Influence of temperature regime on endocrine parameters and vitellogenesis during experimental maturation of European eel (Anguilla anguilla) females.
Gen Comp Endocrinol
; 174(1): 51-9, 2011 Oct 01.
Article
in En
| MEDLINE
| ID: mdl-21871894
ABSTRACT
We examined the effect of temperature in European silver eels during their maturation induced by injections of carp pituitary extract on endocrine parameters pituitary fshß and lhß expression, plasma 17ß-estradiol (E2) and vitellogenin, estrogen receptor 1 (esr1), and vitellogenin 2 (vtg2) expression in liver. A variable thermal regime (T10) that increased from 10° to 14° and 17°C was compared with a constant 20°C regime (T20) during 12 weeks. T10 caused a faster development until week 8, higher fshß, lhß, esr1 expression, and higher E2 levels. The results strongly suggest that T10 is inducing a higher endogenous FSH level which increases the E2 circulating level during vitellogenesis. A variable thermal regime induced an fshß expression and E2 profile in vitellogenic hormonally matured eel females that were more similar to the profile observed in other naturally maturing fish.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Temperature
/
Vitellogenesis
/
Endocrine System
/
Anguilla
Limits:
Animals
Language:
En
Journal:
Gen Comp Endocrinol
Year:
2011
Document type:
Article
Affiliation country:
Spain