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Effects of optic lobe ablation on circadian activity in the mosquito, Culex pipiens pallens
Author(s) -
KASAI MASANORI,
CHIBA YOSHIHIKO
Publication year - 1987
Publication title -
physiological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 57
eISSN - 1365-3032
pISSN - 0307-6962
DOI - 10.1111/j.1365-3032.1987.tb00724.x
Subject(s) - biology , culex pipiens , circadian rhythm , culex , zoology , anatomy , botany , endocrinology , larva
. 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.