Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Journal of Experimental Marine Biology and Ecology 32-40 Conservation Fishery Himantura gerrardi Indo-Malay-Papua archipelago Population genetic structure Taeniura lymna PACIFIQUE OCEAN INDIEN INDONESIE 2012 fdi:010058222 ENG Journal of Experimental Marine Biology and Ecology 0022-0981 ISI:000312239200005 10.1016/j.jembe.2012.09.010 https://www.documentation.ird.fr/hor/fdi:010058222 https://www.documentation.ird.fr/intranet/publi/2013/01/010058222.pdf 438 Horizon (IRD) 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 UR227 / UR226 Indonésie