Evaluation of morphological indices and total body electrical conductivity to assess body composition in big brown bats

• Autorzy: Pearce R.D. , O'Shea T. J. , Wunder B. A.
• Języki publikacji: EN

Abstrakty

EN

Bat researchers have used both morphological indices and total body electric conductivity (TOBEC) as proxies for body condition in a variety of studies, but have typically not validated these indices against direct measurement of body composition. We quantified body composition (total carcass lipids) to determine if morphological indices were useful predictors of body condition in big brown bats (Eptesicus fuscus). We also evaluated body composition indirectly by TOBEC using EM-SCAN® technology. The most important predictors of body composition in multiple regression analysis were body mass-to-forearm ratio (partial r2 = 0.82, P < 0.001) followed by TOBEC measurement (partial r2 = 0.08, P < 0.001) and to a minor extent head length (partial r2 = 0.02, P < 0.05). Morphological condition indices alone may be adequate for some studies because of lower cost and effort. Marking bats with passive integrated transponder (PIT) tags affected TOBEC measurements.

Słowa kluczowe

EN

morphological index; body mass; electrical conductivity; body composition; big brown bat; bat; body condition; Eptesicus fuscus; fat; lipid deposition

• Wydawca: -
• Czasopismo: Acta Chiropterologica
• Rocznik: 2008
• Tom: 10
• Numer: 1
• Opis fizyczny: p.153-159,fig.,ref.

Twórcy

autor

Pearce R.D.

• Department of Biology, Colorado State University, Fort Collins, 8052 CO, USA

autor

O'Shea T. J.

• U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Ave., Bldg. C, Fort Collins, 80526-8118 CO, USA

autor

Wunder B. A.

• Department of Biology, Colorado State University, Fort Collins, 8052 CO, USA

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