منابع مشابه
How High Can Brook Trout Jump? A Laboratory Evaluation of Brook Trout Jumping Performance
—Quantitative data on how high brook trout Salvelinus fontinalis can jump are crucial for efforts by fisheries managers to exclude brook trout from streams containing native cutthroat trout Oncorhynchus clarkii subspp. and to build effective fishways for brook trout migration. We identified factors that could influence brook trout jumping ability and demonstrated how this knowledge could be app...
متن کاملMechanisms Limiting a Vertebrate Invasion: Brook Trout in Mountain Streams
I used multiple approaches to study brook trout invasions in mountainous streams of Idaho and Montana, USA. After studying marked fish in experimental reaches and fish distributions throughout a drainage, I concluded that larger brook trout (95mm) moved more than smaller ones and were probably responsible for most dispersal leading to invasion. Contrary to earlier hypotheses, poor swimming abil...
متن کاملObservations on the Etiology of Goitre in Brook Trout
The arrangement and number of the ponds and troughs, the water supply, the strain of brook trout, and their distribution in the ponds and troughs according to age, have remained unchanged since our first observations in 19o9. The crowding has gradually increased during these years, but the general external appearance of cleanliness of the ponds and troughs has not changed. Those containing the ...
متن کاملHydraulic Complexity Metrics for Evaluating In-Stream Brook Trout Habitat
A two-dimensional hydraulic model River2D was used to investigate the significance of flow complexity on habitat preferences of brook trout Salvelinus fontinalis) in the high-gradient Staunton River in Shenandoah National Park, Virginia. Two 100-m reaches were modeled where detailed brook trout surveys 10–30-m resolution have been conducted annually since 1997. Spatial hydraulic complexity metr...
متن کاملHeritability of Morphology in Brook Trout with Variable Life Histories
Distinct morphological variation is often associated with variation in life histories within and among populations of both plants and animals. In this study, we examined the heritability of morphology in three hatchery strains of brook trout (Salvelinus fontinalis), which were historically or are currently used for stocking and supplementation of both migratory and resident ecotypes in the uppe...
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ژورنال
عنوان ژورنال: Journal of Wildlife Diseases
سال: 1997
ISSN: 0090-3558
DOI: 10.7589/0090-3558-33.3.666