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Advanced sexual maturation before marine migration of Anguilla bicolor bicolor and Anguilla marmorata at Réunion Island

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Abstract:

Maturing sub-adults of two species of anguillid eels (a female Anguilla bicolor bicolor and a male Anguilla marmorata) were collected for the first time at Réunion Island, western Indian Ocean. Both were silver eels, i.e. maturing eels at the onset of their spawning migration, and characterized by advanced sexual maturation that has been only observed in Anguilla dieffenbachii from New Zealand.

Keywords: Anguilla spp; gonad maturation; oogenesis; spawning migration; spermatogenesis

Document Type: Research Article

DOI: https://doi.org/10.1046/j.1095-8649.2003.00165.x

Affiliations: 1: Laboratoire de Biologie et Environnement Marins UPRES-EA 3168 – Université de La Rochelle, Bâtiment Marie Curie, Rue Enrico Fermi, 17000 La Rochelle, France, 2: MNHN/CNRS/Université Paris VI, USM 0401 Biologie des Organismes Marins et Ecosystèmes, Département des Milieux et Peuplements Marins, Muséum National d'Histoire Naturelle, 7 rue Cuvier, 75231 Paris Cedex 05, France, 3: Collège Henri Wallon, rue Anatole France, BP128, 56602 Lanester Cedex, France and 4: Fish-Pass, Bureau Expert Gestion Piscicole, 8 allée de Guerlédan, Z.A. Parc rocade sud, 35135 Chantepie, France

Publication date: 2003-08-01

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