Data from: Temperature effects on interspecific eavesdropping in the wild
Data files
Oct 23, 2024 version files 87.51 KB
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EavesdroppingData_for_Dryad.xlsx
86.16 KB
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README.md
1.35 KB
Abstract
Mating signals are targets of conspecific signal recognition and sexual selection, but are also subject to abiotic temperature effects and to biotic interspecific eavesdroppers. In crickets, the male calling song becomes faster at warmer temperatures, and female crickets’ recognition of male song tracks temperature in a coordinated manner, termed ‘temperature coupling’. But female crickets are not the only ecologically relevant listeners: some cricket species are parasitized by Ormia ochracea, a parasitoid fly which finds its cricket hosts by eavesdropping on male cricket song. How temperature affects parasitoid fly phonotaxis to song is largely unexplored, with only one previous study conducted under field conditions. Here we explore six possible patterns of thermal effects on fly responses to cricket song, including temperature coupling, using field playbacks of synthetic Gryllus lineaticeps songs designed to be species-typical at various temperatures. We find that temperature does affect fly response, but that the temperature deviation of songs from ambient does not impact numbers of flies caught. We extend this finding by comparing the temperatures of the air and ground to show that temperature coupling is unlikely to be effective given microhabitat variation and differential rates of cooling in the evening hours when flies are most active. Our results can be interpreted more broadly to suggest temperature effects on intraspecific communication systems may be more tightly coupled than are effects on interspecific eavesdropping, and variation in thermal microhabitats in the field make it difficult to translate laboratory physiological responses to natural selection in the wild.
https://doi.org/10.5061/dryad.dncjsxm73
Description of the data and file structure
Files and variables
File: EavesdroppingData_for_Dryad.xlsx
Description: Playback Data
Variables
- Site - one of two unique locations, Las Virgenes (LV, 34.104, -118.711), and Cheesebro (CH, 34.150, -118.735).
- Night - each unique field collection event
- Year - 2020, or 2021
- Date - specific date of fieldwork
- Replicate - unique replicate of single complete trial
- Trial - within a given Night, trial 1, 2, or 3
- AmbientStart - temperature at start of 15 minute trial, in degrees C
- AmbientEnd - temperature at end of 15 minute trial, in degrees C
- AmbientPlay - baseline ambient temperature to assign playbacks, in degrees C
- Song - which song variant was played, in degrees C from AmbientPlay
- Flies - number of flies caught (response variable)
- AmbientMean - average of AmbientStart and AmbientEnd, in degrees C
- SongAdj - actual temperature deviation of Song from AmbientMean, in degrees C
- change in temp - difference between AmbientStart and AmbientEnd, in degrees C
Description: Air-Ground Temperature
Variables
Air Temperature, in degrees C
Ground Temperature, in degrees C
Data collected from field playback of cricket song to parasitoid flies. Data include field sampling information as well as numbers of flies attracted per playback.
Processing is minimal; raw data are presented. Basic functions (Mean, SD, MIN, MAX) calculated in Excel. Histogram and scatterplot from R.