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  • Life and Medical Sciences  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Hypothalamic neurosecretion in relation to water deprivation in ploceids of arid and swampy zones (1967)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 123 (1967), S. 35-41 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The effects of 72 hours of dehydration on the hypothalamo-neuro-hypophyseal system have been compared in three avian species which originate from different climatic habitats but belong to the same genus, Lonchura. In L. malacca, which is an inhabitant of swampy, non-arid regions, the neurosecretory nuclei are activated and there is a depletion of neurosecretory material from the nuclear regions and neurosecretory tract, as well as from the neurohypophysis. In L. punctulata, an inhabitant of woods and grasslands, the supraoptic cells show signs of activation. To some extent, a depletion of the neurosecretory material is observed from the neurohypophysis. In the fibrous layer the continuity of the neurosecretory material along the tract is not maintained to such an extent as in the control. In L. malabrica, which lives in semi-arid regions, there is some activation of the supraoptic nuclei but there is little to no depletion of the aldehyde fuchsin-positive material from the neurohypophysis and the tract leading to it. The results of this investigation are indicative of a correlation between the neurosecretory mechanism and ecologic adaptation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051230104
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  • 2
    Electronic Resource
    Electronic Resource
    Histomorphic changes following chronic adrenocortical activation and inhibition in the pigeon (1970)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 130 (1970), S. 257-269 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Gravimetric and histologic modifications in the pigeon were studied following chronic therapy with ACTH and metopirone (SU 4885) for a period of 15 days. The organs studied were proventriculus, duodenum, heart, kidney, salivary gland, pancreas, liver, uropygial gland, thymus, spleen, bursa fabricii, testis, ovary, islets of Langerhans, adenohypophysis, thyroid and interrenal and chromaffin tissue of the adrenal gland. Induced states of hyper- and hypoadrenocorticalism elicited pathomorphic changes in endocrine and reproductive systems and some other organs of the pigeon. There were many differences and similarities in the nature of response of some organs following the two experimental conditions. Many of these cellular interactions might have resulted from alteration of interrenal function in the pigeon.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051300210
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    Paper (German National Licenses)
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