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The Biobrio 9(1 & 2), 2022

Analysis of toxicity effect of DAP on Anabas testudineus (Ham.)

Ganesh Khan, R. B. Jha & Arun Kumar


DAP is a standard fertilizer widely used in agriculture. The present work was designed to study
the effect of sub-lethal concentration of DAP on some haematological parameters of Anabas
testudineus (Ham.). A comparison of control and treated fish showed a change in blood
parameters due to the toxic effects of this fertilizer. The initial increase in both studied total
count (TC) of RBCs and haemoglobin concentration and then gradual decrease of these two
parameters with the increase of doses indicated slow recovery from adverse effects of DAP in
this fish. Differential leukocyte count indicated a significant response due to the toxic effect of
this fertilizer, though the count of lymphocytes, heterophils and eosinophils decreased. In
addition, an increase in basophils, neutrophils and thrombocytes was taken place with an
increasing dose of DAP. Elevation in the number of these cells revealed recovery and exhibited
resistance of this fish.

Keywords:    DAP, Hematological Parameters, Anabas testudineus

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