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Cecidophyopsis ribis
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Cecidophyopsis ribis : ウィキペディア英語版
Cecidophyopsis ribis

''Cecidophyopsis ribis'' is an eriophyid mite which is best known for being a plant parasite, a pest of ''Ribes'' spp., the genus that includes gooseberries and blackcurrants.
It is commonly known as the blackcurrant gall mite or big bud mite. It feeds on the plants' buds, forms galls, and transmits a virus which causes blackcurrant reversion disease. The mite is a serious pest of blackcurrant crops in Europe, but rarely on other continents.
==Biology==
Buds affected by ''Cecidophyopsis ribis'' become swollen and globular and fail to develop normally. They are first noticeable in the autumn when they are unpointed and twice as large as normal buds. Inside the bud, between the closely folded leaves, are thousands of small, spherical eggs which later hatch into sausage-shaped mites with short legs near their anterior end. The mites suck sap from the buds and while they are doing so, can transmit the virus that causes blackcurrant reversion disease. The mites are long. When mature they move out of the buds onto the twigs where they make their way to uninfested buds or may feed on the foliage later in the season causing distortion of the leaves. Crop yields are reduced as a result of the damage they do. The mites are so tiny that they can easily be blown or splashed onto other bushes or carried inadvertently by flying insects.〔 They breed during the summer and autumn, laying their eggs inside new buds. They can also infest the buds of gooseberries, whitecurrants or redcurrants, but in these the affected buds die and "big bud" symptoms do not develop. These alternative host fruit bushes are not susceptible to blackcurrant reversion disease.〔(【引用サイトリンク】title=Which magazine: Blackcurrant reversion )

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Cecidophyopsis ribis」の詳細全文を読む



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