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Method for regulating and controlling pest populations by using symbiotic bacteria in parasitic wasps

A technology of parasitic wasps and symbiotic bacteria, applied in the field of pest control, to achieve the effects of reducing environmental pollution, improving parasitic ability, and improving pest control ability

Inactive Publication Date: 2018-09-07
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses specific types of microorganisms called Symbionts that help fight harmful insects by making them more difficult for other organism or animals to attack on their owners' bodies. By replacing these chemical substances with less dangerous ones like nitrogen fertilizers, this process helps reduce damage caused from man-made agents such as snake bites.

Problems solved by technology

This patented technical problem addressed by the patents relates to controlling harmful insect infests that attack rice cropper (Trichiema spp.) seedlings during their life cycle through interactions with other beneficial microorganisms found naturally within these plants called Symbiontides.

Method used

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  • Method for regulating and controlling pest populations by using symbiotic bacteria in parasitic wasps

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Experimental program
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Effect test

Embodiment 1

[0022] In the early stage of the emergence of the rice borer, such as the eggs collected on May 1, the ratio of the population of the rice borer to the population of the rice borer Trichogramma was 27.8. At this time, the infection rate of the rice borer symbiotic Wolbachia was high, which was 44.3%, and the female ratio of Trichogramma rice borer is also high, which is 93.6%.

Embodiment 2

[0024] In the early stage of the emergence of the rice borer, such as the eggs collected on May 2, the ratio of the population of the rice borer to the population of the rice borer Trichogramma was 22.7, and the infection rate of the rice borer symbiotic Wolbachia reached 41.5%. The female ratio of Trichogramma borer is as high as 90%.

Embodiment 3

[0026] In the middle and late stages of the emergence of the rice borer, that is, the eggs of the rice borer were collected on May 10, the ratio of the population of the rice borer to the population of the rice borer Trichogramma dropped to 16.3, and the infection rate of the endosymbiotic bacteria Wolbachia in the rice borer was lower than that in the early stage It decreased to 37.4%. At this time, the female ratio of Trichogramma rice borer also decreased to 84.9%.

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Abstract

The invention discloses a method for regulating and controlling pest populations by using symbiotic bacteria in parasitic wasps. According to the relative size of the population quantities of the parasitic wasp trichogramma japonicum and the host tryporyza incertulas, the female ratio of the parasitic wasps is changed through the regulation of the infection rate of the symbiotic bacteria Wolbachiain the parasitic wasps, so that the control effect to the pest populations can be adjusted. Compared with the conventional chemical method of pest prevention and control, the method can safely and effectively improve the pest control capability of natural pest control resources, can replace middle-and high-toxicity pesticides to control pests, and can effectively reduce the environmental pollution.

Description

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Claims

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Application Information

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Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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