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Evolvability Of The Skull: A Study Of Genetic Basis And Integration In The Teleost Craniofacial Skeleton, Yinan Hu
Doctoral Dissertations
As the field of evolutionary biology pivots away from a gene-centric view of how adaptive evolution proceeds, renewed emphasis is placed on the origin of phenotypic variation. Understanding the developmental processes that underlie the production of novel traits, and how they might influence evolvability, is considered a primary goal in the on-going “extended evolutionary synthesis”. The following dissertation explores these questions in the context of adaptive radiations in fish, with a focus on morphological variation in the craniofacial skeleton. Specifically, the first chapter investigates the genetic and developmental basis of shape (co-)variation in the feeding apparatus of African cichlid fishes, …
The Contributions Of Evolutionary Divergence And Phenotypic Plasticity To Geographic Variation In The Western Fence Lizard, Sceloporus Occidentalis, Christine R. Buckley, Duncan J. Irschick, Stephen C. Adolph
The Contributions Of Evolutionary Divergence And Phenotypic Plasticity To Geographic Variation In The Western Fence Lizard, Sceloporus Occidentalis, Christine R. Buckley, Duncan J. Irschick, Stephen C. Adolph
Biology Department Faculty Publication Series
Local genetic adaptation and phenotypic plasticity are two mechanisms that can have marked effects on the morphology, performance, and behaviour of animals, producing geographic variation among populations. However, few studies have examined how these mechanisms interact during ontogeny to shape organismal phenotypes. We incubated eggs of the western fence lizard, Sceloporus occidentalis, from four populations (representing two latitudes and altitudes) in either a warm or cool environment in the laboratory. We then raised the hatchlings under common laboratory conditions, measured morphological and performance traits until 5 weeks of age, and compared juvenile morphology with that of field-caught adults from …
Piping Plover (Charadrius Melodius) Conservation On The Barrier Islands Of New York: Habitat Quality And Implications In A Changing Climate, Jennifer Ruth Seavey
Piping Plover (Charadrius Melodius) Conservation On The Barrier Islands Of New York: Habitat Quality And Implications In A Changing Climate, Jennifer Ruth Seavey
Open Access Dissertations
Habitat loss is the leading cause of species extinction. Protecting and managing habitat quality is vital to an organism's persistence, and essential to endangered species recovery. We conducted an investigation of habitat quality and potential impacts from climate change to piping plovers (Charadrius melodius) breeding on the barrier island ecosystem of New York, during 2003-2005. Our first step in this analysis was to examined the relationship between two common measures of habitat quality: density and productivity (Chapter 1). We used both central and limiting tendency data analysis to find that density significantly limited productivity across many spatial scales, especially broader …
Biotechnology And Industrial Development, Center For Economic Development
Biotechnology And Industrial Development, Center For Economic Development
Center for Economic Development Technical Reports
Biotechnology is defined by the industry as the commercial application of modern biology. It is a fairly young industry and it recently celebrated its 20th anniversary in 1996. There are over 13,000 biotech companies in the United States which employ over 100,000 people. The main focus of their research includes agricultural, environmental and medical applications. The agricultural sector research is directed towards food, food processing, animal and plant breeding applications. The areas in medical research include pharmaceuticals, gene therapy, medical instruments and medical software. Environmental applications deal with bioremediation, biopesticides and other alternatives to waste removal. The biotech industry is …