DOI: 10.5061/dryad.vr3h0
title: Data from: Rapid diversification of sexual signals in Hawaiian Nesosydne planthoppers (Hemiptera: Delphacidae): the relative role of neutral and selective forces

description: Changes in sexual signals have the potential to promote rapid divergence
 and reproductive isolation among populations of animals. Thus, identifying
 processes contributing to variation in signals is key to understanding the
 drivers of speciation. However, it is difficult to identify the processes
 initiating changes in signals in empirical systems because (1) the
 demographic history of populations under study is usually unclear, and (2)
 there is no unified hypothesis-testing framework for evaluating the
 simultaneous contribution of multiple processes. A unique system for study
 in the Hawaiian Islands, the planthopper species Nesosydne chambersi,
 offers a clear demographic context to disentangle these factors. By
 measuring variation in male vibratory sexual signals across different
 genetic populations on the island of Hawaii, we found that that multiple
 signal traits varied significantly between populations. We developed a
 mixed modelling framework to simultaneously test competing hypotheses
 about which processes contribute to changes in signal traits: genetic
 drift, sensory drive or reproductive character displacement. Our findings
 suggest that signal divergence proceeds along different axes for different
 signal traits under the influence of both neutral and selective processes.
 They are the first, to our knowledge, to document the relative importance
 of multiple processes on divergence in sexual signals.
description: Temporal signal traits
 of planthopper male sexual signalsThese are attributes of
 planthopper male sexual signals collected from the island of Hawaii in a
 field laboratory using a laser vibrometer and an accelerometer. This file,
 "PatternElements.csv" , describes five signal characteristics:
 Inter-pulse Interval, Whir Length, Fast Pulse Rate, Slow Pulse Rate, and
 Ratio of Signals per Bout to the Interval between bouts. Please see the
 publication for a detailed description of how these data were recorded and
 scored, and Figure 1 within the publication for a graphical description of
 the characters. Signal characters with a "_corr" after their
 names indicates the that these signal traits were correlated to
 temperature in the original recording and and these columns represent the
 corrected data.PatternElements.csvThe signal trait "fundamental frequency" of planthopper male sexual signalsThese recordings of planthopper male sexual signals were collected from the island of Hawaii in a field laboratory using a laser vibrometer and an accelerometer. This file, "FundamentalFreq.csv" , describes one signal characteristic: fundamental frequency. Please see the publication for a detailed description of how these data were recorded and scored, and Figure 1 within the publication for a graphical description of the character. The column "fund_corr" indicates the that this signal trait was correlated to temperature in the original recording and and this column represents the corrected data.FundamentalFreq.csvThe signal trait "dominant frequency" of planthopper male sexual signalsThese recordings of planthopper male sexual signals were collected from the island of Hawaii in a field laboratory using a laser vibrometer and an accelerometer. This file, "DominantFreq.csv", describes one signal characteristic: dominant frequency. Please see the publication for a detailed description of how these data were recorded and scored, and Figure 1 within the publication for a graphical description of the character.DominantFreq.csv