Data from: Linking intra- and interspecific assortative mating: consequences for asymmetric sexual isolation

• Main Authors: Svensson, Erik I., Nordén, Anna, Waller, John T., Runemark, Anna
• Format: Dataset
• Language: unknown
• Published: Dryad Digital Repository 2016
• Subjects: competition; Zygoptera; Anthropocene; Insecta; Calopteryx splendens; hybridization; reproductive isolation; Selection - Sexual; Calopteryx virgo; odonata; Behavior; Calopterygidae; speciation; Sweden; Fennoscandia; Europe; Western Palearctic; Life sciences; medicine and health care; envir; psy
• Online Access: https://doi.org/10.5061/dryad.782m8

Assortative mating is of interest because of its role in speciation and the maintenance of species boundaries. However, we know little about how within-species assortment is related to interspecific sexual isolation. Most previous studies of assortative mating have focused on a single trait in males and females, rather than utilizing multivariate trait information. Here we investigate how intraspecific assortative mating relates to sexual isolation in two sympatric and congeneric damselfly species (genus Calopteryx). We connect intraspecific assortment to interspecific sexual isolation by combining field observations, mate preference experiments and enforced copulation experiments. Using canonical correlation analysis, we demonstrate multivariate intraspecific assortment for body size and body shape. Males of the smaller species mate more frequently with heterospecific females than males of the larger species, which showed less attraction to small heterospecific females. Field experiments suggest that sexual isolation asymmetry is caused by male preferences for large heterospecific females, rather than by mechanical isolation due to interspecific size differences or female preferences for large males. Male preferences for large females and male-male competition for high quality females can therefore counteract sexual isolation. This sexual isolation asymmetry therefore indicates that sexual selection currently opposes a species boundary. Assortative mating data from "Klingavälsåns Naturreservat"Male and female mating couples and morphological data in mating pairs from "Klingavälsåns Naturreservat". Male and female ID:s and date of capture are given (male above the female he was mating with), and value for each of the eight measured morphological traits that we measured. These trait values were used to estimate the strength of assortative mating.AssortativeMatingCompletePairsKlingavalsan.csvAssortative mating data from "Sövdemölla"Male and female mating couples and morphological data in mating pairs from ...