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15 results for “mate recognition”
Data from: Species recognition limits mating between hybridizing ant species
<p><span>Identifying mechanisms limiting hybridization is a central goal of speciation research. Here, we studied pre-mating and post-mating barriers to hybridization between two ant species, <em>Formica selysi</em> and <em>Formica cinerea</em>. These species hybridize in the Rhône valley in Switzerland, where they form a mosaic hybrid zone, with limited introgression from <em>F. selysi</em> into <em>F</em>. <em>cinerea</em>. There was no sign of temporal isolation between the two species in the production of queens and males. With choice experiments, we showed that queens and males strongly prefer to mate with conspecifics. Yet we did not detect post-mating barriers caused by genetic incompatibilities. Specifically, hybrids of all sexes and castes were found in the field and F1 hybrid workers did not show reduced viability compared to non-hybrid workers. To gain insights into the cues involved in species recognition, we analyzed the cuticular hydrocarbons of queens, males and workers and staged dyadic encounters between workers. Cuticular hydrocarbon profiles differed markedly between species, but were similar in <em>F. cinerea</em> and hybrids. Accordingly, workers also discriminated species, but they did not discriminate <em>F. cinerea</em> and hybrids. We discuss how the CHC-based recognition system of ants may facilitate the establishment of pre-mating barriers to hybridization, independent of hybridization costs.</span></p>
Data from: Female mate preferences on high dimensional shape variation for male species recognition traits
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Data from: Species recognition limits mating between hybridizing ant species
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Figure 3 in Antennae and the role of olfaction and contact stimulation in mate recognition by males of the pollinating fig wasp Ceratosolen gravelyi (Hymenoptera: Agaonidae)
Figure 3. Micrographs of the antennae and chemosensory sensilla of male Ceratosolen gravelyi. (a) Scanning electron micrograph of the head and antennae, showing an exposed area of the 2nd–3rd flagellomeres (F2–F3). (b) Scanning electron micrographs of an excised antenna, showing the scape (Sc), pedicel (Pe) and flagellum (F). (c) High magnification image of the terminal flagellomere (the 3rd flagellomere, F3) showing the three types of chemoreception sensilla: multiporous plate sensilla (MPS) and basiconic sensilla types 1 (BS-1) and 2 (BS-2). Note the terminal indentation (De) in the BS on the insets in the lower left corner. (d) Longitudinal section of a multiporous plate sensillum showing dendritic branches (DB) running parallel to the sensillar lymph (SL) and ending with cuticular pores (Po) at the sensillum surface. (e) Longitudinal section of the basal area of a basiconic sensilla type 1 inserted into a socket surrounded by a raised cuticular ring (CR). (f) Longitudinal section of the basal area of a basiconic sensilla type 2. (g–i) Cross-sections of a multiporous plate sensillum and basiconic sensilla types 1 and 2. The sensillar wall (SW) of BS-1 and BS-2 is non-porous at this level.
Data from: Phenotypic plasticity of mate recognition systems prevents sexual interference between two sympatric leaf beetle species
Maladaptive sexual interactions among heterospecific individuals (sexual interference) can prevent the coexistence of animal species. Thus, the avoidance of sexual interference by divergence of mate recognition systems is crucial for a stable coexistence in sympatry. Mate recognition systems are thought to be under tight genetic control. However, we demonstrate that mate recognition systems of two closely related sympatric leaf beetle species show a high level of host-induced phenotypic plasticity. Mate choice in the mustard leaf beetles, Phaedon cochleariae and P. armoraciae, is mediated by cuticular hydrocarbons (CHCs). Divergent host plant use causes a divergence of CHC phenotypes, whereas similar host use leads to their convergence. Consequently, both species exhibit significant behavioral isolation when they feed on alternative host species, but mate randomly when using a common host. Thus, sexual interference between these syntopic leaf beetles is prevented by host-induced phenotypic plasticity rather than by genotypic divergence of mate recognition systems.
Data from: Plant odour and sex pheromone are integral elements of specific mate recognition in an insect herbivore
Specific mate recognition relies on the chemical senses in most animals, and especially in nocturnal insects. Two signal types mediate premating olfactory communication in terrestrial habitats: sex pheromones, which blend into an atmosphere of plant odorants. We show that host plant volatiles affect the perception of sex pheromone in males of the African cotton leafworm Spodoptera littoralis and that pheromone and plant volatiles are not perceived as independent messages. In clean air, S. littoralis males are attracted to single synthetic pheromone components or even the pheromone of a sibling species, Oriental cotton leafworm S. litura. Presence of host plant volatiles, however, reduces the male response to deficient or heterospecific pheromone signals. That plant cues enhance discrimination of sex pheromone quality confirms the idea that specific mate recognition in noctuid moths has evolved in concert with adaptation to host plants. Shifts in either female host preference or sex pheromone biosynthesis give rise to new communication channels that have the potential to initiate or contribute to reproductive isolation.
