Overwintering of reproductively mature females of a pro‐ovigenic parasitic wasp, Leptopilina heterotoma (Hymenoptera: Figitidae)

2019 ◽  
Vol 22 (3) ◽  
pp. 264-269
Author(s):  
Masahito T. Kimura
Keyword(s):  
Parasitic Wasp ◽  
Leptopilina Heterotoma

scholarly journals Comparative Transcriptome Analysis Reveals Sex-Based Differences during the Development of the Adult Parasitic Wasp Cotesia vestalis (Hymenoptera: Braconidae)

Genes ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 896
Author(s):  
Yuenan Zhou ◽  
Pei Yang ◽  
Shuang Xie ◽  
Min Shi ◽  
Jianhua Huang ◽  
...  
Keyword(s):  
Alternative Splicing ◽  
Adult Development ◽  
Sexual Development ◽  
Molecular Mechanisms ◽  
Parasitic Wasp ◽  
Differentially Expressed Gene ◽  
Regulation Mechanism ◽  
Rna Seq ◽  
Male And Female ◽  
Cotesia Vestalis

The endoparasitic wasp Cotesia vestalis is an important biological agent for controlling the population of Plutella xylostella, a major pest of cruciferous crops worldwide. Though the genome of C. vestalis has recently been reported, molecular mechanisms associated with sexual development have not been comprehensively studied. Here, we combined PacBio Iso-Seq and Illumina RNA-Seq to perform genome-wide profiling of pharate adult and adult development of male and female C. vestalis. Taking advantage of Iso-Seq full-length reads, we identified 14,466 novel transcripts as well as 8770 lncRNAs, with many lncRNAs showing a sex- and stage-specific expression pattern. The differentially expressed gene (DEG) analyses showed 2125 stage-specific and 326 sex-specific expressed genes. We also found that 4819 genes showed 11,856 alternative splicing events through combining the Iso-Seq and RNA-Seq data. The results of comparative analyses showed that most genes were alternatively spliced across developmental stages, and alternative splicing (AS) events were more prevalent in females than in males. Furthermore, we identified six sex-determining genes in this parasitic wasp and verified their sex-specific alternative splicing profiles. Specifically, the characterization of feminizer and doublesex splicing between male and female implies a conserved regulation mechanism of sexual development in parasitic wasps.

scholarly journals Phenotypic plasticity explains apparent reverse evolution of fat synthesis in parasitic wasps

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bertanne Visser ◽  
Hans T. Alborn ◽  
Suzon Rondeaux ◽  
Manon Haillot ◽  
Thierry Hance ◽  
...  
Keyword(s):  
Phenotypic Plasticity ◽  
Dna Sequence ◽  
Sequence Variation ◽  
Protein Domains ◽  
Parasitic Wasps ◽  
Parasitoid Species ◽  
Leptopilina Heterotoma ◽  
Dna Sequence Variation ◽  
Fat Synthesis

AbstractNumerous cases of evolutionary trait loss and regain have been reported over the years. Here, we argue that such reverse evolution can also become apparent when trait expression is plastic in response to the environment. We tested this idea for the loss and regain of fat synthesis in parasitic wasps. We first show experimentally that the wasp Leptopilina heterotoma switches lipogenesis on in a fat-poor environment, and completely off in a fat-rich environment. Plasticity suggests that this species did not regain fat synthesis, but that it can be switched off in some environmental settings. We then compared DNA sequence variation and protein domains of several more distantly related parasitoid species thought to have lost lipogenesis, and found no evidence for non-functionality of key lipogenesis genes. This suggests that other parasitoids may also show plasticity of fat synthesis. Last, we used individual-based simulations to show that a switch for plastic expression can remain functional in the genome for thousands of generations, even if it is only used sporadically. The evolution of plasticity could thus also explain other examples of apparent reverse evolution.

scholarly journals Single and Double Infections with Wolbachia in the Parasitic Wasp Nasonia vitripennis Effects on Compatibility

Genetics ◽  
1996 ◽  
Vol 143 (2) ◽  
pp. 961-972 ◽  
Author(s):  
Marie-Jeanne Perrot-Minnot ◽  
Li Rong Guo ◽  
John H Werren
Keyword(s):  
Genomic Dna ◽  
Rapid Development ◽  
Parasitic Wasp ◽  
Pcr Amplification ◽  
Bacterial Strains ◽  
Nasonia Vitripennis ◽  
Larval Diapause ◽  
Wide Range ◽  
Reproductive Incompatibility ◽  
Infected Line

Abstract Wolbachia are cytoplasmically inherited bacteria responsible for reproductive incompatibility in a wide range of insects. There has been little exploration, however, of within species Wolbachia polymorphisms and their effects on compatibility. Here we show that some strains of the parasitic wasp Nasonia vitripennis are infected with two distinct bacterial strains (A and B) whereas others are singly infected (A or B). Double and single infections are confirmed by both PCR amplification and Southern analysis of genomic DNA. Furthermore, it is shown that prolonged larval diapause (the overwintering stage of the wasp) of a double-infected strain can lead to stochastic loss of one or both bacterial strains. After diapause of a double-infected line, sublines were produced with AB, A only, B only or no Wolbachia. A and B sublines are bidirectionally incompatible, whereas males from AB lines are unidirectionally incompatible with females of A and B sublines. Results therefore show rapid development of bidirectional incompatibility within a species due to segregation of associated symbiotic bacteria.

The effect of complete versus incomplete information on odour discrimination in a parasitic wasp

1998 ◽  
Vol 55 (5) ◽  
pp. 1271-1279 ◽  
Author(s):  
L.E.M. VET ◽  
A.G. DE JONG ◽  
E. FRANCHI ◽  
D.R. PAPAJ
Keyword(s):  
Incomplete Information ◽  
Parasitic Wasp ◽  
Odour Discrimination

Structure and electrophysiological responses of gustatory organs on the ovipositor of the parasitoid Leptopilina heterotoma

2007 ◽  
Vol 36 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Joop C. van Lenteren ◽  
Sara Ruschioni ◽  
Roberto Romani ◽  
Joop J.A. van Loon ◽  
Yu Tong Qiu ◽  
...  
Keyword(s):  
Leptopilina Heterotoma ◽  
Electrophysiological Responses
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