Download e-book for iPad: Citrus Mites: Identification, Bionomy and Control by Vincenzo Vacante

By Vincenzo Vacante

Citrus pests are a major factor for crop growers, inflicting difficulties in yield and monetary losses. Citrus Mites is a complete examine of mites destructive to citrus vegetation from all citrus turning out to be areas all over the world. offering an invaluable source for picking citrus crop pests, the textual content also will tackle equipment of removing from crops, describe indicators of wear because of pests and speak about tools of eradication and regulate, making it crucial for horticulturalists, pomologists and acarologists in addition to practitioners, researchers and scholars of crop safeguard and pest administration.

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Extra info for Citrus Mites: Identification, Bionomy and Control

Sample text

The chelicerae are considered as derivative endopodal appendages of the first somite and are placed dorsally compared with the opening mouth and commonly possess three segments called cheliceral base, digitus fixus and digitus mobilis, respectively. The first is basal and bears dorsally the digitus fixus articulated with the distal digitus mobilis. The cheliceral bases may be partially or completely fused to each other and form, as in the case of tetranychids and other similar groups, the stylophore.

In the case of serious attacks, the cuticle may lose its shine and become bronze, with yellowish spots in the areas degreened by the release of ethylene in the production process of the wound (McCoy and Albrigo, 1975). In the lower surface this can lead to appreciable ‘mesophyll collapse’ as de-greened yellowish spots that later become necrotic (Albrigo and McCoy, 1974). A severe attack on the lower surfaces can increase transpiration and stimulate a consequent defoliation (McCoy, 1976). As regards the fruit, infestations of A.

Heating the mites in the clearing medium on a hot plate produces a rapid maceration within a period ranging from a few minutes to approximately 1 h. Cleared specimens must be washed with distilled water before mounting on slides. 2 Temporary Mounts The mounting slide may be temporary or permanent and it is possible to consult various specialist contributions for this (Singer, 1967; Krantz, 1978; Gutierrez, 1985a; Evans, 1992; Amrine and Manson, 1996; Walter and Krantz, 2009). Lactic acid can be used for temporary mounts, applying a drop at the centre of a glass slide and placing the mite at the centre with the help of an appropriately sized needle or spatula.

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