02371nas a2200217   4500008004500000020001400045245011000059210006900169260001300238300001400251490000700265520160000272653002301872653003101895100002201926700002301948700002101971700001601992700001602008856012902024       2008                        Engldsh    a0046-225X00aEffects of photoperiod on boll weevil (Coleoptera: Curculionidae) development, survival, and reproduction0 aEffects of photoperiod on boll weevil Coleoptera Curculionidae d  cDecember  a1396-14020 v373 aEffects of photoperiod on development, survival, feeding and oviposition of boll weevils, Anthonomus grandis grandis Boheman, were assessed under five different photophases (24, 14,12, 10, and 0 h) at a constant 27 [degree]C temperature and 65% RH in the laboratory. Analyses of our results detected positive relationships between photoperiod and puncturing (mean numbers of oviposition and feeding punctures per day), and oviposition (oviposition punctures/oviposition+feeding punctures) activities, and the proportion of squares attacked by boll weevil females. When boll weevil females developed in light: darkness cycles, they produced a significantly higher percentage of eggs developing to adulthood than those developed in 24-h light or dark conditions. In long photoperiod (24:0 and 14:10 h), the number of female progeny),vas significantly higher and their development time was significantly shorter than those developed in short photoperiod (0:24 and 10:14 h). Lifetime oviposition was significantly highest at 12- and 14-h photophase, lowest at 0- and 10-h photophase, and intermediate at 24 h of light. Life table calculations indicated that boll weevil populations developed in a photoperiod of 14:10 and 12:12 (L: D) h will increase an average of two-fold each generation (Ro) compared with boll weevils developed in 24:0- and 10:14-h photoperiods and 15-fold compared with those at 0:24 h. Knowledge of the photoperiod-dependent population growth potential is critical for understanding population dynamics to better develop sampling protocols and timing insecticide applications.10aAnthonomus grandis10aAnthonomus grandis grandis1 aGreenberg, S., M.1 aSappington, T., W.1 aAdamczyk, J., J.1 aLiu, T., X.1 aSetamou, M.  uhttps://weevil.myspecies.info/effects-photoperiod-boll-weevil-coleoptera-curculionidae-development-survival-and-reproduction