땅강아지, Gryllotalpa orientalis (Orthoptera: Gryllotalpidae)의 생물학적특징과 인공사육에 관한 연구 = Studies on the Biology and Artificial Rearing of Mole Cricket, Gryllotalpa orientalis (Orthoptera: Gryllotalpidae)

다국어 초록 (Multilingual Abstract)

The studies were conducted to investigate on the biological characteristics of mole cricket, Gryllotalpa orientalis (Orthoptera: Gryllotalpidae) and evaluate the artificial diet for G. orientalis mass rearing. The mean values of preoviposition duration and the longevity of overwintering individuals were 35.5 and 85.0 days, respectively. The mean value of fecundity 55.2 eggs and the mean number of eggs per egg cells were 35.7 eggs. The mean of egg size was 2.5×1.2 mm and developmental period of egg stage was 18.5 days. The nympal development period from 1st to 8th instar was 12.9±1.3, 9.3±0.6, 8.5±2.9, 15.8±1.9, 19.3±5.7, 16.8±2.2, 21.4±2.7 and 23.6±4.8 days, respectively. A whole mean developmental period of 116.9±11.5 days. One hundred days after the hatching of G. orientalis nymphs was investigated the body length and developmental stages at the three different temperature ranged; at 21℃, 6th nympal instar 1.7±0.1 cm, at 25℃, 6th and 7th nympal instar 1.9±0.1 cm, at 27℃, 7th and 8th nympal instar 2.4±0.4 cm. The composition of the artificial diet for G. orientalis in our study was wheat germ : casein : salt mix : sorbic acid : methyl parben : vitamin mixture of 66.1 : 18.4 : 5.9 : 1.5 : 0.7 : 7.3 in weight. The survival rate of G. orientalis for a total 180 individuals reared on the artificial diet from egg to adult were 89.1%.