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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Phytophagy as an alternative feeding strategy of parasitic Hymenoptera larvae
 Böhmová, Julie ; Janšta, Petr (advisor) ; Skuhrovec, Jiří (referee)
Parasitoidism is considered to be the primary larval feeding strategy of parasitic Hymenoptera (Hymenoptera: Apocrita: Parasitoida). However, many species became secondarily phytophagous, in particular some species of Ichneumonoidea, Cynipoidea and Chalcidoidea. The bachelor thesis summarizes the knowledge about phytophagy in these superfamilies and divides them into four categories. The thesis further evaluates morphological and behavioural adaptations related to this way of life as well as other aspects of their coevolution with host plants.
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Basic comparison of insect species diversity in various varieties of winter oilseed rape and neighboring flowering strip
 Souček, Jiří ; Kazda, Jan (advisor) ; Josef, Josef (referee)
Rape seed is an very important crop in Czech republic. It is and economic plant and also good plant for another plants sowned another year. This caused that a lot of fields is sowned with rape seed. Rape seed is demanding a lot of chemistry against pests. This cause that in those fields is lower insect biodiversity. Flowering strips could be helpful to get higher insect biodiversity. Also it could help to decrease pests in rape seed. Research was observing insect predators (Syrphidae, Staphylinidae, Coccinillidae, Cantharidae) and parasitoids (Hymenoptera parasitica). Moericke traps were not a good choice for measurments of insect predators and it didnt prove higher diversity of those predators. However, Moerickeho traps proved that higher number of Brassicogethes were correlating with higher number of parasitoids.
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