Absence of complementary sex determination in two Leptopilina species (Figitidae, Hymenoptera) and a reconsideration of its incompatibility with endosymbiont-induced thelytoky
| Autor: | Louis van de Zande, Leo W. Beukeboom, Elzemiek Geuverink, Martijn A. Schenkel, Fangying Chen |
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| Přispěvatelé: | Beukeboom lab, Van de Zande lab, Billeter lab, Pen group, Geuverink lab |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Male
Arrhenotoky food.ingredient Parthenogenesis Wasps haplodiploidy sex determination inbreeding Asexual reproduction Hymenoptera Haploidy Leptopilina General Biochemistry Genetics and Molecular Biology thelytoky Wolbachia bacteria food Animals Ecology Evolution Behavior and Systematics Asobara Genetics biology fungi biology.organism_classification Diploidy Insect Science Haplodiploidy Female Thelytoky Ploidy arrhenotoky Agronomy and Crop Science Wolbachia |
| Zdroj: | Insect Science, 29(3), 900-914. Wiley |
| ISSN: | 1672-9609 |
| Popis: | Complementary sex determination (CSD) is a widespread sex determination mechanism in haplodiploid Hymenoptera. Under CSD, sex is determined by the allelic state of one or multiple CSD loci. Heterozygosity at one or more loci leads to female development, whereas hemizygosity of haploid eggs and homozygosity of diploid eggs results in male development. Sexual (arrhenotokous) reproduction normally yields haploid male and diploid female offspring. Under asexual reproduction (thelytoky), diploidized unfertilized eggs develop into females. Thelytoky is often induced by bacterial endosymbionts that achieve egg diploidization by gamete duplication. As gamete duplication leads to complete homozygosity, endosymbiont-induced thelytokous reproduction is presumed to be incompatible with CSD, which relies on heterozygosity for female development. Previously, we excluded CSD in four Asobara (Braconidae) species and proposed a two-step mechanism for Wolbachia-induced thelytoky in Asobara japonica. Here, we conclusively reject CSD in two cynipid wasp species, Leptopilina heterotoma and Leptopilina clavipes. We further show that thelytoky in L. clavipes depends on Wolbachia titer but that diploidization and feminization steps cannot be separated, unlike in A. japonica. We discuss what these results reveal about the sex determination mechanism of L. clavipes and the presumed incompatibility between CSD and endosymbiont-induced thelytoky in the Hymenoptera. |
| Databáze: | OpenAIRE |
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