Under arrhenotoky, unfertilized haploid eggs develop as males but under thelytoky they develop into diploid females after they have undergone diploidy restoration. In the parasitoid wasp Venturia canescens both reproductive modes occur. Thelytoky is genetically determined but the underlying genetics of diploidy restoration remain unknown. In this study we aim to identify the genes and/or proteins that control thelytoky. cDNA-amplified fragment length polymorphism (cDNA-AFLP) analysis of total ovarian RNA and two-dimensional protein electrophoresis in combination with mass spectrometry revealed putative transcripts and proteins involved in arrhenotokous and thelytokous development. The detected tubulin and actin protein differences are most likely functionally related to the two types of reproduction.
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http://dx.doi.org/10.1111/j.1365-2583.2009.00890.x | DOI Listing |
PLoS One
January 2025
Plant Breeding, Wageningen University and Research, Wageningen, The Netherlands.
Thrips tabaci is the main thrips species affecting onion and related species. It is a cryptic species complex comprising three phylogenetic groups characterized by different reproductive modes (thelytoky or arrhenotoky) and host plant specialization. Thrips tabaci populations vary widely in genetic diversity, raising questions about the factor(s) that drive this diversity.
View Article and Find Full Text PDFAn Acad Bras Cienc
September 2024
Universidade do Vale do Taquari - Univates, Laboratório de Acarologia, Avenida Avelino Tallini, 171, Universitário, 95914-014 Lajeado, RS, Brazil.
In this work we reported injuries caused by the spider mite Oligonychus yothersi on Vitis vinifera leaves and we also investigate the sex ratio of this species under laboratory conditions. To access the aspects regarding reproduction, females were placed individually in arenas made of V. vinifera leaves to oviposit and all progeny were mounted on slides when they reached adulthood to confirm the offspring sex.
View Article and Find Full Text PDFJ Pestic Sci
May 2024
School of Agriculture, Utsunomiya University.
Using PCR-Restriction Fragment Length Polymorphism (RFLP) with mitochondrial cytochrome oxidase subunit I sequences, we examined the reproductive modes of female adults of collected at 54 sites across Japan. Results showed the presence of heteroplasmic insects harboring mitochondria associated with arrhenotoky and thelytoky. Using the insects, we also applied PCR-RFLP to examine the genotypes for the amino acid mutation (T929I) site involved in pyrethroid resistance.
View Article and Find Full Text PDFSci Rep
February 2024
School of Agriculture, Utsunomiya University, Utsunomiya, Tochigi, 321-8505, Japan.
In onion thrips Thrips tabaci, reduced sensitivity of the sodium channel caused by several sodium channel mutations have been correlated with pyrethroid resistance. For this study, using mitochondrial cytochrome c oxidase subunit I gene sequences, we examined the phylogenetic relation among a total of 52 thelytokous and arrhenotokous strains with different genotypes of the sodium channel mutations. Then, we used flow cytometry to estimate their ploidy.
View Article and Find Full Text PDFGenome Biol Evol
October 2023
Laboratoire Evolution, Génomes, Comportement, Ecologie, l'Institut Diversité, Ecologie et Evolution du Vivant, Université Paris-Saclay, Gif-sur-Yvette, France.
In Hymenoptera, arrhenotokous parthenogenesis (arrhenotoky) is a common reproductive mode. Thelytokous parthenogenesis (thelytoky), when virgin females produce only females, is less common and is found in several taxa. In our study, we assessed the efficacy of recombination and the effect of thelytoky on the genome structure of Diplolepis rosae, a gall wasp-producing bedeguars in dog roses.
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