Genetic architecture of prezygotic reproductive isolation in the parasitic wasp genus Nasonia

Wenwen Diao

Genetic architecture of prezygotic reproductive isolation in the parasitic wasp genus Nasonia

Vertaalde titel van de bijdrage: Genetische architectuur van prezygotische reproductieve isolatie in het parasitaire wesp genus Nasonia

Wenwen Diao

Beukeboom lab - Evolutionary Genetics

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Samenvatting

Mijn proefschrift draagt bij aan de kennis over evolutie van reproductieve isolatie. Dit is een belangrijk vraagstuk in studies aan soortvorming. Ik heb de vraag gesteld hoe reproductieve isolatie barrières kunnen ontstaan met de nadruk op de rol van paringsgedrag en feromonen in seksuele isolatie en soortherkenning. Hiervoor heb ik het model systeem van Nasonia parasitaire wespen gebruikt dat bestaat uit 4 soorten, N. vitripennis, N. longicornis, N. giraulti en N. oneida, die verschillen in mate van prezygotische isolatie. Deze soorten vertonen verschillen in paringsgedrag (baltsgedrag en baltslied) en chemische communicatie signalen (seksferomonen en cuticulaire koolwaterstoffen). Ik beschrijf voor het eerst het paringsgedrag van N. oneida en geef gedetailleerde beschrijvingen van de baltsgeluiden van alle Nasonia soorten. Europese populaties van N. vitripennis vertoonden geografische variatie in baltsgedrag en cuticulaire koolwaterstoffen die deels van de breedtegraad afhingen. De genetische basis van mannelijke en vrouwelijke paringssignalen heb ik onderzocht met een Kwantitatieve Eigenschap Locus (QTL) analyse met nucleotide polymorfieën (SNPs) markers in neutrale DNA sequenties en kandidaatgenen. Kwantitatieve verschillen in mannelijke seksferomonen en baltsgedrag hadden effect op vrouwelijke ontvankelijkheid. Vrouwelijke keuze wordt mogelijk beïnvloedt door meerdere genen en sterke omgevingseffecten aangezien hiervoor geen duidelijke genomische regios gedetecteerd werden in mijn QTL studies.

Vertaalde titel van de bijdrage	Genetische architectuur van prezygotische reproductieve isolatie in het parasitaire wesp genus Nasonia
Originele taal-2	English
Kwalificatie	Doctor of Philosophy
Toekennende instantie	Rijksuniversiteit Groningen
Begeleider(s)/adviseur	Beukeboom, Leo, Supervisor Jacobus Mgn Van De Zande, Louis, Co-supervisor
Datum van toekenning	28-nov.-2017
Plaats van publicatie	[Groningen]
Uitgever	University of Groningen
Gedrukte ISBN's	978-94-034-0120-1
Elektronische ISBN's	978-94-034-0119-5
Status	Published - 2017

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Title and contentsFinal publisher's version, 1,27 MB
Chapter 1Final publisher's version, 781 KB
Chapter 2Final publisher's version, 891 KB
Chapter 3Final publisher's version, 1,25 MB
Chapter 4Final publisher's version, 1,54 MB
Chapter 5Final publisher's version, 2,13 MB
Chapter 6Final publisher's version, 1,38 MB
Chapter 7Final publisher's version, 803 KB
BibliographyFinal publisher's version, 720 KB
English summaryFinal publisher's version, 640 KB
Dutch summaryFinal publisher's version, 635 KB
List of publicationsFinal publisher's version, 625 KB
AcknowledgementsFinal publisher's version, 644 KB
Complete ThesisFinal publisher's version, 5,06 MB
PropositionsFinal publisher's version, 1,1 MB

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title = "Genetic architecture of prezygotic reproductive isolation in the parasitic wasp genus Nasonia",

abstract = "My thesis contributes to the understanding of the evolution of reproductive isolation which is an important topic in speciation biology. I have investigated how reproductive isolation barriers become established with a focus on the role of mating behaviour and pheromones in sexual isolation and species recognition. I used the model system of Nasonia parasitoid wasps with four species, N. vitripennis, N. longicornis, N. giraulti, and N. oneida, that differ in degrees of prezygotic isolation. These species show intraspecific and interspecific variation in mating behaviour (courtship behaviour and courtship song) and chemical communication signals (sex pheromones and cuticular hydrocarbons). I for the first time described the mating behaviour of N. oneida, and provided detailed descriptions of male courtship song for all four Nasonia species. European populations of N. vitripennis showed geographical variation in courtship traits and cuticular hydrocarbon profiles that was partly correlated with latitude. The genetic basis of male and female mating signals was investigated with quantitative trait locus (QTL) analysis of a cross between N. giraulti and N. oneida using neutral and candidate gene single nucleotide polymorphism (SNP) markers. It demonstrated quantitative differences in male sex pheromones and male mating behaviour between the species that affect female receptivity. Lack of female interspecific mate discrimination QTL pointed at a polygenetic basis for female choice with strong environmental effects.",

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N2 - My thesis contributes to the understanding of the evolution of reproductive isolation which is an important topic in speciation biology. I have investigated how reproductive isolation barriers become established with a focus on the role of mating behaviour and pheromones in sexual isolation and species recognition. I used the model system of Nasonia parasitoid wasps with four species, N. vitripennis, N. longicornis, N. giraulti, and N. oneida, that differ in degrees of prezygotic isolation. These species show intraspecific and interspecific variation in mating behaviour (courtship behaviour and courtship song) and chemical communication signals (sex pheromones and cuticular hydrocarbons). I for the first time described the mating behaviour of N. oneida, and provided detailed descriptions of male courtship song for all four Nasonia species. European populations of N. vitripennis showed geographical variation in courtship traits and cuticular hydrocarbon profiles that was partly correlated with latitude. The genetic basis of male and female mating signals was investigated with quantitative trait locus (QTL) analysis of a cross between N. giraulti and N. oneida using neutral and candidate gene single nucleotide polymorphism (SNP) markers. It demonstrated quantitative differences in male sex pheromones and male mating behaviour between the species that affect female receptivity. Lack of female interspecific mate discrimination QTL pointed at a polygenetic basis for female choice with strong environmental effects.

AB - My thesis contributes to the understanding of the evolution of reproductive isolation which is an important topic in speciation biology. I have investigated how reproductive isolation barriers become established with a focus on the role of mating behaviour and pheromones in sexual isolation and species recognition. I used the model system of Nasonia parasitoid wasps with four species, N. vitripennis, N. longicornis, N. giraulti, and N. oneida, that differ in degrees of prezygotic isolation. These species show intraspecific and interspecific variation in mating behaviour (courtship behaviour and courtship song) and chemical communication signals (sex pheromones and cuticular hydrocarbons). I for the first time described the mating behaviour of N. oneida, and provided detailed descriptions of male courtship song for all four Nasonia species. European populations of N. vitripennis showed geographical variation in courtship traits and cuticular hydrocarbon profiles that was partly correlated with latitude. The genetic basis of male and female mating signals was investigated with quantitative trait locus (QTL) analysis of a cross between N. giraulti and N. oneida using neutral and candidate gene single nucleotide polymorphism (SNP) markers. It demonstrated quantitative differences in male sex pheromones and male mating behaviour between the species that affect female receptivity. Lack of female interspecific mate discrimination QTL pointed at a polygenetic basis for female choice with strong environmental effects.

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