1980•Applied Entomology and ZoologyOpen access

Studies on the Nitrogenous Compounds in Urine of Mature Silkworm Larvae, Bombyx mori (Lepidoptera : Bombycidae)

Mutsuo Kobayashi, Fumio Mukaiyama, Kunikatsu Hamano

Abstract

Mature silkworm larvae, Bombyx mori, discharged about 0.3ml of urine2 immediately before cocoon spinning. Urine was composed of several kinds of nitrogenous compounds including 16 kinds of amino acids, urea, uric, acid, protein and ammonia. The quantity of each nitrogenous compound in urine varied according to the food condition during the 5th instar and silkworm races. Disc-electrophoretic analysis revealed that several proteins in urine were derived from digestive juice. The role of urine in nitrogen excretion is discussed.

Open-access reader

About this research paper

What this paper is about

Why it matters

OpenAlex reports 4 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Bombyx mori, Bombycidae, Lepidoptera genitalia, Urine, Biology, Urea, Instar, Uric acid