Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3912
Title: CIRCANNUAL RHYTHMS IN THE ACTIVITY OF THE PARATHYROID-GLAND AND ULTIMOBRANCHIAL BODY CELLS OF THE FROG RANA-TEMPORARIA (ANURA, AMPHIBIA)
Authors: GEVAERTS, Hugo 
Issue Date: 1991
Publisher: ASSOCIATED CHRONOBIOLOGIA RESEARCHERS
Source: CHRONOBIOLOGIA, 18(1). p. 21-30
Abstract: The annual activity of the parathyroid gland cells and those of the ultimobranchial body cells of the frog Rana temporaria is quantitatively investigated by a morphometric study. A cosinor analysis shows a periodic succession of different parameters. The secretory activity of the parathyroid cells starts after a maximal value of external temperature in July. This activity is followed by an increase of plasma calcium which seems to induce the activity of the ultimobranchial cells.
Notes: GEVAERTS, H, LIMBURGS UNIV CENTRUM,DEPT SBM,B-3590 DIEPENBEEK,BELGIUM.
Keywords: AMPHIBIA; CIRCANNUAL; FROG; MORPHOMETRY; PARATHYROID GLAND; PLASMA CALCIUM; RANA; SEASONAL CYCLE; ULTIMOBRANCHIAL BODY
Document URI: http://hdl.handle.net/1942/3912
ISI #: A1991FM12100003
Type: Journal Contribution
Appears in Collections:Research publications

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