Frugivory and Seed Dispersal by Crocodilians: An Overlooked Form of Saurochory?

摘要: Saurochory (seed dispersal by reptiles) among crocodilians has largely been ignored, probably because these reptiles are generally assumed to be obligate carnivores incapable of digesting vegetable proteins and polysaccharides. Herein we review the literature on crocodilian diet, foraging ecology, digestive physiology movement patterns, provide additional empirical data from recent dietary studies Alligator mississippiensis. We found evidence frugivory in 13 18 (72.2%) species for which information was available, indicating this behavior is widespread Crocodylia. Thirty-four families 46 genera plants were consumed crocodilians. Fruit types varied widely; over half (52.1%) fleshy fruits. Some fruits as gastroliths or ingested incidental prey capture; however, there little doubt that occasion, fruit deliberately consumed, often large quantities. Sensory cues involved poorly understood, although airborne waterborne well surface disturbances seem important. Crocodilians likely accrue nutritional benefits no a priori reasons assume otherwise. Ingested seeds regurgitated, retained stomach indefinite lengthy periods, passed through tract excreted feces. Chemical mechanical scarification occurs stomach, but what effects processes have seed viability remain unknown. Because territories undertake movements, transported beyond parent plant before being voided. Little known about ultimate fate crocodilians; deposition sites could prove suitable germination. Although crocodilian-specific syndrome similar described other reptiles, our strongly suggests function effective agents dispersal. Crocodilian saurochory offers fertile ground future research.