当前位置： SCI文献检索 > ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY期刊下所有文献 > Sublethal copper toxicity and food response in the freshwater crayfish Cambarus bartonii (Cambaridae, Decapoda, Crustacea).

Sublethal copper toxicity and food response in the freshwater crayfish Cambarus bartonii (Cambaridae, Decapoda, Crustacea).

Abstract：

:Food response preceding and following exposure to Cu concentrations of 0.00, 0.02, and 0.2 mg/L was observed in male and female Cambarus bartonii from an uncontaminated, freshwater lake. The animals were tested in a Y-maze. Control animals demonstrated food localization, and the treated animals, either no localization or slight food avoidance. The latency for localization in the Cu-exposed males increased. Females revealed slight increases in latency. There were no significant differences between the low and the high Cu concentration groups in food detection or latency. However, there was an increase in mortality in the higher concentration group and significant difference in mortality among three copper concentrations (P<0.02). Females seem to recover from Cu-induced impairment slightly faster than males, suggesting a more efficient mechanism for detoxifying copper. Female mortality, however, remained equally high in the high Cu concentration group. The toxic effects of copper persist after removal of the toxicant and occur at concentrations much lower than reported lethal levels.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Sherba M,Dunham DW,Harvey HH

doi

10.1006/eesa.1999.1910

keywords:

subject

Has Abstract

pub_date

2000-07-01 00:00:00

pages

329-33

issue

3

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(99)91910-3

journal_volume

46

pub_type

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