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Meteorological aspects of the numbers and distribution of the rose‐grain aphid, Metopolophium dirhodum (Wlk.), over south‐east England in July 1979
Author(s) -
COCHRANE J.
Publication year - 1980
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1980.tb01131.x
Subject(s) - biology , rose (mathematics) , aphid , predation , population , distribution (mathematics) , agronomy , ecology , horticulture , demography , mathematics , mathematical analysis , sociology
SUMMARY Exceptionally large numbers ( Metopolophium dirhodum were observed i n the air over south‐east England, and caught in suction traps, during July 1979. Meteorological data show that these aphids were probably derived from a native population, increasing exponentially at a time when weather, predators and disease did not impose any significant limitation on the rate of increase, and that few, if any, of these aphids were of continental origin.