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蔬菜病虫害的发生是制约攀西地区蔬菜高产优质的主要原因之一。本文对攀西地区蔬菜主要种植区的病虫害进行了系统调查,列出了该地区蔬菜主要病虫害名录。 相似文献
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《Journal of Natural History》2012,46(7-8):393-405
Thrips are cosmopolitan and abundant insects with great diversity in the Neotropics, but taxonomic and crop pest aspects comprise almost all of our knowledge of these insects. Here we describe a unique case of an ectoparasite species, Aulacothrips dictyotus Hood (Heterothripidae), which infests and also uses as dispersal vector (phoresy behaviour) the hemipteran Enchenopa brasiliensis (Membracidae). Thrips fix themselves on the ventral region of their hosts, at the junction of thorax and abdomen. Phoresy takes place when the attached thrips are transported to other plants and/or host aggregations. Phoresy is a useful long range dispersal mechanism for this weakly flying thrip species. Out of the 6000 species of thrips described, most are phytophagous and fungivorous, and only A. dictyotus performs ectoparasitism and phoretic behaviour. 相似文献
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《Journal of Natural History》2012,46(21-22):1319-1325
The biology and immature stages of Pagyris ulla (Hewitson, [1857]) (Lepidoptera: Nymphalidae: Ithomiini) are described for the first time. The species’ host plant is established to be Brugmansia candida Pers. (Solanaceae). The life cycle from eggs to adult under laboratory conditions and ambient temperature took approximately 47 days, and the larvae passed through five instars. The larvae are gregarious, feed at night, and rest during the day in nests made by joining leaves near the apex of the plant stem. 相似文献
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