47
Figure 30. Interaction between the presents of Asterias and Marthasterias in BAP and BAP-BSP
The presence of Asterias and Marthasterias have an impact with BAP and BAP- BSP. It means that if there were both starfishes in the cage at the same time and
same station, they consumed approximately 11 oysters in BAP and 10 oysters in BAP-BSP.
Remarks on the distinction of BAP and BAP-BSP. According to this results the number of dead oysters in BSP seems to be affected or controlled by the predation
not only by other kinds of mortalities.
4.4 Economic value on RISCO Project
Table 14 and 15 show the economic value on BAP adult oysters which used in RISCO project.
48
Table 14. Oyster presence on BAP
Remark table 14 and 15: 1. Each station contain oyster 20gr
2. Price of adult oysters : 6,9 €Kg 3. Letters in red means there has been the addition of oysters on Risco
Project.
Table 15. Economic value on BAP
Station 1
2 3
4 5
6 7
8 9
10 11
12 13
14 15
M o
n th
150 150 150 150 150 150 150 150 150 150 150 150 150 150 150
2250 1
146 2
150 148 2
127 150 142 144 78
128 136 112 100 126
1691 2
145 100
148 147 100
102 147 129 141 65
111 98
100 98
91 1722
3 139
102 148 136
98 99
146 104 139 100 100
78 100 100 100
1689 4
131 97
90 131
100 95
145 72
133 100 100
73 88
84 100
1539 5
130 48
50 131
50 93
143 50
133 100
80 66
50 75
48 1247
6
101 49
50 137
45 78
121 50
115 50
70 58
50 66
29 1069
7
61 43
50 128
50 58
114 44
80 50
50 47
50 56
41 922
8 47
93 55
109 39
72 38
35 30
21 43
15 597
Loss specimens 103 589 300 57
593 95
41 255
78 512 395 416 479 207 424
Oyster production
specimens
1 2
3 4
5 6
7 8
9 1 0
1 1 1 2
1 3 1 4
1 5 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
2 0 . 7 0 2 0 . 7 0
3 1 0 . 5 0 1
2 0 . 1 5 0 . 2 8
2 0 . 7 0 2 0 . 4 2
0 . 2 8 1 7 . 5 3
2 0 . 7 0 1 9 . 6 0
1 9 . 8 7 1 0 . 7 6
1 7 . 6 6 1 8 . 7 7
1 5 . 4 6 1 3 . 8 0
1 7 . 3 9 2 3 3 . 3 6
2 2 0 . 0 1
1 3 . 8 0 2 0 . 4 2
2 0 . 2 9 1 3 . 8 0
1 4 . 0 8 2 0 . 2 9
1 7 . 8 0 1 9 . 4 6
8 . 9 7 1 5 . 3 2
1 3 . 5 2 1 3 . 8 0
1 3 . 5 2 1 2 . 5 6
2 3 7 . 6 4 3
1 9 . 1 8 1 4 . 0 8
2 0 . 4 2 1 8 . 7 7
1 3 . 5 2 1 3 . 6 6
2 0 . 1 5 1 4 . 3 5
1 9 . 1 8 1 3 . 8 0
1 3 . 8 0 1 0 . 7 6
1 3 . 8 0 1 3 . 8 0
1 3 . 8 0 2 3 3 . 0 8
4
1 8 . 0 8 1 3 . 3 9
