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Through uses the Chinese egg rope roundworm infection time larva (ⅡThe time larva) infects the Heliothis avmigera hubner four age larvae the method, examines the Chinese egg rope wireworm parasitism to the host Heliothis avmigera hubner thick liquid blood corpuscle delaying ability influence. The findings showed: After Heliothis avmigera hubner by Chinese egg rope wireworm parasitism, first day of thick liquid blood corpuscle percentage of elongtation large scale drop, second, third, fourth day of constant rise, but compares the control group saying that experimental group's percentage of elongtation is lower than the control group. But the control group the thick liquid blood corpuscle's percentage of elongtation change is not big in the entire experiment process. With the F-test, indicated finally that the host thick liquid blood corpuscle percentage of elongtation's change has the obvious difference.Chinese cable by using nematode eggs infected larvae (Ⅱ stage larvae) infection instar larvae of the cotton bollworm four methods and cable Chinese egg parasitic nematodes of the host blood cells bollworm pulp capacity of extension. The results showed that: When the cotton bollworm eggs claim by the Chinese parasitic nematodes, the first day of plasma blood cells extension of a significant drop in the second, third and four days continued to rise, but compared to the control group, the rate of the experimental group extended were lower than the control group. And the control group in the entire process of blood cells in the pulp extension of a little change. Using F-test results showed that the blood plasma cells extended host the rate of change has obvious difference.两种 自己选把 |
