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The hypothalamo-hypophysial neurosecretory system of the white-crowned sparrow, Zonotrichia leucophrys gambelii

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Summary

  1. 1.

    The North American fringillid finch, Zonotrichia leucophrys gambelii, has a well developed hypothalamic neurosecretory system.

  2. 2.

    Compared with the nucleus supraopticus, the nucleus paraventricularis is poorly developed and poor in neurosecretory material.

  3. 3.

    The median eminence can contain so much neurosecretory material that it may be regarded as a depot of such material second only to the neurohypophysis.

  4. 4.

    The nucleus supraopticus contains already in the nestling a considerable quantity of neurosecretory material; however, the neurosecretory content of the neurohypophysis is quite low. In the median eminence of the nestling there are only scattered neurosecretory granules.

  5. 5.

    In early summer the neurosecretory hypothalamic nuclei and the median eminence contain only very small amounts of neurosecretory material. However in autumn, when the birds are refractory to photoperiodic stimulation, there are very extensive accumulations of neurosecretory material. The ganglionic cells, in which the numerous neurosecretory granules are stored, appear to be relatively inactive in late spring.

  6. 6.

    Birds which had been held since late-autumn or winter on short daily photoperiods of 8 hours, also in spring and early summer, had large amounts of neurosecretory material in the cells of the hypothalamic nuclei and in the median eminence.

  7. 7.

    During June–August, with birds held since previous autumn on 8-hour days, the increase of the daily photoperiod from 8 hours to 20 hours caused, in 20 days, a marked increase in testicular weight and body weight. Simultaneously there was a decrease in the amount of neurosecretory material in the cells of the hypothalamic nuclei and especially in the median eminence whereas the quantity of neurosecretory material in the neurohypophysis appeared to be unaffected. The reduced quantity of neurosecretory material in the median eminence was particularly noticeable during the second half of the daily photoperiod. During the dark period in the 20-hour birds, as well as in the 8-hour birds and birds on natural photoperiod, there was a reaccumulation of neurosecretory material.

  8. 8.

    From December to February the response to increases in daily photoperiod are not as pronounced as in spring; the 8-hour and 20-hour birds have no observable differences in the neurosecretory picture.

  9. 9.

    Osmotic stress by addition of NaCl to the drinking water causes in the nucleus supraopticus and the nucleus paraventricularis a marked increase in nuclear volume and an increase in the formation of neurosecretory material. Simultaneously there is a depletion of the store of neurosecretory material in the neurohypophysis.

  10. 10.

    The increase in body weight, which follows the increase in daily photoperiod, is the result primarily of an extensive deposition of subcutaneous and visceral fat. This is the result of a hyperphagia and an alteration in intermediary metabolism in which glycogen storage in the liver is extensively reduced.

  11. 11.

    In early summer (June) the median eminence of the castrates of both sexes had substantially more neurosecretory material than those of the control birds. However, in autumn there were no apparent differences between castrates and normal birds, because of the increased neurosecretory material in the latter.

  12. 12.

    The causes and significance of these observations in respect to hypothalamic control of the endocrine system are discussed.

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References

  • Aschoff, J.: Jahresperiodik der Portpflanzung bei Warmblütern. Studium gen. 8, 742–766 (1955).

    Google Scholar 

  • Bargmann, W.: Das Zwischenhirn-Hypophysensystem. Berlin-Göttingen-Heidelberg: Springer 1954.

    Google Scholar 

  • —: Elektronenmikroskopische Untersuchungen an der Neurohypophyse. 2. Internat. Symposium über Neurosekretion, Lund, 1957, S. 4–12. Berlin-Göttingen-Heidelberg: Springer 1958.

    Google Scholar 

  • Bargmann, W., u. K. Jakob: Über Neurosekretion im Zwischenhirn der Vögel. Z. Zellforsch. 36, 556–562 (1952).

