Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"host specialization"”.
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Adaptation to the host-plant, and the evolution of host specialization, in 'cycad weevils' (Coleoptera: Brentidae)
This thesis deals with host relationships in an enigmatic and seemingly primitive group of weevils belonging to the genus Antliarhinus (Coleoptera: Brentidae). These beetles occur only on species of the cycad genus Encephalartos and appear to retain an ancient association with cycads, a group of …
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Host Range, Fungicide Resistance and Management of Pseudoperonospora cubensis, Causal Agent of Cucurbit Downy Mildew
… hypothesized that it may also have a different host specialization pattern than the previously described populations in the United States. To determine the host specialization of contemporary populations, leaf disks of 12 cucurbit host differentials were inoculated with 32 isolates of P. …
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Revision of Pocadius Erichson (Coleoptera: Nitidulidae)
… into the Old World tropics and New World. Host specialization on gasteromycetes fungi by Pocadius species was shown not to be obligate but rather facultative. Some sympatric species were shown to have temporally disjunct occurrences that may provide reproductive isolation.
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Population genetic frameworks and functional genomics of Mycobacterium bovis
… and isolated from a variety of mammalian hosts - cattle (n=25), deer (n=6), elk (n=10), elephant (n=2), swine (n=7), and humans (n=24) were used for the study. Sixty-one M. tuberculosis isolates from human, primates, birds, and elephants were also included in the analysis. Based on 206 …