| 1. | Its host specificity made the beetle a relatively safe choice for introduction.
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| 2. | There are several types of rhizobia, and some have a high degree of host specificity.
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| 3. | There is evidence of host specificity and selection of particular biting sites for some species.
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| 4. | Recent studies proposed to discriminate between two different types of evolutionary changes in host specificity.
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| 5. | However, the degree of host specificity varies strongly.
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| 6. | "Trichogramma " species vary in their host specificity.
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| 7. | All symbiotic species, such as parasites, pathogens and mutualists exhibit a certain degree of host specificity.
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| 8. | "Plasmodium " species were originally classified into subgenera based on their morphology, location, and host specificity.
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| 9. | Many other host specificity, and competitor number.
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| 10. | Such narrow host specificity can be costly over evolutionary time, however, if the host species becomes extinct.
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