THE EFFECT OF ALTERNATING TEMPERATURE ON VERTEBRAL COUNT IN THE MEDAKA (ORYZIAS LATIPES)
Eggs reared at different sustained temperatures ranging from 20° to 34 °C produced young with vertebral counts progressively lower at higher temperatures. Eggs transferred from 20° to 30° 2 days after fertilization produced significantly fewer vertebrae, and eggs transferred 6 days after fertilization produced significantly more vertebrae than did those reared at either sustained temperature. Eggs subject to temperatures alternating between 22° and 30° every 12 hours throughout development produced intermediate counts, corresponding to those resulting from sustained rearing at 26°, and showed the highest survival and no abnormalities.
2013 ◽
Vol 36
(5)
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pp. 983-986
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2021 ◽
Vol 767
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pp. 144379
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2012 ◽
Vol 11
(3)
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pp. 2200-2246
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