Diet of crab-eating fox (Cerdocyon thous) in two conservation units of the Amazon rainforest, Brazil.

Autor: Dutra-Vieira FM; Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP, Faculdade de Medicina Veterinária e Zootecnia, Programa de Pós-graduação em Animais Selvagens, Botucatu, SP, Brasil., Silva MS; Instituto Evandro Chagas, Programa de Pós-graduação em Epidemiologia e Vigilância em Saúde, Belém, PA, Brasil., Vieira GS; Instituto Federal do Pará, Marabá, PA, Brasil., Carvalho AS; Universidade Federal de Minas Gerais - UFMG, Instituto de Geociências, Belo Horizonte, MG, Brasil., Schimming BC; Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP, Faculdade de Medicina Veterinária e Zootecnia, Programa de Pós-graduação em Animais Selvagens, Botucatu, SP, Brasil.; Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP, Laboratório de Anatomia de Animais Selvagens, Botucatu, SP, Brasil.
Jazyk: angličtina
Zdroj: Brazilian journal of biology = Revista brasleira de biologia [Braz J Biol] 2021 Dec 20; Vol. 84, pp. e252093. Date of Electronic Publication: 2021 Dec 20 (Print Publication: 2021).
DOI: 10.1590/1519-6984.252093
Abstrakt: The present study aimed to evaluate the diet of the free-living crab-eating fox by identifying the stomach contents of the 17 crab-eating foxes (Cerdocyon thous) roadkilled in two conservation units, both located in the Amazon rainforest. The food items were quantified by frequency of occurrence (FO) and percentage of occurrence (PO). The stomach contents were analysed for dry matter (DM), crude protein (CP), crude fibre (CF), ether extract (EE), and mineral matter (MM). Nitrogen-free extractives (NFE), metabolisable energy (ME) values, as well as the energy need for maintenance were estimated. The composition of the diet for the crab-eating fox presented 29 food items from the different taxonomic groups, with a greater diversity of items of animal origin (n=22), although the highest frequency of occurrence was gramineae (Poaceae) (41.18%). Among the items of animal origin, 21% were mammals, 18% reptiles, 10% amphibians, 9% invertebrates and 3% birds. A high content of CF (62.76%) were determined. Nitrogen-free extractive and dry matter averages were 5.91% and 141.82 kcal/100g, respectively. The average maintenance energy was 447.01 kcal/day. These findings suggesting that the crab-eating foxes have a generalist diet with an omnivorous diet in the Amazon basin, feeding on gramineae, fruits, insects, snakes, amphibians, birds and small mammals and have the same feeding habit that present in other Brazilian biomes.
Databáze: MEDLINE