Journal of National Fisheries University

PISSN : 0370-9361

Back to Top

Journal of National Fisheries University Volume 60 Issue 1
published_at 2011-10

Effect of Water Temperature on Ventilation in the Pacific Oyster Crassostrea gigas

マガキの鰓換水に及ぼす水温の影響
fulltext
290 KB
60-1-63-66.pdf
Descriptions
The effect of water temperature on the ventilation in the Pacific oyster Crassostrea gigas was examined by the direct measurement method of ventilation volume. The water temperature was elevated 3℃ every hour. The ventilation volume increased from 1.32 l/min/kg at 20℃ to 2.35 l/min/kg at 26℃ with the rise in the water temperature, and then decreased to 0 l/min/kg at 37℃. The moving speed of vinyl film put on the gill surface (activity of ciliary movement) increased from 31.3 mm/min at 20℃ to 56.3 mm/min at 35℃ , and then decreased to 0 mm/min at 41℃. These results reveal that the Pacific oyster would increase the preying quantity by the increase of the ventilation volume with the rise in the water temperature.
Creator Keywords
Pacific oyster
Ciliary movement
Ventilation volume
Water temperature