TY - JOUR
AU - Wheeler, A. G.
AB - AbstractFrom 1966 through 1969 an investigation was conducted on the influence of alfalfa resistance on populations of Acyrthosiphon pisum (Harris) and their associated parasites, predators, and competitors. One sixth as many pea aphids were found on the Kansas (‘KS 10’) variety than on the ‘Vernal’ alfalfa variety. The number of aphids on ‘DuPuits’ was about 4-fold that on the Kansas variety. The different numbers of pea aphids on the various alfalfa varieties did not affect parasitism rates or predator numbers associated with the high and low aphid numbers on the 3 alfalfa varieties. In the pea aphid, there appears also to be no direct effect of the plant host on parasitism. This finding differed from other studies with various parasite-host systems which showed that the plant host may have a significant effect upon parasitism rates. Of the pea aphid competitors, leafhoppers were most abundant on Vernal but least abundant on DuPuits. However, DuPuits had the largest number of alfalfa weevils, mirids, and other miscellaneous herbivores. No means was evident to predict how resistance to one insect species will influence the pest enemies and associated herbivores.
TI - Influence of Alfalfa Resistance on a Pea Aphid1 Population and Its Associated Parasites, Predators, and Competitors2
JF - Environmental Entomology
DO - 10.1093/ee/2.1.1
DA - 1973-02-01
UR - https://www.deepdyve.com/lp/oxford-university-press/influence-of-alfalfa-resistance-on-a-pea-aphid1-population-and-its-7TWXg9NpOV
SP - 1
EP - 11
VL - 2
IS - 1
DP - DeepDyve
ER -