Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Effect of Light Intensity and Air Humidity on Flight Initiation in Blastophagus piniperda L. (Col. Scolytidae)

Effect of Light Intensity and Air Humidity on Flight Initiation in Blastophagus piniperda L.... <jats:sec><jats:title>Abstract</jats:title><jats:p>The spontaneous take-off activity of Blastophagus piniperda was investigated at light intensities of 0.I, I, I0, I00, and I000 lux at a constant temperature of 25°C. and at an air humidity of 77 % R.H. The effect of air humidity (o %, 77 %, and (00 % R.H.) on the take-off rate was studied in spring specimens only. At the low light intensities of 0.I and I lux the cake-off rates were clearly lower than at the higher light intensities of I00 and I000 lux. At all light intensities there were marked seasonal differences in the take-off rate. At each light ntensity the rate was clearly higher in the specimens of the new generation in July than in the spring specimens. At the high light intensities of I00 and I000 lux, and at I0 lux in July, the high rate of take-off activity remained relatively constant throughout the I5-minute experimental period. At the low light intensities the take-off rate was very low in the early part of the experiment, but with time the rate increased considerably. Thus the initial inhibitory effect of very low light intensity is rapidly abolished, probably by adaptation. In the beginning of the I5-minute experiments the take-off rate is high at the air humidity of I00 % R.H., low in the dry air of nearly o % R.H., and intermediate at 77 % R.H. After the first 3-minute period these differences are largely abolished.</jats:p> </jats:sec> http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Insect Systematics & Evolution Brill

Effect of Light Intensity and Air Humidity on Flight Initiation in Blastophagus piniperda L. (Col. Scolytidae)

Download PDF
6 pages

Loading next page...
 
/lp/brill/effect-of-light-intensity-and-air-humidity-on-flight-initiation-in-8bKdH5GIZC

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Brill
Copyright
© 1970 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
1399-560X
eISSN
1876-312X
DOI
10.1163/187631270X00320
Publisher site
See Article on Publisher Site

Abstract

<jats:sec><jats:title>Abstract</jats:title><jats:p>The spontaneous take-off activity of Blastophagus piniperda was investigated at light intensities of 0.I, I, I0, I00, and I000 lux at a constant temperature of 25°C. and at an air humidity of 77 % R.H. The effect of air humidity (o %, 77 %, and (00 % R.H.) on the take-off rate was studied in spring specimens only. At the low light intensities of 0.I and I lux the cake-off rates were clearly lower than at the higher light intensities of I00 and I000 lux. At all light intensities there were marked seasonal differences in the take-off rate. At each light ntensity the rate was clearly higher in the specimens of the new generation in July than in the spring specimens. At the high light intensities of I00 and I000 lux, and at I0 lux in July, the high rate of take-off activity remained relatively constant throughout the I5-minute experimental period. At the low light intensities the take-off rate was very low in the early part of the experiment, but with time the rate increased considerably. Thus the initial inhibitory effect of very low light intensity is rapidly abolished, probably by adaptation. In the beginning of the I5-minute experiments the take-off rate is high at the air humidity of I00 % R.H., low in the dry air of nearly o % R.H., and intermediate at 77 % R.H. After the first 3-minute period these differences are largely abolished.</jats:p> </jats:sec>

Journal

Insect Systematics & Evolution – Brill

Published: Jan 1, 1970

There are no references for this article.