Effect of photoperiodic regimes on the oviposition of artificially overwintered Bombus terrestris L. queens and the production of sexuals
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Published source details
Tasei J.-N. & Aupinel P. (1994) Effect of photoperiodic regimes on the oviposition of artificially overwintered Bombus terrestris L. queens and the production of sexuals. Journal of Apicultural Research, 33, 27-33.
Published source details Tasei J.-N. & Aupinel P. (1994) Effect of photoperiodic regimes on the oviposition of artificially overwintered Bombus terrestris L. queens and the production of sexuals. Journal of Apicultural Research, 33, 27-33.
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This study is summarised as evidence for the following.
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Rear declining bumblebees in captivity Action Link |
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Rear declining bumblebees in captivity
Two replicated laboratory trials in France (Tasei & Aupinel 1994, Tasei 1994) showed that an eight hour light, 16 hour dark regime imposed during rearing induces egg-laying more quickly (average 33 and 21 days respectively) in B. terrestris queens than constant dark (average 47 and 39 days), or, in one set of experiments, constant light (average 59 days to egg-laying). Both experiments found that the light:dark regime did not significantly affect the chance of a B. terrestris queen laying eggs (range 61-73% for all treatments). Tasei & Aupinel (1994) used 103 artificially hibernated laboratory reared queens confined alone in standard rearing conditions. Tasei (1994) used 200 non-hibernated laboratory reared queens anaesthetized with CO2 and confined with one B. terrestris worker.
