A method for improving cold resistance of blowfly chrysalis chrysalis

Abstract

The invention discloses a method for improving the cold resistance of nasonia vitripennis. The method includes phases of 1), starting to regulate and rear hosts from adult stages, regulating illumination durations and temperatures on a daily basis and rearing the hosts until larvae are born; 2), regulating and rearing the larvae born by the hosts in the phase 1), regulating illumination durations and temperatures on a daily basis, selecting pupae formed in preset numbers of days at the phase and using the selected pupae as diapause hosts; 3), starting to regulate and rear the nasonia vitripennis from eclosion adult bee stages, arranging adult bees under dark conditions, regulating temperatures and rearing the adult bees for preset numbers of days; 4), selecting male and female adult bees paired in the phase 3) when the nasonia vitripennis lays eggs, and rearing the male and female adult bees in containers with the host pupae formed in the phase 2) according to a 1:1 proportion of adult bee pairs to the fly pupae; 5), regulating illumination durations and temperatures of rearing environments in the phase 4) on a daily basis, removing the adult bees after preset time elapses, allowing the host pupae to develop under identical conditions until larvae of the nasonia vitripennis develop.

Description

technical field [0001] The invention relates to a method for improving the cold resistance of the blowfly chrysalis, in particular to the diapause of the larvae of the blowfly chrysalis, the diapause of the host and the adjustment of the host feed. Background technique [0002] Hymenoptera parasitoids are parasitic natural enemy insects, which play an irreplaceable and important role in agricultural and forestry production, and have good control effects on field pests. The use of parasitoids to control pests is not only conducive to reducing the use of chemical pesticides, protecting the environment, maintaining ecological balance and protecting biodiversity, but also its proliferation and utilization are also one of the means of sustainable and comprehensive management of pests. [0003] At present, the key issues existing in the large-scale production of natural enemy insects at home and abroad, such as product storage, long-distance transportation and colonization ability...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a method for improving the cold resistance of the blowfly chrysalis chrysalis, by manipulating the host and the host feed, such as the diapause state of the host, adding exogenous potential cold-resistant substances to the host feed and other treatment measures to improve the cold resistance of the blowfly chrysalis and gold wasps, thereby solving the problems of short shelf life of parasitic bee products, difficulty in long-distance transportation and low colonization ability

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