Topic
Eriophyes vitis
About: Eriophyes vitis is a research topic. Over the lifetime, 18 publications have been published within this topic receiving 151 citations.
Papers
TL;DR: The role of alternative food and microclimate in the system Typhlodromus pyri Scheuten—Panonychus ulmi Koch (Acari, Tetranychidae) on grape vines is investigated.
Abstract: The role of alternative food and microclimate in the system Typhlodromus pyri Scheuten (Acari, Phytoseiidae)—Panonychus ulmi Koch (Acari, Tetranychidae) on grape vines. I. Laboratory investigations
The nutritional value of different food resources for T. pyri occurring on grape vines was tested in feeding experiments. Development and reproduction of the predacious mite were the criteria being studied. The majority of the offered pollen species proved to be of nutritional value to the mites. Pollen from trees and grasses that flower in spring had the best nutritional quality. Pearl hairs from grape leaves and larvae of Drepanothrips reuteri also allowed the reproduction of T. pyri. The most favourable types of food were, however, the eriophyid mites Calepitrimerus vitis and Eriophyes vitis. Panonychus ulmi was of a considerably lower nutritional value. This spider mite was barely accepted by juvenile predacious mites, but also only reluctantly fed upon by adult mites. Tetranychus urticae, on the other hand, was readily accepted. In dual-choice tests, those kinds of food were always preferred which had performed best in the feeding experiments.
Electrophoretic analysis of the gut contents of predatory mites, which had been collected in vineyards, showed that pollen from different wind-pollinating species constituted the major part of the predatory mite's diet during the first part of the vegetation period. During the summer, T. pyri fed mainly on eriophyid mites and thrips larvae, if present. Spider mites constituted the major part of the diet from August to the end of the vegetation period.
Zusammenfassung
Der Wert verschiedener potentieller Nahrungsquellen fur die Ernahrung von T. pyri wurde in Futterungsversuchen gepruft. Als Kriterien dienten Entwicklung und Vermchrung der Raubmilbe.
Die Mehrzahl der verfutterten Pollen erwies sich als gute Nahrungsgrundlage. Die hochste Qualitat hatten die Pollen der im Fruhjahr bluhenden Baume und Graser. Auch Perldrusen und Larven des Thrips Drepanothrips reuteri gestatteten der Raubmilbe eine Fortpflanzung. Als beste Nahrung erwiesen sich die Gallmilben Calepitrimerus vitis und Eriophyes vitis. Deutlich schlechtere Ergebnisse wurden bei Verfutterung von Panonychus ulmi erzielt. Diese Spinnmilbe wurde von juvenilen Raubmilben kaum, aber auch von adulten nur ungern angenommen, wahrend Tetranychus urticae durchaus akzeptiert wurde. In Auswahlversuchen wurde diejenige Nahrung bevorzugt, die auch in den Futterungsversuchen das beste Gedeihen gestattete.
Mittels elektrophoretischer Untersuchungen konnte nachgewiesen werden, daβ die Pollen der verschiedenen Windbestauber wahrend der ersten Halfte der Vegetationsperiode die dominierende Rolle in der Ernahrung von T. pyri spielten. Wahrend des Hochsommers wurden vor allem Blattgallmilben und Thripslarven dort, wo sie vorhanden waren, verzehrt. Spinnmilben machten erst ab dem Spatsommer den Hauptteil der Nahrung von T. pyri aus.
40 citations
1 Jul 1948
TL;DR: In the course of the investigation reported in this paper the writers became convinced that two and possibly three psysiologically distinct strains of the grape erineum mite, Eriophyes vitis (Pgst.), exist on grapes in California.
Abstract: does not appear. First page follows.
In the course of the investigation reported in this paper the writers became convinced that two
and possibly three psysiologically distinct strains of the grape erineum mite, Eriophyes vitis (Pgst.), exist on grapes in California. These are named the bud-mite strain, the
erineum strain, and the leaf-curl strain in this paper. The reasons for regarding
these strains as distinct, and the methods of recognizing the symptoms they produce
on grapes are given in the following report.
Injury to grapevines now known to be caused by the bud-mite strain has been observed
in California for at least twenty years. The minute size of the mites and the obscure
nature of their attack, however, prevented the symptoms from being diagnosed definitely
until 1938. In that year, H. A. Weinland, County Agent of Sonoma County, called the
writers’ attention to a few specimens of eriophyid mites associated with these same
symptoms. The mites were sent to H. H. Keifer of the California State Department of
Agriculture, who identified them as the common erineum mite, Eriophyes vitis (Pgst.), which had previously been associated only with irregular blisters on the
upper surface of the grape leaf and felty patches of hair (erinea) on the lower surface
beneath the blisters. Because the damage to the vines was so extensive and severe,
and because the number of mites was so few, it seemed doubtful that the erineum mite
was the causal agent.
In 1938, the writers began a series of field and laboratory observations to establish
the causal relationship. They have continued these observations to the present time.
34 citations
1 Nov 1955
TL;DR: Seasonal activity of the recently discovered bud-mite strain of the grape erineum mite, Eriophyes vitis, is described in this study to provide a basis for developing control measures.
Abstract: THE SEASONAL ACTIVITY of the recently discovered bud-mite strain of the grape erineum
mite, Eriophyes vitis (Pgst.), is described in this study, undertaken to provide a basis for developing
control measures.
Field observation and laboratory studies, conducted on Carignane grape buds at Davis,
have shown the grape bud mite to be capable of inflicting severe injury that may result
in loss of crop and death of the infested vines. Typical symptoms of bud-mite injury
are: deformation of the primordial clusters, distortion of the basal leaves, stunting
of the main growing point of the buds, and death of the overwintered buds. Evaluation
of mite damage in the field is often complicated by abnormal growth caused by diseases
and other grape pests.
Morphologically identical with the erineum form, the bud-mite strain of Eriophyes vitis (Pgst.) is distinguishable by the damage it causes and by its habitat on the vine. Infestation was heaviest in the first ten
basal buds, the seventh containing the largest number of mites and eggs throughout
the season.
In the spring, overwintering mites are carried up with the elongating shoots to newly
formed buds; they may also crawl up the canes. Progressive penetration of the buds
occurs from May to December, infestation of the primordial clusters occurring as early
as July and increasing until December. The mortality rate of the overwintering mites,
primarily adult females, is usually high.
A field experiment with White Malaga grapes showed no relation between estimated degree
of bud-mite infestation and growth symptoms or yield.
20 citations
TL;DR: Examination of bud mite distribution on shoots for 10 weeks after bud burst showed that the new season's overwintering buds were colonized one week after bud Burst, which coincided with an annual peak in bud mites reproduction.
15 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2017 | 2 |
| 2016 | 1 |
| 2011 | 1 |
| 2010 | 1 |
| 2009 | 2 |
| 2003 | 1 |