FIELD: agricultural biology. SUBSTANCE: method involves providing pairing; exposing female bumblebees to carbon dioxide; immobilizing and drawing out sting; detecting, by means of binocular magnifying glass, typical black marks on abdomen side of sting caused by genital male capsule. Method allows fortiori defective and non-impregnated female bumblebees unfit for reproduction to be determined. Paired female bumblebees are directed for forming full-value bumblebee families. EFFECT: increased efficiency by preliminary revealing of unfit female bumblebees. 2 dwg
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Authors
Dates
1999-07-27—Published
1998-02-09—Filed