| Type |
Article |
| Date |
1994-10 |
| Language |
English |
| Author(s) |
Beiras Ricardo1, His Edouard2 |
| Affiliation(s) |
1 : INST ESPANOL OCEANOG, APDO 130, E-15080 LA CORUNA, SPAIN.
2 : IFREMER, ARCACHON STN, F-33120 ARCACHON, FRANCE. |
| Source |
Marine Ecology Progress Series (0171-8630) (Inter-research), 1994-10 , Vol. 113 , N. 1-2 , P. 95-103 |
| DOI |
10.3354/meps113095 |
| WOS© Times Cited |
67 |
| Keyword(s) |
Mercury, Oyster, Larva , Embryo, Bioassay, Ecotoxicology |
| Abstract |
The effects of mercury (Hg) concentrations ranging from 0 (control) to 1024 µg 1-1 upon embryogenesis, survival, growth and metamorphosis of Crassostrea gigas (Thunberg) oyster larvae were investigated. Embryogenesis was abnormal in 50 % of the individuals at 11 µg 1-1 . The 48 h LD50 for D·shaped, umbonate and pediveliger larvae were 33, 115 and 200 µg 1-1 respectively. The increase in LD50 was partially explained by the larval weight increase, although weight-specific tolerance to Hg was higher in smaller larvae. Growth, the most sensitive physiological process studied, was significantly retarded at 4 µg 1-1. The metamorphosis rate was significantly reduced when competent pediveligers were exposed to 64 µg 1-1 for 48 h prior to the addition of the metamorphosis inducer epinephrine. The implications of the present results for monitoring pollution by utilising different bivalve larval stages are discussed. |
| Full Text |
| File |
Pages |
Size |
Access |
| 12191.pdf |
9 |
754 KB |
Open access |
|
