Effects of photoperiod on the biology of Acanthoscelides obtectus Say
1989
Stamopoulos, D.C. (Thessaloniki Univ. (Greece). Lab. of Applied Zoology and Parasitology)
Adults of the bean weevil Acanthoscelides obtectus Say of a laboratory strain, were subjected to LL,20L:4D, 8L:16D, 4L:20D, DD at a constant temperature of 28 (+-) 1 degree C and a relative humidity of 75 (+-) 10 per cent. It seems that a long scotophase, increases fecundity, egg hatchability, number and weight of the emerged adults, and decreases larval mortality und duration of post-embryonic development. Continuous light greatly affected the sex ratio in favor of males
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