ABSTRACT. Spatio-temporal distribution and reproductive success of Eretmochelys imbricata on the beaches of Ipojuca, Pernambuco, Brazil. This study aimed to verify the spatio-temporal distribution of Eretmochelys imbricata (Linnaeus, 1766) and aspects of its reproductive biology, such as incubation time, reproductive success, biometric measurements of females, number of nests and fecundity. Data were collected during 2007 to 2010, on the beaches of Muro Alto, Cupe, Merepe, Porto de Galinhas, and Maracaípe, all of them located in the city of Ipojuca, state of Pernambuco, Brazil. Parameters relating to reproductive biology and nesting areas of the species were comparatively analyzed. Eretmochelys imbricata was recorded nesting between October and May, when 350 nests were monitored through three seasons. The spawning peak happened from January to March, also revealing a seasonal pattern. The number of nests differed significantly between seasons. The Merepe beach presented an elevated occurrence of nests (46 nests/km) if compared to the other monitored beaches. On the aspects of reproductive biology, the reproductive success was 65,6% and the incubation time interval ranged from 54 to 56 days. Biometric measurements were collected from 59 specimens, resulting in an average of 92,5 cm ± 4,5 for the curved carapace length, and of 83,4 cm ± 5 for the curved carapace width. The results can be used for subsidize conservation plans and demonstrate that the beaches recorded in this study are relevant as nesting areas for E. imbricata. KEYWORDS.Hawksbill turtle, seasons, reproduction, ecology, Testudine. RESUMO.Este estudo objetivou verificar a distribuição temporal e espacial de Eretmochelys imbricata (Linnaeus, 1766) e aspectos de sua biologia reprodutiva, tais como tempo de incubação, sucesso reprodutivo, biometria das fêmeas, número de ninhos e fecundidade. Os dados foram coletados de 2007 a 2010 nas praias de Muro Alto, Cupe, Merepe, Porto de Galinhas e Maracaípe, todas elas localizadas no município do Ipojuca, estado de Pernambuco, Brasil. Foram analisados comparativamente parâmetros relativos à biologia reprodutiva e áreas de nidificação da espécie. Eretmochelys imbricata foi registrada nidificando entre os meses de outubro a maio, totalizando 350 ninhos monitorados em três temporadas. Os picos de desova ocorreram de janeiro a março, revelando um padrão sazonal das desovas. Houve diferença significativa entre o número de ninhos nas temporadas. A praia de Merepe apresentou uma ocorrência elevada de ninhos (46 ninhos/km) em relação às demais praias monitoradas. Quanto aos aspectos da biologia reprodutiva, o sucesso reprodutivo foi 65,6%, e o intervalo do tempo de incubação de 54 a 56 dias. As medidas biométricas foram coletadas de 59 espécimes, e apresentaram média de 92,5 cm ± 4,5 para o comprimento curvilíneo da carapaça e de 83,4 cm ± 5 para a largura curvilínea da carapaça. Os resultados podem ser utilizados para subsidiar planos de conservação e demonstram que as praias registradas neste estudo têm relevância co...

TemperaTura de incubação e razão sexual em filhoTes recém-eclodidos da TarTaruga marinha ErEtmochElys imbricata (linnaeus, 1766) no município do ipojuca, pernambuco, brasil Thyara n. simões 1 arley c. da silva 2 ednilza m. dos sanTos 3 crisTiano a. chagas 4 ABSTRACTThe development of sex in sea turtles is determined by the temperature incubation of the eggs (TSD -Temperature dependent Sex Determination). For Eretmochelys imbricata species, very little is known about the sex ratio of spawning which occur in the southern coast of Pernambuco. Therefore, the purpose of this study is to analyze the relationship between sexual development and temperature incubation of nests of hawksbill turtles deposited in Merepe Beach County Ipojuca, Pernambuco. The temperature data were collected from nine nests during the months from January to June 2013, with the aid of registers type temperature data loggers (Onset Computer Model, UA-001-08). The average recorded for nests sampled depending on the incubation period and temperature were 54 days and 31.68°C. Based on these results, the nests showed a strong trend towards the development of females, with the sex ratio, estimated by histological analysis, 86.53% for females. So the beach Merepe has temperatures that provide greater differentiation of newborn females. However, more detailed studies should be carried out with the intention of verifying whether these results can be obtained for any ipojucano coast.