Influence of temperature regime on endocrine parameters and vitellogenesis during experimental maturation of European eel (Anguilla anguilla) females

• Published in: General and Comparative Endocrinology
• Main Authors: Pérez Igualada, Luz María, Peñaranda, D.S., Dufour, S., Baloche, S., Palstra, A. P., Van den Thillart, G.E.E.J.M., Asturiano Nemesio, Juan Francisco
• Other Authors: Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal, Universitat Politècnica de València. Instituto de Ciencia y Tecnología Animal - Institut de Ciència i Tecnologia Animal, European Commission, Generalitat Valenciana, Universitat Politècnica de València
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2011
• Subjects: E2; Eel; Esr1; Fshß; Lhß; MRNA; Temperature; Vitellogenesis; Vtg2; Estradiol; Follitropin; Follitropin beta subunit; Hormone; Hypophysis extract; Luteinizing hormone beta subunit; Vitellogenin; Anguilla anguilla; Animal experiment; Animal tissue; Article; Controlled study; Developmental stage; Estradiol blood level; Estrogen receptor 1 gene; Female; Fsh beta gene; Gene; Heat treatment; Lh beta gene; Liver; Maturation; Nonhuman; Nucleotide sequence; Ovary development; Ovulation; Priority journal; Protein blood level; Vitellogenin 2 gene; Vitellogenin blood level; Anguilla; Animals; Carps; Endocrine System; Follicle Stimulating Hormone; beta Subunit; Pituitary Gland; Tissue Extracts; Vitellogenins; BIOLOGIA ANIMAL; PRODUCCION ANIMAL; Nemesio
• Online Access: http://hdl.handle.net/10251/68472; https://doi.org/10.1016/j.ygcen.2011.08.009

[EN] 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. © 2011 Elsevier Inc. This study was funded from the European Community’s 7th Framework Programme under the Theme 2 ‘‘Food, Agriculture and Fisheries, and Biotechnology’’, Grant Agreement No. 245257 (Pro-Eel) and Generalitat Valenciana through the GV/2007/202 project and ACOMP/2011/229. D.S. Peñaranda has a postdoc grant from the Universitat Politècnica de València (CE-01-10). The authors would like to thank M. Nieveen for technical assistance. Pérez Igualada, LM.; Peñaranda, D.; Dufour, S.; Baloche, S.; Palstra, AP.; Van Den Thillart, G.; Asturiano Nemesio, JF. (2011). Influence of temperature regime on endocrine parameters and vitellogenesis during experimental maturation of European eel (Anguilla anguilla) females. General and Comparative Endocrinology. 174(1):51-59. https://doi.org/10.1016/j.ygcen.2011.08.009 S 51 59 174 1