Effects of hyperthyroidism on the Labeobarbus (= Barbus) intermedius (Cyprinidae) early larval melanophores development

Resumo

The experimental investigation of the effects of hyperthyroidism on the development of Labeobarbus intermedius pigmentation revealed that high level of thyroid hormone leads to changes in developmental rate and timing of early larval pigment pattern. The hyperthyroidism induces the acceleration of growth of early larval melanophores, causes changes in their physiological state, and provokes the premature onset of the adult pigment pattern formation.