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Articles by Johnson O. Adejinmi
Total Records ( 1 ) for Johnson O. Adejinmi
  Johnson O. Adejinmi
  Effect of various concentrations of sodium chloride (NaCl) solution on the oviposition capacity of engorged adult females and hatchability of eggs of dog ticks: Rhipicephalus sanguineus and Haemaphysalis leachi leachi was investigated under laboratory condition. The concentrations of sodium chloride solution used were 2, 5, 10, 30 and 60% and saturated solution and the duration of times of immersion were 2, 4, 6, 12 and 24 h. The engorged adult females of R. sanguineus and H. leachi leachi did not oviposit after immersion in saturated sodium chloride solution. The number of eggs oviposited after treatment in 2% Nacl solution by R. sanguineus (1272.33±57.73) and H. leachi leachi (1122.31±120.09) were respectively lower than those of their controls 2665.31±42.5 and 1881.00±228. Adult females of H. leachi leachi did not oviposit when immersed in any of the sodium chloride concentrations for 24 h. The time of exposure of the eggs of both species to NaCl solutions did not affect their hatching capability. The eclosion periods of eggs in all the concentrations of NaCl solution were shorter than their controls. The percentage hatchability of eggs after immersion in 2, 5, 10, 30 and 60% NaCl solutions were lower than their controls. The percentage hatchability decreased as the concentration of NaCl solution increased with no hatching of eggs in saturated NaCl solution. I recommend that saturated NaCl solution be integrated into the overall policy of control of dog ticks because of its acaricidal properties causing outright mortality of engorged adult females and eggs of R. sanguineus and H. leachi leachi. This will drastically reduce the overdependence on imported acaricides.
 
 
 
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