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Showing 1 to 20 of 113 for “"morphological variation"”.
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Morphological Variation and Community Science in Orthoptera
<p>Patterns of morphological divergence across species’ ranges provide insight into local adaptation and speciation. Here, we compare phenotypic divergence among 4,221 crickets from 337 populations of two related species of field cricket, Gryllus firmus and G. pennsylvanicus and their hybrids. We …
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Investigation of Craniofacial Morphological Variation at Sully (39SL4)
… genetics to identify factors contributing to the morphological variability between multiple, geographically distinct burial areas associated with the Sully village site (39LS4) in the Middle Missouri region of South Dakota. In particular three burial areas at Sully (A, D, and E) provide adequate …
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Investigation of Craniofacial Morphological Variation at Sully (39SL4)
… genetics to identify factors contributing to the morphological variability between multiple, geographically distinct burial areas associated with the Sully village site (39LS4) in the Middle Missouri region of South Dakota. In particular three burial areas at Sully (A, D, and E) provide adequate …
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Morphological Variation of the Genus Peromyscus in Nebraska
… the large number of species and the geographic variation within most species. Peromyscus does, indeed, encompass a large number of species. In 1964, Hooper and Musser suggested some modifications of the current classification to include 13 species-groups. Within these 13 groups, they named 59 …
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Transcriptomic Insights into the Morphological Variation Present in Bromeliaceae
… This study identified transcripts related to the morphological gradient and highlighted how each ecological type has a particular set of adaptations and strategies for survive in a particular regime.</p>
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Identification of the Molecular Basis of Morphological Variation in Avian Beaks
… chicken, duck, and quail, both before and after morphological variation is evident. I found that neural crest cells have established a species-specific gene expression profile that predates morphological variation. In addition to expression changes in the Bmp and Calmodulin pathways, previously …
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Behavioral and Morphological Variation in Clover Mites From Different Host Plants
Made available in DSpace on 2014-12-05T21:34:01Z (GMT). No. of bitstreams: 1 6003998.pdf: 6093191 bytes, checksum: 37e14315402b813440e7c549b6d1cdd9 (MD5) Previous issue date: 1960
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Paranthropus paradoxes: Patterns of morphological variation in East African 'robust australopithecines'
… record. Its early discovery, together with its morphological distinctiveness, have defined this genus as a unique hominin lineage parallel to our own. Paranthropus boisei, who lived in East Africa between 2.3 and 1.4 million years ago, stands out amongst ‘robust australopithecines’ for its hyper …
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Ecological and evolutionary consequences of worker morphological variation in ants (Hymenoptera: Formicidae)
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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Evolutionary and genetic basis of morphological variation in Populus nigra (European black poplar)
… in frequency. In forest trees, intraspecific variation in leaf size, branching architecture, and growth rate among populations are considered adaptive and likely related to climatic differences between sites. A previous common garden study of Populus nigra L. showed morphological variation to …
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The palaeoredox condition and morphological variation of microbialites from the Nama Group, South Africa
… zone. Small-scale spatiotemporal feature variations indicate there was widespread turbulence across the reef, potentially indicating rapid fluctuations in water depth or the creation of topographic heterogeneity by the reef. The laminae of the microbial material are composed of micritic …
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A finite element study of the human cranium : the impact of morphological variation on biting performance
… fourth chapter assessed FE model sensitivity to variations in applied muscle forces. Results showed that a cranial FE model behaved reasonably robustly under variations in the muscle loading regimen.Chapter 5 uses the conclusions from the previous studies to build FE models of six human crania, …
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Pup ontogeny and factors influencing behavioural and morphological variation in naked mole-rats, Heterocephalus glaber (Rodentia, Bathyergidae)
… quantitative description of the behavioural and morphological development of naked mole-rats from birth through to adulthood. This study laid an empirical foundation for the subsequent testing of hypotheses pertaining to within and between colony conflict as well as for a study on the existence …
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Physiological and morphological variation within and between populations of Suillus granulatus, as determined by mycorrhizal synthesis experiments
… characters were subsequently used to measure variation in mycorrhizal effectiveness among the allopatric populations of Suillus granulatus. Isolates associated with Pinus strobus were most effective with Pinus strobus and least effective with the other trees, whereas isolates from Pinus …
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Phylogenetics of the Malacothamnus alliance (Malvaceae): Assessing the role of hybridization and molecular and morphological variation in species delineation
… levels vary, and there is a lack of distinct morphological characters to delineate taxa. Several taxonomic treatments have been prepared for each genus, but relationships within the genera and the relationship of the Malacothamnus alliance to others in the Malvaceae remains unknown. This …
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The Detection of Morphological Variation across Time in Two Roan Mountain Endemics: <em>Geum radiatum</em> and <em>Houstonia montana</em>.
<p>Morphological variation between geographically distant populations has long been recognized. The primary objective of this study was to test whether nonrandom shifts in morphology have occurred across a 150-year time span in two rare, endangered plant species <em>Geum radiatum</em> and …
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Assessment of farmer preferences, constraints and angro-morphological variation among Bambara groundnut (Vigna subterranea (L.) Verdc.) accessions as a basis for seed yield selection index
Bambara groundnut (Vigna subterranea (L) Verdc) is an orphan, underutilised and less exploited crop in Africa and beyond, Yet, it is an essential traditional crop for the majority of local farmers. The first step in preparing such local germplasm for possible pre-breeding is to undertake a needs …
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Tetraria triangularis (Boeck.) C.B. Clarke and the Cape fold archipelago : an analysis of genetic and morphological variation in a high-altitude species native to the moutains of the Cape floristic region
The Cape Floristic Region (CPR) is renowned for its high plant species richness and high floristic endemism (Marloth 1929, Takahatjan, 1986, Goldblatt and Manning 2000, Linder 2003). A small number of clades (33) account for 50% of the species diversity, indicating that much of the diversification …
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