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Acute toxicity of water extracts of bark of the neem plant, Azadirachta indica [Lodd] to the cichlid, Tilapia zilli [Gervais]

100%

Omoregie E., Okpanachi M. A.

Acta Hydrobiologica

1997

tom 39

nr 1-2

The effects of the extract on the mortality rate, opercular ventilation rate and some behavioural responses of T. zilli were investigated under laboratory conditions, over a 96 h exposure period. The 96 h LC50 was determined as 6.03 mg L-1. The extract led to an initial increase in the opercular ventilation rates which then decreased significantly (P<0.05). Prior to death, darkening of the exposed fish, erratic swimming, and respiratory distress were observed. The implication of these findings in relation to environmental pollution is discussed.

Ograniczanie wyników

1 Acta Hydrobiologica

1 Okpanachi M. A.

1 Omoregie E.

1 1997

Wyniki wyszukiwania

Acute toxicity of water extracts of bark of the neem plant, Azadirachta indica [Lodd] to the cichlid, Tilapia zilli [Gervais]