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Title: | Citrus Mealyburg (Hemiptera: Pseudococcidae) Movement and Population Dynamics in an Arbor-Trained Vineyard |
Authors: | Cid, Miguel CSIC; Pereira, S.; Cabaleiro, C.; Segura, A. | Keywords: | Insects Citrus mealybug Planococcus citri Grapevine Grapevine leafroll-associated Virus 3 |
Issue Date: | 2010 | Publisher: | Entomological Society of America | Citation: | Journal of Economic History 103(3): 619-630 (2010) | Abstract: | The citrus mealybug, Planococcus citri (Risso) (Hemiptera: Pseudococcidae), is the main grapevine pest in vineyards in some countries, such as Spain and Brazil. In Galician vineyards (northwestern Spain), mealybug population levels are low because the accumulated degree-days are lower than in other grapevine-growing areas. The main problem caused by mealybugs is the transmission of viruses, even at low infestation levels. The active period of citrus mealybug in the study vineyard lasted from July until December, with an important movement peak at the end of July and August and a lower peak in November. The mealybug mainly moved upward along arbor-trained plants, and there were no important downward movements at the end of the season as has been described for other grapevine mealybugs. The mealybugs were normally restricted to the woody organs and were only present on leaves, branches, and green canes (always close to woody parts) in plants with high infestations. The movement of mealybugs between plants does not seem to take place by contact between green organs. Passive aerial transport and movement of pruning remains may play an important role in mealybug movement and thus in spread of the virus. The number of mealybugs carrying Grapevine leafroll-associated virus 3 (GLRaV-3) was found to represent 75% of mealybugs caught in a GLRaV-3 infected vineyard. | Description: | 12 páginas, figuras y tablas estadísticas. | Publisher version (URL): | http://dx.doi.org/10.1603/EC09234 | URI: | http://hdl.handle.net/10261/37718 | DOI: | 10.1603/EC09234 | ISSN: | 0022-0493 |
Appears in Collections: | (ICA) Artículos |
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