Larval Diets related to Morphological Characters of five Anuran Species in the Biological Reserve of Doñana (Huelva, Spain)

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Abstract
The diets of the larvae of five anuran species are described (Discoglossus pictus, Bufo calamita, Hyla meridionalis, Pelobates cultripes and Rana perezi). They all are basically composed of three abundant categories of food: algae, detritus and phanerogams. Other rarely encountered food categories are pollen, fungi, animals, bacteria and protozoa. A classification can be deduced by relating the use of the space in the ponds, diets and several morphological characters of larvae of each species: a) bottom-dwellers —tadpoles with a depressed body form which feed mainly on detritus — b) water column users — tadpoles with larger dorsal tail crests and tail surfaces which feed mainly on algae and phanerogams.

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