The use of cardiac monitoring in the assessment of mercury toxicity in the subtropical pebble crab Gaetice depressus (Brachyura: Grapsidae: Varuninae)

Scientia Marina

A. Aagaard¹  B. Styrishave²  C. G Warman³  M. H. Depledge³ 

[1] Danish Environmental Protection Agency;Dep. of Life Sciences and Chemistry, Roskilde University;Ecotoxicology and Marine Biology Research Group, Plumouth Environmental Research Centre, University of Plymouth;

关键词: cardiac activity;    mercury;    pebble crab;    gaetice depressus;    endogenous rhythms;   

DOI  :  10.3989/scimar.2000.64n4381

来源: DOAJ

【 摘 要 】

Heart rates were monitored in the pebble crab, Gaetice depressus using a non-invasive, computer aided cardiac monitoring system. A high degree of intra- and interindividual variability was observed, as was the presence of endogenous circatidal and circadian rhythms. Both acute and sublethal toxicities of mercury were determined. LC50´s (96) for mercury were between 0.16-0.20 mg l-1. Exposure to HgCl2 above LC50 (96) (0.3 mg Hg l-1) resulted in rapid and statictically significant increases in heart rate whereas exposure to a concentration lower than LC50 (96) (0.1 mg Hg l-1) resulted in progressive reduction in heart rate similar to that of control crabs

【 授权许可】

Unknown