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Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L

Journal Article:

Abstract

Cadmium sulfate and zinc sulate salts in graded concentration were fed to silkworm larvae using an artificial diet. Tests were done at three periods, from hatching to pupation, from the beginning of the 3rd instar to pupation, and in the last (5th) instar period. The results obtained are as follows: when the concentration of Cd (as Cd element of CdSO/sub 4/) in diet was over 50 ppm in the 1st instar test and over 200 ppm in the 3rd and the 5th instar tests, all insects were dead before pupation. When the concentration of Cd was over 10 ppm in all tests the cocoon layer became lighter than controls. We conclude that the safety level of Cd concentration in diet is 5 ppm. When the concentration of Zn (as Zn element of ZnSO/sub 4/) in diet was over 200 ppm in the 1st and the 3rd instar tests and over 400 ppm in the last instar test, the cocoon layer become lighter. We conclude that safety level of Zn concentration in diet is 100 ppm.
Publication Date:
Aug 01, 1971
Product Type:
Journal Article
Reference Number:
EDB-85-107417
Resource Relation:
Journal Name: Nippon Sanshigaku Zasshi; (Japan); Journal Volume: 40:4
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CADMIUM; BIOLOGICAL EFFECTS; DOSE-RESPONSE RELATIONSHIPS; ZINC; CADMIUM SULFATES; DIET; INGESTION; LARVAE; LIFE CYCLE; PUPAE; QUANTITY RATIO; SILKWORM; ZINC SULFATES; ANIMALS; ARTHROPODS; CADMIUM COMPOUNDS; ELEMENTS; INSECTS; INTAKE; INVERTEBRATES; LEPIDOPTERA; METALS; MOTHS; OXYGEN COMPOUNDS; SULFATES; SULFUR COMPOUNDS; ZINC COMPOUNDS; 560304* - Chemicals Metabolism & Toxicology- Invertebrates- (-1987)
OSTI ID:
5720793
Research Organizations:
Gunma-ken Sericultural Experimental Station, Maebashi-shi, Japan
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: NISZA
Submitting Site:
HEDB
Size:
Pages: 323-329
Announcement Date:

Journal Article:

Citation Formats

Miyoshi, T, Miyazawa, F, and Shimizu, O. Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L. Japan: N. p., 1971. Web.
Miyoshi, T, Miyazawa, F, & Shimizu, O. Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L. Japan.
Miyoshi, T, Miyazawa, F, and Shimizu, O. 1971. "Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L." Japan.
@misc{etde_5720793,
title = {Effects of heavy metals on the mulberry plant and silkworm. I. Effects of cadmium and zinc on silkworm larvae, Bombyx mori L}
author = {Miyoshi, T, Miyazawa, F, and Shimizu, O}
abstractNote = {Cadmium sulfate and zinc sulate salts in graded concentration were fed to silkworm larvae using an artificial diet. Tests were done at three periods, from hatching to pupation, from the beginning of the 3rd instar to pupation, and in the last (5th) instar period. The results obtained are as follows: when the concentration of Cd (as Cd element of CdSO/sub 4/) in diet was over 50 ppm in the 1st instar test and over 200 ppm in the 3rd and the 5th instar tests, all insects were dead before pupation. When the concentration of Cd was over 10 ppm in all tests the cocoon layer became lighter than controls. We conclude that the safety level of Cd concentration in diet is 5 ppm. When the concentration of Zn (as Zn element of ZnSO/sub 4/) in diet was over 200 ppm in the 1st and the 3rd instar tests and over 400 ppm in the last instar test, the cocoon layer become lighter. We conclude that safety level of Zn concentration in diet is 100 ppm.}
journal = {Nippon Sanshigaku Zasshi; (Japan)}
volume = {40:4}
journal type = {AC}
place = {Japan}
year = {1971}
month = {Aug}
}