PERFORMANCE OF THE ALFALFA BLOTCH LEAFMINER, AGROMYZA FRONTELLA (DIPTERA: AGROMYZIDAE), ON FOUR ALFALFA VARIETIES

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Abstract
Under laboratory conditions adult feeding, ovipositional preference, daily fecundity and longevity, as well as larval and pupal development time and survival of the alfalfa blotch leafminer, were compared on Anchor, Vernal, Iroquois, and Saranac varieties of alfalfa. Although some significant differences were noted, no constant trends were evident when considering all parameters, and rmax values for A. frontella (Rondani) on the four varieties tested were very similar.Data from field plots confirmed that intervarietal differences of the varieties tested were not of sufficient magnitude to markedly affect the population dynamics of this pest species.