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Allochthonous and autochthonous components from gizzard grit of Theristicus melanopis in anthropogenic pastures of southern chile
Provedor de dados: 72
Autores: Gantz,Alberto; Valdivia,Carlos E; Yañez,Miguel; Sade,Soraya.
Numerous vertebrates, and in particular birds, ingest stones (geo-gastrolites) to favour the breakdown and digestion of food in the muscular stomachs. Between 1993 and 1994 we evaluated the quantity, relative abundance and quality of autochthonous (geo-gastrolites) and allochthonous (pieces of glass) components of the grit in gizzards of black-faced ibis (Theristicus melanopis) inhabiting the pastures of southern Chile. Grit elements were present in 32 out of 48 (66,7%) of all gizzard analysed. A total of 572 particles were recorded from which, 69.1% corresponded to autochthonous elements and 27.8% were allochthonous particles. Both components are similar in shape; however glass contributes considerably more in terms of mass. Gender differences reveal that...
Tipo: Journal article
Palavras-chave: Black-faced ibis; Glasses; Gastrolites; Pastures; South Chile.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000100003