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Method employed to study the diet of anuran amphibians larvae Ivana Pavignano Via San Carlo 8 - 10010 Piverone (Torino) - Italy. Faeces examination plays an important role in studies on vertebrate diets (Hairsten, 1964; Shoener, 1974). The study of diet composition in amphibians, adults (Ferri and Schiavo, 1988) and larvae (Diaz-Paniagua, 1985), can be of a special importance for the understanding of their ecology and evolution. Anuran tadpoles are generally phytophagous: their diet is mainly composed of algae, phanerogams and sometimes even detritus (Diaz-Paniagual 1985). Some differences exist, however, among species, possibly as a consequence of differences in habitat or microhabitat selection (Dfaz-Paniagua, 1987). Food availability exerts an important influence on tadpoles. The spatial distribution of food in a patchy environment can regulate relative growth rates (Seale and Wassersug, 1979; Seale and Beckvar, 1980; Wassersug, 1975) and is relevant to determine the final structures of adult com- munities. The diet of anuran larvae may be studied by microscopical examination of their in- testinal content without intestine removal. Fresh-captured larvae are put in separate Petri capsules, with a little of tap water (for smaller tadpoles Petri capsules of 5 cm diameter with 10 ml of water are used; for
Amphibia-Reptilia – Brill
Published: Jan 1, 1989
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