    Google Scholar 

  • Bargmann, W., u. A. Knoop: Elektronenmikroskopische Beobachtungen an der Neurohypophyse. Z. Zellforsch. 46, 242–251 (1957).

    Google Scholar 

  • Bargmann, W., A. Knoop u. A. Thiel: Elektronenmikro-skopische Studien an der Neurohypophyse von Tropidonotus natrix. Z. Zellforsch. 47, 114–126 (1957).

    Google Scholar 

  • Barrnett, R. J., and R. O. Greep: Regulation of secretion of adrenotropic and thyreotropic hormones after stalk section. Amer. J. Physiol. 167, 569–575 (1951).

    Google Scholar 

  • Becher, H.: Über ein vegetatives, zentralnervöses Kerngebiet in der Netzhaut des Menschen und der Säugetiere. Acta neuroveg. (Wien) 8, 421–436 (1954).

    Google Scholar 

  • Benoit, J.: Reproduction caractères sexuels et hormones — déterminisme du cycle sexuel saisonnier. In: Traité de Zoologie, tome XV. Paris: Masson & Cie. 1950.

    Google Scholar 

  • Benoit, J., et I. Assenmacher: Action des facteurs externes et plus particulièrement du facteur lumineux sur l'activité sexuelle des oiseaux. II. Réun. des Endocrinologistes de Langue Française, p. 33–80, 1953a.

  • Benoit, J., et I. Assenmacher: Rapport entre la stimulation sexuelle préhypophysaire et la neurosécrétion chez l'oiseau. Arch. Anat. mier. Morph. exp. 42, 334–385 (1953b).

    Google Scholar 

  • —: Le controle hypothalamique de l'activité préhypophysaire gonadotrope. J. Physiol. (Paris) 47, 427–567 (1955).

    Google Scholar 

  • Benoit, J., P. Mandel, I. Assenmacher et F. X. Walter: Sensibilité testiculaire aux hormones gonadotropes hypophysaires, chez le canard domestique, au cours de la period de régression testiculaire saisonnière. C. R. Soc. Biol. (Paris) 144, 1400–1403 (1950).

    Google Scholar 

  • Blümcke, S.: Zur Frage einer Nervenfaserverbindung zwischen Retina und Hypothalamus. Z. Zellforsch. 48, 261–282 (1958).

    Google Scholar 

  • Bogdanove, E. M., and N. S. Halmi: Effects of hypothalamic lesions and subsequent propylthiouracil treatment on pituitary structure and function in the rat. Endocrinology 50, 274–292 (1953).

    Google Scholar 

  • Burger, J. W.: A review of experimental investigations on seasonal reproduction in birds. Wilson Bull. 61, 211–230 (1949).

    Google Scholar 

  • Donovan, B. T., and G. W. Harris: Neurohumoral mechanism in reproduction. Brit. med. Bull. 11, 93–97 (1955).

    Google Scholar 

  • —: The effect of pituitary stalk section on light induced oestrus in the ferret. J. Physiol. (Lond.) 131, 102–114 (1956).

    Google Scholar 

  • Duncan, D.: An electron microscope study of the neurohypophysis of a bird, Gallus domesticus. Anat. Rec. 125, 457–471 (1956).

    Google Scholar 

  • Eulig, H.-G., u. W. Mond: Der Einfluß der Fixierung auf das Kernvolumen. Z. wiss. Mikr. 61, 201–209 (1953).

    Google Scholar 

  • Farner, D. S.: Northward transequatorial migration of birds. Sci. Rev. (New Zealand) 12, 29–30 (1954).

    Google Scholar 

  • —: The annual stimulus for migration. In: Recent studies in avian biology. Urbana: Univ. Illinois Press 1955.

    Google Scholar 

  • —: The avian photoperiodic testicular response and the function of the hypothalamo-hypophysial axis. Physiologist 1, 26 (1957).