1 2 . 4 2 1 8 . 0 8
1 3 . 8 0 1 3 . 1 1
2 0 . 0 1 9 . 9 4
1 8 . 3 5 1 3 . 8 0
1 3 . 8 0 1 0 . 0 7
1 2 . 1 4 1 1 . 5 9
1 3 . 8 0 2 1 2 . 3 8
5 1 7 . 9 4
6 . 6 2 6 . 9 0
1 8 . 0 8 6 . 9 0
1 2 . 8 3 1 9 . 7 3
6 . 9 0 1 8 . 3 5
1 3 . 8 0 1 1 . 0 4
9 . 1 1 6 . 9 0
1 0 . 3 5 6 . 6 2
1 7 2 . 0 9 6
1 3 . 9 4 6 . 7 6
6 . 9 0 1 8 . 9 1
6 . 2 1 1 0 . 7 6
1 6 . 7 0 6 . 9 0
1 5 . 8 7 6 . 9 0
9 . 6 6 8 . 0 0
6 . 9 0 9 . 1 1
4 . 0 0 1 4 7 . 5 2
7 8 . 4 2
5 . 9 3 6 . 9 0
1 7 . 6 6 6 . 9 0
8 . 0 0 1 5 . 7 3
6 . 0 7 1 1 . 0 4
6 . 9 0 6 . 9 0
6 . 4 9 6 . 9 0
7 . 7 3 5 . 6 6
1 2 7 . 2 4 8
6 . 4 9 0 . 0 0
0 . 0 0 1 2 . 8 3
0 . 0 0 7 . 5 9
1 5 . 0 4 5 . 3 8
9 . 9 4 5 . 2 4
4 . 8 3 4 . 1 4
2 . 9 0 5 . 9 3
2 . 0 7 8 2 . 3 9
1 4 . 2 1 8 1 . 2 8
4 1 . 4 0 7 . 8 7
8 1 . 8 3 1 3 . 1 1
5 . 6 6 3 5 . 1 9
1 0 . 7 6 7 0 . 6 6
5 4 . 5 1 5 7 . 4 1
6 6 . 1 0 2 8 . 5 7
5 8 . 5 1
S t a t i o n O y s t e r
p r o d u c t i o n €
M o
n t
h
L o s s €
49
Table 14 and 15 showed the economic value on oyster culture applied on Risco project, specially BAP. In table 15, station 2 and 5 showed the highest economic
loss, approximately €81.28 - €81.83. On the contrary, station 7 showed the lowest loss, €5.66 or 41 oysters. Economic value for BSP as showed in table 16 and 17.
Table 16. Oyster presence on BSP
Remark table 16 and 17: 1. Each station contain oyster 20gr
2. Price of adult oysters : 6,9 €Kg 3. Letters in red means there has been the addition of oysters on Risco
Project. Table 17. Economic value on BSP
1 2
3 4
5 6
7 8
9 1 0
1 1 1 2
1 3 1 4
1 5 3 0 0
3 0 0 3 0 0
3 0 0 3 0 0
3 0 0 3 0 0
3 0 0 3 0 0
3 0 0 3 0 0
3 0 0 3 0 0
3 0 0 3 0 0
4 5 0 0 1
2 9 4 2 2 7
2 7 9 2 8 3
2 6 2 2 8 7
2 9 7 2 7 4
2 7 3 2 7 3
2 9 5 2 1 9
2 7 5 2 7 2
2 3 5 4 0 4 5
2
2 7 0 1 9 7
2 5 3 2 5 5
2 0 5 2 6 6
2 7 6 2 5 0
2 4 8 2 4 8
2 7 0 1 8 7
2 4 3 2 4 8
1 9 6 3 6 1 2
3
2 4 9 1 5 3
2 3 1 2 3 4
1 7 2 2 3 8
2 5 5 2 2 9
2 2 6 2 2 6
2 4 3 1 5 9
2 1 2 2 2 6
1 6 0 3 2 1 3
4
2 1 8 1 2 2
1 9 8 2 0 3
1 3 9 2 0 7
2 2 1 1 9 1
1 8 9 1 9 1
1 8 9 1 2 7
1 7 4 1 9 4
1 2 3 2 6 8 6
5
1 8 8 8 2
1 6 3 1 7 2
1 0 7 1 7 7
1 9 1 1 5 9
1 5 7 1 5 7
1 5 6 9 6
1 4 3 1 5 4
8 1 2 1 8 3
6
1 4 3 3 3
1 2 5 1 3 4
7 1 1 4 3
1 3 8 1 2 9
1 2 3 1 2 7
1 0 8 6 2
1 0 9 1 2 5
9 8 1 6 6 8
7 1 1 2
6 5 7 4
1 0 8 3 8
