Drymarchon corais (Colubridae) and Caiman crocodilus (Alligatoridae) use different feeding behaviors to consume poisonous toads
Drymarchon corais and Caiman crocodilus are reported here using different feeding behaviors for consuming poisonous toads of the genus Rhinella (Bufonidae). Drymarchon corais was observed feeding on specimens of Rhinella diptycha without avoiding contact with the parotoid macroglands, suggesting tha...
Gespeichert in:
Veröffentlicht in: | Biotropica 2022-05, Vol.54 (3), p.566-570 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Drymarchon corais and Caiman crocodilus are reported here using different feeding behaviors for consuming poisonous toads of the genus Rhinella (Bufonidae). Drymarchon corais was observed feeding on specimens of Rhinella diptycha without avoiding contact with the parotoid macroglands, suggesting that this snake species is immune to toad toxins. Caiman crocodilus was recorded avoiding contact with the parotoid macroglands of specimens of Rhinella marina by consuming only the front and rear legs, suggesting that this caiman may be sensitive to toad toxins. Further experimental and field studies are needed to better understand the feeding behavior of D. corais and C. crocodilus and the effects of Rhinella toxins on these predators.
in Portuguese is available with online material.
Resumo
Drymarchon corais e Caiman crocodilus são relatados aqui usando diferentes comportamentos alimentares para consumir sapos venenosos do gênero Rhinella (Bufonidae). Espécimes de Drymarchon corais foram observados se alimentando de espécimes de Rhinella diptycha sem evitar o contato com as macroglândulas parotóides, sugerindo que esta espécie de serpente é imune a toxinas de sapos. Um espécime de Caiman crocodilus foi registrado evitando o contato com as macroglândulas parotóides de espécimes de Rhinella marina consumindo apenas as pernas dianteiras e traseiras, sugerindo que este jacaré pode ser sensível a toxinas de sapos. Mais estudos experimentais e de campo são necessários para melhor compreender o comportamento alimentar de D. corais e C. crocodilus, e os efeitos das toxinas das espécies de Rhinella sobre esses predadores.
Drymarchon corais and Caiman crocodilus use different feeding behaviors to consume on species of poisonous toads (Bufonidae). Drymarchon corais was observed feeding on specimens of Rhinella diptycha without avoiding contact with the parotoid macroglands, suggesting that this snake species is immune to toad toxins. Caiman crocodilus was recorded avoiding contact with the parotoid macroglands of specimens of Rhinella marina by consuming only the front and rear legs, suggesting that this caiman may be sensitive to toad toxins. |
---|---|
ISSN: | 0006-3606 1744-7429 |
DOI: | 10.1111/btp.13089 |