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Study of colocynth Citrullus colocynthis and eucalyptus Eucalyptus spp. toxicity on some biological aspects of Culex pipiens | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 9, Issue 1, 2009, Pages 63-68 PDF (0 K) | ||
| Author | ||
| Suhad H. Hassan | ||
| Abstract | ||
| In this study, series of laboratory experiments were conducted to test the effect of various concentrations of water extract fruits of colocynth Citrullus colocynthis and leaves of eucalyptus Eucalyptus spp. on some biological aspects of mosquito Culex pipiens (mortality, growth period, productivity and fertility).The results showed that eucalyptus water extract was more active than colocynth water extract in some aspects. Higher pupal mortality were 29.3%when tested with water extract of eucalyptus at 100% concentration, and larval mortalities of the four larval instars were 90 ,90 ,63.4 , 45 % respectively in the same treatment after 24 hour of treatment, while the accumulated mortality rates were between 6.7-100% and 6.7-93.3% for each the eucalyptus and colocynth extract respectively in the concentration being used (0-100%).The growth period of immature stages were 14 days in 75% con. of eucalyptus water extract, female productivity decreased to 112.6 eggfemale and fertility reducedto 89.2% in 50% con. of eucalyptus water extract | ||
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