EFFECTS OF ZINC ON JUVENILE ATLANTIC SALMON SALMO-SALAR - ACUTE TOXICITY, FOOD-INTAKE, GROWTH AND BIOACCUMULATION

被引:38
作者
FARMER, GJ [1 ]
ASHFIELD, D [1 ]
SAMANT, HS [1 ]
机构
[1] ENVIRONM PROTECT SERV ATLANTIC REG, DIV LAB SERV, HALIFAX B3J 1M5, NS, CANADA
关键词
D O I
10.1016/0013-9327(79)90142-3
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The effects of long-term zinc exposure on juvenile salmon were assessed by measuring changes in their voluntary food intake, growth and rate of zinc accumulation. The food intake of salmon surviving concentrations as great as the 21-day LC50 was initially reduced but returned to amounts observed for control fish within 10 to 20 days. After 45 days' exposure, the food intake of these individuals was greater than that of the controls. Growth rates of salmon exposed to zinc (maximum concentration estimated to cause mortality ≤50% during an acute bioassay) and offered rations of 2.0 or 3.5% dry body weight per day were not reduced during a three-month period. However, caloric content of salmon at the higher concentrations showed a small decrease during the experimental period. Zinc concentration of salmon feeding to satiation once daily and exposed to zinc increased during the first two months of exposure before reaching a maximum, while zinc concentration of salmon offered sub-excess rations (2.0 and 3.5% per day) increased linearly during a three-month period. © 1979.
引用
收藏
页码:103 / 117
页数:15
相关论文
共 33 条
  • [1] EFFECT OF ZINC GROWTH OF MINNOW PHOXINUS-PHOXINUS PHOXINUS-PHOXINUS
    BENGTSSON, BE
    [J]. OIKOS, 1974, 25 (03) : 370 - 373
  • [2] GROWTH RATE AND BODY COMPOSITION OF FINGERLING SOCKEYE SALMON, ONCORHYNCHUS NERKA, IN RELATION TO TEMPERATURE AND RATION SIZE
    BRETT, JR
    SHELBOURN, JE
    SHOOP, CT
    [J]. JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1969, 26 (09): : 2363 - +
  • [3] BRUNGS WA, 1969, T AM FISH SOC, V98, P272, DOI 10.1577/1548-8659(1969)98[272:CTOZTT]2.0.CO
  • [4] 2
  • [5] ACUTE AND LONG-TERM ACCUMULATION OF COPPER BY BROWN BULLHEAD, ICTALURUS-NEBULOSUS
    BRUNGS, WA
    LEONARD, EN
    MCKIM, JM
    [J]. JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1973, 30 (04): : 583 - 586
  • [6] DRAPER NR, 1966, APPLIED REGRESSION A
  • [7] SOME SHORT-TERM INDICATORS OF SUBLETHAL EFFECTS OF COPPER ON BROOK TROUT, SALVELINUS-FONTINALIS
    DRUMMOND, RA
    SPOOR, WA
    OLSON, GF
    [J]. JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1973, 30 (05): : 698 - 701
  • [8] EDWARDS RW, 1966, J WAT POLLUT CONTROL, V66, P63
  • [9] Finney D.J, 1952, PROBIT ANAL
  • [10] STABILITE DES COMPLEXES GYDROXO ET PRODUITS DESOLUBILITE DES HYDROXYDES DE METAUX .I. ARGENT ET ZINC
    GUBELI, AO
    STEMARIE, J
    [J]. CANADIAN JOURNAL OF CHEMISTRY, 1967, 45 (08): : 827 - &