Behavioural and hematological responses of Cyprinus carpio exposed to mercurial chloride.
J Environ Biol
;
2005 Jun; 26(2 Suppl): 393-7
Article
in English
| IMSEAR
| ID: sea-113169
ABSTRACT
The static bioassay experiments were conducted to study the hematological and behavioural responses of Cyprinus carpio after exposure to mercuric chloride. Three different concentrations i.e. 0.5, 1.0 and 1.5 ppm of mercuric chloride (HgCl2) were used for 8, 16, 24, 48, 72, 96 and 124 hrs for evaluating behavioural responses. Hematological responses were assessed after 60 days exposure to 0.1 ppm of HgCl2. The changes in body colour, movement, sluggishness or activeness, disbalance etc. constituted the observations on behavioural responses. Hematological parameters included total erythrocyte (TEC) and leukocyte (TLC) counts and hemoglobin (Hb) levels. Body colour had changed in all groups after 48 hours. The fish exposed to 0.5 ppm HgCl2 did not show any abnormal activity except colour change throughout the experiment. Though no sign of distress was observed initially in groups exposed to 1.0 and 1.5 ppm HgCl2 but abnormal posturing, disbalance and sluggishness became apparent after 72 hrs and all specimens of 1.5 ppm group had died within 124 hours. TEC and Hb levels decreased whereas TLC increased in both male and female specimens of C. carpio after exposure to 0.1 ppm HgCl2 for 60 days. These observations indicated that mercurial toxicity even at low levels, caused adverse effects on body colour, behavioural responses and hematological parameters like TEC, TLC and hemoglobin levels in C. carpio.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Time Factors
/
Blood Cell Count
/
Hemoglobins
/
Pigmentation
/
Carps
/
Dose-Response Relationship, Drug
/
Animals
/
Mercuric Chloride
/
Motor Activity
Language:
English
Journal:
J Environ Biol
Year:
2005
Type:
Article
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