International Journal of Acarology (2014) 40, 145-151

Cleiton A. Domingos, José W.S. Melo, José E.M. Oliveira and Manoel G.C. Gondim Jr. (2014)
Mites on grapevines in northeast Brazil: occurrence, population dynamics and within-plant distribution
International Journal of Acarology 40 (2), 145-151
Abstract: Mite pests are some of the major limiting factors affecting grape production in the world. Despite the economic importance of the grapevines and the damage to them caused by some of the phytophagous mites in northeast Brazil, little is known about the mite fauna associated with this crop. The present study aimed to identify the mite fauna associated with grapevine, to evaluate the fluctuation of the populations of the most frequent species of phytophagous mites and their associated predators over a 12-month period as well as their within-plant distribution. Considering all varieties sampled, Tetranychus urticae Koch and Oligonychus mangiferus (Rahman and Sapra) comprised 74% of phytophagous mites. Euseius citrifolius Denmark and Muma and Neoseiulus idaeus Denmark and Muma comprised more than 80% of Phytoseiidae mites. The population dynamics study was conducted in a vineyard of Sugraone and a vineyard of Itália Muscat varieties. In these fields, E. citrifolius occurred at low population levels throughout the year, whereas N. idaeus was found only when high densities of T. urticae were observed. Tetranychidae and Phytoseiidae showed the same pattern of within-plant distribution, being found in higher densities on basal and median leaves and rarely they were found on apical leaves.
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Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus urticae	Grapevine (Vitis)	Brazil (NE)
	Oligonychus mangiferus	Grapevine (Vitis)	Brazil (NE)
Neoseiulus idaeus (predator)			Brazil (NE)
Euseius citrifolius (predator)			Brazil (NE)