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1. [Influence of development pace on pharyngeal teeth formula in Abramis brama (L.) bream: experimental data].

Author

Bolotovskii AA and Levin BA

Subjects
Animals, Antithyroid Agents pharmacology, Female, Fresh Water, Male, Pharynx drug effects, Pharynx embryology, Russia, Tooth embryology, Cyprinidae embryology, Tooth drug effects, Triiodothyronine pharmacology
Abstract

An experiment on acceleration and retardation of ontogenesis with thyroid manipulation has revealed direct changes in definitive dentition of pharyngeal bones in Abramis brama bream. As development pace accelerates, the number of teeth reduces to the formula 5-4. When development pace slows down, 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 transcend typical changes happening in nature. It is assumed that heterochronies provoke changes in the number of teeth.

Published
2011

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