Lack of gonadotrophin-releasing hormone (GnRH) neuron response to decreasing photoperiod in thyroidectomized male starlings (Sturnus vulgaris)

Journal of Experimental Zoology

Volumn 287, Issue 1, 2000, Pages 74-79

  Bentley, George E ^a,c   Dawson, Alistair ^b   Goldsmith, Arthur R ^a  

^a UNIVERSITY OF BRISTOL   (United Kingdom)

^b CENTRE FOR ECOLOGY AND HYDROLOGY   (United Kingdom)

^c JOHNS HOPKINS UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GONADORELIN;

ANIMAL; ARTICLE; BIRD; CELL COUNT; CYTOLOGY; FLUORESCENT ANTIBODY TECHNIQUE; HISTOLOGY; IMAGE PROCESSING; MALE; MEDIAN EMINENCE; METABOLISM; NERVE CELL; ORGAN SIZE; PHOTOPERIODICITY; PHYSIOLOGY; TESTIS; THYROID GLAND; THYROIDECTOMY;

ANIMALS; BIRDS; CELL COUNT; FLUORESCENT ANTIBODY TECHNIQUE, INDIRECT; GONADOTROPIN-RELEASING HORMONE; IMAGE PROCESSING, COMPUTER-ASSISTED; MALE; MEDIAN EMINENCE; NEURONS; ORGAN SIZE; PHOTOPERIOD; TESTIS; THYROID GLAND; THYROIDECTOMY;

ANIMALIA; AVES; POA; STURNIDAE; STURNUS VULGARIS;

EID: 0034659723     PISSN: 0022104X     EISSN: None     Source Type: Journal    
DOI: 10.1002/1097-010X(20000615)287:1<74::AID-JEZ9>3.0.CO;2-R     Document Type: Article

References (20)

1. Bentley GE. 1997. Thyroxine and photorefractoriness in starlings. Poult Avian Biol Rev 8:123-139.
2. Bentley GE, Bonser RHC. 1998. Long-term hypothyroidism causes decreased bone competence in male European starlings, Sturnus vulgaris. J Exp Zool 281:602-607.
3. Bentley GE, Goldsmith AR, Juss TS, Dawson A. 1997a. The effects of nerve growth factor and anti-nerve growth factor antibody on the neuroendocrine reproductive system in the European starling, Sturnus vulgaris. J Comp Physiol A 181: 133-141.
4. Bentley GE, Goldsmith AR, Dawson A, Glennie LM, Talbot RT, Sharp PJ. 1997b. Photorefractoriness in European starlings (Sturnus vulgaris) is not dependent upon the long-day-induced rise in plasma thyroxine. Gen Comp Endocrinol 107:428-438.
5. Bluhm CK, Schwabl H, Perera A, Follett BK, Goldsmith AR, Gwinner E. 1991. Variation in hypothalamic gonadotrophin-releasing hormone content, plasma and pituitary LH, and in-vitro testosterone release in a long-distance migratory bird, the garden warbler (Sylvia borin), under constant photoperiods. J Endocrinol 128:339-345.
6. Boulakoud MS, Goldsmith AR. 1991. Thyroxine treatment induces changes in hypothalamic gonadotrophin-releasing hormone characteristic of photorefractoriness in starlings (Sturnus vulgaris). Gen Comp Endocrinol 82:78-85.
7. Dawson A. 1993. Thyroidectomy progressively renders the reproductive system of starlings (Sturnus vulgaris) unresponsive to changes in day length. J Endocrinol 139:51-55.
8. Dawson A. 1998. Thyroidectomy of house sparrows (Passer domesticus) prevents photo-induced testicular growth but not the increased hypothalamic gonadotrophin-releasing hormone. Gen Comp Endocrinol 110:196-200.
9. Dawson A, Goldsmith AR. 1997. Changes in gonadotrophin-releasing hormone (GnRH-I) in the pre-optic area and median eminence of starlings (Sturnus vulgaris) during the recovery of photosensitivity and during photostimulation. J Reprod Fertil 111:1-6.
10. Dawson A, Follett BK, Goldsmith AR, Nicholls TJ. 1985. Hypothalamic gonadotrophin-releasing hormone and pituitary and plasma FSH and prolactin during photostimulation and photorefractoriness in intact and thyroidectomized starlings (Sturnus vulgaris). J Endocrinol 105:71-77.
11. Foster RG, Plowman G, Goldsmith AR, Follett BK. 1987. Immunohistochemical demonstration of marked changes in the LHRH system of photosensitive and photorefractory European starlings (Sturnus vulgaris). J Endocrinol 115:211-220.
12. Goldsmith AR, Nicholls TJ. 1984a. Changes in plasma prolactin in male starlings during testicular regression under short days compared with those during photorefractoriness. J Endocrinol 102:353-356.
13. Goldsmith AR, Nicholls TJ. 1984b. Thyroidectomy prevents the development of photorefractoriness and the associated rise in plasma prolactin in starlings. Gen Comp Endocrinol 54:256-263.
14. Goldsmith AR, Ivings WE, Pearce-Kelly AS, Parry DM, Plowman G, Nicholls TJ, Follett BK. 1989. Photoperiodic control of the development of the LHRH neurosecretory system of European starlings (Sturnus vulgaris) during puberty and the onset of photorefractoriness. J Endocrinol 122:255-268.
15. Hahn TP, Ball GF. 1995. Changes in brain GnRH associated with photorefractoriness in house sparrows (Passer domesticus). Gen Comp Endocrinol 99:349-363.
16. Nicholls TJ, Goldsmith AR, Dawson A. 1988. Photorefractoriness in birds and comparison with mammals. Physiol Rev 68:133-176.
17. Saldanha CJ, Deviche PJ, Silver R. 1994. Increased VIP and decreased GnRH expression in photorefractory dark-eyed Juncos Junco hyemalis. Gen Comp Endocrinol 93:128-136.
18. Wieselthier AS, van Tienhoven A. 1972. The effect of thyroidectomy on testicular size and on the photorefractory period in the starling (Sturnus vulgaris L.). J Exp Zool 179: 331-338.
19. Wilson, F.E., and B.D. Reinert. 1993. The thyroid and photoperiodic control of seasonal reproduction in American tree sparrows (Spizella arborea). J Comp Physiol B 163:563-573.
20. Woitkewitsch AA. 1940. Dependence of seasonal periodicity in gonadal changes on the thyroid gland in Sturnus vulgaris L. Comptes Rendus (Doklady) de l'Academie des Sciences de l'URSS 27:741-745.