Abstract
Monthly samples of 50 Acanthobrama terrae-sanctac each were collected in Lake Tiberias during the years 1963 and 1964 and their thyroids were sectioned and examined. Seasonal changes in the height of the thyroid epithelium were observed. Fluctuations of thyroid activity are divided into two phases in relation to spawning and water temperature: the non-spawning phase (from April to December)-in which cell height is positively correlated with water temperature, and the spawning phase (January-March)-in which the epithelium is invariably high although water temperature is lowest. It is possible that thyroid activity is correlated with the physical activity of the fish during spawning.
Original language | English |
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Pages (from-to) | 604-608 |
Number of pages | 5 |
Journal | General and Comparative Endocrinology |
Volume | 12 |
Issue number | 3 |
DOIs | |
State | Published - Jun 1969 |