Renal and Extrarenal Sodium Excretion in the Common Tern Sterna hirundo

  title={Renal and Extrarenal Sodium Excretion in the Common Tern Sterna hirundo},
  author={M. Hughes},
  journal={Physiological Zoology},
  pages={210 - 219}
  • M. Hughes
  • Published 1968
  • Biology
  • Physiological Zoology
SINCE Schmidt-Nielsen, Jdrgensen, and Osaki (1958) described the osmoregulatory function of the nasal glands of marine birds, it has been generally accepted that these glands "secrete only when the bird is subject to an osmotic stress, for example, if sea water or sa.lty food is ingested" (Schmidt-Nielsen, 1963). There are two aspects of this notion which may be unwarranted. The first is that nasal gland activity results solely from osmotic stress incurred through the addition of osmotically… Expand
Functional maturation of the salt gland of the goose
A greater fraction of the administered water load was secreted by the salt gland at any time period compared to the fraction ofThe salt load secreted, indicating substantial cloacal excretion of the salt load. Expand
Osmoregulation in nestling California gulls at Mono Lake, California
Wales gulls, Larus californiens, on Krakatoa Islet, Mono Lake, California, had significantly greater Hct, plasma sodium, chloride, chloride and osmotic concentration, and salt gland weight and salt excretion compared to nestling glaucous-winged Gulls (GWG), L. glaucescens (Hughes, 1984), which nest under cooler, moister conditions. Expand
Cloacal and salt-gland ion excretion in the seagull, Larus glaucescens, acclimated to increasing concentrations of sea water.
  • M. Hughes
  • Chemistry, Medicine
  • Comparative biochemistry and physiology
  • 1970
It is suggested that Na and K may be extrarenally excreted even in the absence of imposed osmotic stress and that the cation concentration in the salt-gland secretion is dependent upon the magnitude of the osmosis stress. Expand
Osmoregulation in nestling glaucous-winged gulls
Nesting marine birds probably rely heavily on extrarenal secretion to excrete excess salt, and little has been reported about the rate of maturation of the secretory process or the factors that affect it in such nestlings. Expand
Hypertonic salt gland secretion in the glaucous-winged gull, Larus glaucescens, in response to stomach loading with dilute sodium chloride.
  • M. Hughes
  • Biology, Medicine
  • Comparative biochemistry and physiology. A, Comparative physiology
  • 1972
Hypertonic secretion was noted within 45 min of observation in four of eight nonloaded glaucous-winged gulls, Larus glaucescens, and was noted in nonloaded, 100 and 150 m-equivl. Expand
Observations on osmoregulation in glaucous-winged gulls, Larus glaucescens, following removal of the supraorbital salt glands
Removal of the salt (supraorbital) glands had little or no effect on survival time, hematocrit, plasma & cloacal ion & osmotic concns, body & tissue weights in saline adapted fledgling and/or adult Glaucous-winged Gulls, Larus glaucescens. Expand
The effects of salt water adaptation on the Australian black swan, Cygnus atratus (Latham).
  • M. Hughes
  • Chemistry, Medicine
  • Comparative biochemistry and physiology. A, Comparative physiology
  • 1976
In FW adult swans the first CF sample was obtained 90 min after the salt loading and in SW adults 4 min after loading, suggesting the FW swans absorbed the salt loads more completely and produced more SGS, but that SW swans allowed the loading solution to pass through the gut to be excreted as CF. Expand
Water and sodium transport across the jejunum of normal and sodium loaded domestic fowl (Callus domesticus)
Abstract 1. 1. Net water and sodium transport were measured in vitro in everted sacs of jejunum prepared from immature cockerels maintained on diets with normal or high sodium content. Plasma sodiumExpand
Effects of saline intake, sex, and season on Pekin duck osmoregulatory organ masses and comparison with wild Mallards
Osmoregulatory organ masses of freshwater Mallards (Anas platyrhynchos) do not differ between the sexes, but drinking saline induces changes that are sexually disparate in some organs. We examinedExpand
Dietary Salt as a Physiological Constraint in White Ibis Breeding in an Estuary
The experiments indicate that a physiological constraint acting on nestling ibis is responsible for the fact that ibis breeding in coastal colonies fly long distances inland to secure freshwater prey for their young. Expand


The few passerine birds that have a high salt tolerance, however, seem to represent an exception that may provide interesting material for the student of avian evolution. Expand
Nasal Salt Secretion in Falconiform Birds
Behavior and physiological aspects of nasal secretion in these raptors with reference to Schmidt-Nielsen's (1964) hypothesis regarding the general necessity for birds to utilize an extrarenal mechanism of salt excretion as an adjunct to efficient water reabsorption from the cloaca in concentrating uric acid are studied. Expand
Nasal Salt Excretion and the Possible Function of the Cloaca in Water Conservation
It is suggested that the extrarenal excretion of salts is related to the reabsorption of water in the cloaca, that it is necessary for the production of urine with a particularly low water content, and perhaps was prerequisite for the evolution of efficient cloacal water conservation. Expand
Extrarenal salt excretion in birds.
Investigations on cormorants (Phalacrocorax auritus) gave no evidence to support the hypothesis that sea birds must drink sea water in order to cover their normal needs for water. When the birds we...
Influence of External Stimuli on the Secretory Rate of the Avian Nasal Salt Gland
IT was noticed during a series of experiments dealing with the functional capacity of the salt gland of sea-gulls that an increase in secretion rate was occasionally associated with ‘alertness’Expand
  • G. Salt
  • Environmental Science, Medicine
  • Biological reviews of the Cambridge Philosophical Society
  • 1964
1. Many birds are capable of varying the rate of evaporative heat loss during respiration as a means of temperature regulation as a Means of Temperature regulation. Expand
The salt secretion of marine birds
  • Circulation
  • 1963