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Original Article

To each his own taste: latrines of the giant otter as a food resource for vertebrates in Southern Pantanal, Brazil

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Pages 81-85 | Received 14 Feb 2012, Accepted 24 May 2012, Published online: 22 Jun 2012
 

Abstract

Pteronura brasiliensis feeds mainly on fish and uses communal latrines for territorial marking. The aim of this study was to identify the vertebrate species associated with latrines of giant otters and which species use the feces as a food resource. From December 2010 to June 2011, we positioned camera traps in front of 21 latrines of six different giant otter groups in 24 h cycles monthly. We registered 29 vertebrate species at latrines. Latrines seem to be used as a frequent food resource for some species. Studies of giant otter diets should take into account possible changes in relative abundance of prey items due to consumption of feces.

Pteronura brasiliensis se alimenta principalmente de peixes e utiliza latrinas para marcação territorial. O objetivo deste estudo foi identificar as espécies de vertebrados associadas a latrinas de ariranhas e as espécies que utilizam as fezes como fonte de recurso. De dezembro de 2010 a junho de 2011, posicionamos armadilhas fotográficas em frente a 21 latrinas de seis grupos de ariranhas distintos, mensalmente em ciclos de 24 h. Registramos 29 espécies de vertebrados em latrinas. Latrinas parecem ser utilizadas como um recurso freqüente por algumas espécies. Estudos sobre dieta de ariranhas devem considerar a possibilidade de alterações na abundância relativa dos itens de presas.

Acknowledgments

We thank CNPq/Universal (n 476939/2008-9) and The Rufford Small Grants Foundation (Grant 88.08.09) for financial support. Embrapa/Pantanal, Barranco Alto Farm and the Federal University of Mato Grosso do Sul provided logistical support. CNPq provided scholarships for CL and CR. Sidnei Benício, Procópio de Almeida and Waldomiro de L. e Silva assisted in the field. Alessandro P. Nunes and Fernando Tizianel helped us with the taxonomic identification of birds. Luiz Gustavo R. O. Santos and Carlos A. Zucco helped with data analysis.

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