Viability of earthworms' egg-cocoons

[摘要] The article suggests the methods of mass collection of earthworms and their cocoons as well as the identification of cocoons' viability which stimulates the research of earthworm, in particular their reproductive capabilities. The absence of correlation between the size of cocoons and the quantity of warms, hatching from them, is found out. It is shown that the preliminary processing with glycerin or dehydration of earthworms' cocoons significantly reduces the yield of viable individuals from frozen cocoons. The technology for transportation and keeping vermiculture in the earthworm-egg-cocoon stage was worked out. The technological scheming includes mass cocoon sampling, a cocoon lot preparation for keeping and transportation at room temperature for 30 days, and long-term keeping (about 5 months) at lower temperatures in wintertime.

[发布机构] International Institute of Economics and Linguistics, Irkutsk State University, Ulan-Batorskaya Street, 6, Irkutsk; 664082, Russia^1;Department of Verterbrate Zoooligy and Ecology, Irkutsk State University, Suhe-Batora Street, 5, Irkutsk; 664011, Russia^2;Department of Engineering Communication and Life-Support Systems, Irkutsk National Research Technical University, Lermontova Street, 83, Irkutsk; 664074, Russia^3;Institute of Biology, Irkutsk State University, Lenin Street, 3, Irkutsk; 664025, Russia^4;Baikal Museum ISC SB RAS, Academic Street, 1, Listvyanka of Irkutsk Region; 664520, Russia^5

[学科分类] 土木及结构工程学

[关键词] Egg cocoons;Lower temperatures;Preliminary processing;Vermiculture