Analysis of common toad trophic rhinella humboldti (Gallardo, 1965) associated systems in dry forest undergoing rural area Dibulla–Guajira

Abstract

The structure of the diet Rhinella humboldti (Anura Bufonidae) present in productive systems associated remnants of tropical dry forest occurs in the rural area of Dibulla, located in the southwest of the Sierra Nevada de Santa Marta - La Guajira. The samplings were conducted at 3 km from the county seat (11th 14'13,26 "North and 73 ° 18'28,21" West), from February to October 2012 in Palma and rice crops, livestock, roadside and dry forest. They were collected in both dry season and rainy season 70 adults of R. humboldti (Preserved in Alcohol-Formalin in the reference collection of the University of La Guajira) to which they extracted the gastrointestinal contents through dissection methodology abdominal, presenting a 80% (n = 56) stomach or intestinal contents. 13 families were identified corresponding to 6 orders (arthropods), as well as immature larvae and pupae, plant material, animal and mineral, corresponding to unidentifiable remains, obtaining a total of 18 prey items in the digestive tract of the species. Width of the dam, length of predator - - length of the dam, among other prey items most often given for the analysis of the data volume recording the dam width ratio of the mouth is recorded. R. humboldti introduced a diet with a marked tendency towards specialization by family Formicidae being the most representative and preferred by the species.