1 1 1 1 0 4
9 3 9 4
9 2 7 3
3 2 7 3
8 8 3 5
1 1 9 2 8
8 5 5 8
3 9 7 7
8 7 9
7 3 6 1
6 2 6 1
4 4 4 2
5 6 7 4 5
2 1 5 3 0 7
2 6 1 2 2 3
2 9 2 2 2 1
2 2 7 2 3 9
2 3 8 2 3 9
2 5 6 2 6 8
2 5 8 2 4 4
3 6 3 M
o n
t h
O y s t e r p r o d u c t i o n
s p e c i m e n s S t a t i o n
L o s s s p e c i m e n s
1 2
3 4
5 6
7 8
9 1 0
1 1 1 2
1 3 1 4
1 5 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0 4 1 . 4 0
6 2 1 . 0 0 1
4 0 . 5 7 3 1 . 3 3 3 8 . 5 0 3 9 . 0 5 3 6 . 1 6 3 9 . 6 1 4 0 . 9 9 3 7 . 8 1 3 7 . 6 7 3 7 . 6 7 4 0 . 7 1 3 0 . 2 2 3 7 . 9 5 3 7 . 5 4 3 2 . 4 3 5 5 8 . 2 1
2 3 7 . 2 6 2 7 . 1 9 3 4 . 9 1 3 5 . 1 9 2 8 . 2 9 3 6 . 7 1 3 8 . 0 9 3 4 . 5 0 3 4 . 2 2 3 4 . 2 2 3 7 . 2 6 2 5 . 8 1 3 3 . 5 3 3 4 . 2 2 2 7 . 0 5
4 9 8 . 4 6 3
3 4 . 3 6 2 1 . 1 1 3 1 . 8 8 3 2 . 2 9 2 3 . 7 4 3 2 . 8 4 3 5 . 1 9 3 1 . 6 0 3 1 . 1 9 3 1 . 1 9 3 3 . 5 3 2 1 . 9 4 2 9 . 2 6 3 1 . 1 9 2 2 . 0 8 4 4 3 . 3 9
4 3 0 . 0 8 1 6 . 8 4 2 7 . 3 2 2 8 . 0 1 1 9 . 1 8 2 8 . 5 7 3 0 . 5 0 2 6 . 3 6 2 6 . 0 8 2 6 . 3 6 2 6 . 0 8 1 7 . 5 3 2 4 . 0 1 2 6 . 7 7 1 6 . 9 7
3 7 0 . 6 7 5
2 5 . 9 4 1 1 . 3 2 2 2 . 4 9 2 3 . 7 4 1 4 . 7 7 2 4 . 4 3 2 6 . 3 6 2 1 . 9 4 2 1 . 6 7 2 1 . 6 7 2 1 . 5 3 1 3 . 2 5 1 9 . 7 3 2 1 . 2 5 1 1 . 1 8 3 0 1 . 2 5
6 1 9 . 7 3
4 . 5 5 1 7 . 2 5 1 8 . 4 9
9 . 8 0 1 9 . 7 3 1 9 . 0 4 1 7 . 8 0 1 6 . 9 7 1 7 . 5 3 1 4 . 9 0
8 . 5 6 1 5 . 0 4 1 7 . 2 5
1 3 . 5 2 2 3 0 . 1 8
7 1 5 . 4 6
8 . 9 7 1 0 . 2 1 1 4 . 9 0
5 . 2 4 1 5 . 3 2 1 4 . 3 5 1 2 . 8 3 1 2 . 9 7 1 2 . 7 0 1 0 . 0 7
4 . 4 2 1 0 . 0 7 1 2 . 1 4
4 . 8 3 1 6 4 . 5 0
8
1 1 . 7 3 8 . 0 0
5 . 3 8 1 0 . 6 3
1 . 1 0 1 0 . 9 0 1 0 . 0 7
8 . 4 2 8 . 5 6
8 . 4 2 6 . 0 7
0 . 0 0 5 . 8 0
7 . 7 3 0 . 0 0
1 0 2 . 8 1 2 9 . 6 7 4 2 . 3 7 3 6 . 0 2 3 0 . 7 7 4 0 . 3 0 3 0 . 5 0 3 1 . 3 3 3 2 . 9 8 3 2 . 8 4 3 2 . 9 8 3 5 . 3 3 3 6 . 9 8 3 5 . 6 0 3 3 . 6 7 5 4 . 9 2
S t a t i o n O y s t e r
p r o d u c t i o n €
M o
n t
h
L o s s €
50
Both table 16 and 17 showed the economic value on oyster culture applied on Risco project, BSP. In table 17, station 15 showed the highest economic loss,
approximately €54.92 or 363 oysters. For the rest, the economic value was varies between €29.67 - €40.30.
5 Discussion
5.1 Biological Aspect on Risco Project
