Special Section: Hatcheries and Management of Aquatic Resources (HaMAR)

The American Fisheries Society (AFS) has routinely assessed the contributions of hatcheries to natural resource management, and issued recommendations to guide managers in the best uses of hatchery-origin fish. In response to changes in fisheries management policy, new information on supplementation and rehabilitation, and fisheries issues that had arisen, AFS undertook a new assessment in.. read more →

Climate Change Adaptation and Restoration of Western Trout Streams: Opportunities and Strategies

Climate Change Adaptation and Restoration of Western Trout Streams: Opportunities and Strategies Climate change is contributing to the severity and rate of stream degradation by changing the timing of peak flows, altering flow regimes, creating more frequent and intense disturbances, and increasing stream temperatures. Herein we describe three case studies of trout stream adaptation that.. read more →

Transactions Journal: A Sex-Determining Gene (sdY) Assay Shows Discordance between Phenotypic and Genotypic Sex in Wild Populations of Chinook Salmon

Abstract Sex is determined genetically in most fishes, but the gene responsible for sex determination is not known for the vast majority of fish species, including Chinook Salmon Oncorhynchus tshawytscha. The purpose of this study was to characterize a putative sex-determining gene (“sexually dimorphic on the Y-chromosome” [sdY] gene) in Chinook Salmon and develop a.. read more →

Transactions Abstract: Morphometric Contribution to the Detection of Introgressive Hybridization in the Endangered Owens Tui Chub in California

Abstract The Owens Tui Chub Siphateles bicolor snyderi has become endangered by introgressive hybridization with the Lahontan Tui Chub S. bicolor obesa since the 1960s. Adequate conservation strategies require prior identification of pure populations, which is usually difficult because the diagnostic features presented in the formal subspecies description do not always allow unequivocal determination of.. read more →

Transactions Book Review: A Review of “Regional Fisheries Oceanography of the California Current System: The CalCOFI Program”

Book Review Regional Fisheries Oceanography of the California Current System: The CalCOFI Program. By Sam McClatchie. Springer, New York. 2014. 235 pages. $189 (hardcover), $149 (e-book). This lovely book is aimed at graduate students in oceanography and researchers with special interests in both the California Current and how the California Current Cooperative Fisheries Investigation (CalCOFI).. read more →

• Transactions Abstract: Quantifying Avian Predation on Fish Populations: Integrating Predator-Specific Deposition Probabilities in Tag Recovery Studies

Abstract Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically reflect minimum estimates of predation due to an unknown.. read more →

• Transactions Abstract: Does Catch-and-Release Angling Alter the Behavior and Fate of Adult Atlantic Salmon During Upriver Migration?

Abstract To reproduce, Atlantic Salmon Salmo salar return to freshwater rivers and migrate upriver to spawning areas. This migration is the basis for recreational fisheries, which for conservation reasons are increasingly characterized by catchand-release angling. The effectiveness of catch and release for Atlantic Salmon conservation is contingent on the ability of individuals to recover from.. read more →

• Transactions Abstract: Reproductive Complexity in a Long-Lived Deepwater Fish, the Blackgill Rockfish

Abstract Fish populations are regulated by complex biological processes and ecosystem interactions. To inform stock assessments and management models, a clear understanding of a species’ reproductive biology is necessary, particularly in long-lived species, for which estimates of sustainable yield are sensitive to such parameters. Deviations from traditional views of iteroparity in marine fishes (e.g., prolonged.. read more →

Poniendo al lomo rojo de vuelta en el Lago Redfish, veinte años de progreso en el salvamento de la población de salmón más amenazada del noroeste

Fisheries Magazine 2014 – Aquaculture Themed Issue: Paul A. Kline and Thomas A. Flagg RESUMEN: En noviembre de 1991, el Servicio Nacional de Pesquerías Marinas de los Estados Unidos de Norteamérica, ingresó al salmón (Oncorhynchus nerka) en el Acta de Especies Amenazadas de los Estados Unidos (AEA) bajo la categoría de amenazado. Los últimos remanentes.. read more →

Respuesta de los Estados Unidos de Norteamérica a un reporte de virus de anemia infecciosa en salmones en el oeste de Norteamérica

Fisheries Magazine 2014 – Aquaculture Themed Issue: *Kevin H. Amos RESUMEN: Los manejadores de pesquerías a nivel federal, estatal y tribal así como también el público en general y sus representantes electos en los Estados Unidos de Norteamérica (EE.UU.) manifestaron su preocupación ante la sospecha de la presencia del virus de anemia infecciosa (VAIS) cuando por.. read more →

