Document Detail

Eco-friendly control of mosquito larvae by Brachytron pratense nymph.
MedLine Citation:
PMID:  17450955     Owner:  NLM     Status:  MEDLINE    
The study reported here revealed the biocontrol efficacy of aquatic nymphs of the dragonfly Brachytron pratense against larvae of the mosquito Anopheles subpictus. It was found that during a 24-hour study period, a nymph of B. pratense would consume (mean value of three observations) 66 fourth-instar An. subpictus larvae released in a water bowl containing 3 liters of pond water. The consumption rate was significantly higher (p < .05) during the lights-on phase of the experiment than during the lights-off phase (t = 2.15). Under field conditions, a significant decrease (p < .05) in larval density in dipper samples was observed 15 days after the introduction of dragonfly nymphs (10 individuals) in concrete tanks. The biocontrol potential of the nymphs under field conditions was also indicated by a significant increase (p < .05) in the density of mosquito larvae 15 days after the removal of nymphs. In the control tanks (where no nymphs were introduced), mean larval-mosquito density did not differ significantly throughout the study period (p > .05).
S N Chatterjee; A Ghosh; G Chandra
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of environmental health     Volume:  69     ISSN:  0022-0892     ISO Abbreviation:  J Environ Health     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-04-24     Completed Date:  2007-05-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405525     Medline TA:  J Environ Health     Country:  United States    
Other Details:
Languages:  eng     Pagination:  44-8     Citation Subset:  IM    
Department of Zoology, University of Burdwan, Mosquito Research Unit, Rajbati, Bardhaman, West Bengal, India.
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MeSH Terms
Mosquito Control / methods*
Pest Control, Biological / methods*
Predatory Behavior

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