Index Catalog // ScholarsArchive@OSU

An investigation of the alarm response in anuran amphibian larvae

Creator:: Hews, Diana K.
Abstract:: The results of my research suggest that tadpoles of the Western toad (Bufo boreas) and the Cascades frog (Rana cascadae) display an alarm response to chemicals from injured conspecific tadpoles. Furthermore, results suggest that the Bufo boreas alarm response can be elicited by a natural predator when it feeds on...
Resource Type:: Masters Thesis
Full Text:: explain solely within the context of individual selection. The adaptive functions suggested for alarm

Unpalatability as an antipredator defense in anuran larvae

Creator:: Peterson, Jeffrey A.
Abstract:: The tadpoles of several anuran species with groupforming larvae are relatively unpalatable to many of their potential predators. To more fully understand the role of palatability and its relationship to group formation as an antipredator defense in anuran amphibian larvae, I investigated the palatabilities of the larvae of three species...
Resource Type:: Masters Thesis
Full Text:: Unpalatability as an antipredator defense in anuran larvae

Adaptive correction techniques for delta-sigma A/D converters

Creator:: Abdennadher, Salem
Abstract:: Oversampling analog-to-digital and digital-to-analog converters are gaining more popularity in many signal processing applications. Delta-sigma modulators are used in practical applications of oversampling systems because of their apparent practical advantage over other oversampling converters in terms of insensitivity to the inevitable imperfection of the analog circuitry. In Δ∑ modulators, analog...
Resource Type:: Masters Thesis
Full Text:: Adaptive correction techniques for delta-sigma A/D

Defenses of Susceptible and Resistant Chinook Salmon (Onchorhynchus tshawytscha) Against the Myxozoan Parasite Ceratomyxa shasta

Creator:: Bjork, Sarah J., Zhang, Yong-An, Hurst, Charlene N., Alonso-Naveiro, Maria E., Alexander, Julie D., Sunyer, J. Oriol, and Bartholomew, Jerri L.
Abstract:: We investigated intra-specific variation in the response of salmon to infection with the myxozoan Ceratomyxa shasta by comparing the progress of parasite infection and measures of host immune response in susceptible and resistant Chinook salmon Oncorhynchus tshawytscha at days 12, 25 and 90 post exposure. There were no differences in...
Resource Type:: Article
Full Text:: of the fish host response 61 proposed three defense strategies against C. shasta: resistance

Structural studies of the antioxidant defense enzymes; copper, zinc superoxide dismutase and alkyl hydroperoxide reductase flavoprotein

Creator:: Roberts, Blaine R.
Abstract:: Oxygen derived radicals are involved in many aspects of life from aging and cell signaling to disease states as diverse as heart disease, diabetes, neurodegeneration and inflammation. Therefore, understanding the function of antioxidant defense proteins and the effects of oxygen derived radicals on protein function is essential to elucidate the...
Resource Type:: Dissertation
Full Text:: Biochemistry and Biophysics presented on May 1, 2007. Title: Structural Studies of the Antioxidant Defense

FIR report; Vol. 10, No. 2 (Summer 1988)

Creator:: Southwest Oregon Forestry Intensified Research Program. Adaptive Phase and Oregon State University. Extension Service
Resource Type:: Other
Full Text:: Adaptive FIA 1301 MAPLE GROVE DRIVE MEDFORD, OR 97501 (503) 776 -7116 FIR Specialists OLE HELGERSON

Sex and Survival: Reproduction and Anti-Microbial Defense in the Red-Sided Garter Snake (Thamnophis sirtalis parietalis)

Creator:: Blakemore, Leslie A.
Abstract:: The red-sided garter snakes (Thamnophis sirtalis parietalis) of Manitoba, Canada, have been extensively studied for decades with little investigation into their immune system. These animals live very close to the arctic circle and spend over half of the year underground brumating. The annual cycle of the red-sided garter snakes make...
Resource Type:: Masters Thesis
Full Text:: presented on December 1 2017. Title: Sex and Survival: Reproduction and Anti-Microbial Defense in the

Effects of Cu/Zn Superoxide Dismutase (sod1) Genotype and Genetic Background on Growth, Reproduction and Defense in Biomphalaria glabrata

Creator:: Bonner, Kaitlin M., Bayne, Christopher J., Larson, Maureen K., and Blouin, Michael S.
Abstract:: Resistance of the snail Biomphalaria glabrata to the trematode Schistosoma mansoni is correlated with allelic variation at copper-zinc superoxide dismutase (sod1). We tested whether there is a fitness cost associated with carrying the most resistant allele in three outbred laboratory populations of snails. These three populations were derived from the...
Resource Type:: Article
Full Text:: ) Genotype and Genetic Background on Growth, Reproduction and Defense in Biomphalaria glabrata Kaitlin M

Polygyny in the bobolink : habitat quality and the adaptive complex

Creator:: Martin, Stephen George, 1941-
Abstract:: The adaptiveness of polygyny in passerines poses a particularly intriguing problem. The altricial young of this group require extended parental care, but young of polygynous pairings generally lack the undivided attention of the male which young of monogamous pairings receive. Polygynous offspring may thus be undernourished and experience greater mortality....
Resource Type:: Dissertation
Full Text:: Polygany in the bobolink: habitat quality and the adaptive

Adaptive diversity and divergence at frog antimicrobial peptide loci

Creator:: Tennessen, Jacob A.
Abstract:: In this dissertation I study evolutionary patterns at genes encoding antimicrobial peptides (AMPs) in frogs. AMPs are short, amphipathic, cationic, secreted proteins that kill bacteria and other pathogens through a non-catalytic mechanism that involves binding to and disrupting the microbial cell membrane. In many animal taxa, positive selection is much...
Resource Type:: Dissertation
Full Text:: presented on February 27, 2009. Title: Adaptive Diversity and Divergence at Frog Antimicrobial Peptide

ScholarsArchive@OSU

An investigation of the alarm response in anuran amphibian larvae

Unpalatability as an antipredator defense in anuran larvae

Adaptive correction techniques for delta-sigma A/D converters

Defenses of Susceptible and Resistant Chinook Salmon (Onchorhynchus tshawytscha) Against the Myxozoan Parasite Ceratomyxa shasta

Structural studies of the antioxidant defense enzymes; copper, zinc superoxide dismutase and alkyl hydroperoxide reductase flavoprotein

FIR report; Vol. 10, No. 2 (Summer 1988)

Sex and Survival: Reproduction and Anti-Microbial Defense in the Red-Sided Garter Snake (Thamnophis sirtalis parietalis)

Effects of Cu/Zn Superoxide Dismutase (sod1) Genotype and Genetic Background on Growth, Reproduction and Defense in Biomphalaria glabrata

Polygyny in the bobolink : habitat quality and the adaptive complex

Adaptive diversity and divergence at frog antimicrobial peptide loci

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