Research Article
Life History of the Tamarind Weevil, Sitophilus linearis (Herbst) (Coleoptera: Curculionidae), on Tamarind Seed
Table 4
The head capsule width for larval instars of S. linearis and test for conformity to Dyar’s rule.
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| Note. Calculated average = observed mean head width of a preceding instar multiplied by the mean growth ratio. Average difference () = 0.0033. Standard deviation of the differences = 0.021. cal = . cal = 0.47; tab = 3.182. Reject Ho if cal > tab. Decision: do not reject Ho, growth ratio conforms to Dyar’s rule. | ||||||||||||||||||||||||||||||||||||||||