FOOD-CHAIN STRUCTURE IN ONTARIO LAKES DETERMINES PCB LEVELS IN LAKE TROUT (SALVELINUS-NAMAYCUSH) AND OTHER PELAGIC FISH

被引:250
作者
RASMUSSEN, JB [1 ]
ROWAN, DJ [1 ]
LEAN, DRS [1 ]
CAREY, JH [1 ]
机构
[1] ENVIRONM CANADA, CANADA CTR INLAND WATERS, NATL WATER RES INST, BURLINGTON L7R 4A6, ONTARIO, CANADA
关键词
D O I
10.1139/f90-227
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The trophic structure of pelagic communities in lakes of glaciated regions is highly variable due to restricted dispersal of glacial relict taxa and recent species introductions. Much of the enormous between-lake variability in PCB levels in lake trout flesh (15-10 000ng/g) from the St. Lawrence system results from differences in the length of pelagic food chains. Data (1978-81) on PCB concentrations in lake trout flesh indicate that PCB concentrations increased with the length of the food chain and tissue lipid content, and decreased with distance north of urban-industrial centres. Each trophic level contributed about a 3.5-fold biomagnification factor to the PCB concentrations in the trout, and the lipid content of predicting PCB levels in pelagic salmonids and forage fish (smelt and coregonids) indicated that biomagnification of small atmospheric inputs of persistent lipophilic contaminants can explain the frequent occurrence of high levels of contaminants in some biota from remote areas, and that species introductions that lengthen food chains will lead to significant increases in levels of atmospherically dispersed persistent organic contaminants in top predators. -Authors
引用
收藏
页码:2030 / 2038
页数:9
相关论文
共 71 条
  • [1] ATLAS E, 1986, PCBS ENV, V1, P79
  • [2] BIDLEMAN TF, 1989, ARCTIC, V42, P307
  • [3] Boissonneau A.N., 1968, CAN J EARTH SCI, V5, P97, DOI [DOI 10.1139/E68-011, 10.1139/e68-011]
  • [4] Boissonneau AN., 1966, CAN J EARTH SCI, V3, P559, DOI DOI 10.1139/E66-040
  • [5] ACCUMULATION AND ELIMINATION KINETICS OF DICHLOROBIPHENYLS, TRICHLOROBIPHENYLS AND TETRACHLOROBIPHENYLS BY GOLDFISH AFTER DIETARY AND AQUEOUS EXPOSURE
    BRUGGEMAN, WA
    MARTRON, LBJM
    KOOIMAN, D
    HUTZINGER, O
    [J]. CHEMOSPHERE, 1981, 10 (08) : 811 - 832
  • [6] ABUNDANCE AND LIFE-HISTORY OF MYSIS-RELICTA IN ST-LAWRENCE GREAT LAKES
    CARPENTER, GF
    MANSEY, EL
    WATSON, NHF
    [J]. JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1974, 31 (03): : 319 - 325
  • [7] POLYCHLORINATED BIPHENYLS IN COASTAL MARINE ZOOPLANKTON - BIOACCUMULATION BY EQUILIBRIUM PARTITIONING
    CLAYTON, JR
    PAVLOU, SP
    BREITNER, NF
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1977, 11 (07) : 676 - 682
  • [8] FISH SEDIMENT CONCENTRATION RATIOS FOR ORGANIC-COMPOUNDS
    CONNOR, MS
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1984, 18 (01) : 31 - 35
  • [9] CRAWFORD G, 1978, 7801 ONT MIN ENV REP
  • [10] Dadswell MJ., 1974, DISTRIBUTION ECOLOGY