Abstract
Abstract Cannibalism provides a potential mechanism for enhanced growth and survival for species with complex lifecycles developing in habitats of unpredictable duration. We asked whether background resource quality affected survival and metamorphosis of Cuban Treefrog (Osteopilus septentrionalis) tadpoles fed conspecifics. In a factorial experiment, we crossed two levels of background resources, a high-quality (commercial rabbit chow) or low-quality (algae and periphyton) diet with no conspecifics, the presence of a dead conspecific (in a bag), or ad libitum availability of dead conspecifics. Survival of tadpoles did not differ significantly among treatments. Availability of conspecifics resulted in larger mass and decreased larval periods for tadpoles on low-quality background treatments; however, for tadpoles on high-quality background treatments, availability of conspecifics resulted in prolonged larval periods. These results suggest that profitability of feeding on conspecifics is dependent on backgr...
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