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Acta zoológica mexicana

On-line version ISSN 2448-8445Print version ISSN 0065-1737

Abstract

GUERRERO, Sergio; BADII, Mohammad H.; ZALAPA, Silvia S.  and  FLORES, Adriana E.. Dieta y nicho de alimentación del coyote, zorra gris, mapache y jaguarundi en un bosque tropical caducifolio de la costa sur del estado de Jalisco, México. Acta Zool. Mex [online]. 2002, n.86, pp.119-137. ISSN 2448-8445.

Food habits, niche breadth and niche overlap were analyzed for coyote (Canis latrans), gray fox (Urocyon cinereoargenteus), raccoon (Procyon lotor) and jaguarundi (Herpailurus yagouaroundi) in an area of dry forest located southern coast of the State of Jalisco, Mexico. We analyzed a total of 430 scats of the four species: coyote (118), gray fox (78), raccoon (198), and jaguarundi cat (36). The results are reported in relative frequency of occurrence (FRO). For the analysis of niche breadth, it was used the index of Levins, while the index of Renkonen was used in order to determined the niche overlap. The results showed that the vegetable food items was highest FRO for coyote (36.76%), gray fox (38.16%) and raccoon (47.62%). In the other hand, the mammals food items had the FRO highest for jaguarundi (43.37%). Other preys like insects, birds, crustaceans and fish supplemented the diet of these species in different proportions. Changes in the frequency of the food items utilized in the wet and dry seasons are reported per species. The niche was broad for the gray fox (15.32) and the coyote (14.95), and narrow for the raccoon (11.16) and the jaguarundi cat (4.46). However these results changed when the season of the year (dry-wet) was considered. The largest niche overlap was among coyote and gray fox (57.18%) and the smallest among raccoon and jaguarundi (19.95%). The coyote and jaguarundi cat showed the highest value of niche overlap in both dry season (58.26%) and wet season (49.48%).

Keywords : Carnivores; Food habits; niche breadth; niche overlap.

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