Dose-Dependent Effects of the Clinical Anesthetic Isoflurane on Octopus vulgaris: A Contribution to Cephalopod Welfare

A Journal of Aquatic Animal Health article (http://ow.ly/EpdI2) was recently cited in Science magazine’s “How to anesthetize an octopus” video at: news.sciencemag.org/plants-animals/2014/11/video-how-anesthetize-octopus. Taylor & Francis is providing free access to the full article until December 31, 2014. Abstract Recent progress in animal welfare legislation relating to invertebrates has provoked interest in methods for the anesthesia of cephalopods, for.. read more →

20 Nov 2014
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Fisheries Magazine – January 2015

In this Issue: JOURNAL SUMMARIES • Stocked Piscivores May Be Tougher Than We Thought by Jeff Schaeffer • Increasing Survival Rates of Discarded Red Snapper: Best Release Strategies by Sarah Harrison POLICY COLUMN • Culverts as Culprit and Conservation Choice Thomas E. Bigford ESSAYS AND FEATURES • Broadening the Regulated-River Management Paradigm: A Case Study of the Forgotten.. read more →

Use of Clove Oil and Eugenol to Anesthetize Fingerling Shabut Barbus grypus

Abstract In this study, the efficacy of four doses of clove oil and eugenol were compared to sedate fingerling ShabutBarbus grypus to various stages of sedation and recovery. The results from the present study indicated that effective concentrations were at 50 μL/L for eugenol (induction time: 58 ± 8 s; recovery time: 199 ± 15 s [mean ± SD]).. read more →

18 Oct 2014
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Influence of Habitat Characteristics on Shore-Spawning Kokanee

Influence of Habitat Characteristics on Shore-Spawning Kokanee by Steven L. Whitlock, Michael C. Quist and Andrew M. Dux Abstract Sockeye Salmon Oncorhynchus nerka and kokanee (lacustrine Sockeye Salmon) commonly spawn in both lentic and lotic environments; however, the habitat requirements of shore spawners are virtually unknown relative to those of stream spawners. A laboratory experiment and.. read more →

30 Sep 2014
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Fisheries Magazine

Highlights of Fisheries Magazine – October 2014 In this Issue: COLUMNS President’s Commentary AFS Communications for the Ages Donna Parrish Policy When Is Sublethal Deadly? Thomas E. Bigford Letter from the Executive Director Fish Have No Nationalities, But Harvest Does Doug Austen   FEATURES Opportunistic Acoustic Telemetry Platforms: Benefits of Collaboration in the Gulf of.. read more →

A New Beginning for South African Native Fish

In an article in this month’s Fisheries, an international collaboration between AFS and South African institutions resulted in South Africa’s first non-native fish eradication using rotenone in February 2012 in the Rondegat River, a small headwater stream in South Africa’s Cape Floristic Region (CFR) that had been invaded by Smallmouth Bass. The CFR is a.. read more →

TRANSACTIONS: Sexual Segregation of Spiny Dogfish

Sexual Segregation of Spiny Dogfish in Fishery-Dependent Surveys in Cape Cod, Massachusetts: Potential Management Benefits Abstract: Commercial gill-net and longline surveys were conducted in the Cape Cod, Massachusetts, area to assess whether the proportion of male Spiny Dogfish Squalus acanthias in the catch changes throughout a normal fishing day (an event frequently observed by local commercial longliners).. read more →

19 Jun 2014
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Fisheries Magazine – July 2014

Highlights of Fisheries Magazine – June 2014 In this Issue: Land Use Threats to Fish Meet Our New Emerging Leaders What Makes an Angler Volunteer? Urgent Recommendations for American Eel Interview: Editors of Foundations of Fisheries Science TO ACCESS FISHERIES: Either click here to go directly to Taylor and Francis OR Members click here and.. read more →

Boom and Bust in Lake Michigan

Lake Michigan’s balancing act Boom and bust: Nature is full of examples of what happens when the balance between predators and prey gets out of whack. But when that balance is between two nonnative species in the vastly altered ecosystem of the Great Lakes, puzzling patterns may emerge. In a recent paper in Transactions of.. read more →

David Bella—Plenary Speaker Abstract for the 144th AFS Annual Meeting

Systemic Distortion David Bella, Oregon State University, Corvallis I have been asked to succinctly convey some lessons involving two related problems not well addressed in your educations. First, distortion of information emerges on vast scales. Second, reductionism—reducing the character of wholes to the character of their parts—misperceives such distortions. Together, these two failures combine to.. read more →