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Among the thrips species feeding on pea plants, the most numerous were: Thrips fuscipennis – occurring on green parts of plants and flowers, Frankliniella intonsa – occurring on flowers and a polyphagous species Thrips tabaci. These species were observed on pea plants from the first decade of May to the end of harvest.The greatest number of thrips was recorded in the first decade of June. Among the recoded species Aeolothrips intermedius was also numerous. This species is a zoophagous however, its larvae can prick and suck plant tissues, especially flowers.
The occurrence of rove beetles (Coleoptera: Staphylinidae) on a balk, field grove and ecoton was studied. Individuals of rove beetles were captured into Barber’s pitfall traps from May to October 2007 and 2009. During the investigation period 733 beetles were collected (42 species). The eudominants were Philonthus addendus, Aleochara curtula, Philonthus succicola and Oxypoda acuminata. The class of dominants was represented by one species – Philonthus decorus, which is an important entomophagous beetle of Operophtera brumata. The zoogeographical analysis revealed that the largest number of species represented the European element (33.3%).
The effect of chemical plant protection on the occurrence of hoverflies (Diptera: Syrphidae) was studied in 1998 in Winna Góra. The total number of Syrphidae was low on the experimental plantation with lupine and fodder pea treated and untreated by pesticides. Also the number of Syrphidae, was much higher (71.4%) in adjacent marginal habitats. The same site dependence was observed in the species diversity of aphidophagous hoverflies and aphids
Investigations on the effect of food on length of larval development of Macrolophus melanotoma were carried out in the Department of Plant Protection Methods, Poznań University of Life Sciences in 2004–2006. It was found that the length of complete larval development depended on the type of fed food. The shortest period of larval development of the predatory bug was recorded for larvae’ feeding on gerbera leaves and at the same time additionally fed with sterile eggs of moth Anagasta kuehniella (14.5 days) or Sitotroga cerealella (15.5 days). When the predator was feeding on gerbera leaves infested by Trialeurodes vaporariorum or Tetranychus urticae the length of larval development was significantly longer and amounted to about 20 days. When M. melanotoma was feeding strictly on gerbera leaves 100% mortality was recorded.
A study was conducted in 2003–2005 on a plantation of shrub willow grown as energy crop. An assemblage of predatory and parasitic insects dwelling on the plantation was diverse and abundant compared to other assemblages of this type on other agricultural crops. It comprised mainly the soldier beetles, Cantharidae, and hoverflies, Syrphidae, with the eudominant species such as Cantharis fusca L. and the marmalade hoverfly Syrphus (Episyrphus) balteatus Deg., as well as the common flower bug Anthocoris nemorum L., the lacewing fly Chrysopa vulgaris or a braconid wasp Apanteles glomeratus. These species are clearly an important element in the defence mechanism of the environment against phytofagous insect species whose foraging behaviour is connected with the willow. By comparing the determined number of taxa found in the willow plantation with the data given in references on assemblages of useful fauna in similar habitats like field tree groups, the latter can be seen as more favourable.
Badania nad entomofauną oblatującą kwiaty 12 gatunków roślin zielarskich prowadzono w latach 2006-2007 w Piastowie koło Wrocławia. Obserwacje prowadzono na kwiatach ziół dwa razy w tygodniu, rejestrując obecność Syrphinae na powierzchni 1 m2 przez 5 minut. Łącznie na obserwowanych kwiatach stwierdzono obecność 194 muchówek z podrodziny Syrphinae, które najliczniej notowano na kwiatach ziół z rodziny Lamiaceae. Były to: mięta pieprzowa (29,9% zgrupowania Syrphinae), kocimiętka właściwa (17,5%) i tymianek pospolity (16%). Nieco mniej atrakcyjne okazały się kwiaty hyzopu lekarskiego, lawendy lekarskiej i lebiodki pospolitej, które łącznie odwiedziło ok. 30% zgrupowania. Pozostałe gatunki ziół były odwiedzane sporadycznie. Pośród 6 gatunków ziół najsilniej zwabiających Syrphinae, najczęściej odwiedzana była kocimiętka właściwa, a najrzadziej lebiodka pospolita.
Frankliniella occidentalis is the most important pest in greenhouse crops. Successful control of this pest is very difficult. In laboratory and greenhouses studies predator mites Amblyseius swirskii and Amblyseius cucumeris showed a high efficacy used together in control of western flower thrips (83% mortality). Predators used separately were less efficacious against the pest (about 63% mortality). The studies showed neutral interaction of A. swirskii and A. cucumeris populations in control of western flower thrips.
Observations on the species composition of ground beetles (Coleoptera, Carabidae) were conducted in the years 2008–2009 in the collection of plants of the genus Allium spp. belonging to Laboratory of Plant Genetic Resources in the Skierniewice IW (UTM: DC 45). Ground beetles were collected using the Barber’s soil traps. In the first year of the study were captured a total of 1 277 adults of Carabidae, in the next year 1 197 ones. The most numerous species trapped were: Bembidion properans (Stephens), B. quadrimaculatum (Linnaeus), Harpalus affinis (Schrank).
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