|
|||||
|
|
In the intimacy of the darkness: Genetic polyandry in deep-sea luminescent lanternsharks Etmopterus spinax and Etmopterus molleri (Squaliformes,Etmopteridae) |
|
| Authors: | Laurent Duchatelet Nicolas Oury Jérôme Mallefet Hélène Magalon |
| Institution: | 1. Marine Biology Laboratory, Earth and Life Institute, Université Catholique de Louvain, Louvain-La-Neuve, Belgium;2. UMR ENTROPIE (Université de La Réunion, IRD, IFREMER, Université de Nouvelle-Calédonie, CNRS), Université de La Réunion, Faculté des Sciences et Technologies, St Denis Cedex 09, La Réunion, France
Laboratoire Cogitamus, Paris, France;3. UMR ENTROPIE (Université de La Réunion, IRD, IFREMER, Université de Nouvelle-Calédonie, CNRS), Université de La Réunion, Faculté des Sciences et Technologies, St Denis Cedex 09, La Réunion, France Laboratoire Cogitamus, Paris, France Laboratoire d'Excellence CORAIL, Perpignan, France |
| Abstract: | Multiple paternity seems common within elasmobranchs. Focusing on two deep-sea shark species, the velvet belly lanternshark (Etmopterus spinax) and the slendertail lanternshark (Etmopterus molleri) we inferred the paternity in 31 E. spinax litters from Norway (three to 18 embryos per litter) and six E. molleri litters from Japan (three to six embryos), using 21 and 10 specific microsatellites, respectively. At least two E. spinax litters were sired from multiple fathers each, with highly variable paternal skew (1:1 to 9:1). Conversely, no clear signal of genetic polyandry was found in E. molleri. |
| Keywords: | Etmopteridae microsatellites paternity test polyandry squaliformes |