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Transient effects of photoperiod on reproduction in the Mexican bean beetle
Author(s) -
TAYLOR FRITZ,
SCHRADER RONALD
Publication year - 1984
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.1365-3032.1984.tb00788.x
Subject(s) - biology , diapause , photoperiodism , coccinellidae , reproduction , voltinism , pest analysis , zoology , botany , ecology , larva , predator , predation
. Mexican bean beetles (Coccinellidae: Epilachna varivestis (Mulsant)) have an adult diapause and show a graded response to photoperiods intermediate between those that lead to the fastest gonadal maturation and those that lead to diapause. The rate of maturation is reduced by a few to several days at day lengths corresponding to dates after the summer solstice, and such delays in reproduction may be of ecological and evolutionary importance. Multinomial probit analysis is demonstrated as a method for studying more than two classes of response to a photoperiodic regime.