Relationship between Wolbachia density and sex-ratio in a Trichogramma strain

Authors

  • C. Pascal Facultad de Agronomía, Garzón 780, 12900 Montevideo, Uruguay.
  • B. Pintureau Biologie Fonctionnelle, Insectes et Interactions - UMR INRA/INSA de Lyon, INSA Bâtiment L. Pasteur, 69621 - Villeurbanne-cedex, France.
  • H. Charles Biologie Fonctionnelle, Insectes et Interactions - UMR INRA/INSA de Lyon, INSA Bâtiment L. Pasteur, 69621 - Villeurbanne-cedex, France.
  • C. Katchadourian Biologie Fonctionnelle, Insectes et Interactions - UMR INRA/INSA de Lyon, INSA Bâtiment L. Pasteur, 69621 - Villeurbanne-cedex, France.
  • S. Grenier Biologie Fonctionnelle, Insectes et Interactions - UMR INRA/INSA de Lyon, INSA Bâtiment L. Pasteur, 69621 - Villeurbanne-cedex, France.
  • P. Bolland Biologie Fonctionnelle, Insectes et Interactions - UMR INRA/INSA de Lyon, INSA Bâtiment L. Pasteur, 69621 - Villeurbanne-cedex, France.
  • C. Robin Biologie Fonctionnelle, Insectes et Interactions - UMR INRA/INSA de Lyon, INSA Bâtiment L. Pasteur, 69621 - Villeurbanne-cedex, France.

DOI:

https://doi.org/10.31285/AGRO.08.1001

Keywords:

bacteria, egg parasitoid, interaction, symbiont, Trichogrammatidae

Abstract

A controlled thermal cure was applied to a Trichogramma cordubensis strain completely infected by endosymbionts belonging to the Wolbachia genus and which induce the thelytokous mode of reproduction. Varying the conditions of the cure led to the production of a variable number of males among the progeny, and it was possible to examine the correlation between sex-ratio and bacterial density estimated by means of the Dot-blot technique, using the Trichogramma gene 18S and the Wolbachia gene wsp. A slight positive correlation was observed between the two variables. An additional statistical analysis confirmed that a relationship exists between the host sex-ratio and bacterial density but that this relationship is partially concealed by methodological problems.

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Published

2004-12-01

How to Cite

1.
Pascal C, Pintureau B, Charles H, Katchadourian C, Grenier S, Bolland P, et al. Relationship between Wolbachia density and sex-ratio in a Trichogramma strain. Agrocienc Urug [Internet]. 2004 Dec. 1 [cited 2024 Jun. 14];8(2):11-22. Available from: https://agrocienciauruguay.uy/index.php/agrociencia/article/view/1001

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Plant protection
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