Abstract
One hundred and seventy six adult female cattle ticks, Boophilus microplus, were collected to observed the influence of their body development on their eggs fertility under laboratory conditions (22°-32°C and 84-92% relative humidity) . The regression analysis result shown that as the body developed, eggs production and eggs fertility increased, but there was no correlation between ticks weight and the incubation periode . The relation between ticks weight and eggs production was shown as Y = -309 .433 + 13 .868X and r = 98 .5 % whereas the influence of ticks body development on eggs fertility was shown as Y = 8 .224 + 0 .338X, r = 92 .0% and the incubation periode was about 21-26 days . The fertile eggs begin to be produced by ticks with body weight of about 35-49 mg and fertility 28.39%.
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