Publications des scientifiques de l'IRD

Borsa Philippe, Arlyza I.S., Laporte M., Berrebi P. (2012). Population genetic structure of blue-spotted maskray Neotrygon kuhlii and two other Indo-West Pacific stingray species (Myliobatiformes : Dasyatidae), inferred from size-polymorphic intron markers. Journal of Experimental Marine Biology and Ecology, 438, p. 32-40. ISSN 0022-0981.

Titre du document
Population genetic structure of blue-spotted maskray Neotrygon kuhlii and two other Indo-West Pacific stingray species (Myliobatiformes : Dasyatidae), inferred from size-polymorphic intron markers
Année de publication
2012
Type de document
Article référencé dans le Web of Science WOS:000312239200005
Auteurs
Borsa Philippe, Arlyza I.S., Laporte M., Berrebi P.
Source
Journal of Experimental Marine Biology and Ecology, 2012, 438, p. 32-40 ISSN 0022-0981
Exon-primed, intron crossing DNA markers (EPICS) were screened for Mendelian-like allele size polymorphisms in three stingray species (Himantura gerrardi, Neotrygon kuhlii and Taeniura lymna) from the central Indo-West Pacific, where they are commercially exploited. Four to 7 size-polymorphic intron loci were selected in a species, and were subsequently tested as genetic markers of stock structure. Sharp genetic differentiation was observed between populations within each species across the Indo-Malay-Papua archipelago (Weir and Cockerham's (theta) over bar -values reaching 0.153-0.557 over a few thousand kilometers). A trend of increasing genetic differentiation with increasing geographic distance was apparent in N. kuhlii, in which populations distant by 3000 km were differentiated by an estimated (theta) over bar -0.375. This value was an order of magnitude higher than usually reported in coastal benthic teleost fishes and indicates strong sub-population structure. This is likely, at least partly, a consequence of the sedentary benthic habits of N. kuhlii at all life stages. Because replenishment of overexploited populations of N. kuhlii and two other stingray species from the central Indo-West Pacific is unlikely at ecological timescales, management should be planned at the local geographic scale.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Ressources halieutiques [040]
Description Géographique
PACIFIQUE ; OCEAN INDIEN ; INDONESIE
Localisation
Fonds IRD [F B010058222]
Identifiant IRD
fdi:010058222
Contact