Navegando por Autor "Lustosa, Ana P. G."

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Artigo
Nesting of Phrynops geoffroanus (Testudines: Chelidae) on sandy beaches along the Upper Xingu River, Brazil.
(Zoologia, 2011-10) Ferreira Júnior, Paulo D.; Balestra, Rafael A. M.; Moreira, José R.; Freitas, Fábio de O.; Lustosa, Ana P. G.; Jorge, Rafael F.; Rosa, Artur J. de M.; Sampaio, Antônio A.; Gomes, Aline S.
This work presents the first data on incubation temperature of Phrynops geoffroanus (Schweigger, 1812) in a natural environment, and provides information on nest predation, hatching success and size of offspring born in the nests on sandy beaches along the Upper Xingu River. Thirty-one P. geoffroanus nests were found, of which eleven were completely predated, mainly by Cerdocyon thous (Linnaeus, 1766). Incubation was completed in nine out of the 17 nests protected by netting. The nests presented an average of 13.1 eggs and were distributed over the various geomor phological sectors of the nine sampled beaches. The size and weight of the hatchlings varied significantly between nests, and the incubation period in protected nests lasted for 76.5 days, less than reported for controlled incubation in the laboratory. Daily variation in incubation temperature in the three nests monitored for temperature was lower in those situated in fine sand sediments. Incubation temperature varied from 22 to 39 C and may have affected hatching success, which reached 60.8% in protected nests. Nest distribution in different geomorphological sectors indicated the plasticity of P. geoffroanus in terms of variation in nesting environment, which partly explains the species’ broad geoographical distribution.
Artigo
Procedure for collecting gastric contents in Giant Amazon Turtles Podocnemis expansa (Schweigger, 1812) (testudines, Podocnemididae).
(Braz. J. Vet. Pathol., 2011) Alves Júnior, José R. F.; Sousa, Eliane de; Lustosa, Ana P. G.; Magajevski, Fernanda S.; Girio, Raul J. S.; Werther, Karin
The genus Podocnemis, of the family Podocnemididae, is represented in South America by six species: P. expansa, P. erytrocephala, P. vogli, P. lewyana, P. unifilis and P. sextuberculata (4, 7). The species P. expansa (Fig. 1), known as the giant Amazon turtle, is largely distributed throughout the Amazon river and in most of its tributaries (3). The giant Amazon turtle is found in the states of Amapá, Pará, Amazonas, Rondônia, Acre, Roraima, Tocantins, Goiás and Mato Grosso, encompassing equatorial forests and savanna (cerrado) ecosystems in the north and west-central regions of Brazil (3). This reptile can measure from 75 to 107cm in length, 50 to 75cm in width and weigh up to 60kg (9), being the largest fresh water testudine in South America (2, 5, 8). They are long-lived animals with late sexual maturation and a low individual replacement rate (1, 6).