Neotropical Entomology (2007) 36, 117-127

Peterson R. Demite and Reinaldo J.F. Feres (2007)
Ocorrência e flutuação populacional de ácaros associados a seringais vizinhos de fragmentos de cerrado
[Occurrence and fluctuation of mite populations associated with rubber tree crop neighbor of fragments of cerrado]
Neotropical Entomology 36 (1), 117-127
Abstract: The basic knowledge of the seasonal occurrence of mites can supply data for elaboration of programs of ecological management to be implanted with success in the future. The objective of this study was to determine the species richness and the seasonality of mites present in two areas of rubber tree crops neighboring to native areas in Itiquira, MT. Along one year, 25 quantitative samplings were accomplished in rubber tree crop neighboring to two fragments of Cerrado (Cerradão and Mata Ripária). There were registered 199,380 mites, of 48 species, belonging to 15 families. Of those, 13 species are phytophagous, 18 predators and 17 mycophagous or of unknown alimentary habit. Three phytophagous species represented more than 97% of the mites collected: Phyllocoptruta seringueirae Feres (80.8%), Tenuipalpus heveae Baker (12.7%) and Calacarus heveae Feres (3.6%). Among the predators, the most abundant species were Agistemus sp., Scirula sp. and Euseius concordis (Chant). Twenty-eight species were common to both crops. The families that had the largest number of species collected in the neighboring area to Cerradão were Tydeidae (7), Tarsonemidae (6), Eriophyidae and Phytoseiidae (4), and in the area close to Mata Ripária, Tydeidae (9) and Phytoseiidae (8). The presence of vegetation near the crop should explain the great number of species of mites classified as accidental found in this study. The largest abundances and species richness occurred in the end of the rainy season and beginning of the dry season.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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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.
	Calacarus heveae	Rubber (Hevea brasiliensis)	Brazil (NW)
	Tenuipalpus heveae	Rubber (Hevea brasiliensis)	Brazil (NW)
	Phyllocoptruta seringueirae	Rubber (Hevea brasiliensis)	Brazil (NW)
Euseius concordis (predator)			Brazil (NW)