4423
The Ixodes fauna in the Michourin region , where the pastures in 1971 were grazed only by sheep , shows the following trends : H . punctata and R . turanicus ticks , which are preferably parasitising in sheep , increase their relative share .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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