    Google Scholar 

  • —: A breeding population of Zonotrichia leucophrys gambelii in the northern Cascade mountains of Washington. Condor 60, 196 (1958).

    Google Scholar 

  • - Photoperiodism in animals with special reference to avian testicular cycles. In: Photobiology. Oregon State College Biology Colloquium, p. 17–29. 1959a.

  • - Photoperiodic control of annual gonadal cycles in birds. In: Photoperiodism and related phenomena in plants and animals. Amer. Ass. Adv. Sci. Publ. 65, 717–750 (1959b).

  • Farner, D. S., and I. O. Buss: Summer records of the goldencrowned sparrow in Okanogan County, Washington. Condor 59, 141 (1957).

    Google Scholar 

  • Farner, D. S., and L. R. Mewaldt: The relative roles of photoperiod and temperature in gonadal recrudescence in male Zonotrichia leucophrys gambelii. Anat. Rec. 113, 612 (1952).

    Google Scholar 

  • —: The natural termination of the refractory period in the white-crowned sparrow. Condor 57, 112–116 (1955a).

    Google Scholar 

  • —: Is increased activity or wakefulness an essential element in the mechanism of photoperiodic responses of avian gonads. Northw. Sci. 29, 53–65 (1955b).

    Google Scholar 

  • Farner, D. S., L. R. Mewaldt and S. D. Irving: The roles of darkness and light in the photoperiodic, response of testes of white-crowned sparrows. Biol. Bull. 105, 434–441 (1953).

    Google Scholar 

  • Farner, D. S., and A. C. Wilson: A quantitative examination of testicular growth in the white-crowned sparrow. Biol. Bull. 113, 254–267 (1957a).

    Google Scholar 

  • —: The relation of single daily photoperiods to numerous repetitive photoperiods in testicular development in the white-crowned sparrow. Minerva fisioter. (Torino) 2, 78 (1957b).

    Google Scholar 

  • Fiske, V. M., and R. O. Greep: Neurosecretory activity in rats under conditions of continuous light or darkness. Endocrinology 64, 175–185 (1959).

    Google Scholar 

  • Fleischhauer, K.: Untersuchungen am Ependym des Zwischen- und Mittelhirns der Landschildkröte (Testudo graeca). Z. Zellforsch. 46, 729–767 (1957).

    Google Scholar 

  • —: Über die Feinstruktur der Faserglia. Z. Zellforsch. 47, 548–556 (1958).

    Google Scholar 

  • Gaunt, R., Ch. W. Lloyd and J. J. Chart: The adrenal neurohypophysial interrelationship in the neurohypophysis. Proceedings of the 8. Symposium of the Colston Research Society 1956, p. 233–249. New York: Academic Press 1957.

    Google Scholar 

  • Goslar, H. G., u. F. Tischendorf: Das cytologische Verhalten der „vegetativen“, insbesondere der hypothalamischen Areale des Stammhirnes von Tinca vulgaris gegenüber Beizenfärbungen. Z. mikr.-anat. Forsch. 61, 183–228 (1955).

    Google Scholar 

  • Greer, M. A.: Evidence of hypothalamic control of the pituitary release of thyrotrophin. Proc. Soc. exp. Biol. (N. Y.) 77, 603–608 (1951).

    Google Scholar 

  • —: The role of the hypothalamus in the control of thyroid function. J. clin. Endocr. 12, 1259–1268 (1952).

    Google Scholar 

  • Grignon, G.: Développement du complexe hypothalamo-hypophysaire chez l'embryon de poulet. Nancy: Société d'impressions typographiques 1956.

  • Groot-Wassink, K. A.: Zur Frage eines hypothalamischen Überträgerstoffes mit Einfluß auf die gonadotrope Hypophysenvorder-lappen-Aktivität. Acta biol. med. german. 1, 459–470 (1958).

