Document heading
Seasonal variation in toxicity of citral against Fasciola larva

https://doi.org/10.12980/APJTB.4.2014C1102Get rights and content
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ABSTRACT

Objective

To test whether the larvicidal activity of citral against Fasciola varies by season.

Methods

Mortality of Fasciola larva in different month of year (2011–2012) in in vitro and in vivo condition were observed at 2 h, 4 h, 6 h and 8 h exposure of citral.

Results

In vitro toxicity of citral against redia was highest in between the June to August (8 h LC50: 2.58–2.62 mg/L), whereas against cercaria 8 h LC50 was in between 3.44–2.62 mg/L. Highest in vivo toxicity against redia was noted in between June to August (8h LC50: 4.20–5.09 mg/L). The lowest toxicity was observed from November to April. The highest temperature, free carbon dioxide, and lowest pH, dissolved oxygen were observed from June to August.

Conclusions

The present study conclusively shows that varying a biotic factor can significantly alter the in vitro and in vivo toxicity of citral against sporocyst redia and cercaria larva.

Keywords

Fasciolosis
Sporocyst
Redia
Cercaria
Citral
Lymnaea acuminata

Cited by (0)

Available online 7 Jul 2014

Foundation Project: Supported by Rajiv Gandhi National Fellowship (RGNF), University Grants Commission (UGC), and New Delhi, letter No. F1-17. 1/2010-12/RGNF-SC-UTT-152/(AS-III).