2024-03-28T18:39:44Zhttp://buleria.unileon.es/oai/requestoai:buleria.unileon.es:10612/108342020-12-10T08:56:16Zcom_10612_17col_10612_18
00925njm 22002777a 4500
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Fregeneda Grandes, Juan Miguel
author
Hernández Navarro, Salvador
author
Fernández-Coppel, Ignacio Alonso
author
Correa Guimaraes, Adriana
author
Ruíz Potosme, Norlan Miguel
author
Navas Gracia, Luis Manuel
author
Martín-Gil, Jesús
author
Martín-Gil, Francisco Javier
author
2019-05-24
Serum steroid profiles were investigated in order to evaluate the potential use of circulating sex
steroid levels as a tool for sex identification in brown trout. Changes in the serum concentrations of
testosterone (T), progesterone (P), 17-β-estradiol (E2), and cortisol (F) in wild and farmed mature
female and male brown trout, Salmo trutta L., were measured in each season (January, May, July,
and October) in six rivers and four hatcheries located in the north-west of Spain. Serum cortisol levels
in farmed brown trout were significantly higher and showed a seasonal pattern opposite to that
found in wild trout. Because levels of the hormones under study can be affected by disruptive factors
such as exposure to phytoestrogens (which alters the hypothalamic–pituitary–gonadal axis) and
infection with Saprolegnia (which alters the hypothalamic–pituitary–adrenal axis), both factors are
taken into account.
Journal of water and health, 2013, vol. 11, n. 4
10.2166/wh.2013.086
http://hdl.handle.net/10612/10834
Sanidad animal
Veterinaria
Seasonal and sex-related variations in serum steroid hormone levels in wild and farmed brown trout Salmo trutta L. in the north-west of Spain