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Item Description Johnson, Marshall W. en_US Toscano, Nick C. en_US Jones, Vincent P. en_US Bailey, J Blair en_US 2009-09-09T01:22:24Z 2009-09-09T01:22:24Z 1986-12 en_US
dc.identifier.citation Johnson MW, Toscano NC, Jones VP, Bailey JB. 1986. Modified ultrsonic actograph for monitoring activity of Lepidopterous larvae. Proc Hawaiian Entomol Soc 27:141-146. en_US
dc.identifier.issn 0073-134X en_US
dc.description.abstract An ultrasonic actograph was modified to detect the slow movements typical of lepidopterous larvae. A differential instrumentation amplifier increased the sensitivity of the instrument. Activity patterns of 5th instars of Spodoptera exigua (Hubner) (Lepidoptera: Noctuidae) and Sabulodes aegrotata Guenee (Lepidoptera: Geometridae) were determined using the modified actograph. S. exigua larvae were active ca. 339 minutes of the day with significantly greater photophase activity during 0600-1000 and 1100-1300 hrs as compared to scotophase activity during 0000-0400 and 2200-2400 his. S. aegrotata larvae were active ca. 421 minutes of the day with greater activity during the scotophase period. en_US
dc.format.extent 6 pages en_US
dc.publisher Hawaiian Entomological Society en_US
dc.title Modified Ultrsonic Actograph for Monitoring Activity of Lepidopterous Larvae en_US
dc.type Article en_US
dc.type.dcmi Text en_US

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