Data for: Surviving the serenade: how conflicting selection pressures shape the early stages of sexual signal diversification
Data files
Mar 14, 2024 version files 25.42 KB
Abstract
Understanding how the early stages of sexual signal diversification proceed is critically important because these microevolutionary dynamics directly shape species trajectories and impact macroevolutionary patterns. Unfortunately, studying this is challenging because signals involve complex interactions between behavior, morphology, and physiology, much of which can only be measured in real time. In Hawaii, male Pacific field cricket song attracts both females and a deadly parasitoid fly. Over the past two decades, there has been a marked increase in signal variation in Hawaiian populations of these crickets, including novel male morphs with distinct mating songs. We capitalize on this rare opportunity to track changes in morph composition over time in a population with three novel morphs, investigating how mate and parasitoid attraction (components of sexual and natural selection) may shape signal evolution. We find dramatic fluctuation in morph proportions over the three years of the study, including the arrival and rapid increase of one novel morph. Natural and sexual selection pressures act differently among morphs, with some more attractive to mates and others more protected from parasitism. Collectively, our results suggest that differential protection from parasitism among morphs, rather than mate attraction, aligns with recent patterns of phenotypic change in the wild.
README: README for data files accompanying Gallagher et al. (2024) “Surviving the serenade: how conflicting selection pressures shape the early stages of sexual signal diversification”
Data File #1: song_analysis.csv
A data frame with calling song data from field-collected male Teleogryllus oceanicus crickets of different morphs. Data include unique male ID, morph, and two analyzed song characteristics.
Description of the data and file structure
Descriptions of column names:
male_ID: unique male identifier.
morph: discrete male morph.
dominant_frequency: frequency (in Hz) with the greatest acoustic power.
amplitude: amplitude ratio (relative to background noise).
Data File #2: morph_proportions_over_time.csv
A data frame with male morph proportion data from field-sampled Teleogryllus oceanicus crickets from the first and last points of the study: 1 and 5. Compared using a Fisher's exact test.
Description of the data and file structure
Descriptions of column names:
timepoint: the time point sampled (1 or 5).
ancestral: the number of ancestral males sampled during that time point.
rattling: the number of rattling males sampled during that time point.
smallwing: the number of smallwing males sampled during that time point.
curlywing: the number of curlywing males sampled during that time point.
Data File #3: long_distance_mate_attraction_4way.csv
A data frame with four-way long-distance calling song mate choice data from Teleogryllus oceanicus, used to measure the morph preferences of female crickets. These trials included "ancestral" song in four-way simultaneous trials.
Description of the data and file structure
Descriptions of column names:
female_ID: unique female identifier.
morph_choice: the morph that the female first contacted (chose).
Data File #4: long_distance_mate_attraction_2way.csv
A data frame with two-way long-distance calling song mate choice data from Teleogryllus oceanicus, used to measure the morph preferences of female crickets.
Description of the data and file structure
Descriptions of column names:
femaleID: unique female identifier.
song_a: the morph calling song played from speaker "a" during that trial.
song_b: the morph calling song played from speaker "b" during that trial.
morph_chosen_contact: the morph that the female first contacted (chose). If the female did not contact a speaker during the trial, this is left blank (cell is empty).
morph_chosen_time: the morph that the female spent more time near. If the female did not spend any time near the speaker during the trial, this is left blank.
trial_format: whether the trial consisted of two competing songs (competitive) or one song vs silence (solo).
Data File #5: short_distance_mate_attraction.csv
A data frame with short-distance courtship mate choice data from Teleogryllus oceanicus, used to measure the morph preferences of female crickets.
Description of the data and file structure
Descriptions of column names:
Male ID: unique male identifier.
male_morph: the male's morph.
femaleID: unique female identifier.
mount.y.n: whether the female mounted the male.
time_until_mount_after_stridulation: the time in seconds that it took for the female to mount the male after he began courting (stridulating). If the female did not mount the male during the trial, this is left blank (cell is empty).
Data File #6: long_distance_fly_attraction_squares.csv
A data frame with long-distance fly trapping data, collected using traps broadcasting various Teleogryllus oceanicus morph calling songs in the field, used to measure the morph preferences of the parasitoid fly, Ormia ochracea. Each row indicates an individual trap broadcasting a particular song loop. This experiment contained a "square" of traps playing ancestral, rattling, smallwing, and curlywing songs.
Description of the data and file structure
Descriptions of column names:
morph: the calling song loop broadcast from that trap.
flies_caught: the number of flies caught in that trap.
Data File #7: long_distance_fly_attraction_triangles.csv
A data frame with long-distance fly trapping data, collected using traps broadcasting various Teleogryllus oceanicus morph calling songs in the field, used to measure the morph preferences of the parasitoid fly, Ormia ochracea. Each row indicates an individual trap broadcasting a particular song loop. This experiment contained a "triangle" of traps playing rattling, smallwing, and curlywing songs.
Description of the data and file structure
Descriptions of column names:
morph: the calling song loop broadcast from that trap.
flies_caught: the number of flies caught in that trap.
Data File #8: short_distance_fly_attraction.csv
A data frame with short-distance fly attraction data to various cricket (Teleogryllus oceanicus) morph songs, used to measure the morph preferences of the parasitoid fly, Ormia ochracea, at short-distances.
Description of the data and file structure
Descriptions of column names:
numID: unique fly identifier.
method: whether a purring song was included in the series of stimuli played for that individual fly (it didn't matter statistically so was excluded from the final model).
song: the stimulus played during that trial.
distance: the distance traveled (in cm) from the top to the bottom of the arena (max = 58).
contact: whether the fly contacted the speaker during the trial.
Data File #9: morph_proportions_lab_vs_field.csv
A data frame with sampled male morph counts of Teleogryllus oceanicus, including time points 4 and 5 in the field, and time point 5 in the lab. Used to compare how morph composition changed between field and lab generations.
Description of the data and file structure
Descriptions of column names:
timepoint_rearing: the time point (4 or 5) and rearing condition (field or lab).
ancestral: the number of ancestral males sampled during that time point.
rattling: the number of rattling males sampled during that time point.
smallwing: the number of smallwing males sampled during that time point.
curlywing: the number of curlywing males sampled during that time point.
R code file: long_distance_cricket_phonotaxis_code.Rmd
An R script for comparing female Teleogryllus oceanicus cricket attraction to the calling songs of various male morphs. Used to analyze the data in data file #4: long_distance_mate_attraction_2way.csv