Effects of feeding the mummichog, (Fundulus heteroclitus), a prepared diet spiked with PCBs
- Environmental Protection Agency, Narragansett, RI (United States). Environmental Research Lab.
The effects of non-ortho and mono-orthosubstituted polychlorobiphenyls (PCBS) on growth, mortality and reproduction in mummichogs were investigated. In a laboratory study, a mixture of 8 congeners (77, 126, 118, 105, 167, 156, 157 and 189) was spiked into the diet with concentration ratios similar to those found in fish collected from New Bedford Harbor, MA. The diet, prepared in-house at PCB concentrations of 54.29 mg PCB/Kg diet (high), 10.86 mg PCB/Kg diet (medium), 2.17 mg PCB/Kg diet (low), and a control, consisted primarily of fish meal, herring oil (the PCB carrier), and molasses. Mummichogs were held under controlled conditions (12 hr light:12hr dark cycle, flow-through 20 C filtered sea water) for 56 days and were fed a ration of 1.25% of total fish biomass per replicate aquarium twice a day. Food consumption, mortality, growth, and egg deposition were determined. Results indicated that the average daily amount of food consumed per dose was significantly less (p {le} 0.05) in the high and medium doses (0.628g/day {+-} 0.64 and 1.266 g/day {+-} 0.66, respectively) than the low dose and the control (1.88 g/day {+-} 0.50 and 1.96 g/day {+-} 0.60, respectively). Significant mortality (p {le} 0.05) was observed in both the high dose (96.18% {+-} 4.42) and medium dose (15.40% {+-} 6.26), but not in the low dose (0.0%) or control (1.93% {+-} 3.85). Growth of mummichogs fed the high dose was not determined because of the high mortality observed. Growth in mummichogs fed the medium dose (0.785g {+-} 0.612, 0.395 cm {+-} 0.15) was significantly less (p {le} 0.05) than the low dose (3.42 g {+-} 1.02, 0.9 cm {+-} 0.12) and the control (4.01 g {+-} 1.10, 1.06 cm {+-} 0.17). No statistically significant differences (p {le} 10.05) in total egg production were observed. In conclusion, mummichogs exhibited a clear dose of response in growth, mortality and food consumption with increasing PCB concentration.
- OSTI ID:
- 398208
- Report Number(s):
- CONF-9511137-; ISBN 1-880611-03-1; TRN: IM9649%%416
- Resource Relation:
- Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
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