|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 3. Effects of ambient temperature and speed on bluefin tuna
O2 and tailbeat
frequency (TBF). (A)
O2 measurements
at swim speeds of 0.75–1.75 BL s–1 were
repeated at three steady-state temperatures on three consecutive days. A
significant interaction of temperature and speed effects on
O2 was observed
(ANOVA, P<0.05).
O2 increased
with swimming speed at 20 and 25°C (P<0.001), but was
unaffected by speed at 8°C (P=0.89). Data shown are means
± s.d. of
O2 measurements
from three individual bluefin tuna (mass=8.1±0.6 kg). (B) Tailbeats
were counted as bluefin swam at speeds of 0.75–1.75 BL
s–1 at temperatures of 8, 20 and 25°C. Both temperature
and speed had significant effects on TBF (P<0.001). Data shown are
means ± s.d. of TBF counts from three individual bluefin tuna
(mass=8.1±0.6 kg).
|
