Applied Entomology and Zoology (2000) 35, 271-281

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Keigo Nohara, Shun-ichi Nakao and Akira Nagatomi (2000)
A study of the relationship between pesticide treatment and the fauna in citrus groves on Nagashima Island, Kagoshima Prefecture
Applied Entomology and Zoology 35 (2), 271-281
Abstract: This is our third report on the effect of agrochemical treatment to the insect and mite fauna at two native citrus groves of 'Kuroshima-mikan'. The groves are located in Kasedo and Kawatoko on the island of Nagashima, Kagoshima Prefecture. In Kasedo, spraying was practiced in 1974-85 but there was no (or no heavy) spraying from 1986-92. On the other hand in Kawatoko, which was left unsprayed until 1985, only petroleum oil was used once a year (in January) in 1986-87 and in 1990-92. In Kasedo, Panonychus citri (citrus red mite) maintained a high population until 1986, probably because of the poor fauna of its natural enemies due to the spray of insecticides. In Kawatoko, Unaspis yanonensis (arrowhead scale) dropped in numbers from 1986 due to the use of petroleum oil. Kawatoko had a rich fauna of insects, especially the effective predators and parasitoids of insect and mite pests. The use of petroleum oil in winter (once a year) was effective against scales and eventually against mites and whiteflies whose natural enemies were uninhibited by the petroleum oil.
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Research topic(s) for pests/diseases/weeds:
control - general
population dynamics/ epidemiology
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation
resistance to pesticides


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Panonychus citri Citrus (genus) Japan
Panonychus citri Pear (Pyrus) Japan
Aonidiella aurantii Citrus (genus) Japan
Coccus pseudomagnoliarum Citrus (genus) Japan
Diaspidiotus perniciosus Citrus (genus) Japan
Dialeurodes citri Citrus (genus) Japan
Icerya purchasi Citrus (genus) Japan
Aleurocanthus spiniferus Citrus (genus) Japan
Unaspis yanonensis Citrus (genus) Japan
Lepidosaphes gloverii Citrus (genus) Japan
Ceroplastes rubens Citrus (genus) Japan
Parlatoria ziziphi Citrus (genus) Japan
Pinnaspis aspidistrae Citrus (genus) Japan
Pseudaonidia duplex Citrus (genus) Japan
Aonidiella citrina Citrus (genus) Japan
Pulvinaria aurantii Citrus (genus) Japan
Aleurotuberculatus aucubae Citrus (genus) Japan
Aleurolobus marlatti Citrus (genus) Japan
Drosicha corpulenta Citrus (genus) Japan
Pulvinaria citricola Citrus (genus) Japan
Chrysomphalus bifasciculatus Citrus (genus) Japan
Harmonia axyridis (predator) Japan
Orius minutus (predator) Japan
Tenodera aridifolia (predator) Japan
Chilocorus kuwanae (predator) Japan
Oligota kashmirica (predator) Japan
Rodolia cardinalis (predator) Japan
Micraspis discolor (predator) Japan
Stethorus japonicus (predator) Japan
Scymnus posticalis (predator) Japan