Eva Andersson, Rüdiger W Schulz, Fernanda Almeida, Lene Kleppe, Kai Ove Skaftnesmo, Erik Kjærner-Semb, Diego Crespo, Per Gunnar Fjelldal, Tom Johnny Hansen, Birgitta Norberg, Rolf B Edvardsen, Anna Wargelius
Early puberty poses a significant challenge for male Atlantic salmon in aquaculture due to its negative impact on growth and welfare. The regulation of puberty in vertebrates involves two key reproductive hormones: follicle-stimulating hormone (FSH) and luteinizing hormone (LH) and their gonadal receptors. In male mice lacking FSH receptor, testes size is reduced, but fertility is maintained, while medaka and zebrafish with a disrupted fshr gene exhibit near normal testis size and fertility. In these fishes both Fsh and Lh are present during puberty and Lh may rescue fertility, while in salmonid fish only Fsh is present in the circulation during puberty...
January 31, 2024: Endocrinology