SciELO - Scientific Electronic Library Online

 
vol.79 número1Manejo de un sitio de anidación para la conservación de Sternula antillarum (Charadriiformes: Laridae) en Baja California Sur, MéxicoSistemas de información geográfica y análisis espaciales: un método combinado para realizar estudios panbiogeográficos índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Revista mexicana de biodiversidad

versión impresa ISSN 1870-3453

Resumen

GALLO-REYNOSO, Juan Pablo; RAMOS-ROSAS, Nadia Nayeli  y  RANGEL-AGUILAR, Óscar. Aquatic bird predation by neotropical river otter (Lontra longicaudis annectens), at Rio Yaqui, Sonora, Mexico. Rev. Mex. Biodiv. [online]. 2008, vol.79, n.1, pp. 275-279. ISSN 1870-3453.

We report the predation of aquatic birds by neotropical river otters (L. longicaudis annectens) at Río Yaqui, Sonora. As many as 25 skulls, post-cranial skeletons and feathers were found at river otter feeding sites. The neotropical cormorant (Phalacrocorax brasilianus) was the most predated bird with 16 individuals, followed by Mexican mallard (Anas platyrhynchos diazi) with 4 individuals, great egret (Ardea alba) with 3 individuals, yellow-crowned night-heron (Nyctanassa violacea), and brown pelican (Pelecanus occidentalis), both with 1 individual. With respect to fish, the tilapia Oreochromis, was the only species found in scats. Neotropical river otter feeding habits were associated with food availability at different seasons of the year. These records show that neotropical river otters are opportunistic predators, that use a wide range of species from riparian habitats. These records also support the idea that neotropical river otters should be considered as an umbrella species for the preservation of whole ecosystems given that their presence is an indicator of high energetic availability and high biodiversity.

Palabras llave : aquatic bird predation; neotropical river otter; Río Yaqui.

        · resumen en Español     · texto en Español     · pdf en Español