Preparation of artificial diets common to Agrius convolvuli and Bombyx mori
1996
Shimoda, M. (National Inst. of Sericultural and Entomological Science, Tsukuba, Ibaraki (Japan)) | Kiguchi, K. | Moteki, N. | Hamano, K.
As a basis for comparative study on the nitrogen metabolism between the cocoon spinning insect Bombyx mori and the non-spinning insect Agrius convolvuli (the sweet potato hornworm), artificial diets which are suitable for rearing 5th instar larvae of both insects were developed. Diets of A. convolvuli were modified and added with varying contents of sweet potato leaf powder (SPLP) and mulberry leaf powder (MLP) up to total 20g in 116g dry matter. Water content of diets was adjusted to 75% considering the already known optimum water content for B. mori (64 to 73%) and that for A. convolvuli (75 to 80%) described in this paper. A. convolvuli required SPLP more than 5g/116g of dry matter. MLP did not inhibit the growth and development of A. convolvuli. Although MLP was not necessary for the growth of B. mori, addition of MLP increased the whole cocoon weight and the percentage of cocoon shell weight. SPLP had a similar effect to MLP on the growth of B. mori. The optimum contents of SPLP and MLP for the growth of both insects were 5 and 5g or 7.5 and 2.5g per 116g of dry matter. These artificial diets make it possible to rear the 2 species on the same dietary composition
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