Summary
The relations betweenMetatetranychus ulmi living on apple trees and its different predators are complex. The most important natural enemy of this spider mite is the predacious miteTyphlodromus pyri (= T. tiliae). It destroys more spider mites than the beneficial insects do. In the district of Stuttgart-Hohenheim about 38 species of insects and spiders feed onTyphlodromus mites. For instanceT. pyri is reduced considerably byOrius minutus. This bug is a natural enemy of aphids and spider mites, however it prefers the predatory mites. It attacks the spider mites and aphids only ifTyphlodromus mites are not available.Chrysopa vulgaris andAnthocoris nemorum are similar in their feeding habits. These two destroyTyphlodromus pyri also but they are less important thanO. minutus. The other beneficial insects in our orchards have little effect on spider mites or predacious mites. If we have enough pests on our apple trees to make spraying necessary, we should look forTyphlodromus mites and be careful no to destroy them. We should always examine the composition of the biocoenosis applying chemical agents because the populations of insects and predacious mites may vary from one area to the other.
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Literatur
Andersen, V. St. — 1947. Untersuchungen über die Biologie und Bekämpfung der ObstbaumspinnmilbeParatetranychus pilosus can. etFanz. —Diss., Bonn, 1–118.
Berker, J. — 1958. Die natürlichen Feinde der Tetranychiden. —Z. angew. Ent.,43, 115–172.
Bravenboer, L. — 1959. De chemische en biologische Bestrijding van de SpintmijtTetranychus urticae Koch. —Diss. Landbouwhogeschool Wageningen, 1–85.
Collyer, E. — 1952–1953. Biology of some predatory insects and mites associated with the fruit treered spidermite (Metatetranychus ulmi Koch) in South-Eastern England. I. The biology ofBlepharidopterus angulatus (Fall) (Hem.-Het., Miridae). —J. hortic. Sci., London,27, 117–129, 1952.
—. —Ebenda,28, 85–97, 1953.
—. —Ebenda, J. hortic. Sci., London,28, 98–113, 1953.
—. —Ebenda,28, 246–250, 1953.
— — 1958. Some insectary experiments with predacious mites to determine their effect on the development ofMetatetranychus ulmi (Koch) populations. —Ent. exp. & appl.,1, 138–146.
Dosse, G. — 1960. Uber den Einfluss der RaubmilbeTyphlodromus tiliae Oud auf die ObstbaumspinnmilbeMetatetranychus ulmi Koch (Acari). —Pflanzenschutzber., Wien,24, 113–137.
— — 1961. Über die Bedeutung der Pollennahrung fuerTyphlodromus (T.)pyri Scheuten (=tiliae Oud.) (Acari, Phytoseiidae). —Ent. exp. & appl.,4, 191–195.
Geijskes, D. C. — 1938. Waarnemingen over het Fruitspint in Verband met zijr Bestrijding. —Tidschr. Plantenziekten,44, 49–80.
Günthart, E. & RenéClausen. — 1959. Der Einfluss einiger wichtiger Pflanzenschutzmassnahmen auf die Spinnmilbenräuber aus der Unterfamilie derPhytoseiinae (Acari). —Verhdl. IV. Intern. Pflanzenschutzkongr., Hamburg,1, 947–948.
Krämer, Ph. — 1961. Untersuchungen über den Einfluss einiger Arthropoden auf Raubmilben (Acari). —Z. angew. Zool.,48, 257–311.
Kuenen, D. J. — 1947. On the ecological siguificance of two Predators ofMetatetranychus ulmi Koch (Acari, Tetranychidae). —Tijdschr. Ent.,88, 303–312.
Listo, J., E. M. Listo & V. Kanervo. — 1939–1942. Tutkimusksia hedelmäpuupunkista (Paratetranychus pilosus c. u. f.). —Valt. maatal. julkaisuja — Agric. exp. activ. of the State Helsinki,99, 143 pp., 1939. (Z. Pflanzenkrankh.,50, 215, 1940, ebenda52, 275, 1942.)
Mathys, G. — 1955. Étude faunistique des acariens des pommiers en Suisse romande. —Ann. agric. Suisse,56, 815–825, 1955.
— — 1958. The Control of Phytophaguous Mites in Swiss Vineyards byTyphlodromus Species. —Proc. X. Intern. Congr. Ent.,4, 607–610, 1958.
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Dosse, G. Die Feinde der Raubmilben als Reduzierender Faktor der Spinnmilben. Entomophaga 7, 227–236 (1962). https://doi.org/10.1007/BF02374361
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DOI: https://doi.org/10.1007/BF02374361