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Accueil du site → Doctorat → Allemagne → 2008 → Lessepsian Migrant fish Species of the Coastal Waters of Libya : Status, Biology, Ecology

Universität Rostock (2008)

Lessepsian Migrant fish Species of the Coastal Waters of Libya : Status, Biology, Ecology

Shakman, Esmaile A.

Titre : Lessepsian Migrant fish Species of the Coastal Waters of Libya : Status, Biology, Ecology

Auteur : Shakman, Esmaile A.

Université de soutenance : Universität Rostock

Grade : Doctor rerum naturalium (Dr. rer. nat.) 2008

Résumé
The aim of this thesis is to present a monographic study on the present status of immigrant fish species in Libyan coastal wa ters, focusing on Lessepsian migrants. This fills a gap of nearly 2000 km of the Afri can coastline of the Mediterranean Sea. Information is contributed on the history and th e development of stocks of exotic fish, to the actual and forthcoming situation. For selected species of commercial value their identity and genetic pattern are compared w ith the region of their origin. Their biology, life cycles, ecology are explored, their actual and future commercial value presented resp. discussed. Details to deal with are : The identification of Lessepsian species, investigation about their distribution and characterization of stocks, mainly of sp ecies of commercial value along the Libyan coast. • Assessment of the exploitation and value of Lessepsian fish for the Libyan coastal fishery. Identification of the important fishing gears and the fishing crafts, assessment of the amounts and values of catches. • Comparative food ecology of Lessepsian herbivorous fish species in the coastal area of Libya and comparison of the results with data available from different localities of the Mediterranean and Red Seas. • Investigations on the reproduction and on some biological aspects, mainly by studies of the both Siganids. The results were comp ared with data available from different localities of the Mediterranean and Red Seas. • Investigations on the gene flow and genetic variation within and between immigrant Siganus spp. (Mediterranean Sea) and sour ce populations (Red Sea) using the mitochondrial DNA (Cytochrome b and control region).

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