Abstract
1. Wild triploid specimens of ginbuna, Carassius auratus langsdorfi, were compared with diploid specimens as regarding respiratory function and related activity such as haematological parameters, routine and active metabolisms, and swimming ability. 2. Polyploidisation led to an increase of erythrocyte size for triploid with decreasing erythrocyte number per unit volume blood, while total surface area remained almost unchanged. 3. Triploids exhibited a significantly higher electromyographical pulse frequency in dark muscle and gill cover than diploids. 4. There was no significant difference in metabolism and swimming ability between diploids and triploids.
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