    Google Scholar 

  • Guillemin, R., H. R. Hearn, W. R. Cheek and D. E. Householder: Isolation from the hypothalamus of a substance which stimulates release of ACTH in vitro. Fed. Proc. 15, 84 (1956).

    Google Scholar 

  • Guillemin, R., and P. Rosenberg: Humoral hypothalamic control of anterior pituitary: a study with combined tissue cultures. Endocrinology 57, 599–607 (1955).

    Google Scholar 

  • Heinbecker, P.: The pathogenesis of hyperthyroidism. Ann. Surg. 130, 804 (1949).

    Google Scholar 

  • Hertl, M.: Brunstzeitige Kernschwellung im Tuber cinereum der weißen Maus. Morph. Jb. 92, 75–94 (1952).

    Google Scholar 

  • —: Das Verhalten einiger Hypothalamuskerne der weißen Maus während verschiedener Entwicklungs- und Funktionsphasen des weiblichen Genitalapparates. Z. Zellforsch. 42, 481–507 (1955).

    Google Scholar 

  • Horstmann, E.: Die Faserglia des Selachiergehirns. Z. Zellforsch. 39, 588–617 (1954).

    Google Scholar 

  • Høst, P.: The effect of light on the molts and sequence of plumages in the willow ptarmigan. Auk 59, 388–403 (1942).

    Google Scholar 

  • Ito, T., u. K. Oishi: Cytologische Untersuchungen der Zwischenhirndrüse von Bufo vulgaris japonicus. Okajimas Folia anat. jap. 23, 35–50 (1950).

    Google Scholar 

  • Jones, J. Ch.: Comparative aspects of adrenocortical neurohypophysial relationship. In: Neurohypophysis. Proc. of the 8. Symposium of the Colston Research Society 1956, p. 253–275. New York: Academic Press 1957.

    Google Scholar 

  • Kamemoto, F. I., A. Oksche, H. E. Cheyney and D. S. Farner: A photoperiodically induced alteration of intermediary metabolism in migratory birds. Anat. Rec. 131, 570 (1958).

    Google Scholar 

  • King, J. R.: Premigratory adiposity in the white-crowned sparrow (Zonotrichia leucophrys gambelii). Doctoral thesis. State College of Washington 1957.

  • King, J. R., and D. S. Farner: Bioenergetic basis of light-induced fat deposition in the white-crowned sparrow. Proc. Soc. exp. Biol. (N. Y.) 93, 354–359 (1956).

    Google Scholar 

  • Knoche, H.: Die Verbindung der Retina mit den vegetativen Zentren des Zwischenhirnes und mit der Hypophyse. Verh. Anat. Ges., Stockholm, 1956. Anat. Anz. Erg.-Bd. 103, 140–148 (1956).

    Google Scholar 

  • —: Die retino-hypothalamische Bahn von Mensch, Hund und Kaninchen. Z. mikr.-anat. Forsch. 63, 461–486 (1958a).

    Google Scholar 

  • —: Über die Ausbreitung und Herkunft der nervösen Nodulusfasern in Hypothalamus und Retina. Z. Zellforsch. 48, 602–616 (1958b).

    Google Scholar 

  • Kobayashi, H.: Acceleration of molting in the canary by reducing the daily photoperiod. Ann. zool. jap. 26, 156–161 (1953).

    Google Scholar 

  • —: Effects of lengthening daily light period on molting, thyroid and thyrotropin content of the pituitary body of the canary. Ann. zool. jap. 27, 19–21 (1954a).

    Google Scholar 

  • —: Failure of reduction of daily light period to induce molting in the canary between the end of September and the middle of May. Ann. zool. jap. 27, 63–70 (1954b).

    Google Scholar 

  • —: Loss of responsiveness of the sex gland to the stimulus of light and its relation to molting in the canary. Ann. zool. jap. 27, 128–137 (1954c).

    Google Scholar 

  • Krantz, H.: Reaktion der Zellkerne auf Narkotika. Z. Naturforsch. 2b, 428–433 (1947).

