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Effects of heliothis virescens larval size on predation by geocoris punctipes

, : Effects of heliothis virescens larval size on predation by geocoris punctipes. Florida Entomologist 63(1): 146-151

The ability of nymphal and adult G. punctipes (Say) to successfully attack and kill H. virescens (F.) larvae of different sizes was evaluated. Successful predation or prey consumption decreased as larval size increased, while consumption increased with predator age. First-, 2nd- and 3rd-instar predator nymphs fed on newly hatched, mid and late 1st-instar H. virescens larvae, respectively; 4th- and 5th-instar nymphs and adult predators were able to feed on 1st- to late 2nd-instar larvae. The defensive actions of the larger larvae in response to predator attack were sufficient to prevent predator feeding in some encounters.


DOI: 10.2307/3494667

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