Changes of gonadosomatic index and plasma levels of cortisol in the male and female captive Caspian brown trout, Salmo Trutta Caspius (Kessler, 1877) during the reproductive cycle | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6554691

Reference Type

Journal Article

Title

Changes of gonadosomatic index and plasma levels of cortisol in the male and female captive Caspian brown trout, Salmo Trutta Caspius (Kessler, 1877) during the reproductive cycle

Author(s)

Jamalzadeh, HR; Akhundian, M; Kabir, M; Khara, H; Mirrasuli, E; Hajirezaee, S; Golpour, A

Year

2013

Is Peer Reviewed?

Yes

Journal

Journal of Applied Animal Research
ISSN: 0971-2119

Volume

Issue

Page Numbers

133-136

Language

English

DOI

10.1080/09712119.2012.738228

Web of Science Id

WOS:000319106600003

URL

http://://WOS:000319106600003
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Abstract

The changes of cortisol and gonadosomatic index (GSI) in male and female Caspian brown trout reared under confinement in the hatchery were determined by radioimmunoassay. When the GSI reached to its maxima (for males: 17.2 +/- 1.9 ng/mL; for females: 15.6 +/- 4.7 ng/mL), the concentration of cortisol showed a clear peak both in males (10.6 +/- 0.8%) and females (10.1 +/- 0.9%). This result suggests that the elevated plasma levels of cortisol may not just be due to stresses during the breeding season but also due to its physiological functions in the reproduction of Caspian brown trout.

Keywords

gonadosomatic index; cortisol; reproductive cycle; Caspian brown trout; annually spawning strain; rainbow-trout; seasonal-changes; 11-beta-hydroxysteroid dehydrogenase; endocrine profiles; sturgeon; testosterone; maturation; Agriculture