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Kin recognition: neurogenomic response to sib mating avoidance in a parasitic wasp

ABSTRACT: Kin recognition: neurogenomic response to sib mating avoidance in a parasitic wasp

PROVIDER: PRJNA510817 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8354700_1.fastq.gz	Fastqsanger.gz
	SRR8354700_2.fastq.gz	Fastqsanger.gz
	SRR8354710_1.fastq.gz	Fastqsanger.gz
	SRR8354710_2.fastq.gz	Fastqsanger.gz
	SRR8354701_1.fastq.gz	Fastqsanger.gz

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Kin recognition: neurogenomic response to sib mating avoidance in a parasitic wasp

Project description:Sib mating increase homozygosity and can lead to inbreeding depression. Selective pressures have favored the evolution of kin recognition and sib avoidance in mate choice. Such avoidance behavior has been recorded in the parasitoid wasp Venturia canescens where the sex determining system (single-locus complementary sex determination, sl-csd) introduces an extra short-term cost to inbreeding; females preferentially mate with unrelated males. The genetics underlying mate choice of females and kin recognition remains largely unexplored. Here we analyzed the head transcriptomic changes after exposure to distinct stimulus: courtship by unrelated male or courtship by brother, while transcriptome of females alone was used as control. Our results demonstrate that male courtship provokes a major transcriptome reprogramming in females heads. The transcriptomic response is highly dependent on the compatibility of the courting male. We subdivided the socially responsive genes using an integrative gene network analysis, we highlighted genes regulated by courtship, whatever the relatedness of the courting male. We also showed that the regulation of some peculiar group of genes is very specific of compatible male courtship, while others are regulated only by incompatible male courtship. We suggest that those different transcriptomic responses lead to mating decision or sib mating avoidance behavior observed in this species.

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Kin recognition: Neurogenomic response to mate choice and sib mating avoidance in a parasitic wasp.

Project description:Sib mating increases homozygosity, which therefore increases the risk of inbreeding depression. Selective pressures have favoured the evolution of kin recognition and avoidance of sib mating in numerous species, including the parasitoid wasp Venturia canescens. We studied the female neurogenomic response associated with sib mating avoidance after females were exposed to courtship displays by i) unrelated males or ii) related males or iii) no courtship (controls). First, by comparing the transcriptional responses of females exposed to courtship displays to those exposed to controls, we saw a rapid and extensive transcriptional shift consistent with social environment. Second, by comparing the transcriptional responses of females exposed to courtship by related to those exposed to unrelated males, we characterized distinct and repeatable transcriptomic patterns that correlated with the relatedness of the courting male. Network analysis revealed 3 modules of specific 'sib-responsive' genes that were distinct from other 'courtship-responsive' modules. Therefore, specific neurogenomic states with characteristic brain transcriptomes associated with different behavioural responses affect sib mating avoidance behaviour.

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