TABLE VII. DAILY RATES OF BIOLJEPOSITION IN Crassostrea AND N y t i l w i
(23-24 August 1969)
Total amounts Total aniounfs
of biodeposits of biodeposits
Interval of time
produced
produced iv
15.00- 18.00- 21.00- 00.00- 03.00- 06.00- 09.00- 12.00at night
dry wt/12 h
dry wt/l2 h
per animal
per animal
the daytime
18.00 21.00 00.00 03.00 06.00 09.00 12.00 15.00 (18.00-06.00), (06.00-18.00).
Grassostrea
Faeces (mg)"
2-1
6-8
6.0
5-2
5.3
3.7
5.9
3.6
23.3
15.3
g i g a
Pseudofaeces(mg) 11.3 10.6 13.1 21.0 27.1 23.0 17.4 17.6
71.8
69.3
Total (mg)
13.4 17.4 19.1 26.2 32.4 26.7 23.3 21.2
95.1
84.6
Mylilus
Faeces (mg)"
3.3 12.3 10.4
8.8
11.1
6.9
5.8
6.9
42.6
22.9
galloprovincialis Pseudofaeces (mg) 12.7 21.4 24.8 25.4 19.3 16.7 15.4 13.0
90.9
57.8
Total (mg)
16.0 33.7 35.2 34.2 30.4 23.6 21.2 19.9
133.5
80.7
a Faeces and pseudofaeces in dry weight (mg)/3 h per animal.
3 s
M
m
P
1.3
to