SAMPLING HONEYBEE COLONIES FOR BROOD PRODUCTION: A DOUBLE SAMPLING TECHNIQUE

publication date: Oct 18, 2012
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Journal of Apicultural Research
Vol. 22 (4) pp.232-241
DOI
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Date
December 1983
Article Title
SAMPLING HONEYBEE COLONIES FOR BROOD PRODUCTION: A DOUBLE SAMPLING TECHNIQUE
Author(s)
L. E. ROGERS, R. O. GILBERT AND M. BURGETT
Abstract
A procedure is described for estimating numbers of capped brood cells by double sampling combined withlinear regression. A complete census of capped brood cells is better than an estimate, provided it is possible tocount all brood cells directly or from photographs of brood frames. The double sampling technique, however, has the advantage of enabling data to be collected more quickly and at a lower cost than for a complete count. It also provides an estimate of the approximate variability associated with brood estimates and a mechanism for correcting biases associated with different investigators or with estimates by the same individual at different times or under different conditions. The technique is easy to apply in the field and involves minimal disturbance to the colony. A disadvantage is that the calculations associated with estimates of brood area are more arduous, estimates of variability are approximate, and brood estimates may be biased if the data are too few. All calculations can be easily adapted to a programmable calculator or small computer. Linear calibration, an alternative to the use of double sampling, is briefly discussed.
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