Full TGIF Record # 6462
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Author(s):Raatikainen, M.; Vasarainen, A.
Author Affiliation:Agricultural Research Centre, Institute of Pest Investigation, Tikkurila, Finland
Title:Early- and high-summer flight periods of leafhoppers
Source:Annales Agriculturae Fenniae. Vol. 12, 1973, p. 77-94.
# of Pages:18
Keywords:TIC Keywords: Javesella obscurella; Balclutha punctata; Javesella pellucida; Cicadellidae; Phleum pratense; Dominant species
Abstract/Contents:"In connection with studies in Finland on the control of insects attacking spring cereals, various trapping devices, of which a netting apparatus proved the most efficient, were used to collect leafhoppers. Details are given of the information obtained from the nets, which were operated in arable land in three localities in western Finland in May-July each year between 1958 and 1964. These wind nets (1 m in diameter) were installed at heights of 2,6 or 9-10 m, and 90% of the areas in which they were sited were under spring cereals or timothy (Phleum pratense). Some 12 500 leafhoppers of more than 57 species (which are listed) were collected, mainly in the nets. Javesella pellucida (F.) formed 74% of the total, followed in order of decreasing abundance by Balclutha punctata (F.) (5.2%), Macrosteles cristatus (Ribaut) (4.8%), J. obscurella (Boh.) (2.9%), Megadelphax sordidula (Stal) (2.5%) and Arthaldeus pascuellus (Fall.) (2.3%). The proportions of the different species varied considerably from year to year, but J. pellucida was the dominant species in every locality and every year. The flight period began about 25th May for species that overwintered as adults, two weeks later for those that overwintered as nymphs and four weeks later for those that overwintered as eggs. Flight activity was most intense when the relative humidity at 8 a.m. was low and on days when the daily maximum temperature was higher than usual. For species overwintering as adults, nymphs and eggs, the lowest daily maximum temperatures at which flight occurred were 8.5-10 deg C, 10-20 deg C and 15-25 deg C, respectively. Up to 99% of the individuals caught came from the fields in the immediate vicinity of the nets, and the remainder mainly from the surrounding areas, especially woods. Three species (Macrosteles lividus (Edw.), Euides speciosa (Boh.) and Mocuellus metrius (Flor)) had travelled long distances."
Note:Summary appears in Finnish
Geographic Terms:Finland
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Raatikainen, M., and A. Vasarainen. 1973. Early- and high-summer flight periods of leafhoppers. Ann. Agric. Fenniae. 12:p. 77-94.
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