47 research outputs found
Molecular cytogenetic differentiation of paralogs of Hox paralogs in duplicated and re-diploidized genome of the North American paddlefish (Polyodon spathula)
Molecular analysis of phylogeographic subspecies in three Ponto-Caspian sturgeon species
Molecular cytogenetic analysis of the karyotype of the European Atlantic sturgeon, Acipenser sturio
Attempts on artificial induction of sexual maturation of sterlet (Acipenser ruthenus) and identification of late spermatogenesis stage in hermaphroditic fish
First evidence of hybridization between endangered sterlets (Acipenser ruthenus) and exotic Siberian sturgeons (Acipenser baerii) in the Danube River
Atlantic sturgeons (Acipenser sturio, Acipenser oxyrinchus): American females successful in Europe
Historical presence of the sturgeon Acipenser sturio in the RhĂ´ne basin determined by the analysis of ancient DNA cytochrome b sequences
Sturgeon disappeared from the Rhoˆne River in the mid 70’s without certitude about which species it was and about the existence of a sympatry between European sturgeon, Acipenser sturio, and Adriatic sturgeon, A. naccarii, in this watershed. In order to reach a reliable specific determination of this extinct sturgeon population, archaeozoological remains of the Jardin d’Hiver in Arles city, on the Rhoˆne river banks, were genetically analysed, following strict criteria of authentication for the ancient DNA work. The rich collection of Arles sturgeon bone remains stems from human activities between the 6th and the 2nd Century BC. Sequences of 86 bp of the cytochrome b gene were obtained on four bones, from different anatomical parts of the fish and from different archaeological layers. All gave A. sturio diagnostic sequences. This preliminary analysis is an essential first step in the project of sturgeon reintroduction in the Rhoˆne River. Thus, further analyses on a larger sample are necessary to comfort this result and to solve the question of sympatry with A. naccarii