Reproductive Capacity of the Green Peach Aphid on Maryland Tobacco1

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When individual Myzus persicae (Sulzer) were reared for several generations in small cages on plotted tobacco, the first-born females lived longer than the last born. Nymphal development was about 8 days for both first-and last-born individuals but first-born aphids lived an average of 18 days as adults, while the last born lived an average of 11.5 days. First-born females gave birth to an average of 51.7 young, and last born an average of 28. Data obtained from individually caged aphids was used to construct a life table from which was calculated a net reproductive rate and the average length of I generation. Under the optimum conditions of this experiment a population of green peach aphids on Maryland tobacco has the potential to increase 26.7 times in each generation. The length of the average generation was calculated to be 12.6 days. At this rate of increase and with no environmental resistance, in 5 generations a single green peach aphid could give rise to a population of 13,552,028 aphids. Aphids colonized on tobacco leaves showed effects of crowding. The maximum density (534 aphids per square foot of leaf area) was attained in 30 days.

Document Type: Research Article

Publication date: June 1, 1969

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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