2024-03-29T10:16:50Zhttp://buleria.unileon.es/oai/requestoai:buleria.unileon.es:10612/108342020-12-10T08:56:16Zcom_10612_17col_10612_18
2019-05-24T10:04:06Z
urn:hdl:10612/10834
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
Fregeneda Grandes, Juan Miguel
Hernández Navarro, Salvador
Fernández-Coppel, Ignacio Alonso
Correa Guimaraes, Adriana
Ruíz Potosme, Norlan Miguel
Navas Gracia, Luis Manuel
Martín-Gil, Jesús
Martín-Gil, Francisco Javier
Sanidad Animal
Sanidad animal
Veterinaria
P. 720-728
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.
2019-05-24T10:04:06Z
2019-05-24T10:04:06Z
2019-05-24
info:eu-repo/semantics/article
Journal of water and health, 2013, vol. 11, n. 4
10.2166/wh.2013.086
http://hdl.handle.net/10612/10834
IWA publishing