Preprint volume - SIBM

Pre-print Volume – Posters
AQUACULTURE COMMITEE
ATPase, 1:100. PCDDs, PCDFs, DL-PCBs and NDL-PCBs were measured in muscle
with high resolution gas chromatography coupled with high-resolution spectrometry.
GST and CAT activities were determined in liver (Ferreira et al. 2010).
Results – The sum of the six NDL-PCB indicators (∑6NDL-PCBs), was 6.28±1.67 and
2.64±2.48, ng/g whole weight (Ww) in Fsb and Wsb, respectively. The TEQ (2006) DL-
PCBs (pg/g -1 Ww) in Fsb and Wsb was 0.28±0.22 and 0.68±0.47, respectively. The
∑TEQ-PCDD/F (pg/g Ww) in Fsb and Wsb were 0.17±0.13. Mean CF (1.5±0.03) and HSI
(2.38±0.46) values were higher in Fsb than in Wsb (0.98±0.03; 0.97±0.05). All tissues
were well structured, even if weak increase of the connective stroma texture in the
testis, moderate increase of lipid vesicles in the hepatocytes and areas with reduction of
respiratory lamellae in the gills were described in Fsb. Catalase activity measured in
Fsb was 93 μmol/min/mg protein, higher than in Wsb. No significant differences were
described for GST among Fsb and Wsb (77.64 and 68.35nmol/min/mg protein,
respectively).
Conclusions – The PCB concentrations in Fsb were in the range of those detected in
other investigations in the Mediterranean Sea. TEQ (2006) DL-PCBs, values were
significantly lower than the maximum levels allowed by the European Commission
(EC, 2006) and lower than those measured in Carubelli et al. (2007), whereas the
∑6NDL-PCBs were comparable. ∑TEQ-PCDD/F were of the same order than that measured in
Çakıroğulları et al. (2010). CF and HSI were higher in Fsb than in Wsb as expected,
while no significant differences were described for morphological parameters in Fsb in
off-shore cages. GST activity in Fsb was not significantly different from that measured
in Wsb but significantly higher than in other farmed sea bass (Ferreira et al., 2010).
CAT activity in Fsb was higher than that measured in other farmed sea bass (Ferreira et
al., 2010), denoting an efficient antioxidant answer. All together, these data confirm
that currents and water deep are the key factors that increase the quality of the rearing
environment, facilitating water exchange inside the cages, reducing the organic matter
sedimentation under the farm and avoiding self-pollution.
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