Results 151 to 160 of about 1,606 (176)
Some of the next articles are maybe not open access.
Variability in expression of anadromy by female Oncorhynchus mykiss within a river network
Environmental Biology of Fishes, 2011We described and predicted spatial varia- tion in marine migration (anadromy) of female Oncorhynchus mykiss in the John Day River water- shed, Oregon. We collected 149 juvenile O. mykiss across 72 sites and identified locations used by anadromous females by assigning maternal origin (anadromous versus non-anadromous) to each juve- nile.
Justin S. Mills +5 more
openaire +1 more source
Anadromy sustained in the artificially land-locked population of Sakhalin taimen in northern Japan
Environmental Biology of Fishes, 2019The conservation of land-locked populations of migratory fishes is increasingly important in the era of dam removal and habitat reconnection. We used an otolith strontium (Sr) tracer (87Sr/86Sr) to test the hypothesis that a land-locked population of an endangered salmonine species, Sakhalin taimen (Parahucho perryi), retains the capacity for anadromy,
Michio Fukushima +3 more
openaire +1 more source
Migrate or stay: terrestrial primary productivity and climate drive anadromy in Arctic char
Global Change Biology, 2012AbstractA shift in the magnitude and timing of animal migrations is one of the most documented ecological effects of climate change. Although migrations are largely driven by spatial variation in resource gradients, few studies connect expected changes in primary production with geographic patterns in migratory behavior.
Anders G. Finstad, Catherine L. Hein
openaire +1 more source
Journal of Fish Biology, 2020
AbstractAnadromy was documented in 16 lake trout, Salvelinus namaycush, from Canada's central Arctic using capture data and otolith microchemistry. For the first time, estuarine/marine habitat use was described for five individuals using acoustic telemetry. Age‐at‐first‐migration to sea was variable (10–39 years) among individuals and most S. namaycush
Les N. Harris +5 more
openaire +2 more sources
AbstractAnadromy was documented in 16 lake trout, Salvelinus namaycush, from Canada's central Arctic using capture data and otolith microchemistry. For the first time, estuarine/marine habitat use was described for five individuals using acoustic telemetry. Age‐at‐first‐migration to sea was variable (10–39 years) among individuals and most S. namaycush
Les N. Harris +5 more
openaire +2 more sources
Extent of Anadromy in Bull Trout and Implications for Conservation of a Threatened Species
North American Journal of Fisheries Management, 2005Abstract The use of radiotelemetry revealed that adult bull trout Salvelinus confluentus moved between freshwater and the Pacific Ocean and between watersheds along coastal Washington. Forty-seven of 82 radio-tagged bull trout implanted in the Hoh River and Kalaloch Creek basins were anadromous, and 23 fish were relocated in five ...
Samuel J. Brenkman, Stephen C. Corbett
openaire +1 more source
Example Four: Facultative Anadromy in Salmonid Fishes
2020This chapter offers a fourth example model, with the objective of (1) illustrating the application of state- and prediction-based theory (SPT) to a new kind of decision—a life history decision—in a case where dynamic state variable modeling (DSVM) has been applied successfully; and (2) describing the unique ability of models utilizing SPT to address ...
openaire +1 more source
Flexible modes of anadromy in Baltic sea trout: making the most of marginal spawning streams
Journal of Fish Biology, 2001From examination of the ratios of strontium to calcium laid down as a lifetime record in the otoliths of sea troutSalmo truttafrom Gotland, Baltic Sea, it was found that: (1) the shortest stream was used mostly by precociously emigrant or coastally hatched spawners; (2) longer streams had more fish that underwent normal smoltification; (3) sea‐caught ...
K. E. Limburg +4 more
openaire +2 more sources
Canadian Journal of Fisheries and Aquatic Sciences, 2014
Modeling and management of facultative anadromous salmonids is complicated by their ability to select anadromous or resident life histories. Conventional theory for this behavior assumes individuals select the strategy offering highest expected reproductive success but does not predict how population-level consequences such as a stream’s smolt ...
Steven F. Railsback +2 more
openaire +1 more source
Modeling and management of facultative anadromous salmonids is complicated by their ability to select anadromous or resident life histories. Conventional theory for this behavior assumes individuals select the strategy offering highest expected reproductive success but does not predict how population-level consequences such as a stream’s smolt ...
Steven F. Railsback +2 more
openaire +1 more source
Ecology, 2015
Across animal taxa, migration allows individuals to exploit habitats and resources that predictably vary seasonally in suitability. Theory predicts that the “decision” to migrate or not is shaped by the relative fitness costs and benefits of exhibiting a given life history.
Morgan H, Bond +2 more
openaire +2 more sources
Across animal taxa, migration allows individuals to exploit habitats and resources that predictably vary seasonally in suitability. Theory predicts that the “decision” to migrate or not is shaped by the relative fitness costs and benefits of exhibiting a given life history.
Morgan H, Bond +2 more
openaire +2 more sources
Anadromy and homing: two life‐history traits with adaptive synergies in salmonid fishes?
Fish and Fisheries, 2001Anadromy and homing are two traits found widely amongst teleost fishes. They co‐occur in salmonid fishes, and probably also in other fish families. Anadromy provides fish with the opportunity for more rapid growth, larger size, and higher fecundity through the exploitation of rich food resources and favourable growing temperatures in the sea, but may ...
openaire +1 more source