News

Journal Reviews

Cluster Sampling Made Easy

WINNER: 2014 Best Paper, Transactions of the American Fisheries Society Cluster sampling is one of the most common survey designs used in fisheries research to sample fish populations. However, many researchers don’t take clustering into account when they are analyzing their data, largely due to lack of awareness. When the effect of clustering is ignored,... Read More

Postsmolt Growth More Important than Initial Growth at Sea

WINNER: 2014 Best Paper, Marine and Coastal Fisheries Over the last 20-30 years, the abundance of steelhead Oncorhynchus mykiss in the Keogh River, British Columbia, has declined substantially. Increased marine mortality has been cited as the main reason for this decline, with size at ocean entry appearing to be the main factor determining recruitment. However,... Read More

Experiments Reveal Cross-Class Transmission of Ranaviruses

By Jeff Schaeffer | AFS Co-Chief Science Editor. E-mail: jschaeffer@usgs.gov WINNER: 2014 Best Paper, Journal of Aquatic Animal Health Viruses are a source of mortality in lower vertebrates, and often threaten both cultured and wild populations. However, their epidemiology is not well understood, especially when it comes to the issue of infection reservoirs. Roberto Brenes... Read More

Phenology: One of the Least Known Consequences of Climate Change

By Jeff Schaeffer | AFS Co-Chief Science Editor. E-mail: jschaeffer@usgs.gov WINNER: 2014 Best Paper, North American Journal of Fisheries Management Phenology is the study of cyclic and seasonal natural phenomena, especially in relation to climate. Although everyone understands it intuitively (imagine looking for the first crocuses emerging from under the snow in your yard), it... Read More

A Novel Technique for Spawning Channel Catfish Based on New Understanding of Both Physiology and Genetics

By Jeff Schaeffer | AFS Co-Chief Science Editor. E-mail: jschaeffer@usgs.gov WINNER: 2014 Best Paper, North American Journal of Aquaculture As a practical matter, fish culturists often need to spawn fish artificially, and this is especially true of the catfish industry where hybrids of Blue Catfish Ictaluras furcatus and Channel Catfish Ictaluras punctatus are preferred for... Read More

Fisheries Classics: The Model That Turned Out to Be, Sadly, but Absolutely Right

By Jeff Schaeffer, AFS Co-Chief Science Editor The upper Laurentian Great Lakes were separated physically from the Atlantic coast by Niagara Falls, but constructed ship canals allowed marine invaders to penetrate the system. Invading Sea Lampreys Petromyzon marinus decimated native piscivores during the 1940s, which allowed Alewife Alosa pseudoharengus to proliferate to nuisance levels of... Read More

Your Favorite Microbrew May Support Fish Production

By Jeff Schaeffer | AFS Co-Chief Science Editor. E-mail: jschaeffer@usgs.gov Ethanol production has increased 13-fold from 2000 to 2013, and this has resulted in a concurrent increase in distillers dried grains (DDG), which are a byproduct of the fermentation process. While long used as feed for cattle, they have not been used widely in aquaculture... Read More

Assays Are Important but Not Simple to Create

By Jeff Schaeffer | AFS Co-Chief Science Editor. E-mail: jschaeffer@usgs.gov Fish culturists struggle constantly with preventing and treating disease, but one helpful trend is the development of assays that can provide rapid diagnostics so that disease presence can be verified or treated. Saranya Plaon and colleagues at the Srinakharinwirot University (Thailand) present a great look... Read More