Isolation By Distance (IBD) signals in the deep-water rose shrimp Parapenaeus longirostris (Lucas, 1846) (Decapoda,Panaeidae) in the Mediterranean Sea |
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| Institution: | 1. Ifremer, Unité de Sciences et Technologies halieutiques, Laboratoire de Technologie et Biologie Halieutique, 8 rue François Toullec, F-56325 Lorient Cedex, France;2. Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de de Biogéochimie des Contaminants Métalliques, rue de l’île d’Yeu, B.P. 21105, F-44311 Nantes Cedex 03, France;3. Littoral Environnement et Sociétés, UMR 7266 CNRS – Université La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01, France;1. Grupo Ecología Marina Aplicada y Pesquerías, Instituto Universitario de Investigación en Estudios Ambientales y Recursos Naturales i-UNAT, Universidad de Las Palmas de Gran Canaria, Campus de Tafira, Las Palmas de Gran Canaria, 35017 Las Palmas, Spain;2. Direção de Serviços de Investigação e Desenvolvimento das Pescas, Estrada da Pontinha, 9004-562 Funchal, Madeira, Portugal;3. Instituto Nacional de Desenvolvimento das Pescas, C.P.132 Mindelo, São Vicente, Cabo Verde;1. Department of Biology, University of Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy;2. LRU CoNISMa of Bari, Italy |
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| Abstract: | The identification of boundaries of genetic demes is one of the major goals for fishery management, and few Mediterranean commercial species have not been studied from a genetic point of view yet. The deep-water rose shrimp Parapenaeus longirostris (Lucas, 1846) is one of the most important components of commercial landings in Mediterranean, its fishery aspects have received much attention, regrettably without any concern for the genetic architecture of its populations. The population structure in the central and eastern Mediterranean Sea (captures from six Italian and two Greek landings) has been analysed on the basis of surveys carried out with mitochondrial and AFLP markers. Data revealed the presence of a gradual discrepancy along a west–east axis. This species, occurring mainly at a depth of between 100 and 400 m, is not strongly confined in isolated demes, but it demonstrates an ‘Isolation By Distance’ model, within the Mediterranean Sea, which includes geographical areas with a some degree of isolation. The role of hydrodynamic forces, such as currents, water fronts, is discussed; and a further evidence of the ‘Levantine isolation’ within Mediterranean basin is shown. |
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| Keywords: | AFLP mtDNA Isolation By Distance Mediterranean Sea |
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