TY - JOUR
T1 - The effect of salinity on growth rate, survival and swimbladder inflation in gilthead seabream, Sparus aurata, larvae
AU - Tandler, Amos
AU - Anav, Fabio A.
AU - Choshniak, Itzhak
N1 - Funding Information:
The authors wish to thank the staff of the National Center for Mariculture staff their support during the entire study. Special thanks go to S. Kolkovski, S. Hassin, Y. Gothilf, Y. Shezifi and N. Weisbrot. Thanks go to the staff at the Departmento f Life Science, Tel Aviv University. Financial support was provided by the S.H. and Helen Scheuer Family Foundation, The Jewish Agency through their Arava Researcha nd Developmentp rogram and the Eilat Foundation.
PY - 1995/10/15
Y1 - 1995/10/15
N2 - The effects of salinity (15-40 p.p.t. salinity; 450-1200 mOsm kg-1) on growth, survival and swim bladder (SB) inflation in gilthead seabream, Sparus aurata, were evaluated. Over the salinity range tested, 1-32 day old seabream larvae were found to be osmotic regulators. Within the range tested, 1 day old larvae maintained an osmotic pressure of 224 mOsm kg-1, significantly lower than 410 mOsm kg-1 in 13 and 24 day old larvae. In addition, water content in larvae was negatively correlated with age, being over 86% in 4 day old larvae and 83% in 32 day old larvae. A negative relationship was found between salinity and survival; as the rearing salinity decreased from 40 to 25 p.p.t., survival increased from 5.3 to 18.6%. Larval final dry weight (DW) and wet weight (WW) were over 16% higher at 25 than 40 p.p.t. salinity. Finally, reduced salinity induced a significant increase in the rate of SB inflation; 65 to 92.5% in 40 and 25 p.p.t. acclimated larvae, respectively.
AB - The effects of salinity (15-40 p.p.t. salinity; 450-1200 mOsm kg-1) on growth, survival and swim bladder (SB) inflation in gilthead seabream, Sparus aurata, were evaluated. Over the salinity range tested, 1-32 day old seabream larvae were found to be osmotic regulators. Within the range tested, 1 day old larvae maintained an osmotic pressure of 224 mOsm kg-1, significantly lower than 410 mOsm kg-1 in 13 and 24 day old larvae. In addition, water content in larvae was negatively correlated with age, being over 86% in 4 day old larvae and 83% in 32 day old larvae. A negative relationship was found between salinity and survival; as the rearing salinity decreased from 40 to 25 p.p.t., survival increased from 5.3 to 18.6%. Larval final dry weight (DW) and wet weight (WW) were over 16% higher at 25 than 40 p.p.t. salinity. Finally, reduced salinity induced a significant increase in the rate of SB inflation; 65 to 92.5% in 40 and 25 p.p.t. acclimated larvae, respectively.
KW - Salinity
KW - Sparus aurata
KW - Swim bladder
UR - http://www.scopus.com/inward/record.url?scp=0028995817&partnerID=8YFLogxK
U2 - 10.1016/0044-8486(95)01029-7
DO - 10.1016/0044-8486(95)01029-7
M3 - Article
AN - SCOPUS:0028995817
SN - 0044-8486
VL - 135
SP - 343
EP - 353
JO - Aquaculture
JF - Aquaculture
IS - 4
ER -