The indestructible insect: Velvet ants from across the United States avoid predation by representatives from all major tetrapod clades
| Autor: | Kari L. Spivey, Edmund D. Brodie, Joseph S. Wilson, Trevor L. Chapman, Robert J. Delph, Brian G. Gall |
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| Přispěvatelé: | Wiley |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
media_common.quotation_subject Zoology Hymenoptera Insect Aposematism Alarm signal 010603 evolutionary biology 01 natural sciences Predation predator–prey Mutillidae Biology Predator Ecology Evolution Behavior and Systematics Nature and Landscape Conservation media_common Ecology biology Velvet biology.organism_classification antipredator 010602 entomology predator avoidance Animal Sciences |
| Zdroj: | Biology Faculty Publications |
| ISSN: | 2045-7758 |
| DOI: | 10.1002/ece3.4123 |
| Popis: | Velvet ants are a group of parasitic wasps that are well known for a suite of defensive adaptations including bright coloration and a formidable sting. While these adaptations are presumed to function in antipredator defense, observations between potential predators and this group are lacking. We conducted a series of experiments to determine the risk of velvet ants to a host of potential predators including amphibians, reptiles, birds, and small mammals. Velvet ants from across the United States were tested with predator’s representative of the velvet ants native range. All interactions between lizards, free-ranging birds, and a mole resulted in the velvet ants survival, and ultimate avoidance by the predator. Two shrews did injure a velvet ant, but this occurred only after multiple failed attacks. The only predator to successfully consume a velvet ant was a single American toad (Anaxyrus americanus). These results indicate that the suite of defenses possessed by velvet ants, including aposematic coloration, stridulations, a chemical alarm signal, a hard exoskeleton, and powerful sting are effective defenses against potential predators. Female velvet ants appear to be nearly impervious to predation by many species whose diet is heavily derived of invertebrate prey. |
| Databáze: | OpenAIRE |
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