Effects of optic lobe ablation on circadian activity in the mosquito, Culex pipiens pallens |
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| Authors: | MASANORI KASAI YOSHIHIKO CHIBA |
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| Affiliation: | Environmental Biology Laboratory, Biological Institute, Yamaguchi University, Japan |
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| Abstract: | ABSTRACT. Surgical manipulation was used to show that in the mosquito, Culex pipiens pallens , the circadian pacemaker is probably not located in the optic lobes. Mosquitoes deprived of the greater part of their optic lobes still maintained a circadian activity rhythm: in DD with τ= c . 20–23 h, in LL with τ= c . 14–15 h. The operated mosquitoes showed diphasic activity which entrained to LD 16:8 h (at 200 lux), implying the existence of an extraocular photoreceptive pathway. |
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| Keywords: | Circadian rhythm mosquito circadian rhythm pacemaker Culex pipiens pallens. |
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