative Zoology, Institute Biology Leiden (IBL), van der Klaauw Laboratorium, P.O. Box 9511, 2300 RA Leiden, The Netherlands

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Online Publication Date:
01 Jan 2007
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Abstract

The transformation of yellow eel into silver eel is called 'silvering', and takes place prior to migration. This is the first study to provide hormonal profiles of European eel (Anguilla anguilla L.) during silvering. This transformation occurs in association with hormonal surges of testosterone (T) and estradiol (E2) but not with thyroid hormones (TH) and growth hormone (GH) which have a maximum activity in spring and a minimum activity in summer and autumn. It is therefore suggested THs and GH are not important for eel gonadal development in the autumn. Based on PCA analysis with physiological, morphological and endocrinological parameters it is concluded that the transition is gradual and that eels go through several stages.

Title:
Endocrine profiles during silvering of the European eel (Anguilla anguilla L.) living in saltwater
Article Type:
Research Article
DOI:
https://doi.org/10.1163/157075607782232143
Language:
English
Pages:
453–465
Keywords:
GROWTH HORMONE; ESTRADIOL; SILVERING; EUROPEAN EEL; METAMORPHOSIS; ANGUILLA ANGUILLA L; THYROID HORMONE; CORTISOL; SEASONAL CHANGES; TESTOSTERONE
In:
Animal Biology
In:
Volume 57: Issue 4
Publisher:
Brill
E-ISSN:
1570-7563
Print ISSN:
1570-7555
Subjects:
Biology & Environmental Sciences, Biology

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