Comparison of mass-rearing Scleroderma guani Xiao et Wu (Hymenoptera: Bethylidae) using different type of parasites
There would be a degradation on the stirp of Scleroderma guani after long-term rearing using alternate host,and the result is showed as a phenomenon that parasitic rate and successful parasitic rate will decline obviously and with a low number and degraded individual of the filial generation.This is related with alternate host,the parasite itself and the breeding environment.The parasites were divided into three types defining as type Ⅰ type Ⅱ and type Ⅲ depended on their shape diversity.Then the rearing of S.guani was carried out separately using three types of parasites mentioned above.By comparing the main parasitic parameters comprehensively of three types parasites,we determined which type of parasite was suitable enough for the mass-rearing.Finally,the study showed that type Ⅰ is the best choise.When the parasites is stored 50 days and made parasite-host ratio 3 to 1,the breeding effect is excellent.
Scleroderma guanitypes of bethylideffect of breeding