Results 61 to 70 of about 44,758 (248)

Optimizing Selection of Brown Bear Hair for Noninvasive Genetic Analysis

Wildlife Society Bulletin, 2020
Many wildlife studies use noninvasive survey methods such as barbed wire to obtain hair samples for DNA analysis. If laboratory costs preclude processing all samples, it may be important to know a priori which samples are most likely to yield useful DNA.
Aaron J. Wirsing, Thomas P. Quinn, Jennifer R. Adams, Lisette P. Waits   +3 more
doaj   +1 more source

Consequences of a sockeye salmon shortage for the brown bear in the basin of Lake Kurilskoe, Southern Kamchatka

Nature Conservation Research: Заповедная наука, 2021
We studied the behavioural ecology of Ursus arctos (hereinafter – brown bear or bear) in the basin of Lake Kurilskoe (Kamchatka Peninsula) in the summer and autumn of 2017–2018. The aim of this study was a comparative assessment of the behaviour of brown
Sergey A. Kolchin, Eugenia V. Volkova, Liya V. Pokrovskaya, Anna V. Zavadskaya   +3 more
doaj   +1 more source

Northerly Distribution of White Sharks, Carcharodon carcharias, in the Eastern Pacific and Relation to ENSO Events [PDF]

, 2004
Twenty-nine verified records of white sharks, Carcharodon carcharias, from British Columbia and Alaska waters (1961–2004) are presented. Record locations ranged from lat. 48°48ʹN to lat.
Martin, R. Aidan
core  

Climate vulnerability assessment for Pacific salmon and steelhead in the California Current Large Marine Ecosystem. [PDF]

, 2019
Major ecological realignments are already occurring in response to climate change. To be successful, conservation strategies now need to account for geographical patterns in traits sensitive to climate change, as well as climate threats to species-level ...
Beechie, Tim, Bograd, Steven J, Boughton, David A, Carr, Mark, Cooney, Thomas D, Crozier, Lisa G, Dunham, Jason B, Greene, Correigh M, Haltuch, Melissa A, Hazen, Elliott L, Holzer, Damon M, Huff, David D, Johnson, Rachel C, Jordan, Chris E, Kaplan, Isaac C, Lindley, Steven T, Mantua, Nathan J, McClure, Michelle M, Moyle, Peter B, Myers, James M, Nelson, Mark W, Spence, Brian C, Weitkamp, Laurie A, Williams, Thomas H, Willis-Norton, Ellen   +24 more
core   +1 more source

Contemporary Methods for Capturing Juvenile Salmonids in the Marine Environment

Fish and Fisheries, Volume 27, Issue 2, Page 160-178, March 2026.
ABSTRACT Anadromous salmonids play vital roles in marine and freshwater ecosystems. The most abundant of these fishes—Pacific salmon (Oncorhynchus spp.)—are integral to coastal ecosystems and communities across the North Pacific Rim, but numerous populations are experiencing dramatic declines, particularly towards the south of their range.
Sean C. Godwin, Emma M. Atkinson, Jamieson B. Atkinson, Mackenzie C. Bartlett, William D. P. Duguid, Marc Trudel, Andrew W. Bateman   +6 more
wiley   +1 more source

Interaction between watershed features and climate forcing affects habitat profitability for juvenile salmon

Ecosphere, 2020
Opportunities for growth and survival of aquatic organisms are spatially and temporally variable as habitat conditions across watersheds respond to interacting climatic, geomorphic, and hydrologic conditions.
Timothy E. Walsworth, Jeffrey R. Baldock, Christian E. Zimmerman, Daniel E. Schindler   +3 more
doaj   +1 more source

Salmon Skin Acid-Soluble Collagen Produced by A Simplified Recovery Process: Yield, Compositions, and Molecular Characteristics

Fishes, 2022
Acid-soluble collagen (ASC) is generally extracted by acid solubilization, followed by precipitation and dialysis. Such a process is typically time consuming and tedious, especially for dialysis.
Krisana Nilsuwan, Umesh Patil, Chuanhai Tu, Bin Zhang, Soottawat Benjakul   +4 more
doaj   +1 more source

Determination of population structure and stock composition of chum salmon (Oncorhynchus keta) in Russia determined with microsatellites [PDF]

, 2008
Variation at 14 microsatellite loci was examined in 34 chum salmon (Oncorhynchus keta) populations from Russia and evaluated for its use in the determination of population structure and stock composition in simulated mixed-stock fishery samples.
Beacham, Terry D., Le, Khai D., Varnavskaya, Nataly V., Wetklo, Michael H.   +3 more
core  

Brown Bear Consumption of Pacific Salmon Varies Greatly Among Individuals but Increases With the Bear's Age and Salmon Availability

Ecology and Evolution, Volume 16, Issue 2, February 2026.
Hair was sampled in a noninvasive manner from free‐living brown bears in Alaska and processed for genetic identification and stable isotopes. These data revealed great individual variation in bear reliance on salmon, despite being sampled along streams full of salmon.
Thomas P. Quinn, Jennifer H. Stern, N. Grace Henry, Annika K. McFeely, HyeJoo Ro, Blaise Stricker, Liz Voytas, Lisette P. Waits, Jennifer R. Adams, Aaron J. Wirsing   +9 more
wiley   +1 more source

Swimming performance of the freshwater neotropical fish: Pimelodus maculatus Lacepède, 1803

Brazilian Journal of Biology
The present study used fixed and increasing velocity tests in an experimental apparatus based on Brett's respirometer to examine prolonged and sustained speeds of the "mandi-amarelo", Pimelodus maculatus.
HA. Santos, PS. Pompeu, GS. Vicentini, CB. Martinez   +3 more
doaj   +1 more source