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... Two series of experimental fumigations were performed in 1959 and 1960 to evaluate the effectiveness of phosphine at various dosages for insect control in stacks of sacked rough and milled rice covered with gas-tight tarpaulins. The effect of the gas on adult and immature stages of rice weevils, Sitophilus oryzae (L.), and adult confused flour beetles, Tribolium confusum Jacqueline du Val, and on ...
disease transmission; disease vectors; Myzus persicae; Brassica juncea; rearing; Hawaii
Abstract:
... Watermelon mosaic virus, a nonpersistent, aphid-borne virus, is transmitted by the green peach aphid, Myzus persicae (Sulzer). Aphid tests showed that transmission varied with the age of infection in watermelon plants. Transmission was highest at the first week after inoculation of the virus-source plant, and lowest at the fourth. In acquisition feedings ranging from 10 to 30 seconds, maximum tran ...
reproduction; life cycle (organisms); Myzus persicae; laboratory techniques; longevity; Hawaii
Abstract:
... In laboratory studies on the life history of the green peach aphid, Myzus persicae (Sulzer), in Hawaii it was found that the aphids had 4 nymphal instars, a total nymphal period of 6 to 11 days, with an average longevity of approximately 18 days. The preparturition period varied from 0 to 3 days. The alatae produced an average of approximately 30 nymphs, and the apterae, 34 nymphs, in 9.6 reproduc ...