| Autor: |
Ramsauer N; Zoologisches Institut, Universität Zürich, Switzerland., Robert D |
| Jazyk: |
angličtina |
| Zdroj: |
Die Naturwissenschaften [Naturwissenschaften] 2000 Jul; Vol. 87 (7), pp. 315-9. |
| DOI: |
10.1007/s001140050729 |
| Abstrakt: |
The phonotactic capacity of tachinid flies to acoustically detect and localize a sound source simulating their cricket host was investigated in a large flight room. Acoustic measurements were performed to estimate the actual stimulus delivered to the flies, revealing highly heterogeneous sound fields. When presented with a simulated cricket song in red or infrared light conditions, the flies readily flew to the sound source and landed on it. Behavioural phonotactic thresholds were established as a function of carrier frequency and were found to coincide well with the frequency of the host's natural song (4.5-5.2 kHz). Experiments revealed that the same range of frequencies is preferentially attractive to the free-flying flies, and that the reliability of signal detection in the presence of noise is best at behaviourally relevant frequencies. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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