Chelonian Conservation and Biology, 2009, 8(2): 150–160 g 2009 Chelonian Research Foundation Status, Ecology, and Conservation of Sea Turtles in Guinea-Bissau 1 2 3 4 5 PAULO CATRY ,CASTRO BARBOSA ,BRUNO PARIS ,BUCAR INDJAI ,AMADEU ALMEIDA , 6 2 2 BENOIT LIMOGES ,CRISTINA SILVA , AND HONO´ RIO PEREIRA 1Eco-Ethology Research Unit & Centro de Biocieˆncias, Instituto Superior de Psicologia Aplicada, Rua Jardim do Tabaco 34, 1149-041 Lisboa, Portugal [
[email protected]]; 2Instituto da Biodiversidade e das A´reas Protegidas, Bissau. Guinea-Bissau [
[email protected];
[email protected]]; 3Department of the Environment, Canada [
[email protected]]; 4Instituto Nacional de Estudos e Pesquisas, Bissau [
[email protected]]; 5Centro de Investigac¸a˜o Pesqueira Aplicada, Bissau; 6Ministe`re du De´veloppement durable, de l’Environnement et des parcs du Que´bec [
[email protected]] ABSTRACT. – This paper provides the first overview of sea turtles in Guinea-Bissau, presents data on their ecology, and analyzes threats and conservation initiatives. The green turtle (Chelonia mydas) is by far the most widespread and abundant of the 5 species that nest in Guinea-Bissau. Between ca. 7000 and 29,000 green turtle nests are laid per year at the globally important site of Poila˜o Island, with a few hundred more on surrounding islands. There is a marked interspecific variability in nesting seasonality, with green and hawksbill (Eretmochelys imbricata) turtles nesting mostly during the rainy season and olive ridley (Lepidochelys olivacea) and leatherback turtles (Dermochelys coriacea) during the dry season. Informal interviews all over the coastal zone suggest that sea turtle populations have markedly declined within living memory.