Prey processing in the Siamese fighting fish (Betta splendens)
| Autor: | Anthony Herrel, Renauld Boistel, Christopher P. J. Sanford, Nicolai Konow, Belma Krijestorac |
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| Přispěvatelé: | Institut International de Paléoprimatologie, Paléontologie Humaine : Evolution et Paléoenvironnement (IPHEP), Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers |
| Rok vydání: | 2013 |
| Předmět: |
0106 biological sciences
MESH: Biomechanical Phenomena Physiology Zoology MESH: Pharynx [SDV.BID]Life Sciences [q-bio]/Biodiversity 010603 evolutionary biology 01 natural sciences MESH: Predatory Behavior Predation 03 medical and health sciences Behavioral Neuroscience Animals MESH: Animals MESH: Jaw 14. Life underwater Ecology Evolution Behavior and Systematics 030304 developmental biology Trophic level 0303 health sciences Betta biology Ecology biology.organism_classification Biomechanical Phenomena Perciformes Jaw Nutritional physiology MESH: Perciformes Predatory Behavior Pharynx Fish Animal Science and Zoology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Betta splendens |
| Zdroj: | Journal of Comparative Physiology A Journal of Comparative Physiology A, Springer Verlag, 2013, 199 (7), pp.641-51. ⟨10.1007/s00359-013-0819-5⟩ |
| ISSN: | 1432-1351 0340-7594 |
| DOI: | 10.1007/s00359-013-0819-5 |
| Popis: | International audience; We studied prey processing in the Siamese fighting fish (Betta splendens), involving slow, easily observed head-bobbing movements, which were compared with prey processing in other aquatic feeding vertebrates. We hypothesized that head-bobbing is a unique prey-processing behaviour, which alternatively could be structurally and functionally analogous with raking in basal teleosts, or with pharyngognathy in neoteleosts. Modulation of head-bobbing was elicited by prey with different motility and toughness. Head-bobbing involved sustained mouth occlusion and pronounced cranial elevation, similar to raking. However, the hyoid and pectoral girdle were protracted, and not retracted as in both raking and pharyngognathy. High-speed videofluoroscopy of hyoid movements confirmed that head-bobbing differs from other known aquatic prey-processing behaviours. Nevertheless, head-bobbing and other prey-processing behaviours converge on a recurrent functional theme in the trophic ecology of aquatic feeding vertebrates; the use of intraoral and oropharyngeal dentition surfaces to immobilize, reduce and process relatively large, tough or motile prey. Prey processing outside the pharyngeal region has not been described for neoteleosts previously, but morphological evidence suggests that relatives of Betta might use similar processing behaviours. Thus, our results suggest that pharyngognathy did not out-compete ancestral prey-processing mechanisms completely during the evolution of neoteleosts. |
| Databáze: | OpenAIRE |
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