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Genetic architecture of male courtship behavior differences in the parasitoid wasp genus Nasonia (Hymenoptera; Pteromalidae)
- Publication Year :
- 2019
- Publisher :
- Cold Spring Harbor Laboratory, 2019.
-
Abstract
- Very little is known about the genetic basis of behavioral variation in courtship behavior, which can contribute to speciation by prezygotic isolation of closely related species. Here, we analyze the genetic basis and architecture of species differences in the male courtship behavior of two closely related parasitoid waspsNasonia vitripennisandN. longicornis.Both species occur microsympatrically in parts of their ranges and have been found in the same host pupae. Despite strong postzygotic isolation mechanisms between these twoNasoniaspecies, viable hybrid females can be produced in the laboratory if both species are cured of theirWolbachiaendosymbionts. We used haploid F2hybrid males derived from virgin F1hybrid females of two independent mapping populations to study the genetic architecture of five quantitative and two qualitative components of their courtship behavior. A total of 14 independent Quantitative Trait Loci (QTL) were found in the first mapping population (320 males), which explained 4-25% of the observed phenotypic variance. Ten of these QTL were confirmed by a second independent mapping population (112 males) and no additional ones were found. A genome-wide scan for two-loci interactions revealed many unique but mostly additive interactions explaining an additional proportion of the observed phenotypic variance. Courtship QTL were found on all five chromosomes and four loci were associated with more than one QTL, indicating either possible pleiotropic effects of individual QTL or individual loci contributing to multiple courtship components. Our results indicate that these two evolutionary young species have rapidly evolved multiple significant phenotypic differences in their courtship behavior that have a polygenic and highly interactive genetic architecture. Based on the location of the QTL and the publishedNasoniagenome sequence we were able to identify a series of candidate genes for further study.
- Subjects :
- 0106 biological sciences
0303 health sciences
education.field_of_study
Courtship display
media_common.quotation_subject
Population
fungi
Reproductive isolation
Quantitative trait locus
Biology
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Genetic architecture
Nasonia vitripennis
Courtship
03 medical and health sciences
Evolutionary biology
Nasonia
education
030304 developmental biology
media_common
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....eb63a72b80101c8d9fba56da3fc605e9
- Full Text :
- https://doi.org/10.1101/831735