Auditory sensitivity of Hawaiian moths (Lepidoptera: Noctuidae) and selective predation by the Hawaiian hoary bat (Chiroptera: Lasiurus cinereus semotus).
AUTOR(ES)
Fullard, J H
RESUMO
The islands of Hawai'i offer a unique opportunity for studying the auditory ecology of moths and bats since this habitat has a single species of bat, the Hawaiian hoary bat (Lasiurus cinereus semotus), which exerts the entire predatory selection pressure on the ears of sympatric moths. I compared the moth wings discarded by foraging bats with the number of surviving moths on the island of Kaua'i and concluded that the endemic noctuid Haliophyle euclidias is more heavily preyed upon than similar-sized endemic (e.g. Agrotis diplosticta) and adventive (Agrotis ipsilon and Pseudaletia unipuncta) species. Electrophysiological examinations indicated that, compared with species less preyed upon, H. euclidias has lower auditory sensitivities to the bat's social and echolocation calls, which will result in shorter detection distances of the bat. The poor ears of H. euclidias suggest that this moth coevolved with the bat using non-auditory defences that resulted in auditory degeneration. This moth now suffers higher predation because it is drawn away from its normal habitat by the man-made lights that are exploited by the bat.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1088751Documentos Relacionados
- Predation rate of Spodoptera frugiperda (Lepidoptera: Noctuidae) larvae with and without defense by Podisus nigrispinus (Heteroptera: Pentatomidae)
- The population dynamics of three polyphagous owlet moths (Lepidoptera: Noctuidae) and the influence of meteorological factors and ENSO on them
- Chromosome studies of Brazilian vespertilionids Lasiurus cinereus and Lasiurus ega (Mammalia, Chiroptera)
- Resistência de Spodoptera frugiperda (Lepidoptera: Noctuidae) a spinosad no Brasil
- Reproductive behavior and sex pheromone identification of Pseudaletia sequax (Lepidoptera: Noctuidae)