Bat fat: body composition analysis by total body electrical conductivity in northern long-eared bats

Tomasi, Tom and Withers, Kerry W. and Day, Katie M. (2007) Bat fat: body composition analysis by total body electrical conductivity in northern long-eared bats. In: 87th Annual Meeting of the American Society of Mammalogists , 6-10 Jun 2007, Albuquerque, NM. USA.

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The ability to assess the 'condition' of small mammals in a non-invasive and non-stressful manner is important for understanding their natural history. More specifically, body condition is measured to determine if an animal is in positive or negative energy balance. Stored energy is a component of a total energy budget. One recent technology for assessing body condition is Total Body Electrical Conductivity (TOBEC). A TOBEC index should correlate with components of more traditional body composition analyses, such as body fat and lean mass. As part of our efforts to understand bat hibernation energetics, we made TOBEC measurements (EM-SCAN Model 3044) of northern long-eared bats (Myotis septentrionalis) to determine its accuracy and usefulness on animals of this size (6-8 g). The bats were then euthanized, dried to a constant mass, subjected to a Soxhlet fat extraction process, and re-dried to constant mass. Standard body composition parameters were calculated. A preliminary analysis of these data indicate no significant correlations between the raw TOBEC measurements and carcass lean wet mass, fat mass, or percent body fat. These animals may be too small for use of TOBEC in assessing their energy storage, although additional calculations and a larger sample size may prove useful.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: No
Item Status: Live Archive
Additional Information: This was an oral presentation only. Full paper not available.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 03 Jan 2014 06:08
Last Modified: 03 Jan 2014 06:08
Uncontrolled Keywords: bats; body condition; Total Body Electrical Conductivity; TOBEC; energy balance
Fields of Research : 06 Biological Sciences > 0608 Zoology > 060809 Vertebrate Biology
06 Biological Sciences > 0602 Ecology > 060203 Ecological Physiology
06 Biological Sciences > 0606 Physiology > 060602 Animal Physiology - Cell
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970106 Expanding Knowledge in the Biological Sciences

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