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 20 of 32 for “"color pattern"”.
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Batesian Mimicry: The Selective Advantage of Color Pattern
Made available in DSpace on 2014-12-14T07:04:05Z (GMT). No. of bitstreams: 1 7913501.pdf: 2466067 bytes, checksum: c8d5b8ffdb7f6333aad4f81ed0b8450c (MD5) Previous issue date: 1978
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THE DEVELOPMENTAL BASIS AND EVOLUTION OF WING COLOR PATTERN IN BUTTERFLIES
… In this work, I study the evolution of wing color patterns in butterflies—a system famous for its striking variation in form and complexity. The specific goals of my work were to test Wnt gene functions in patterning wing colors, and to characterize the regulatory architecture modulating …
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Material matters : color, pattern, cognition, and perception in quilts from the Winedale Collection
… quilts issued from deliberate engagement with color and pattern—work that was difficult, intellectual, and often solitary. The ability to handle color and pattern simultaneously and expertly was informed by women’s experience with domestic and industrial textile production, and with the major …
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Avian diet and visual perception suggests avian predation selects for color pattern mimicry in bumble bees
… local bumble bee species tend to share the same color patterns. Statistical confirmation of these trends has resulted in the hypothesis that these similarity groups are Müllerian mimicry rings. Bumble bee color patterns are thought to convey protection from avian predators, thus creating …
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Phylogeny and color pattern evolution in a New World bumble bee (Hymenoptera: Apidae: Bombus: Pyrobombus) species complex
… charismatic species possesses a highly variable color pattern throughout its wide distribution across montane and lowland regions, which raises the question of whether or not it is in fact one species. I examined the molecular phylogeny of B. ephippiatus populations and its sister species, B. …
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Developmental timing of pupation and analysis of color pattern response to thermal stress in Bombus impatiens (Hymenoptera: Apidae)
… 250 species that exhibit high diversity in color pattern phenotypes, colony sizes, and habitats across the globe. Nearly two centuries of research have investigated the biological factors leading to their widespread distribution and ecological adaptability. As purported members of Müllerian …
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A contribution to species delimitation and taxonomy of North American Entomobrya (Collembola: Entomobryidae)
… based solely on traditional morphological and color pattern characters provide a very conservative estimate of actual species diversity. Many described species in the genera Orchesella, Isotomurus and Lepidocyrtus have been shown to comprise complexes of several morphologically cryptic species …
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A morphological study of first-stage nymphs of five Periplaneta species (Dictyoptera: Blattidae)
… have very setose thoracic nota·and a banded color pattern, while thoracic nota of P. americana and P. japonica are less setose and solid in color. Great variability of setal number and color pattern probably exists among all the species in the genus.
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Mathematical quantification and statistical analysis of bombus (hymenoptera:apidae) dorsal color patterns
… evolutionary adaptation and visual signaling via color patterns since Fritz Müller first noticed it among Amazonian Heliconius butterflies. It has been documented in a wide variety of taxa, vertebrate and invertebrate alike, from birds to Chauliognathus beetles and bees. In bumble bees (Bombus), …
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Changing user behavior with home electricity use to reduce and shift the demand on the electric grid
… consisted of a prototype showing a traffic light color pattern of two lights. The first light indicated the price/emissions metric chosen based on user allegiance. The second light indicated the usage of electricity in their home.
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Blenko Glass Gallery
… to achieve the greatest possible variety and colorfulness in the weft. The warp must first and foremost be strong and of the correct tension, but as regards to color it needs merely to serve as a base. It is the weft that gives color, pattern and texture to the fabric, depending on the …
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Behavioral and genomic patterns of evolution during speciation via reproductive and agonistic character displacement
… (ACD). Both RCD and ACD can lead to a pattern of enhanced preferences for mating or fighting with conspecifics over heterospecifics in areas of sympatry compared to allopatry. Behavioral isolation can potentially evolve among populations within a species as a correlated effect of RCD or …
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The maintenance of variation in Cyprinodontiformes
… with extensive within-population color pattern variation found among males. I use these two species as case studies to examine the evolution and maintenance of color pattern variation. First, I examine a potential reason behind the evolution of a female mating preference for males …
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Hiding in plain sight: unveiling cryptic diversity and patterns in bumble bees
… centuries. The distributions 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 …
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Coloring time with CodaChrome
… adults to design and build interactive, dynamic color patterns on electronic jewelry and sculptures. We designed activities to introduce CodaChrome, our color pattern creation environment, along with ideas about color and material properties to children in the context of immersive design …
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The effect of female mate preference on the evolution of Batesian mimicry
… the hypothesis that females select the natural color pattern, an important aspect of the theory of the evolution of mimicry. Males were unpainted or were painted either yellow as a control or black to resemble a newly arisen mimetic pattern. Painted males were permitted three courtships to …
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Girinos de espécies de Hyla do grupo "Albosignata" (Amphibia, Anura, Hylidae)
… group was elaborated taking into consideration color pattern, oral features and some other morphological traits. Some remarks on ecological aspects and environmental prefferences were made, associating some of them as a wider reproductive period and lower altitude streams occupation with the …
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Lenticular Objects: 3D Printed Objects with Lenticular Lens Surfaces That Can Change their Appearance Depending on the Viewpoint
… lens distribution and the corresponding surface color patterns, we can determine which appearance is shown to the user at each viewpoint. We built a 3D editor that takes as input the 3D model, and the visual appearances, i.e. images, to show at different viewpoints. Our editor then calculates the …
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Social behavior and kinship in the four-toed salamander, Hemidactylium scutatum
… and often reflects an isolation by distance pattern. In this study, I examined dispersal and population structure in H. scutatum from a local to a regional scale, focusing on the interaction between relatedness and dispersal (kin discrimination) and the potential for phenotypic traits to be …
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Análise filogenética das espécies de Castoraeschna Calvert, 1952 (Insecta, Odonata, Aeshnidae)
… consensus tree has the following topology: ( C. colorata, C. margarethae, C. pseudocolorata (C. coronata, C. tepuica (C. castor, C. areal)) (C. longfieldae, C. itatiaia, C. Januaria, C. decurvata)). Castoraeschna is hypothesized as a monophyletic group based on 11 exclusive apomorfies: …
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