%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Borsa, Philippe
%A Arlyza, I.S.
%A Laporte, M.
%A Berrebi, P.
%T 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
%D 2012
%L fdi:010058222
%G ENG
%J Journal of Experimental Marine Biology and Ecology
%@ 0022-0981
%K Conservation ; Fishery ; Himantura gerrardi ; Indo-Malay-Papua archipelago ; Population genetic structure ; Taeniura lymna
%K PACIFIQUE ; OCEAN INDIEN ; INDONESIE
%M ISI:000312239200005
%P 32-40
%R 10.1016/j.jembe.2012.09.010
%U https://www.documentation.ird.fr/hor/fdi:010058222
%> https://www.documentation.ird.fr/intranet/publi/2013/01/010058222.pdf
%V 438
%W Horizon (IRD)
%X 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.
%$ 040 ; 020