Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro,...
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![Page 1: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/1.jpg)
Growth performance of mussel recruits on raft culture after Prestige oil spill
Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández ReirizInstituto de Investigaciones Marinas CSIC, 36208 Vigo Spain
Phone: +34986 231930 Fax: +34986 292762 Email: [email protected]
![Page 2: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/2.jpg)
![Page 3: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/3.jpg)
From ENVISAT ASAR satellite on November 17 th, 2002
-PAH in mussel tissues -Physiological / Biochemical measurements (survival in air, biochemical composition)
Mussel characterization at seeding (February 2003) Labarta et al., MEPS 2005
Most affected area
![Page 4: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/4.jpg)
Original locations ofmussel populations translated for experimental culture
Redes Miranda Pindo Bueu
Length (mm)
Total DW (g)
Length (mm)
Total DW (g)
Length (mm)
Total DW (g)
Length (mm)
Total DW (g)
Seeding 21,4±7.9 0,3±0.0 10,4±3.6 0,1±0.0 15,6±6.8 0,2±0.0 18,0±5.2 0,2±0.0
Thinning-out 50.6±10.1 4.1±0.3 46.8±6.2 3.2±0.0 44.7±7.5 2.5±0.0 52.2±7.2 4.8±0.4
Labarta et al., MEPS 2005
Corporal parameters at seeding and thinning-out
![Page 5: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/5.jpg)
0 2 4 6 8 10 12
time (months)
0
10
20
30
40
50
60
70
80L
(mm
)
0 2 4 6 8 10 12
time (months)
0
2
4
6
8
10
12
tota
l DW
(g)
Growth curves in length and total dry weight fitted
to Gompertz model
Pt =P∞(e-e(-k*(t-t´)))
BueuRedesMirandaPindo
![Page 6: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/6.jpg)
<2,4
**
0
2
4
6
8
10
Redes 1 Miranda 2 Pindo 3 Bueu 4
mm
/mon
th<2
<1,2,4
**
0
0,05
0,1
0,15
0,2
Redes 1 Miranda 2 Pindo 3 Bueu 4
g tis
sue
DW
/mon
th >1,2
>2
*
*
00,20,40,60,8
11,2
Redes 1 Miranda 2 Pindo 3 Bueu 4
g to
tal D
W/m
onth
<1,4
Seeding/Thinning-out
0
2
4
6
8
10
Redes 1 Miranda 2 Pindo 3 Bueu 4
mm
/mon
th
>3
* *
0
0,05
0,1
0,15
0,2
Redes 1 Miranda 2 Pindo 3 Bueu 4
g tis
sue
DW
/mon
th
>3,4
>1,3,4
* *
00,20,40,60,8
11,2
Redes 1 Miranda 2 Pindo 3 Bueu 4g
tota
l DW
/mon
th >3,4
Thinning-out/Harvest
Initial length/weight at seeding and thinning-out had no effect on growth rate (GR) (ANCOVA p>0.05)
Pindo showed the lowest weight GR in both phases of the culture (p<0.05)
Growth Rates
![Page 7: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/7.jpg)
Seeding/Thinning-out Thinning-out/Harvest
0 2 4 6 8 10 12
time (months)
0
2
4
6
8
10
12
tota
l DW
(g)
DWt =DW∞(e-e(-k*(t-t´)))
<1,4
*
0
2
4
6
8
10
12
Redes 1 Miranda 2 Pindo 3 Bueu 4
DW∞
-0,9
-0,7
-0,5
-0,3
-0,1
0,1
Redes 1 Miranda 2 P indo 3 Bueu 4
<1,2
*
0,0
1,0
2,0
3,0
4,0
5,0
6,0
7,0
Redes 1 Miranda 2 P indo 3 Bueu 4
>2
*
*
00,20,40,60,8
11,2
Redes 1 Miranda 2 Pindo 3 Bueu 4
g to
tal D
W/m
onth
<1,4
>1,3,4
* *
00,20,40,60,8
11,2
Redes 1 Miranda 2 Pindo 3 Bueu 4
g to
tal D
W/m
onth >3,4
Pindo DW∞
(p<0.05) Bueu t´(p<0.05)
BueuRedesMirandaPindo
Growth rates in total dry weight
![Page 8: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/8.jpg)
0
5
10
15
20
25
30
35C
I
0
1
2
3
4
5
6
7
8
9
Ch
l-a
BueuRedesMirandaPindoChl a
CI is a weak parameter to determine stress situations:
- Nutritional state- Reproductive cycle- Pollution
Condition Index evolution along the culture
![Page 9: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/9.jpg)
0
10
20
30
40
50
60
70
80
<50 mm 50 mm≤N<70 mm N≥70mm
Bueu
Redes
Miranda
Pindo
% indiv≥70mm lowest for Pindo mussels (p<0.05)
Yield at harvest
![Page 10: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/10.jpg)
Comparison among mussel populations showed the following remarks:
% individuals ≥ 70 mm, lowest values for Pindo mussels
Lowest Total DW values at harvest for Pindo mussels
A poor commercial classification in pieces/kg
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![Page 11: Growth performance of mussel recruits on raft culture after Prestige oil spill Laura G. Peteiro, José MF Babarro, Uxío Labarta & María José Fernández Reiriz.](https://reader033.fdocuments.us/reader033/viewer/2022051116/56649d2a5503460f949ff7d4/html5/thumbnails/11.jpg)
- Population from Pindo showed the lowest growth rate values in weight in both phases of the culture.
Preliminary Remarks:
- The maintenance of lower growth rates along the culture resulted in poorer commercial yield at harvest for Pindo mussels.
- The latter growth performance of Pindo mussels would be a sub-lethal effect that might reflect its worse physiological and biochemicalconditioning (lipid classes, fatty acids)monitored at the onset of the culture by Labarta et al., (MEPS 2005).