During the course of an investigation on the toxicity and repellency of various organic compounds to arthropods affecting man, studies were made on methods of propagating chiggers in the laboratory for test and taxonomic purposes. A brief discussion of the technique found most successful follows. A satisfactory culture medium for most of the species of chiggers studied consisted of soil and chicken manure from the floor of a chicken house. The soil was rendered free of animal life by heating it in a dry oven. There was some clay in the soil, and when wet samples were heated there was a tendency for many small pellets to form which allowed interspaces in the cultures, thus permitting the mites to adjust themselves more readily to the proper condition of moisture. It was later found that the medium could be duplicated by mixing one part chicken manure with five parts of soil from other sources.
Document Type: Research Article
Publication date: March 1, 1946
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Annals of the Entomological Society of America is published in January, March, May, July, September, and November. Annals especially invites submission of manuscripts that integrate different areas of insect biology, and address issues that are likely to be of broad relevance to entomologists. Articles also report on basic aspects of the biology of arthropods, divided into categories by subject matter: systematics; ecology and population biology; arthropod biology; arthropods in relation to plant diseases; conservation biology and biodiversity; physiology, biochemistry, and toxicology; morphology, histology, and fine structure; genetics; and behavior.