Ask A Scientist Zoology Archive

name         Roger
status       student
age          7

Question -   Are all weevils nocturnal?
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Crop insects as a rule are not so much nocturnal or diurnal (terms used 
mostly with advanced animals), but respond to temperature just as much or 
more than they do to light cycles.  Their need for rest periods are real, 
however, on warm days they may be more active during the early daylight 
hours and the late daylight hours due to the temperature moderations.  Many 
of these insects may be active at night when the day is too hot or may be 
active during the day when the nights are too cool.  Keep in mind that 
insects are not able to control their internal temperature, so the 
environmental temperature is important to determine whether they will be 
active or not.


Steve Sample 
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