SciELO - Scientific Electronic Library Online

 
vol.28 número1Dieta estacional del Jote Cabeza Negra (Coragyps atratus) en un área rural y una urbana en el noroeste patagónicoDistribución y estatus de la Garza Azul (Egretta caerulea) en Argentina índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

Compartir


El hornero

versión impresa ISSN 0073-3407

Resumen

MUSMECI, Luciana; BALA, Luis O  y  HERNANDEZ, María de los Ángeles. Dieta del Chorlito Doble Collar (Charadrius falklandicus) en Península Valdés, Patagonia, Argentina. Hornero [online]. 2013, vol.28, n.1, pp.15-21. ISSN 0073-3407.

The objective of this study was to evaluate the diet of the Two-banded Plover (Charadrius falklandicus) in Playa Colombo (Golfo Nuevo, Península Valdés), and to compare it with the diet recorded in previous studies in Playa Fracasso (Golfo San José), a site with similar characteristics 21 km away. In February and March 2003, we collected 49 faeces that were conserved individually. The diet was reconstructed based on the identification of key structures present in the faeces. Seven prey items were identified, with the most important components being, in decreasing order, the polychaete Travisia olens, the clam Darina solenoides and insects. We recorded 1.3 clams per sample, with a mean size of 10.6 mm and an equivalent biomass (expressed as ash-free dry weight) of 6.4 mg. We estimated benthic invertebrate abundance in order to measure the trophic offer. Plovers selected clam sizes of 4-12 mm. The diet was similar between months. The most important prey in Playa Fracasso is Darina solenoides, followed by Travisia olens. Plovers eat a lower quantity of clams, but with higher size and biomass, in Playa Colombo than in Playa Fracasso.

Palabras clave : Charadrius falklandicus; Foraging; Playa Colombo; Prey; Shorebirds; Size selection; Trophic offer.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons