A complex that increases mating ratio and mating time of diamondback moth

Abstract

The invention provides a composite for increasing the mating ratio and mating time of diamondback moths. The composite is prepared by blending, by mass, 1-10 parts of octanal, 5-20 parts of hexyl alcohol, 5-20 parts of geraniol, 5-20 parts of benzyl alcohol and 5-50 parts of cis-3-hexene acetate. The composite is a volatile substance screened out from multiple host plants of the diamondback moths, and has the advantages of being significantly effective, harmless to moth bodies and the like. In the presence of the composite, the mating ratio of the male diamondback moths and the female diamondback moths can be increased, the mating time of the diamondback moths can be prolonged, the egg laying quantity of the female diamondback moths is easily improved, especially when artificial feed is adopted to feed the diamondback moths, the moderate release of the composite significantly improves the reproduction efficiency of offspring, and an excellent time guarantee is provided for tests for researching diamondback-moth mating selection behavior diversity.

Description

technical field [0001] The invention relates to the field of insect growth and ecology, in particular to a compound for improving the mating ratio and mating time of diamondback moth. Background technique [0002] Diamondback moth (Lepidoptera: Plutellaidae; Lepidoptera: Plutellidae), commonly known as hanging silkworm. The insect has become the most widely distributed Lepidoptera pest in the world, and its damage has been recorded in almost all countries and regions where cruciferous vegetables are cultivated (Sarfraz et al., 2005; Talekar and Shelton, 1993). The annual damage and control cost of diamondback moth in the world is as high as 4-5 billion US dollars (Furlong et al., 2013). Plutella xylostella is an oligophagous pest, and its larvae mainly feed on the leaves of cruciferous vegetables. [0003] There are mainly two feeding methods to complete the population reproduction of Plutella xylostella in the laboratory, one is to raise with host plants, and the other is...

AI Technical Summary

Problems solved by technology

Under the feeding of host plants, the egg production of each female adult is about 180, the hatching rate is 95.9%, and the male and female mating ratio is 88.1%. Hidden under the leaves of the host, its behavior cannot be observed through the camera device; under the condition of artificial feed, each female adult lays about 110 eggs, the hatching rate is about 90%, and the male and female mating ratio is 59.5%, although it is convenient to lay eggs However, the survival time of female moths and male moths is relatively short, about 4-6 days, and the technology of artificial feed feeding is not very mature at present. There are still some differences, so we developed a compound that improves the mating rate and mating time of diamondback moth. In the presence of this compound and artificial feed, the number of eggs laid by each adult female is about 170-180, and the hatching rate is between 1 and 2. More than 97.5%, the male and female mating ratio is more than 80.7%, the survival time of female moths and male moths is about 8-9 days, which significantly improves the egg production, male and female mating ratio and survival time of female moths

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