Data from: Plant odour and sex pheromone are integral elements of specific mate recognition in an insect herbivore
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Data from: The role of cuticular hydrocarbons in mate recognition in Drosophila suzukii
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Data from: Phenotypic plasticity of mate recognition systems prevents sexual interference between two sympatric leaf beetle species
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Molecular mechanism of flocculation self-recognition in yeast and its role in mating and survival
Saccharomyces cerevisiae flocculation occurs when fermentable sugars are limiting and is therefore considered as a way to enhance the survival chance of Flo-expressing yeast cells. In this paper the role of Flo1p in mating was demonstrated by showing that the mating efficiency which contributes to the increased survival rate as well by generating genetic variability is increased when cells flocculate. This was revealed by liquid growth experiments in a low shear environment and differential transcriptome analysis of FLO1 expressing cells compared to the non-flocculent wild-type cells. The results show that a floc provides a uniquely organized multicellular ultrastructure that provides a suitable microenvironment to induce and perform cell conjugation. S. cerevisiae strains BY4742 WT BY4742::FLO8 and BY4742 [FLO1] were grown in microgravity and 1-g. A transcriptomic analysis was performed and the transcriptome data were integrated with the high quality protein-protein interaction networks. The identified high score sub-networks (qvalue < 0.001) were considered and further evaluated concerning their GO enrichment using a hypogeometric test. The data were from the Ying B-1 experiment.
Figure 2 in Antennae and the role of olfaction and contact stimulation in mate recognition by males of the pollinating fig wasp Ceratosolen gravelyi (Hymenoptera: Agaonidae)
Figure 2. Choice experiment with male Ceratosolen gravelyi responding to cues from different types of galls (a) and wasps (b) as well as insect extracts (c). WG, washed galls; FCG, female-containing galls; MCG, male-containing galls; WF, washed females; MF, mated females; VF, virgin females; WGS, washed galls covered with solvent; FGE, female-containing gall extracts; FE, female extracts. Males that did not respond within 5 min were excluded from the chi-square test. The number following the abbreviation indicates the percentage of times that each side was chosen. NC = no choice, n.s = non-significant difference (p> 0.05), * p <0.05, ** p <0.01, *** p <0.001, N indicates the total number of the tested wasps.
Molecular mechanism of flocculation self-recognition in yeast and its role in mating and survival
GEO Series GSE64468. Saccharomyces cerevisiae; Schizosaccharomyces pombe. 17 samples. Type: Expression profiling by array.
Molecular mechanism of flocculation self-recognition in yeast and its role in mating and survival
Saccharomyces cerevisiae flocculation occurs when fermentable sugars are limiting and is therefore considered as a way to enhance the survival chance of Flo-expressing yeast cells. In this paper the role of Flo1p in mating was demonstrated by showing that the mating efficiency which contributes to the increased survival rate as well by generating genetic variability is increased when cells flocculate. This was revealed by liquid growth experiments in a low shear environment and differential transcriptome analysis of FLO1 expressing cells compared to the non-flocculent wild-type cells. The results show that a floc provides a uniquely organized multicellular ultrastructure that provides a suitable microenvironment to induce and perform cell conjugation. S. cerevisiae strains BY4742 WT BY4742::FLO8 and BY4742 [FLO1] were grown in microgravity and 1-g. A transcriptomic analysis was performed and the transcriptome data were integrated with the high quality protein-protein interaction networks. The identified high score sub-networks (qvalue < 0.001) were considered and further evaluated concerning their GO enrichment using a hypogeometric test.
Kin recognition: neurogenomic response to sib mating avoidance in a parasitic wasp
GEO Series GSE124129. Venturia canescens. 18 samples. Type: Expression profiling by high throughput sequencing.
Figure 1 in Antennae and the role of olfaction and contact stimulation in mate recognition by males of the pollinating fig wasp Ceratosolen gravelyi (Hymenoptera: Agaonidae)
Figure 1. Duration of male Ceratosolen gravelyi copulation events with a single female.
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Allen Brain Atlas
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