oa African Zoology - Seasonal and daily variation in blood and urine concentrations of free ranging Angolan free-tailed bats (Mops condylurus) in hot roosts in southern Africa

Volume 34, Issue 1
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



Urine and plasma concentrations and haematocrits were measured in free-ranging Angolan free-tailed bats (Mops condylurus) inhabiting thermally-challenging roosts in the Komatipoort region of South Africa. Samples were collected in both autumn and summer, from bats caught emerging from roosts before feeding (pre-feeding), and those returning after foraging (post-prandial). Post-prandial bats exhibited higher body fluid concentrations, but lower haematocrits, than individuals caught prior to feeding, reflecting raised excretory mineral and nitrogenous loads and replenishment of body water pools during nocturnal foraging.

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