Gruesome twosome kukri rippers: Oligodon formosanus (Günther, 1872) and O. fasciolatus (Günther, 1864) eat Kaloula pulchra Gray, 1831 either by eviscerating or swallowing whole
| Autor: | Maneerat Suthanthangjai, Henrik Bringsøe, Jo Lodder, Winai Suthanthangjai, Navapol Komanasin |
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| Rok vydání: | 2021 |
| Předmět: |
Reptilia
Oligodon Kaloula pulchra posterior maxillary teeth Oligodon formosanus Zoology Predation Amphibia Body axis Squamata Animalia Kaloula Chordata rotational feeding Ecology Evolution Behavior and Systematics biology Colubridae Microhylidae Thailand biology.organism_classification behaviour death roll QL1-991 Hong Kong Animal Science and Zoology Anura |
| Zdroj: | Herpetozoa, Vol 34, Iss, Pp 49-55 (2021) Herpetozoa 34: 49-55 |
| ISSN: | 2682-955X 1013-4425 |
| DOI: | 10.3897/herpetozoa.34.e62688 |
| Popis: | Predation on adult microhylid frogs Kaloula pulchra by two closely-related colubrid snakes is described, based on two observations of Oligodon formosanus in Hong Kong and one observation of O. fasciolatus in Thailand. In two instances, O. formosanus was observed cutting open the abdomen of this anuran species. In one case, it performed repeated rotations about its own longitudinal body axis (“death roll”) while its head was inserted into the frog’s abdomen. The purpose of this behaviour was probably to tear off organs and swallow them. Once O. fasciolatus was observed catching and swallowing K. pulchra whole. In that case, the snake also made a series of rotations while it maintained its firm grip in the frog’s belly. It is concluded that, for these two closely-related kukri snakes, prey size is crucial for determining whether the gape width allows large preys to be swallowed entire. |
| Databáze: | OpenAIRE |
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