University of Khartoum

Effect of Some Poisonous Plant Diets On The Development, Emergence and Sex Ratio Of The Mosquito Culex Quinquefasciatus Say (Diptera :Culicidae)

Effect of Some Poisonous Plant Diets On The Development, Emergence and Sex Ratio Of The Mosquito Culex Quinquefasciatus Say (Diptera :Culicidae)

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Title: Effect of Some Poisonous Plant Diets On The Development, Emergence and Sex Ratio Of The Mosquito Culex Quinquefasciatus Say (Diptera :Culicidae)
Author: Ahmed, Nahla Abdalla Mohamed
Abstract: These Experiments were carried out to investigate the effect of feeding larvae of the mosquito Culex quinquefasciatus Say on some medicinal plants. The plants selected were Adenium obesum (leaves ,flowers, stem and bark ) and Adansonia digitata leaves.These plants proved to be toxic materials to the larvae. o.40gm seems to be optimum quantity for each plant to secure emergence of 50 adults .Sera Vipan ( Fish food) was used as a control . Appearance of the first pupa , duration of pupation , number o pupea prodused , percentage of adults emerging and number of days survived by non-fed adult were recorded. Results showed that; leaves of Adenium Obesum and Adansonia digitata are less toxic than their flowers ,bark and stem. the larvae showed high percentages of emergence and low mortality in larvae. Flowers ,bark and stem showed high percentage of mortality in larvae. Males emerged first followed by females .The sex ratio mostly 1:1. These observations were confirmed by wild collections . Conclusion : This study revaled that flowers and stem of Adenium obesum have hightoxicity than other substance and they can used screened to control the pre-stages of Culex quinquefasciatus.
URI: http://khartoumspace.uofk.edu/123456789/26125


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