1. Effect of Age on Respiration and Transpiration in the Boll Weevil, Anthonomus grandis1,2
- Author
-
E. P. Lloyd and D. N. Baker
- Subjects
Boll weevil ,Animal science ,Agronomy ,Anthonomus ,Insect Science ,Respiration ,Humidity ,Thermal death time ,Biology ,Respiration rate ,biology.organism_classification ,Indirect evidence ,Transpiration - Abstract
Respiration and transpiration rates in A. grandis Boheman were measured with an open-system technique. Windspeed and humidity had no effect on respiration rate. There was an increase in metabolic activity, as indicated by the respiration rate, with age at temperatures above 35°C. The thermal death point in the boll weevil was fixed at 54±2°C. There was a slight (2.5°C) increase increase with age in the thermal death point from 2 to 12 days. Indirect evidence of a spiracular response to high potential transpiration rates was obtained. There appears to be no systematic change in transpiration rate with age in the boll weevil.
- Published
- 1970