Biodiversity of edaphic predatory mites associated with rapeseed in the Karaj region
Rapeseed，Brassica naptts L.，is the third most important source of vegetable oil in the world，after soybean and palm oil. The development of insect and disease management strategies and availability of suitable chemicals or resistant cuhivars is also an important factor affecting the acceptance of rapeseed to production in Iran.During 2004-2005，studies were carried out to identify edaphic predatory mites associated with rapeseed in the Karaj region.A total of seven species were recorded and identified in this region. They ale listed as follows：(1)Tyrophagus putrescentiae(Schrank)，(2)Rhizoglyphus echinopus (Fumouze and Robin)，(3)Anystis baccarum(L.)，(4)Parastitus eta(Oudemans&Voigts)，(5)Bdellodes lapidaria Kramer，(6)Hypoaspis aculeifer Canestrini，(7)Atlothrombium pulvinum Eying.More than 10 rapeseed fields were examined in this study and a Berlese-Tullgrens funnel was used for mite collection. The mites were placed in lactophenol for one day and mounted with Hoyers medium. Tyrophagus putrescentiae is a predator of rootworm eggs and nematodes.Several plant parasitic nematodes including Ditylenchus and Longidorus were observed to be consumed by R.echinopus.Anystis baccarum cleaned up spider mites and aphids on the surface of soil and rapeseed plants.Parastitus eta is a natural enemy of mosquito eggs and nematodes.Bdellodes lapidaria feeds on Sminthurus viridis(L.)，an important pest of plant roots.Hypoaspis aculifer is the most often evaluated predator in family Laelapidae that feeds on many arthropods，including mites and eggs of chafers(family Scarabaeidae).Allothrombium pulvinum is an important predator of aphids on the surface of soil.
Hadi Ostovan
Department of Entomology,Science and Research Branch,Islamic Azad University,Tehran,Iran
国际会议
北京
英文
209-213
2006-10-24（万方平台首次上网日期，不代表论文的发表时间）