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 “"Species Diagnostic"”.
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Chloroplast DNA phylogenetics of the North American chestnuts and chinquapins (Castanea Mill., Fagaceae)
… currently recognized North American Castanea species. Diagnostic morphological character states and a unique haplotype were shared among C. pumila and a plant tentatively identified as C. dentata in one sympatric site, suggesting past hybridization and chloroplast capture. Surprisingly, the …
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STUDIES ON INSECTICIDE RESISTANCE IN TUTA ABSOLUTA (MEYRICK), WITH SPECIAL EMPHASIS ON CHARACTERISATION OF TWO TARGET SITE MECHANISMS
… to confer reduced sensitivity in other arthropod species. These included L1014F, M918T, T929I and L925M mutations. Characterisation and sequencing of Ace gene revealed the existence of a single mutation A201S previously related to organophosphate insensitivity in several insect species. Diagnostic …
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Bighead and silver carp hybridization in the Mississippi River Basin: prevalence, distribution, and post-zygotic selection
… carp (H. molitrix) are U.S. federally injurious species, and although suspected to be reproductively isolated in their native range in eastern Asia, form multi-generational hybrids within the Mississippi River Basin (MRB). My dissertation explores the complexity and structure of bighead and …
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Comparative Phylogeography of Central African Duikers Using Non-invasive Sampling Methods
… Second, since it is impossible to determine the species identity of duiker feces solely based on their morphology, a simple and reliable molecular method was needed. A tree-based approach based on ~650 base pairs of the control region amplified from reference samples was found to be the most …
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Hiding in plain sight: unveiling cryptic diversity and patterns in bumble bees
… and the vibrant color patterns of nearly all species of bumble bees are well mapped and described. In addition, the natural history, colony structure and social behavior of bumble bees are well documented and a well-supported phylogeny of the ~250 species currently recognized within the genus …