웅성불임기술을 이용한 침파리구제시 방산밀도는 야외밀도의 10배는 되어야 하기 때문에 일시적이기는 하지만 필요없이 방산되어 피해를 주는 자성충의 수를 줄이기 위해서는 용시기에 효과적인 성식별방법의 확립이 필요하다. 따라서 본 실험에서는 침파리의 용무게 및 크기를 조사하여 성식별을 실시하였던 바 다음과 같은 결과를 얻었다. 1. 용체중과 제장은 웅충보다 자충이 무겁고 길었으며 용의 체장과 폭간에는 높은 상관이 있었다. 2. 용의 체장과 성충의 흉폭간에도 유의성이 있었다. 3. 자웅용의 체장과 체중의 평균치는 중립수를 이용하여 성식별를 한다면 체장의 경우는 1.4배, 체중에서는 2.2배의 웅성을 취득할 수 있겠다.

In order to eradicate harmful insect by use of sterile male techniques, it is necessary to disperse about 10 times as many male insect as in wild condition. However, it is so difficult to discriminate male insect in pupal stage that usually the population are likely to be contaminated by female insect when that are released in field. The present study was conducted to establish a useful method capable of differenciating the male pupae of Stomawys calcitsans by means of measuring the pupal weight and length. The results were summarized as follows, 1. Male pupa was lighter and shorter than female and high correlation existed between length and width of pupa. 2. There was significant relationship between the length of pupa and width of adult 3. When the pupal sex of stable ay was identified by median of mean length and mean weight of the pupae, the Ratio of female to male was 1 : 1. 4 and 1 : 2. 2, respectively. Therefore, median of pupal weight seemed to be applicable for obtaining more number of male pupae.

• 鄭圭會