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Patterns of loggerhead turtle ontogenetic shifts revealed through isotopic analysis of annual skeletal growth increments

Creator:: Ramirez, Matthew D., Avens, Larisa, Seminoff, Jeffrey A., Goshe, Lisa R., and Heppell, Selina S.
Abstract:: Ontogenetic changes in resource use often delimit transitions between life stages. Ecological and individual factors can cause variation in the timing and consistency of these transitions, ultimately affecting community and population dynamics through changes in growth and survival. Therefore, it is important to document and understand behavioral and life history...
Resource Type:: Article
Full Text:: ., Avens, L., Seminoff, J. A., Goshe, L. R., & Heppell, S. S. (2015). Patterns of loggerhead turtle

Elevational differences in UV-B response by the long-toed salamander (Ambystoma macrodactylum)

Creator:: Thurman, Lindsey L.
Abstract:: Global amphibian declines have been attributed to numerous and often synergistic causes, such as invasive species, pathogens, and ultraviolet-B (UV-B) radiation. The effects of these stressors are context dependent and can vary with location, species, and populations. As sensitivity to UV-B has shown inconsistencies across amphibian taxa, it can be...
Resource Type:: Masters Thesis
Full Text:: : Elevational Differences in UV-B Response by the Long-toed Salamander (Ambystoma macrodactylum) Abstract

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Creator:: Ramirez, Ben S.
Abstract:: In the Pacific Northwest ecoregion of North America, sculpins represent a major constituent of freshwater assemblages in coastal rivers. Based on their prevalence and abundance, sculpins are likely important ecologically, yet little is known of their interactions with co-occurring species, such as widely studied salmon and trout (salmonines). In this...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Ben S

Gene expression in the liver of rainbow trout, Oncorhynchus mykiss, during the stress response

Creator:: Momoda, Tracey S.
Abstract:: The extent to which responses to stress are maladaptive or adaptive to the long-term survival of fish remains to be better understood. The aim of this study was to identify differentially expressed genes in the livers of rainbow trout, Oncorhynchus mykiss, responding to an experimental stressor. Gene expression responses were...
Resource Type:: Masters Thesis
Full Text:: tr a n sc ri p t c o p ie s/ 5 µ g T o ta l R N A a) b) c) d) a a b a c c d c

Endocrine regulation of final oocyte maturation and sex differentiation in salmonids

Creator:: Fitzpatrick, Martin S.
Abstract:: Sexual maturation and sex differentiation comprise facets of a common theme: reproduction. The endocrine system regulates many of the critical physiological processes necessary for reproduction and offers a framework within which technologies can be developed for controlling sexual maturation and sex differentiation. The studies described in this thesis were undertaken...
Resource Type:: Dissertation
Full Text:: S. Fitzpatrick J. Michael Redding2 Frank D. Ratti3 and Carl B. Schreck Oregon Cooperative

The effects of environmental stressors on cardiac gene expression and contractility in rainbow trout (Oncorhynchus mykiss)

Creator:: Momoda, Tracey S.
Abstract:: Rainbow trout (Oncorhynchus mykiss) experience a variety of stressors in their natural environment as well as in aquaculture that can have negative effects on their physiology. The effects of physiological stress and endocrine disruption have been well described in fish. However, there is a scarcity of information on the effects...
Resource Type:: Dissertation
Full Text:: Tracey S. Momoda, Kenneth J. Rodnick, Carl B. Schreck 14

Endocrine mediation of reproduction in coho salmon (Oncorhynchus kisutch)

Creator:: Fitzpatrick, Martin S.
Resource Type:: Masters Thesis

Description and prediction of broad-scale spatial variability in expression of anadromy in female Oncorhynchus mykiss in the John Day River, Oregon, USA

Creator:: Mills, Justin S.
Abstract:: Partial migration is a common migratory behavior where some individuals in a population migrate and others do not. Patterns of partial migration can vary dramatically, especially for species that inhabit a wide range of environments. I described and predicted spatial variation in marine migration (anadromy) of female Oncorhynchus mykiss (steelhead...
Resource Type:: Masters Thesis
Full Text:: Justin S. Mills for the degree of Master of Science in Fisheries Science presented on December 19, 2008

The status and life history traits of endemic, native and introduced species in Lake Lanao, Philippines

Creator:: Ismail, Gladys B.
Abstract:: The endemic cyprinids of Lake Lanao, Philippines have been described as a species flock and are thought to be an example of explosive evolution. However, based on historical surveys, 16 of the 18 cyprinid species endemic to Lake Lanao are now believed to be extinct. Furthermore, non-native species have been...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Gladys B

Stock Synthesis Assessments of Spatially Structured Fish Populations with an Environmental Driver on Recruitment Distribution : A Simulation Study and Discussion

Creator:: Denson, LaTreese S.
Abstract:: Stock assessments use statistical models and empirical data to re-create the population dynamics of a stock in order to provide estimates of biomass and fishing mortality rates to inform fisheries management. Fish stocks are not uniformly distributed across spatial regions, but stock assessments typically ignore stock spatial structure, for the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF LaTreese S. Denson

ScholarsArchive@OSU

Patterns of loggerhead turtle ontogenetic shifts revealed through isotopic analysis of annual skeletal growth increments

Elevational differences in UV-B response by the long-toed salamander (Ambystoma macrodactylum)

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Gene expression in the liver of rainbow trout, Oncorhynchus mykiss, during the stress response

Endocrine regulation of final oocyte maturation and sex differentiation in salmonids

The effects of environmental stressors on cardiac gene expression and contractility in rainbow trout (Oncorhynchus mykiss)

Endocrine mediation of reproduction in coho salmon (Oncorhynchus kisutch)

Description and prediction of broad-scale spatial variability in expression of anadromy in female Oncorhynchus mykiss in the John Day River, Oregon, USA

The status and life history traits of endemic, native and introduced species in Lake Lanao, Philippines

Stock Synthesis Assessments of Spatially Structured Fish Populations with an Environmental Driver on Recruitment Distribution : A Simulation Study and Discussion

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