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Multilocus data reveal cryptic species in the Atlantic seabob shrimp Xiphopenaeus kroyeri (Crustacea: Decapoda)
Kerkhove, T.R.H.; Boyen, J.; De Backer, A.; Mol, J.; Volckaert, F.A.M.; Leliaert, F.; De Troch, M. (2019). Multilocus data reveal cryptic species in the Atlantic seabob shrimp Xiphopenaeus kroyeri (Crustacea: Decapoda). Biol. J. Linn. Soc. 127(4): 847-862. https://dx.doi.org/10.1093/biolinnean/blz065
In: Biological Journal of the Linnean Society. Academic Press: London; New York. ISSN 0024-4066; e-ISSN 1095-8312
Peer reviewed article  
Available in  Authors 
Keywords
    Biodiversity
    Biogeny > Phylogeny
    Geography > Biogeography
    Speciation
    Penaeidae Rafinesque, 1815 [WoRMS]
    Marine/Coastal
Author keywords
    fishery resource; Guianan ecoregion; multilocus approach; multispecies coalescent; species delimitation
Authors  Top 
  • Kerkhove, T.R.H.
  • Boyen, J.
  • De Backer, A.
  • Mol, J.
  • Volckaert, F.A.M.
  • Leliaert, F., more
  • De Troch, M.
Abstract
    The recognition of cryptic biodiversity provides valuable insights for the management of exploited species. The Atlantic seabob shrimp (Xiphopenaeus kroyeri) is a commercially important fishery resource in the Guianan ecoregion, South America. Previous research in Brazil suggested the presence of cryptic species within the genus. Here, we confirm this presence and delimit the species by applying a multilocus approach based on two mitochondrial (COI and cytb) and two nuclear (PEPCK and NaK genes. Species boundaries were tested using BPP, GMYC and bPTP delimitation algorithms. These analyses provided strong support for three clades within the genus Xiphopenaeus, including one undescribed clade, which occurs sympatrically with X. kroyeri in the Western Atlantic. Unexpectedly, this undescribed clade is more closely related to the Pacific Xiphopenaeus riveti than to their Atlantic congener. Our DNA-based species delimitation was further supported by new ecological information on habitat and morphology (colour). We also expand the known distribution range of the cryptic species, currently restricted to Brazil, to include French Guiana, Suriname and Colombia. Our findings have important consequences for the management of the species, in terms of both biodiversity management and fisheries management.
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