    Google Scholar 

  • Krantz, H.: Kern und Funktion. I. Die Kerngröße und ihre Abhängigkeit von äußeren und inneren Faktoren. Z. Zellforsch. 35, 425–475 (1951).

    Google Scholar 

  • Legait, H.: Corrélations endocriniennes de l'hypothalamus et de la neurohypophyse chez la Poule Rhode-Island. C. R. Soc. Biol. (Paris) 149, 1016–1018 (1955a).

    Google Scholar 

  • —: L'hydrencéphalocrinie neurosécrétoire chez la Poule Rhode-Island au cours du cycle annuel et dans diverses conditions expérimentales. C.R. Soc. Biol. (Paris) 149, 1459–1461 (1955b).

    Google Scholar 

  • —: Étude histophysiologique et expérimentale du système hypothalamo-neurohypophysaire de la Poule Rhode-Island. Arch. Anat. micr. Morph. exp. 44, 323–343 (1955c).

    Google Scholar 

  • —: Les voies efférentes des noyaux neurosécrétoires hypothalamiques chez les oiseaux. C. R. Soc. Biol. (Paris) 150, 996–998 (1956).

    Google Scholar 

  • —: A propos des formations cystiques des lobes antérieur, tubéraux et nerveux de l'hypophyse de la Poule. C. R. Soc. Biol. (Paris) 151, 158–161 (1957a).

    Google Scholar 

  • —: Corrélations hypothalamo-hypophyso-thyroidiennes chez la Poule Rhode Island. C. R. Soc. Biol. (Paris) 151, 760–763 (1957b).

    Google Scholar 

  • —: Contribution a l'étude morphologique et experimentale du système hypothalamo-neurohypophysaire de la Poule Rhode-Island. Thèse, Louvain. Nancy: S. I. T. 1959.

    Google Scholar 

  • Legait, H., et E. Legait: Modifications de structure du lobe distal de l'hypophyse au cours de la couvaison chez la Poule Rhode-Island. Essai d'interprétation de la valeur des deux types principaux de cellules cyanophiles. C. R. Assoc. Anat. (41e réunion) 84, 188–199 (1954).

    Google Scholar 

  • - Quelques aspects de la zone de contact du lobe distal de l'hypophyse et du lobe nerveux chez la Poule Rhode-Island. C. R. Assoc. Anat. (43e réunion) 862–866 (1956).

  • Lesher, S. W., and S. C. Kendeigh: Effect of photoperiod on molting of feathers. Wilson Bull. 53, 169–180 (1941).

    Google Scholar 

  • Macher, E.: Zellkernschwellungen der Nuclei supraopticus und paraventricularis bei Dursttieren. Verh. Anat. Ges. Marburg, 1952. Anat. Anz. Erg.-Bd. 99, 95–102 (1952).

    Google Scholar 

  • Martini, L.: Neurosecretion and stimulation of the adenohypophysis. 2. Internat. Symposium über Neurosekretion, Lund, 1957, S. 52–54. Berlin-Göttingen-Heidelberg: Springer 1958.

    Google Scholar 

  • McCann, S. M., and J. R. Brobeck: Evidence for a role of the supraoptico-hypophyseus system in regulation of adrenocorticotropin secretion. Proc. Soc. exp. Biol. (N. York) 87, 318–324 (1954).

    Google Scholar 

  • McGreal, R. D., and D. S. Farner: Premigratory fat deposition in the Gambel white-crowned sparrow. Northw. Sci. 30, 12–23 (1956).

    Google Scholar 

  • Mewaldt, L. R., and D. S. Farner: The composition of a wintering population of white-crowned sparrows in southeastern Washington. Condor 55, 313–314 (1953).

    Google Scholar 

  • Milin, R.: Die Wirkung des Lichtes auf den Hypophysenhinterlappen der Ratte. Verh. Anat. Ges., Freiburg i. Br., 1957. Anat. Anz. Erg.-Bd. 104, 191–198 (1958).

