Toxicity of formalin on behaviour and respiration in Danio rerio

<strong>Toxicity</strong> <strong>of</strong> <strong>formalin</strong> on behaviour and respiration in Danio rerio
may be due to damage caused to the gill epithelia by exposure to <strong>formalin</strong> (Smith and Piper,
1972).
Hence, judicious use <strong>of</strong> the chemotherapeutant with proper monitoring is essential to
understand its toxicity on fish and thereby help to achieve the aim <strong>of</strong> preventing the spread <strong>of</strong>
fish infections and infestations.
Table 1: Mortality <strong>of</strong> Zebra fish fingerlings at different concentration <strong>of</strong> <strong>formalin</strong>
S. NO FORMALIN CONCENTRATION %
1
(ppm)
CONTROL
MORTALITY
0
2 10 20
3 20 50
4 40 70
5 80 100
Table 2: O2 consumption in Danio rerio exposed to sub lethal concentration <strong>of</strong> <strong>formalin</strong>
S.
NO
TIME
(HOUR)
OXYGEN
CONSUMPTION IN
CONTROL (ml/g/hr)
OXYGEN
CONSUMPTION IN
TREATED FISH
(ml/g/hr)
1 24 1.4 1.48 +10.6
2 48 1.01 -19.8
3 72 0.080 -37.5
4 96 0.065 -62.4
(Significant at P< 0.01)
5. References
%
INCREASE OR
DECREASE
1. Bauer O.N., Musselius V.A and Yu Strelkov A., (1969), Diseases <strong>of</strong> pond fishes,
Israel Program for Scientific Translations, Jerusalem. English Translation, pp 220.
2. Jhingran V.G., (1977), Fish and fishers <strong>of</strong> India, Hindustan Publ. Corp. (India), New
Delhi, pp 954.
3. Kabata Z., (1970), Crustacea as enemies <strong>of</strong> fishes in S.F. Snieszko & H.R. Axelrod
(Eds). Diseases <strong>of</strong> fishes, Book 1. TFH Publishers, Jersey City, pp 171.
4. Konar S.K. and Sarkar S.K., (1983), Acute toxicity <strong>of</strong> agricultural fertilizers to fishes,
Geobios, 10, pp 6-9.
5. Lieschke G. J. and Currie P.D., (2007), Animal models <strong>of</strong> human disease: Zebra fish
swim into view, Nature reviews; Genetics, 8, pp 353-367.
6. Olaifa F.E, Olaifa A.K and Lewis O.O., (2003), Toxic stress <strong>of</strong> lead on Clarias
gariepinus (African Catfish) fingerlings, African Journal <strong>of</strong> Biochemical Research, 6,
pp 101-104.
Varusai Naina Mohammed. S, Asrar Sheriff. M, Sultan Mohideen. A.K, Md. Azmathullah. N
International Journal <strong>of</strong> Environmental Sciences Volume 2 No.4, 2012
1907