Fluorometer Controlled Apparatus Designed for Long-Duration Algal-Feeding Experiments and Environmental Effect Studies with Mussels
Table 1
Mytilus edulis. Filtration rate () initially measured by the fluorometer controlled apparatus (FCA) on 4 groups of mussels under optimum conditions (about 2,300 cells mL−1), and estimated filtration rate () of the same mussels after h exposure to different constant algal (Rhodomonas salina) concentrations (, cells mL−1). The coefficients and , and coefficient of determination () were obtained from exponential curve-fits according to the equation for data shown in Figure 5 (#). Condition index (g dry weight of soft parts)/ (cm)3.
Group Shell length (L) Dry weight (W) Condition index (CI)
#
C (×103 cells mL−1)
(L h−1)
(L h−1)
(%)
I
2.4 ± 0.2
0.5 ± 0.2
L = 15.3 ± 0.4 mm W = 0.014 ± 0.002 g CI = 3.9 ± 0.7 g cm−3
A B
7.8 ± 0.4 10.9 ± 0.6
0.28 0.64
0.03 0.13
0.1 0.9
0.1 0.1
20 20
II
2.3 ± 0.2
2.6 ± 0.3
L = 30.4 ± 1.0 mm W = 0.219 ± 0.028 g CI = 6.2 ± 0.5 g cm−3
C
6.8 ± 0.5
2.48
0.08
0.9
0.6
23
D
7.9 ± 0.5
2.09
0.01
0.3
1.6
62
E
8.7 ± 0.6
2.11
0.05
0.9
0.7
27
F
9.6 ± 0.8
1.75
0.02
0.3
1.0
38
III
2.3 ± 0.3
2.9 ± 0.4
L = 31.8 ± 0.2 mm W = 0.279 ± 0.022 g CI = 7.7 ± 0.6 g cm−3
G
6.4 ±0.4
3.31
0.04
0.5
1.4
48
H
6.8 ± 0.3
1.73
0.05
0.6
0.6
21
I
12.3 ± 1.4
1.26
0.01
0.1
0.9
31
J
19.7 ± 2.9
3.15
0.13
0.6
0.3
10
K
36.1 ± 4.6
3.49
0.19
0.3
0.3
10
IV
2.2 ± 0.1
4.3 ± 0.4
L = 45.1 ± 0.1 mm W = 0.212 ± 0.022 g CI = 2.3 ± 0.2 g cm−3
