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Showing 1 to 14 of 14 for “"North American species"”.
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A revision of the North American species of the genus Scopula (lepidoptera, geometridae)
The North American representatives of the large, worldwide Geometrid moth genus Scopula Schrank are redefined, redescribed, and illustrated. Of 69 names applied to the North American fauna, 22 are considered valid species, and two subspecies are defined here for the first time. Complete synonymy …
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A revision of the North American species of Typhlocyba and its allies (Homoptera, Cicadellidae)
Dissertation (Ph.D.)--University of Kansas, Entomology, 1952.
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Evolution of the Higher Categories of Cercopidae, With a Revision of the North American Species of Aphrophora (Homoptera)
Made available in DSpace on 2014-12-05T21:33:55Z (GMT). No. of bitstreams: 1 0018175.pdf: 4538276 bytes, checksum: a1a0e447f09f122a5caa21c89f78eba3 (MD5) Previous issue date: 1956
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A Phylogenetic Analysis of Species Relationships in Hemlocks, the Genus <em>Tsuga</em> (Pinaceae).
… <em>Tsuga</em> is comprised of eight extant species found in North America and East Asia and four species represented by fossils from Europe and Japan. This study presents the first phylogenetic analysis based on structural, biochemical, and molecular sequence data. Characters obtained from …
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COMPARATIVE ECOPHYSIOLOGY OF NATIVE AND INVASIVE PLANTS ACROSS POPULATIONS, SPECIES, AND CONTINENTS
<p>Invasive species are a persistent threat to biodiversity and agriculture that cost countries millions of dollars each year. Despite the scale and impact of the problem of invasive species, it remains a mystery why some introduced species become invasive and others remain benign. Here, I examined …
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Molecular Taxonomy of Triatominae
… indicated that two distinctive Triatominae species from South America could be distinguished from typical North American species; it was also possible to distinguish the monotypic genus Dipetalogaster from other North American populations.</p> <p>A total of 180 electrophoretic tracings of …
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Contribution to the systematics of the genus Aphis (Hemiptera:Aphididae)
… gossypii and fabae groups have differing set of species. My results showed that current genus Toxoptera should be a subgenus within Aphis. The current subgenus Bursaphis is a synonym of subgenus Aphis s. str. The phylogeny demonstrated the relationship of the North American species of the …
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A scanning electron and light microscopy study of the red tide dinoflagellate Gymnodinium sp. from False Bay, South Africa
… was used in an attempt to identify this species which shared certain features with the following species: (a) Gymnodinium nagasakiense Takayama et Adachi, the western Pacific species, with which it has the external morphology in common, (b) Gyrodinium aureolum Hulburt, the North Atlantic …
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Aggressive calling in treefrogs
… received little attention in frogs. Most frog species produce some kind of aggressive vocalization. These aggressive calls are often given in the context of defense of territories or temporary calling spaces. Little is known about how aggressive calls are used to mediate these interactions. In …
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Aphytophagy in the Miletinae (Lycaenidae): Phylogeny, Ecology, and Conservation
… Miletinae, where all of the approximately 150 species are presumed or known to be aphytophagous. With the exception of the North American species <em>Feniseca tarquinius </em>, the subfamily is restricted to the Old World, in particular, Africa and South-East Asia. The focus of this study was a …
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Chemical communication in a declining North American anuran amphibian, the northern leopard frog (lithobates pipiens)
… (CR) genes have only been identified for Xenopus species with no previous identifications for any other adult anuran species. Here, I examine the evolutionary and functional implications of northern leopard frog (Lithobates pipiens) CRs, identified through collaboration, by conducting a …
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Population dynamics and reproductive ecology of the gynodioecious prairie species Lobelia spicata Lam. (Campanulaceae)
… spicata Lam. (Campanulaceae) is a common prairie species found throughout Illinois. Its breeding system, gynodioecy, is relatively rare, and is characterized by having female and hermaphrodite plant morphs coexisting within populations. Although some data on the reproductive ecology of L. spicata …
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Assessing threats to North American bats: impacts of white-nose syndrome and climate on reproduction and survival
Many cave-hibernating North American bat species currently face the threat of extinction due to the newly emergent wildlife disease, white-nose syndrome (WNS). WNS is a fungal disease that has been causing catastrophic declines of bat populations in the eastern United States and Canada since it …