Results 51 to 60 of about 8,645 (277)

Remnant salmon life history diversity rediscovered in a highly compressed habitat

Evolutionary Applications
Chinook salmon (Oncorhynchus tshawytscha) display remarkable life history diversity, underpinning their ability to adapt to environmental change.
Sara A. Hugentobler, Anna M. Sturrock, Malte Willmes, Tasha Q. Thompson, Rachel C. Johnson, Flora Cordoleani, Natalie J. Stauffer‐Olsen, George Whitman, Mariah H. Meek   +8 more
doaj   +1 more source

Warming Ocean Conditions Relate to Increased Trophic Requirements of Threatened and Endangered Salmon.

PLoS ONE, 2015
The trophic habits, size and condition of yearling Chinook salmon (Oncorhynchus tshawytscha) caught early in their marine residence were examined during 19 survey years (1981-1985; 1998-2011). Juvenile salmon consumed distinct highly piscivorous diets in
Elizabeth A Daly, Richard D Brodeur
doaj   +1 more source

Contemporary Methods for Capturing Juvenile Salmonids in the Marine Environment

Fish and Fisheries, EarlyView.
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

Demographic changes in Chinook salmon across the Northeast Pacific Ocean

, 2018
The demographic structure of populations is affected by life history strategies and how these interact with natural and anthropogenic factors such as exploitation, climate change, and biotic interactions. Previous work suggests that the mean size and age
J. Ohlberger, E. Ward, D. Schindler, B. Lewis   +3 more
semanticscholar   +1 more source

Are salmon-derived nutrients being incorporated in food webs of invaded streams? Evidence from southern Chile

Knowledge and Management of Aquatic Ecosystems, 2012
Using stable isotope analyses of N and C we present preliminary evidence of marine-derived nutrients from introduced Chinook salmon (Oncorhynchus tshawytscha Walbaum) in stream food webs of Laguna Los Patos, NW Patagonia.
Arismendi I., Soto D.
doaj   +1 more source

Transgenerational Marking of Chinook Salmon Otoliths

, 2023
Various tagging methods are currently applied in fisheries science for monitoring and managing fish populations worldwide. Tagging technology can often be limited by characteristics of the target species and can come with side effects such as lowering individual fitness.
openaire   +2 more sources

A Conceptual Framework and Methods for Studying the Connectivity of Fishes

Fish and Fisheries, EarlyView.
ABSTRACT Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic ...
Jordanna N. Bergman, Jessica A. Robichaud, Jasper McCutcheon, Michael T. Booth, Brendan Campbell, Grace A. Casselberry, Cienna R. Cooper, Bronwyn M. Gillanders, Lucas P. Griffin, Edward Hale, Luc LaRochelle, Karen J. Murchie, Mary Peacock, Reid G. Swanson, Simon D. Stewart, Ryan. J. Woodland, Daniel P. Zielinski, Steven J. Cooke, Morgan L. Piczak   +18 more
wiley   +1 more source

Visual Modelling to Predict Behavioural Responses of Catsharks, Skates, and Plaice to Artificial Light for Use in Bycatch Reduction

Fisheries Management and Ecology, EarlyView.
ABSTRACT Light can be used to deter bycatch from fishing nets, but few studies have aimed to quantify how species view and respond to light. Here, we used visual models to predict how target (plaice Pleuronectes platessa) and bycatch (small‐spotted catshark Scyliorhinus canicular and undersized skates, Raja spp) species, captured in mixed demersal ...
Jasmine Somerville, Jon Blount, Martin Stevens   +2 more
wiley   +1 more source

Survival of the fattest: linking body condition to prey availability and survivorship of killer whales

Ecosphere, 2021
Recovering small, endangered populations is challenging, especially if the drivers of declines are not well understood. While infrequent births and deaths may be important to the outlook of endangered populations, small sample sizes confound studies ...
Joshua D. Stewart, John W. Durban, Holly Fearnbach, Lance G. Barrett‐Lennard, Paige K. Casler, Eric J. Ward, Derek R. Dapp   +6 more
doaj   +1 more source

Evaluating and Advancing the Use of Shore‐Based Observers for Scientific Sampling and Catch Verification in High‐Volume Fisheries

Fisheries Management and Ecology, EarlyView.
ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens, Andy Kingham, Jason E. Jannot   +2 more
wiley   +1 more source