Abstract
An experiment on acceleration and retardation of ontogeny with thyroid manipulation has revealed direct changes in definitive dentition of pharyngeal bones in Abramis brama bream. As development rate accelerates, the number of teeth reduces to the formula 5-4. When development rate is retarded, this number increases to the formula 6-5. Moreover, an additional minor row of teeth (1.6–5.1, 2.6–5.2) is formed. The observed changes in tooth numbers exceed the known variability in natural populations of bream. It is assumed that heterochronies lead to the changes in the number of teeth.
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Original Russian Text © A.A. Bolotovskiy, B.A. Levin, 2011, published in Ontogenez, 2011, Vol. 42, No. 3, pp. 172–177.
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Bolotovskiy, A.A., Levin, B.A. Influence of development rate on pharyngeal teeth formula in Abramis brama (L.) bream: Experimental cata. Russ J Dev Biol 42, 143–147 (2011). https://doi.org/10.1134/S1062360411030039
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DOI: https://doi.org/10.1134/S1062360411030039