PMID: 9548654Apr 21, 1998Paper

Regulation of water and sodium balance in the field by Australian honeyeaters (Aves: Meliphagidae)

Physiological Zoology
D L Goldstein, S D Bradshaw

Abstract

We evaluated the use of water and sodium by free-living individuals of several species of Australian honeyeaters (Acanthorhynchos superciliosus, Phylidonyris novaehollandiae, Phylidonyris nigra, Manorina flavigula, and Anthochaera carunculata). Water and Na fluxes were highly variable between species, largely reflecting differences in diet. Water fluxes ranged from approximately 300% of total body water per day in 10-g, nectarivorous A. superciliosus to approximately 45% of total body water per day, typical of a desert species, in M. flavigula, a 50-g, insectivorous, arid-zone bird. Similarly, Na fluxes ranged from nearly 60% of Na pool per day in A. superciliosus to about 25% per day in M. flavigula. Despite these different fluxes, values of regulated osmoregulatory variables, including plasma osmolality, hematocrit, plasma concentrations of Na+ and K+, and exchangeable Na pool, were relatively invariant both between species and within species at different seasons. In contrast, values of variables reflecting the operation of regulatory systems did differ between species and seasons. Urine concentrations were highest in M. flavigula and, in A. carunculata, varied seasonally (higher in summer than winter). Plasma concentrations ...Continue Reading

Citations

Jun 30, 2010·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Cromwell PurchaseSusan Nicolson
Dec 13, 2012·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Cromwell PurchasePatricia A Fleming
Sep 17, 2004·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·D A GrayS W Nicolson
Apr 24, 2019·Evolution; International Journal of Organic Evolution·Petter Z MarkiJon Fjeldså
Oct 24, 2008·American Journal of Physiology. Renal Physiology·Bradley Hartman BakkenCarlos Martínez Del Rio
Jan 9, 2003·The Journal of Experimental Biology·Todd J McWhorterBerry Pinshow
Aug 12, 2003·The Journal of Experimental Biology·Darin C Bennett, Maryanne R Hughes

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