    Google Scholar 

  • Milin, R., and M. Ciglar: Die Wirkung der Dunkelheit auf den Hypophysenhinterlappen. Verh. Anat. Ges., Stockholm, 1956. Anat. Anz. Erg.-Bd. 103, 189–195 (1957).

    Google Scholar 

  • Miller, A. H.: The occurence and maintenance of the refractory period in crowned sparrows. Condor 56, 13–20 (1954).

    Google Scholar 

  • Mirsky, I. A.: Personal communication. In E. and B. Scharrer, Hormones produced by neurosecretory cells. Recent Progr. Hormone Res. 10, 183–240 (1954).

  • Oksche, A.: Diskussionsbemerkung. Verh. Anat. Ges., Münster, 1954. Anat. Anz. Erg.-Bd. 101, 181 (1955).

    Google Scholar 

  • —: Histologische Untersuchungen über die Bedeutung des Ependyms, der Glia und der Plexus chorioidei für den Kohlenhydratstoffwechsel des ZNS. Z. Zellforsch. 48, 74–129 (1958).

    Google Scholar 

  • Oksche, A., D. Laws and D. S. Farner: The daily photoperiod and neurosecretion in birds. Anat. Rec. 130, 433 (1958).

    Google Scholar 

  • Palay, S. L.: An electron microscope study of the neurohypophysis in normal, hydrated and dehydrated rats. Anat. Rec. 121, 348 (1955).

    Google Scholar 

  • Puff, A.: Über funktionelle Kernschwellungen an den Sinneszellen der Froschretina. Morph. Jb. 92, 60–74 (1952).

    Google Scholar 

  • —: Methode zur planimetrischen Kernvolumenbestimmung an uneinheitlichem Kernmaterial. Z. wiss. Mikr. 61, 210–212 (1953).

    Google Scholar 

  • Rowan, W.: On photoperiodism, reproductive periodicity, and the annual migration of birds and certain fishes. Proc. Boston Soc. nat. Hist. 38, 147–189 (1926).

    Google Scholar 

  • —: Experiments on bird migration I. Manipulation of the reproductive cycle. Proc. Boston Soc. nat. Hist. 39, 151–208 (1929).

    Google Scholar 

  • Saffran, M., A. V. Schally, M. Segal and B. Zimmerman: Characterization of the corticotrophin releasing factor of the neurohypophysis. 2. Internat. Symposium über Neurosekretion, Lund, 1957. Berlin-Göttingen-Heidelberg: Springer 1958.

    Google Scholar 

  • Scharrer, E., and Scharrer, B.: Hormones produced by neurosecretory cells. Recent Progr. Hormone Res. 10, 183–240 (1954a) Neurosekretion. In: v. Möllendorffs Handbuch der mikroskopischen Anatomie des Menschen, Bd. 6, Teil 5, S. 953–1066. Berlin-Göttingen-Heidelberg: Springer 1954b.

    Google Scholar 

  • Schildmacher, H.: Über die künstliche Aktivierung der Hoden einiger Vogelarten im Herbst durch Belichtung und Vorderlappenhormone. Biol. Zbl. 59, 653–657 (1939).

    Google Scholar 

  • —: Stoffwechselphysiologische Studien an männlichen Gartenrotschwänzen Phoenicurus ph. phoenicurus. Biol. Zbl. 71, 238–251 (1952).

    Google Scholar 

  • Spatz, H.: Das Hypophysen-Hypothalamus-System in seiner Bedeutung für die Fortpflanzung. Verh. Anat. Ges., Mainz, 1953. Anat. Anz. Erg.- Bd. 100, 46–86 (1954).

