298
C. SHELTON
0
5
4
3
2
+ I
0
t
Fig. 2. Carp. Pressure
changes in the huccal and
- 2
€ 3
o p e r c u 1 a r cavities, together
with differential p r e s s u r e
O 4
6
cnrves. The records were taken
! !
3 5
from ( a ) quietly breathing fish
g 4
and ( b ) fish stimulated to
n 3
breathe heavily by increasing
2
the carbon dioxide content of
t l
the water. From S a u n d e r s
0
( 1961 ). Reproduced by permission of the National Re0
0.5
1.0
1.5
2.0
search Council of Canada from
the Con. J . Zool. 39, 637-653
c
p -I
0
.Time (sec)
( b )
(1961).
done on the mechanics of ventilation in pelagic fish which are moving,
although clearly this is of the greatest significance. Devices in which
water currents can be maintained, such as the Brett (1964) respironieter
or the Bainbridge (1963) fish wheel, make this type of investigation
C. SHELTON
0
5
4
3
2
+ I
0
t
Fig. 2. Carp. Pressure
changes in the huccal and
- 2
€ 3
o p e r c u 1 a r cavities, together
with differential p r e s s u r e
O 4
6
cnrves. The records were taken
! !
3 5
from ( a ) quietly breathing fish
g 4
and ( b ) fish stimulated to
n 3
breathe heavily by increasing
2
the carbon dioxide content of
t l
the water. From S a u n d e r s
0
( 1961 ). Reproduced by permission of the National Re0
0.5
1.0
1.5
2.0
search Council of Canada from
the Con. J . Zool. 39, 637-653
c
p -I
0
.Time (sec)
( b )
(1961).
done on the mechanics of ventilation in pelagic fish which are moving,
although clearly this is of the greatest significance. Devices in which
water currents can be maintained, such as the Brett (1964) respironieter
or the Bainbridge (1963) fish wheel, make this type of investigation