Title of article :
Identification of specific malformations of sea urchin larvae for toxicity assessment: Application to marine pisciculture effluents
Author/Authors :
Carballeira، نويسنده , , C. and Ramos-Gَmez، نويسنده , , J. and Martيn-Dيaz، نويسنده , , L. and DelValls، نويسنده , , T.A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
11
From page :
12
To page :
22
Abstract :
Standard toxicity screening tests are useful tools in the management of impacted coastal ecosystems. To our knowledge, this is the first time that the sea urchin embryo development test has been used to evaluate the potential impact of effluents from land-based aquaculture farms in coastal areas. The toxicity of effluents from 8 land-based turbot farms was determined by calculating the percentage of abnormal larvae, according to two criteria: (a) standard, considering as normal pyramid-shaped larvae with differentiated components, and (b) skeletal, a new criterion that considers detailed skeletal characteristics. The skeletal criterion appeared to be more sensitive and enabled calculation of effective concentrations EC5, EC10, EC20 and EC50, unlike the classical criterion. Inclusion of the skeleton criterion in the sea urchin embryo development test may be useful for categorizing the relatively low toxicity of discharges from land-based marine fish farms. Further studies are encouraged to establish any causative relationships between pollutants and specific larval deformities.
Keywords :
Skeletal rods , Abnormal larva , Teratogenic effects , Aquaculture discharges , Paracentrotus lividus , Toxicity endpoint
Journal title :
Marine Environmental Research
Serial Year :
2012
Journal title :
Marine Environmental Research
Record number :
2255842
Link To Document :
بازگشت