    Google Scholar 

  • —: Das Hypophysen-Hypothalamus-System mit besonderer Berücksichtigung der zentralen Steuerung der Sexualfunktionen. In: Zentrale Steuerung der Sexualfunktionen. Die Keimdrüsen des Mannes. Berlin-Göttingen-Heidelberg: Springer 1955.

    Google Scholar 

  • —: Die Proximale (supraselläre) Hypophyse, ihre Beziehungen zum Diencephalon und ihre Regenerationspotenz. Pathophysiologia Diencephalica. Internat. Symposion, Mailand, 1956. Wien: Springer 1958.

    Google Scholar 

  • Suomalainen, P.: Neurosekretion und Stress. 2. Internat. Symposium über Neuroskretion, Lund, 1957, S. 26–29. Berlin-Göttingen-Heidelberg: Springer 1958.

    Google Scholar 

  • Wilson, A. C.: Annual cycle of thyroid activity in Gambel's white-crowned sparrow. Master's thesis. State College of Washington, Pullman, 1957.

    Google Scholar 

  • Wingstrand, K. G.: The structure and development of the avian pituitary. Lund: Gleerup 1951.

    Google Scholar 

  • Wingstrand, K. G.: Neurosecretion and antidiuretic activity in chick embryos with remarks on the subcommissural organ. Ark. Zool. 6, 41–67 (1953).

    Google Scholar 

  • Wislocki, G. B., and E. H. Leduc: The cytology of the subcommissural organ, Reissner's fiber, periventricularglial cells and posterior collicular recess of the rat's brain. J. comp. Neurol. 101, 283–310 (1954).

    Google Scholar 

  • Wolfson, A.: The role of the pituitary, fat deposition and body weight in bird migration. Condor 47, 95–127 (1945).

    Google Scholar 

  • —: Body weight and fat deposition in captive white-throated sparrows in relation to the mechanics of migration. Wilson Bull. 66, 112–118 (1952).

    Google Scholar 

  • —: Production of repeated gonadal, fat, and molt cycles within one year in the junco and white-crowned sparrow. J. exp. Zool. 125, 353–376 (1954a).

    Google Scholar 

  • —: Weight and fat deposition in relation to spring migration in transient white-throated sparrows. Auk 71, 413–434 (1954b).

    Google Scholar 

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Authors and Affiliations

  1. Laboratories of Zoophysiology, Washington State University, Pullman, Washington

    Andreas Oksche, Donald F. Laws, Fred I. Kamemoto & Donald S. Farner

  2. Department of Anatomy, Albert Einstein College of Medicine, New York

    Andreas Oksche, Donald F. Laws, Fred I. Kamemoto & Donald S. Farner

  3. Anatomisches Institut der Universität Marburg a. d. Lahn, Deutschland

    Andreas Oksche, Donald F. Laws, Fred I. Kamemoto & Donald S. Farner

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  1. Andreas Oksche
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  2. Donald F. Laws
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  3. Fred I. Kamemoto
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  4. Donald S. Farner
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Investigations supported by a research grant from the National Science Foundation, and by funds made available by the State of Washington Initiative No. 171. Part of the investigations were carried out while the senior author was a Stipendiat des Deutschen Akademischen Austauschdienstes at Albert Einstein College of Medicine, New York; he wishes to acknowledge the kindness of Prof. E. Scharrer in making available the facilities of his laboratory. We wish to acknowledge the invaluable advice of Drs. E. and B. Scharrer. We are grateful to Miss E. Hauberg (Marburg) for the microphotographs. Some of the material was collected and prepared by Dr. L. P. Richards (Research Associate under grant from National Institutes of Health). A considerable portion of the karyometry was effected by Mr. Lesnick Westrum.

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Oksche, A., Laws, D.F., Kamemoto, F.I. et al. The hypothalamo-hypophysial neurosecretory system of the white-crowned sparrow, Zonotrichia leucophrys gambelii. Zeitschrift für Zellforschung 51, 1–42 (1959). https://doi.org/10.1007/BF00345075

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