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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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