Fuchs, M., Marsella-Herrick, P., Hesler, S., Martinson, T., & Loeb, G.M. 2015 Seasonal Pattern of Virus Acquisition by the Grape Mealybug, Pseudococcus maritimus in a Leafroll-diseased Vineyard. Journal of Plant Pathology 97(3): 503-510
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Notes: The seasonal acquisition pattern of Grapevine leafroll associated virus 1 (GLRaV-1) and Grapevine leafroll-associated virus 3 (GLRaV-3) by the grape mealybug, Pseudococcus maritimus (Erhorn), was determined over two consecutive years in a leafroll-diseased vineyard in the Finger Lakes region of New York. Results of RT-PCR using specific primers were consistent with a preferential virus acquisition by overwintered, 1st instar nymphs in April and May. These findings suggest that disease management strategies designed to mitigate leafroll spread by reducing vector populations should target overwintered crawlers and second instar crawlers at a very early grapevine development stage, i.e. from bud swell to bloom, as well as the summer generation crawlers later in mid-summer.
