Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Creator Fogerty, R. Degree Field Fisheries Science

Distribution and life history of the spiny dogfish (Squalus acanthias) off the Oregon and Washington coasts

Creator:

Richards, Jaclyn M.

Abstract:

This study examines the spatial and temporal distribution and life history of the "offshore" component of the Northeastern Pacific spiny dogfish (Squalus acanthias) population. Distribution was examined in relation to latitude, depth, the Columbia River plume and large-scale climate changes. Fishery and survey data indicate that the Northeastern Pacific spiny...

Resource Type:

Masters Thesis

Full Text:

example of a global measure is Fisher's Malthusian parameter r (the instantaneous rate of increase). This
Mortality threshold for juvenile Chinook salmon (Oncorhynchus tshawytscha) in an epidemiological model of Ceratomyxa shasta

Creator:

Ray, R. Adam

Abstract:

The myxozoan parasite, Ceratomyxa shasta, is the most significant pathogen of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Klamath River, CA, USA. This parasite requires two hosts - a freshwater polychaete (Manayunkia speciosa) and a salmonid - to complete its life cycle. The complex life cycle and large geographic area...

Resource Type:

Masters Thesis

Full Text:

THESIS OF R. Adam Ray for the degree of Master of Science in Fisheries Science presented on November
Modeling abiotic influences on disease dynamics for the complex life cycle of the myxozoan parasite Ceratomyxa shasta

Creator:

Ray, Robert Adam

Abstract:

Most parasites and their hosts live in a balance within their environment; however a disease outbreak can occur when either the parasite, host, or environment, are perturbed. Myxozoan parasites are associated with a wide variety of cultured and wild fish populations. Most myxozoans are relatively benign to their vertebrate host;...

Resource Type:

Dissertation

Full Text:

Klamath River Chinook and coho salmon and compares disease severity across years. 15 R. Adam