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By C.B. Huffaker (Eds.)

ISBN-10: 0123603498

ISBN-13: 9780123603494

ISBN-10: 0123603501

ISBN-13: 9780123603500

ISBN-10: 0733940838

ISBN-13: 9780733940835

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1971/72 Europe (for the United Kingdom, New Zealand, and Canada), and in the West Indies, particularly on the sugarcane borer, Diatraea saccharaiis ( F . ) , with a number of notable successes being achieved (Thompson, 1930a; Myers, 1931). T h i s work developed well during the 1930's, the later work taking place only in Europe. With the start of World W a r II work ceased. However, in 1940 operations were transferred to Canada, under the name Imperial Parasite Service, centered at the Canadian Biological Control Laboratory at Belleville, Ontario.

Even at this time in California, little care was taken to discriminate between useful primary parasites and harmful secondaries. ), is known to have been introduced during this period was indeed fortunate. Also, the hazards of allowing untrained or careless people to move natural enemies from one place to another became apparent when the cottony-cushion scale invaded 24 F. J. SIMMONDS, J. M. FRANZ, AND R. I. SAILER Florida as a result of a misguided attempt to use the vedalia beetle for control of other kinds of scale insects.

Teil. , 2 Taf. 1 Faltkarte. Liu, G. (1939). Some extracts from the history of entomology in China. Psyche 46, 23—28. Lockley, R. M . (1955). Failure of myxomatosis on Skokholm Islands. Nature (London) 175, 906-907. Loeffler, F. (1892a). Ueber Epidemien unter den im hygienischen Institute zu Greifswald gehaltenen Mäusen und über die Bekämpfung der Feldmausplage. Zentralbl. Bakteriol. Parasitenk. Infektionsk. Abtäl 11, 1 2 9 - 1 4 1 . Loeffler, F. (1892b). Die Feldmausplage in Thessalien und ihre erfolgreiche Bekämpfung mittels des Bacillus typhi murium.

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