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

A. Aagaard; B. Styrishave; C. G Warman; M. H. Depledge

doi:10.3989/scimar.2000.64n4381

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

Authors

A. Aagaard Danish Environmental Protection Agency
B. Styrishave Dep. of Life Sciences and Chemistry, Roskilde University
C. G Warman Ecotoxicology and Marine Biology Research Group, Plumouth Environmental Research Centre, University of Plymouth
M. H. Depledge Ecotoxicology and Marine Biology Research Group, Plumouth Environmental Research Centre, University of Plymouth

DOI:

https://doi.org/10.3989/scimar.2000.64n4381

Keywords:

cardiac activity, mercury, pebble crab, Gaetice depressus, endogenous rhythms

Abstract

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

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Published

2000-12-30

How to Cite

Aagaard A, Styrishave B, Warman CG, Depledge MH. The use of cardiac monitoring in the assessment of mercury toxicity in the subtropical pebble crab Gaetice depressus (Brachyura: Grapsidae: Varuninae). Sci. mar. [Internet]. 2000Dec.30 [cited 2025May4];64(4):381-6. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/779

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Issue

Vol. 64 No. 4 (2000)

Section

Articles

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