Secretion by the nasal salt glands of two insectivorous lizard species is initiated by an ecologically relevant dietary ion, chloride

Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
L C HazardStephanie Zilinskis

Abstract

Salt glands are used by some vertebrates to excrete hyperosmotic NaCl or KCl solutions in response to dietary salt loads. Control of secretion varies across taxa; some secrete in response to osmotic challenges while others secrete in response to specific dietary ions. We hypothesized that differences in control could be related to different diet-related selective pressures on herbivorous, marine, and insectivorous species. We studied control of secretion and flexibility of cation (sodium or potassium) and anion (chloride or bicarbonate) secretion in two insectivorous lizard species, Schneider's skinks (Eumeces schneideri, Scincidae) and green anoles (Anolis carolinensis, Polychrotidae). Lizards were injected daily for four days with combinations of cations (potassium, sodium, and histidine control) and anions (chloride and acetate control), isoosmotic saline, or sham injection. Secretions were collected daily and analyzed for sodium, potassium, and chloride. Both species secreted only in response to chloride; sodium appeared to have a slight inhibitory effect. Regardless of cation load, skinks secreted a combination of potassium and sodium, while anoles secreted solely potassium. In both species, total cation secretion was matc...Continue Reading

References

Apr 1, 1974·Comparative Biochemistry and Physiology. A, Comparative Physiology·W A Dunson
Mar 1, 1972·Comparative Biochemistry and Physiology. A, Comparative Physiology·J E Minnich
Jul 1, 1972·Comparative Biochemistry and Physiology. A, Comparative Physiology·V H ShoemakerS D Bradshaw
Apr 1, 1969·The American Journal of Physiology·W A Dunson
May 1, 1984·General and Comparative Endocrinology·S D BradshawS E Bunn
Aug 1, 1996·Pflügers Archiv : European journal of physiology·R Greger
Feb 28, 2001·Physiological and Biochemical Zoology : PBZ·L C Hazard

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Citations

Jul 19, 2015·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Jordi JanssenIgnas M A Heitkönig
Apr 28, 2021·Environmental Microbiome·Peter OsborneWilfried Haerty

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