Longitudinal analysis in the determination of adequate photoperiod for bee breading in laboratory

Carla Regina Guimarães BRIGHENTI[1]

Marcelo Angelo CIRILLO[2]

Deodoro Magno BRIGHENTI[3]

§    ABSTRACT: The appropriate exposition to the luminosity becomes necessary in order to increase the longevity of insects in the experiments at laboratory. In the biological trial with Apis mellifera each unit sample is constituted of groups of bees confined in the same cage, so the mortality of certain number of bees will be able to influence the mortality of the others. The deficiency in the literature of statistical techniques that provides an ideal experimental condition for the breeding of adult bees in group is also known. Due to the facts mentioned above, the present work had the objective of using a longitudinal analysis, in which, the purpose of verifying to temporary dependence effect in the mortality of bees, being those submitted to different photoperiod. The generalized estimate equations technique applied to the model logit were used, in which, the viability of incorporating the correlation structures to relate the mortality of the bees observed inside of each cage was evaluated along the time. It was concluded that the temporary dependence observed inside of the cages has no influence in the mortality of the A. mellifera for all of the considered photoperiod and that the treatment with the absence of light was the only one which presents the smaller mortality proportion during all of the evaluated time and this is the recommended.

§    KEY-WORDS: GEE, dependence, correlation, longevity, Apis mellifera.


[1] Universidade Federal de São João Del Rei – Campus Alto Paraopeba, CEP: 36300-088, São João Del Rei, MG, Brasil. E-mail: carlabrighenti@ufsj.edu.br

[2] Departamento de Ciências Exatas, Universidade Federal de Lavras - UFLA, Caixa .Postal. 37, CEP 37200-000 Lavras, MG, Brasil. E-mail: macufla@gmail.com

[3] Departamento de Entomologia, Universidade Federal de Lavras - UFLA, Caixa .Postal. 37, CEP 37200-000 Lavras, MG, Brasil. E-mail: deodoro_santos@yahoo.com.br