Method for artificially domesticating and breeding Trichogramma corn borer with tussah silkworm eggs as host

Abstract

The invention discloses a method for artificially domesticating and breeding Trichogramma corniae with tussah silkworm eggs as hosts. The adaptability of Trichogramma corninosus to tussah silkworm eggs is implemented by co-parasitizing tussah silkworm eggs with the pine caterpillar Trichogramma corniae Domestication, Trichogramma pine caterpillar can bite through tussah silkworm egg shells to form beehive holes, so that more Trichogramma corn borer individuals can emerge and continue to produce offspring on tussah silkworm eggs, Trichogramma corn borer can maintain a relatively large number The stable population enables the continuous domestication of multiple generations, and gradually optimizes the Trichogramma line with higher adaptability to tussah eggs, and then realizes the independent and continuous breeding of Trichogramma cornia on tussah eggs. The large-scale breeding of Trichogramma corn borer eggs laid a technical foundation.

Description

technical field [0001] The invention relates to Trichogramma breeding, in particular to a method for artificially domesticating and breeding Trichogramma corn borer by using tussah silkworm eggs as hosts. Background technique [0002] Tussah silkworm (Antheraea pernyi) is a large Lepidoptera insect, and tussah silkworm eggs can be used to breed Trichogramma. Compared with other commonly used intermediate host eggs such as the rice moth (Corcyra cephalonica) eggs, tussah eggs are larger in size, and a single tussah egg can host more than a hundred Trichogrammas, while a rice moth egg usually only hosts one Trichogramma Therefore, tussah eggs are especially suitable for large-scale breeding of Trichogramma, which can greatly improve production efficiency and reduce production costs. [0003] But at present, only Trichogramma dendrolimi and a small number of Trichogramma chilonis strains have successfully carried out large-scale breeding using tussah eggs, and most of the othe...

AI Technical Summary

Problems solved by technology

[0003] But at present, only Trichogramma dendrolimi and a small number of Trichogramma chilonis strains have successfully carried out large-scale breeding using tussah eggs, and most of the other dominant Trichogramma species do not parasitize tussah eggs, or After the parasitic tussah silkworm eggs cannot break through the egg shell smoothly, the bee emerges

[0004] Because the parasitism rate of wild Trichogramma corn borer to tussah silkworm eggs is extremely low, and the offspring bees rarely successfully emerge, so the traditional domestication and screening work is difficult to carry out, and it is impossible to establish a Trichogramma corn borer that can reproduce continuously on tussah silkworm eggs. eye wasp population

[0005] Existing reports have shown that the corn borer Trichogramma ostriniae cannot independently use tussah eggs to reproduce

Trichogramma pine caterpillar and Trichogramma pine borer method (country: China, publication number: 105766803A, publication date: 2016-7-20) discloses Trichogramma pine borer and Trichogramma pine caterpillar as hosts with tussah silkworm eggs Breeding method for bees parasitizing tussah eggs, but this patent does not involve the independent breeding of Trichogramma corn borer on tussah eggs

Images