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Polymorphic segregation in arctic charr Salvelinus alpinus (L.) from Lake Vatnshlidarvatn, northern Iceland

Creator:: Jonsson, Bjarni
Abstract:: I studied the occurrence of two sympatric morphs of arctic charr, Salvelinus alpinus (L.) in Vatnshlidarvatn, a small shallow lake in NW Iceland. The arctic charr were subjectively distinguished by colour and appearance as brown morph or silver morph, and measured for morphological and life history characters. The study revealed...
Resource Type:: Masters Thesis
Full Text:: Polymorphic segregation in arctic charr Salvelinus alpinus (L

Determination of marine migratory behavior and its relationship to selected physical traits for least cisco (Coregonus sardinella) of the western Arctic coastal plain, Alaska

Creator:: Seigle, John C.
Abstract:: With increased resource development on the western Arctic coastal plain of Alaska (especially within the oil extraction industry) it is important to understand the basic life history attributes of whitefish stocks in the region in order to ensure appropriate management. These fish are a crucial part of subsistence harvests for...
Resource Type:: Masters Thesis
Full Text:: ) of the Western Arctic Coastal Plain, Alaska. Abstract appjoved: / M. Jesse Ford With increased

Early maturing males in a partially migratory population of anadromous and resident rainbow trout Oncorhynchus mykiss: influences of individual condition and stream temperature

Creator:: McMillan, John R.
Abstract:: Alternative male phenotypes in salmonine fishes arise from individuals that mature as either larger and older anadromous marine-migrants or as smaller and younger freshwater residents. Variability in age and size of males at maturity is hypothesized to be preceded by early differences in growth in size and lipid storage. Water...
Resource Type:: Masters Thesis
Full Text:: (Arctic charr, Salvelinus alpinus: Rikardsen and Elliot 2000) on sympatric anadromous and resident

Use of Landscape Characteristics to Quantify Hybridization Risk Between Native and Introduced Salmonids

Creator:: Manning, Michael A.
Abstract:: The introduction of non-native species can negatively impact native species through reduced genetic fitness resulting from hybridization. The lack of spatiotemporal data of hybrids occurrences makes assessing hybridization risk difficult. Here, I developed a spatially-explicit GIS Hybridization Risk Model (HRM) between native ESA-listed Bull Trout and introduced Brook Trout by...
Resource Type:: Masters Thesis

Bioenergetic evaluation of diel vertical migration by bull trout

Creator:: Eckmann, Madeleine
Abstract:: I evaluated hypotheses related to growth as a driver of depth use and diel vertical migration by bull trout (Salvelinus confluentus) in a thermally stratified reservoir. I applied a bioenergetic model to evaluate growth of bull trout in relation to potential patterns of diel depth use by bull trout in...
Resource Type:: Masters Thesis
Full Text:: eggs (Pankhurst et al. 1996, King et al. 2003). Ovulation of Arctic char held in temperatures from 4

Effects of acute stress and exercise on subsequent seawater adaptation and cortisol dynamics in juvenile steelhead trout (Oncorhynchus mykiss)

Creator:: Liebert, Anja M.
Abstract:: The present study investigated the effects of stress and exercise on seawater (SW) adaptation and cortisol dynamics in juvenile steelhead (Oncorhynchus mykiss). To examine the effects of stress, fish acclimated to freshwater (FW) were subjected for 3 hours to confinement stress in FW, and subsequently SW (25 ppt) was introduced...
Resource Type:: Masters Thesis
Full Text:: concentrations as measurements for successful acclimation. Studies with Arctic charr (Salvelinus alpinus) showed

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

Creator:: Stone, Steven L.
Resource Type:: Masters Thesis

The influence of sex, migration distance, and latitude on expression of anadromy in Oncorhynchus mykiss

Creator:: Ohms, Haley
Abstract:: The evolution and maintenance of multiple phenotypes within populations is an interesting evolutionary and ecological question, and is becoming increasingly important for the restoration and conservation of partially migratory species. In particular, why individuals adopt a particular phenotype has been the focus of numerous research efforts. In the partially migratory...
Resource Type:: Masters Thesis
Full Text:: likely to be resident. Findstad and Hein (2012) found this to be true in populations of Arctic charr

Geographical and seasonal variation in diel habitat use by juvenile (age 1+) steelhead trout (Oncorhynchus mykiss) in Oregon coastal and inland streams

Creator:: Grunbaum, Jon Benjamin
Resource Type:: Masters Thesis
Full Text:: al., 1986; Cunjak, 1988a), brown trout (Salmo trutta) (Heggennes and Saltveit, 1990), and Arctic

Development and application of steelhead (Oncorhynchus mykiss) kelt identification techniques

Creator:: Evans, Allen F.
Abstract:: The migrations upstream of pre-spawned adult steelhead (Oncorhynchus mykiss) and downstream of post-spawned steelhead (referred to as "kelts") can geographically and temporally overlap in the Snake River, leading to management challenges for populations listed under the Endangered Species Act (ESA). This thesis describes the development and application of a method...
Resource Type:: Masters Thesis
Full Text:: . Lastly, reconditioning of iteroparous species has been achieved with arctic chan Salvelinus alp inus

ScholarsArchive@OSU

Polymorphic segregation in arctic charr Salvelinus alpinus (L.) from Lake Vatnshlidarvatn, northern Iceland

Determination of marine migratory behavior and its relationship to selected physical traits for least cisco (Coregonus sardinella) of the western Arctic coastal plain, Alaska

Early maturing males in a partially migratory population of anadromous and resident rainbow trout Oncorhynchus mykiss: influences of individual condition and stream temperature

Use of Landscape Characteristics to Quantify Hybridization Risk Between Native and Introduced Salmonids

Bioenergetic evaluation of diel vertical migration by bull trout

Effects of acute stress and exercise on subsequent seawater adaptation and cortisol dynamics in juvenile steelhead trout (Oncorhynchus mykiss)

Chemodetection of threatening chemical stimuli by juvenile coho salmon (Oncorhynchus kisutch)

The influence of sex, migration distance, and latitude on expression of anadromy in Oncorhynchus mykiss

Geographical and seasonal variation in diel habitat use by juvenile (age 1+) steelhead trout (Oncorhynchus mykiss) in Oregon coastal and inland streams

Development and application of steelhead (Oncorhynchus mykiss) kelt identification techniques

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