scholarly journals Mortality of Dipetalogaster maximus (uhler) in response to temperature and humidity

1984 ◽  
Vol 17 (1) ◽  
pp. 13-16 ◽  
Author(s):  
Colin E. Johnson ◽  
Elaine F. Oakley ◽  
Philip D. Marsden
Keyword(s):  
Temperature Effect ◽  
Water Vapour ◽  
High Temperatures ◽  
Vapour Pressure ◽  
Survival Rates ◽  
Vapour Pressure Deficit ◽  
Field Conditions ◽  
Controlled Conditions ◽  
Temperature And Humidity ◽  
Response To Temperature

Observations were made on the mortality of Dipetalogaster maximus in relation to humidity and temperature in controlled conditions. The bugs survived longer at higher relative humidities and at lower temperatures, but when these results were plotted against vapour pressure déficit, no independent temperature effect was seen. The results may be explained by thefaster depletion of water reserves at higher vapour pressure deficits. D. maximus did not increase its resistance to water vapour transferat higher vapour pressure deficits. In orderto increase survival rates when D. maximus is used for xenodiagnosis in field conditions it should be protected against high temperatures and low humidities.

scholarly journals Artificially decreased vapour pressure deficit in field conditions modifies foliar metabolite profiles in birch and aspen

2016 ◽  
Vol 67 (14) ◽  
pp. 4367-4378 ◽  
Author(s):  
Jenna Lihavainen ◽  
Markku Keinänen ◽  
Sarita Keski-Saari ◽  
Sari Kontunen-Soppela ◽  
Anu Sõber ◽  
...  
Keyword(s):  
Vapour Pressure ◽  
Vapour Pressure Deficit ◽  
Field Conditions ◽  
Metabolite Profiles

Temperature effect on transpiration response of maize plants to vapour pressure deficit

2012 ◽  
Vol 78 ◽  
pp. 157-162 ◽  
Author(s):  
Zongjian Yang ◽  
Thomas R. Sinclair ◽  
Maggie Zhu ◽  
Carlos D. Messina ◽  
Mark Cooper ◽  
...  
Keyword(s):  
Temperature Effect ◽  
Vapour Pressure ◽  
Vapour Pressure Deficit ◽  
Maize Plants

scholarly journals Can birds do it too? Evidence for convergence in evaporative water loss regulation for birds and mammals

2017 ◽  
Vol 284 (1867) ◽  
pp. 20171478 ◽  
Author(s):  
E. C. Eto ◽  
P. C. Withers ◽  
C. E. Cooper
Keyword(s):  
Water Vapour ◽  
Water Loss ◽  
Vapour Pressure ◽  
Vapour Pressure Deficit ◽  
Ambient Air ◽  
Evaporative Water Loss ◽  
Water Vapour Pressure ◽  
Evaporative Heat Loss ◽  
Evaporative Water ◽  
Water Vapour Pressure Deficit

Birds have many physiological characteristics that are convergent with mammals. In the light of recent evidence that mammals can maintain a constant insensible evaporative water loss (EWL) over a range of perturbing environmental conditions, we hypothesized that birds might also regulate insensible EWL, reflecting this convergence. We found that budgerigars ( Melopsittacus undulatus ) maintain EWL constant over a range of relative humidities at three ambient temperatures. EWL, expressed as a function of water vapour pressure deficit, differed from a physical model where the water vapour pressure deficit between the animal and the ambient air is the driver of evaporation, indicating physiological control of EWL. Regulating EWL avoids thermoregulatory impacts of varied evaporative heat loss; changes in relative humidity had no effect on body temperature, metabolic rate or thermal conductance. Our findings that a small bird can regulate EWL are evidence that this is a common feature of convergently endothermic birds and mammals, and may therefore be a fundamental characteristic of endothermy.

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