IDEAUS - CENPAT   25626
INSTITUTO DE DIVERSIDAD Y EVOLUCION AUSTRAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Nest features of the Two-banded Plover (Charadrius falklandicus) in the 42 S parallel
Autor/es:
HERNÁNDEZ MARIA DE LOS ÁNGELES; COLAZO ANA; CASTILLO JOANNA M; BALA LUIS; MUSMECI LUCIANA
Reunión:
Congreso; VIII Western Shorebird Group Meeting; 2019
Institución organizadora:
Audubon Panamá
Resumen:
Birds reproduction is key to their survival and preventing nest predation is their biggest challenge, being one of the ways to avoid it through crypticity. On the other hand, it is essential to keep the eggs in a favorable thermal range for the successful development of the embryo. In this work the architecture of nests was evaluated with respect to the site used to nest. A total of 92 nests of Two-banded Plover were evaluated in beaches of Península Valdés and surroundings, between 2000 and 2018. The type of material used for the nest construction was recordered and compared with the available material in the environment. The shape and size of the nest were analyzed. In addition, the nest temperature and the environment temperature were recorded. The materials used for the nests construction varied between the different sites; being the most selected materials the remains of bivalve shells, dry branches, pebbles and algae. The depth of the nests varied between 1.8 to 5.5 cm, and the average diameter was 10.0 cm (DS 1.6), covering an area of 80 cm2 (DS 25.8). Respect to temperature of incubation, the nests maintained a bounded temperature range between 20 to 30 ºC, facing an environmental thermal amplitude that oscillated widely between 10 and 40 ºC. The results obtained show the versatility that this species presents when nesting as diverse as a halophytic pasture, and a pebble beach among others, and also maintain the cryptic.