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| 31. |
Behavior of the ParasiteAphelinus asychis1in Relation to the Greenbug2and Certain Hosts3 |
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Energy & Environmental Science,
Volume 1,
Issue 2,
1972,
Page 266-268
M. Esmaili,
Gerald Wilde,
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摘要:
The green bug,Schizaphis graminum(Rondani), is a major pest of small grains and sorghum in central and western United States. Biotype C of the greenbug often causes severe sorghum loses. Because most cereals and sorghums are relatively low-value-per-acre crops and because of residue problems, control by resistant varieties, predators, and parasites is particularly desirable. Resistant varieties are promising (Harvey and Hackerott 1969) and several parasites, includingAphelinus asychis(Walker), have been introduced (Jackson and Eikenbary 1971). Some considerA. asychissynonymous withA. semiflavous;others think the two are separate species.
ISSN:1754-5692
DOI:10.1093/ee/1.2.266
出版商:Oxford University Press
年代:1972
数据来源: OUP
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| 32. |
Field Observations of Predation on the Large Milkweed Bug,Oncopeltus fasciatus1,2 |
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Energy & Environmental Science,
Volume 1,
Issue 2,
1972,
Page 268-268
Donna Sauer,
Dorothy Feir,
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PDF (92KB)
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摘要:
Oncopeltus fasciatus(Dallas) was observed in 2 stands of common milkweeds,Asclepias syriacaL., every 3rd day from May to November of 1970 for a total of ca. 250 hr of observation. (The locations of the plots were 38°41′00″long. and 90°45′24″ lat (Plot 1) and 38°40′24″ long. and 90°45′35″ lat (Plot 2) on the University of Missouri Agricultural Experimental Farm, Weldon Springs, Mo.) Because the milkweeds and subsequently the large milkweed bugs feeding on these plants contain relatively large amounts of digitalislike compounds (Feir and Suen 1971), it is of interest to know what predators attack the large milkweed bug.
ISSN:1754-5692
DOI:10.1093/ee/1.2.268
出版商:Oxford University Press
年代:1972
数据来源: OUP
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