Abstract
The experiment was carried out to investigate the effects of juvenile hormone analogue on changes of protein and amino acids in haemolymph of silkworm larva. Juvenile hormone analogue was topically administered to larvae at dose of 1$\mu\textrm{g}$ 10$\mu\textrm{g}$ per gm of body weight at 60hr. of the 5th instar. The results obtained were as follows ; 1. Larval duration of the fifth instar was extended about 1 day by JHA-1 and 4 days by JHA-10 as compared with the control. 2. Cocoon weight and cocoon layer weight by topical application of JHA were heavier than those of the control, but cocoon layer ratio was decreased in JHA-10 to the exclusion of JHA-1. 3. The concentration of haemolymph protein during the fifth instar was increased remarkably by the JHA application. 4. The total content of amino acids in haemolymph proteins of JHA-10 approximately doubled that of the control, with the conspicuous increase of glycine and arginine level.
누에의 5령 60시간째 합성효약 홀몬(JHA)을 체중 1g당 1$\mu\textrm{g}$, 10$\mu\textrm{g}$을 경피투여한 후 체액 중 단백질 및 아미노산의 변동을 조사하였던 바 그 결과는 다음과 같다. 1. 5령유충기간은 대조구보다 JHA-1구가 1일, JHA-10구가 4일 연장되었다. 2. 견종 및 견층종은 합성효약 홀몬 투여구가 대조구보다 무거웠고, 견층비율은 JHA-10구가 낮았다. 3. 체액단백질의 농도는 합성효약홀몬투여구가 대조구에 비해 현저하게 증가하였다. 4. 체액 중 전 아미노산양은 JHA-10구가 대조구에 비해 약 2배 정도 많았으며, 특히 glycine와 arginine의 증가 정도는 현저하다.
