Title: Toxicity of Diluted Dyeing and Printing Industry Effluent to a Penaeid Prawn, <i>Parapenaeopsis sculptilis</i> (Heller)
Abstract: Abstract Experiments were carried out on the toxicity of diluted dyeing and printing industry effluent to a penaeid prawn, Parapenaeopsis sculptilis (Heller). Effluent tolerance experiments showed that both juvenile and adult prawns were unable to withstand the increasing concentration of the effluent. Juveniles were more susceptible to effluent than adults. As a consequence of higher consumption of energy due to the disturbed metabolism a decrease in the metabolite content was observed, whereas the content of ions showed an irregular trend with all the concentrations. The behavioural study showed that before death both juvenile and adult prawns became inactive, followed by paralysis. The physico‐chemical nature of the effluent showed high amounts of solids, BOD, COD, sodium, magnesium, calcium, chloride, ammonium nitrogen, sulphate and absence of DO, probably causing an osmotic imbalance in the prawn body which leads to early mortality. Even a 1% concentration of such an effluent of a physico‐chemical nature was reported to be toxic to the prawns.
Publication Year: 1989
Publication Date: 1989-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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