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40 results for “post-mating”
Figure 9 in An imperfect imago? Post-mating loss of iridescent scales in Cheimas butterflies may change female from attractive to cryptic (Lepidoptera: Nymphalidae: Satyrinae)
Figure 9. Mating simulation experiment in Cheimas opalinus dominici. (a) Female hind wing mounted; (b) male hind wing mounted on the female hind wing; (c) male hind wing artificial movement over the female hind wing; (d) faded female dorsal hind wing after removing the male wing at the end of the experiment.
Figure 7 in An imperfect imago? Post-mating loss of iridescent scales in Cheimas butterflies may change female from attractive to cryptic (Lepidoptera: Nymphalidae: Satyrinae)
Figure 7. Scanning electron microscope photographs of Cheimas opalinus opalinus scales: (a) bluegreen (folded) and brown (flat) cover scales; (b) blue-green (folded) cover scales making up the hind wing dorsum structurally coloured patch; (c, d) microstructures of the blue-green colour-generating scale in two magnifications and different views, the periodicity of the cross ribs and the microribs on the side of the ridges are responsible; (e, f) female brown wing areas showing the scales of the hind wing dorsal surface (e) and the area of the blue patch after losing the blue colour-generating scales (f) (scale as indicated).
Figure 2 in An imperfect imago? Post-mating loss of iridescent scales in Cheimas butterflies may change female from attractive to cryptic (Lepidoptera: Nymphalidae: Satyrinae)
Figure 2. Young females of various subspecies of Cheimas opalinus (left column: virgin, right column: mated): (a, b) C. o. dominici (El Baho); (c, d) C. o. opalinus (El Potrero); (e, f) C. o. rosalinus (Paramo El Rosal).
Data from: Population density mediates the interaction between pre- and post-mating sexual selection
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Data from: Wolbachia and host intrinsic reproductive barriers contribute additively to post-mating isolation in spider mites
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Data from: The effects of synthetic estrogen exposure on pre-mating and post-mating episodes of selection in sex-role-reversed Gulf pipefish
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Data from: Multiple post-mating barriers to hybridisation in field crickets
Mechanisms that prevent different species from interbreeding are fundamental to the maintenance of biodiversity. Barriers to interspecific matings, such as failure to recognize a potential mate, are often relatively easy to identify. Those occurring after mating, such as differences in the how successful sperm are in competition for fertilisations, are cryptic and have the potential to create selection on females to mate multiply as a defence against maladaptive hybridization. Cryptic advantages to conspecific sperm may be very widespread and have been identified based on the observations of higher paternity of conspecifics in several species. However, a relationship between the fate of sperm from two species within the female and paternity has never been demonstrated. We use competitive microsatellite PCR to show that in two hybridising cricket species, Gryllus bimaculatus and G. campestris, sequential cryptic reproductive barriers are present. In competition with heterospecifics, more sperm from conspecific males is stored by females. Additionally, sperm from conspecific males has a higher fertilisation probability. This reveals that conspecific sperm precedence can occur through processes fundamentally under the control of females, providing avenues for females to evolve multiple mating as a defence against hybridization, with the counterintuitive outcome that promiscuity reinforces isolation and may promote speciation.
Data from: The relationship between post-mating reproductive isolation and reinforcement in Phlox
The process of speciation involves the accumulation of reproductive isolation (RI) between diverging lineages. Selection can favor increased RI via the process of reinforcement, whereby costs to hybridization impose selection for increased prezygotic RI. Reinforcement results in phenotypic divergence within at least one taxon, as a result of costly hybridization between sympatric taxa. The strength of selection driving reinforcement is determined by the cost of hybridization and the frequency of hybridization. We investigated the cost of hybridization by quantifying post-mating RI barriers among Phlox species that comprise one of the best-studied cases of reinforcement. We determined if the strength of RI differs among lineages that have and have not undergone reinforcement, how much variability there is within species in RI, and whether RI is associated with phylogenetic relatedness. We found high RI for the species that underwent phenotypic divergence due to reinforcement; however, RI was also high between other species pairs. We found extensive variability in RI among individuals within species, and no evidence that the strength of RI was associated with phylogenetic relatedness. We suggest that phenotypic divergence due to reinforcement is associated with the frequency of hybridization and introgression, and not the cost of hybridization in this clade.
Data from: The relationship between post-mating reproductive isolation and reinforcement in Phlox
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Data from: Multiple biological mechanisms result in correlations between pre- and post-mating traits that differ among versus within individuals and genotypes
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Data from: Divergence in sex peptide-mediated female post-mating responses in Drosophila melanogaster
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Data from: Variation in the post-mating fitness landscape in fruitflies
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Data from: Macronutrients and micronutrients drive trade-offs between male pre- and post-mating sexual traits
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Data from: Multiple post-mating barriers to hybridisation in field crickets
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Roles of female and male genotype in post-mating responses in Drosophila melanogaster
GEO Series GSE104706. Drosophila melanogaster. 90 samples. Type: Expression profiling by high throughput sequencing.
Seminal fluid components alone stimulate post-mating changes in honey bee queens (Apis mellifera)
GEO Series GSE145395. Apis mellifera carnica. 38 samples. Type: Expression profiling by high throughput sequencing.
Figure 1 in An imperfect imago? Post-mating loss of iridescent scales in Cheimas butterflies may change female from attractive to cryptic (Lepidoptera: Nymphalidae: Satyrinae)
Figure 1. Young males of various subspecies of Cheimas opalinus from various localities: (a) C. o. opalinus (La Culata); (b) C. o. opalinus (El Potrero); (c) C. o. cristalinus (Pico Tonojo); (d) C. o. cristalinus (Pico Tonojo); (e) C. opalinus cristalinus (Agua de Obispo); (f) C. opalinus iosephi (Quebrada El Cahote).
Regulation of Anopheles gambiae male accessory gland genes influences post-mating response in female
GEO Series GSE27233. Anopheles gambiae. 6 samples. Type: Expression profiling by array.
Post-mating expression of female D. melanogaster genomes experimentally evolved under different post-copulatory sexual selection regimes
GEO Series GSE30089. Drosophila melanogaster. 32 samples. Type: Expression profiling by array.
Post-mating expression of female Drosophila melanogaster genomes experimentally evolved under different post-copulatory sexual selection regimes
GEO Series GSE48385. Drosophila melanogaster. 32 samples. Type: Expression profiling by array.
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