Continuation of studies on thermoregulation of fish and turtles in thermally stressed habitats. Annual progress report, 1 October 1978-30 September 1979 [electronic resource].
- Published
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1979.
- Physical Description
- Pages: 33 : digital, PDF file
- Additional Creators
- United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- A time dependent mathematical model accurately predicts heart, brain, and gut temperatures of largemouth bass. Body diameter, insulation thickness, and tissue thermal conductivity are controlling variables in the transfer of heat between a fish and water. Fish metabolic rate and water velocity across fish surfaces do not appreciably affect heat transfer rates. Multichannel temperature transmitters telemeter body temperatures of free swimming bass in Pond C on the Savannah River Plant while the behavior of those fish and other bass is recorded by an observer. Field studies of the home ranges and movements of turtles in Par Pond on the Savannah River Plant are completed. We have recorded the movements of 30 individuals fitted with radio transmitters. Distinct differences are apparent in the behavior of turtles in areas affected by heated effluents as compared to those in control areas. Calculations and theoretical analysis of the transient energy exchange of turtles are continuing. Laboratory experiments using /sup 133/Xe indicate that blood flow in the muscles and skin of alligators increases 2 to 6 fold during movement. Relative variation is similar in magnitude to that seen in human muscle. Evaporative water loss from alligators decreases as body size increases. The ratios of respiratory to cutaneous water loss are 1.80 at 5/sup 0/C, 1.18 at 25/sup 0/C and 0.85 at 35/sup 0/C. Boundary layer resistances to evaporative water loss are 6 fold less than predicted by calculations of aerodynamic boundary layers. Body size is a primary factor in determining the thermoregulatory strategy that is to be used by a given animal.Operative environmental temperatures (T/sub e/) are as high as 60/sup 0/C for a turtle basking on a log in the sun. In a rainstorm T/sub e/ drops to 18/sup 0/C. Experiments to measure T/sub e/ for turtles in normal and thermally affected areas are now continuing on the Savannah River Plant. (ERB)
- Report Numbers
- E 1.99:coo-2502-16
coo-2502-16 - Subject(s)
- Other Subject(s)
- Alligators
- Thermoregulation
- Behavior
- Temperature Dependence
- Blood Flow
- Body Temperature
- Fishes
- Thermal Pollution
- Biological Effects
- Mathematical Models
- Turtles
- Ambient Temperature
- Cooling Ponds
- Experimental Data
- Home Range
- Isolated Values
- Muscles
- Savannah River Plant
- Skin
- Telemetry
- Temperature Measurement
- Animals
- Aquatic Organisms
- Body
- Communications
- Control
- Data
- Data Forms
- Data Transmission
- Information
- National Organizations
- Numerical Data
- Organs
- Pollution
- Ponds
- Reptiles
- Surface Waters
- Temperature Control
- Us Aec
- Us Doe
- Us Erda
- Us Organizations
- Vertebrates
- Water Reservoirs
- Note
- Published through SciTech Connect.
06/01/1979.
"coo-2502-16"
Spotila, J.R.
State Univ. Coll., Buffalo, NY (USA) - Funding Information
- EY-76-S-02-2502
View MARC record | catkey: 13814962