title: Inferring population connectivity across the range of distribution of the stiletto shrimp Artemesialonginaris Spence Bate, 1888 (Decapoda, Penaeidae) from DNA barcoding: implications for fishery management.
abstract: Artemesialonginaris is a marine shrimp endemic to the southwestern Atlantic and distributed from Atafona, Rio de Janeiro (Brazil) to Rawson, Chubut (Argentina). In recent years, this species has become an important target of the commercial fishery as a consequence of the decline in the fishery of more traditional and profitable marine shrimps. In addition, phenotypic variations have been documented in populations along its distribution. Therefore, investigations on the genetics of the fishing stocks are necessary for the development of sustainable management strategies and for understanding the possible sources of these variations. The mitochondrial gene Cytochrome Oxidase I (COI) was used to search for evidence of genetic structure among the populations of Artemesialonginaris and to analyze the phylogenetic relationships among them. A total of 60 specimens were collected from seven different localities, covering its geographical range. The final alignment showed 53 haplotypes (48 individuals and 5 shared), with no biogeographical pattern. The low genetic divergence found, with a non-significant FST value, also suggests the absence of population structure for this gene. These findings indicate a continuous gene flow among the populations analyzed, suggesting that the phenotypic variation is a consequence of different environmental conditions among the localities.
authors.affiliation: Laboratory of Biology of Marine and Fresh Water Shrimps, Faculty of Science, Department of Biological Sciences, São Paulo State University (UNESP), Bauru, São Paulo, Brazil.
authors.forename: Abner
authors.initials: A
authors.lastname: Carvalho-Batista
authors.affiliation: Laboratory of Bioecology and Crustacean Systematics, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo (USP), Postgraduate Program in Comparative Biology, Ribeirão Preto, São Paulo, Brazil.
authors.forename: Mariana
authors.initials: M
authors.lastname: Negri
authors.affiliation: Laboratory of Bioecology and Crustacean Systematics, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo (USP), Postgraduate Program in Comparative Biology, Ribeirão Preto, São Paulo, Brazil.
authors.forename: Leonardo G
authors.initials: LG
authors.lastname: Pileggi
authors.affiliation: São Paulo State University (UNESP), Biosciences Institute of Botucatu, Zoology Department, Botucatu, Brazil.
authors.forename: Antonio L
authors.initials: AL
authors.lastname: Castilho
authors.affiliation: Laboratory of Biology of Marine and Fresh Water Shrimps, Faculty of Science, Department of Biological Sciences, São Paulo State University (UNESP), Bauru, São Paulo, Brazil.
authors.forename: Rogério C
authors.initials: RC
authors.lastname: Costa
authors.affiliation: Laboratory of Bioecology and Crustacean Systematics, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo (USP), Postgraduate Program in Comparative Biology, Ribeirão Preto, São Paulo, Brazil.
authors.forename: Fernando L
authors.initials: FL
authors.lastname: Mantelatto
keywords: Cytochrome Oxidase I; Penaeoidea; gene flow; phenotypic plasticity