DOI: 10.5061/dryad.8vd762q
title: Data from: An innovative ovipositor for niche exploitation impacts genital coevolution between sexes in a fruit-damaging drosophila

description: Limited attention has been given to ecological factors influencing the
 coevolution of male and female genitalia. The innovative ovipositor of
 Drosophila suzukii, an invading fruit pest, represents an appealing case
 to document this phenomenon. The serrated saw-like ovipositor is used to
 pierce the hard skin of ripening fruits that are not used by other fruit
 flies that prefer soft decaying fruits. Here, we highlight another
 function of the ovipositor related to its involvement in genital coupling
 during copulation. We compared the morphology and coupling of male and
 female genitalia in this species to its sibling species, D. subpulchrella,
 and to an outgroup species, D. biarmipes. These comparisons and a surgical
 manipulation indicated that the shape of male genitalia in D. suzukii has
 had to be adjusted to ensure tight coupling, despite having to abandon the
 use of a hook-like structure, paramere, because of the more linearly
 elongated ovipositor. This phenomenon demonstrates that ecological niche
 exploitation can directly affect the mechanics of genital coupling, and
 potentially cause incompatibility among divergent forms. This model case
 provides new insights towards elucidating the importance of the dual
 functions of ovipositors in other insect species that potentially induce
 genital coevolution and ecological speciation.
description: Paramere
 images.zipContains image files
 used to perform elliptical Fourier analysis of the parameres in D. suzukii
 and D. subpulchrella.Video images of
 copulating Dsub_H243-1.zipContains video images (5
 frames per second TIFF images) of copulating individuals. Conspecific
 pairs of male and female Drosophila subpulchrella (H243)
 .Video images of
 copulating Dsub_H243-2.zipContains video images (5
 frames per second TIFF images) of copulating individuals. Conspecific
 pairs of male and female Drosophila subpulchrella (H243)
 .Video images of
 copulating Dsub_H243-3.zipContains video images (5
 frames per second TIFF images) of copulating individuals. Conspecific
 pairs of male and female Drosophila subpulchrella (H243)
 .Video images of
 copulating Dsuz_TMUS8-1.zipContains video images (5
 frames per second TIFF images) of copulating individuals. Conspecific
 pairs of male and female Drosophila suzukii (TMUS8) .Video images of
 copulating Dsuz_TMUS8-2.zipContains video images (5
 frames per second TIFF images) of copulating individuals. Conspecific
 pairs of male and female Drosophila suzukii (TMUS8) .Video images of
 copulating Dsuz_TMUS8-3.zipContains video images (5
 frames per second TIFF images) of copulating individuals. Conspecific
 pairs of male and female Drosophila suzukii (TMUS8) .Video images of
 copulating Dsub_H243xDsuz_TMUS8.zipContains video images (5
 frames per second TIFF images) of copulating individuals.Heterospecific
 pairs of Drosophila subpulchrella (H243) females and Drosophila suzukii
 (TMUS8) males.Video images of
 copulating Dsub_H243disruptedxDsub_H243.zipContains video images (5
 frames per second TIFF images) of copulating individuals.Conspecific pairs
 of disrupted Drosophila subpulchrella (H243) females (post-anal cuticle
 wounded) and intact D. subpulchrella (H243) males.Video images of copulating
 Dsub_H243_disruptedxDsub_H243.zipVideo images of copulating Dsuz_TMUS8disruptedxDsuz_TMUS8.zipContains video images (5 frames per second TIFF images) of copulating individuals. Conspecific pairs of disrupted Drosophila suzukii (TMUS8) females (post-anal cuticle wounded) and intact D. suzukii (TMUS8) males.Video images of copulating Dsuz_TMUS8_disruptedxDsuz_TMUS8.zipREAD MERead me file.