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Species: Pacific Lamprey (Entosphenus tridentatus)

J indicates CRITFC employee.

June 30, 2017

Deep Ancestry of Programmed Genome Rearrangement in Lampreys

In most multicellular organisms, the structure and content of the genome is rigorously maintained over the course of development. However, some species have evolved genome biologies that permit, or require, developmentally regulated changes in the physical structure and content of the genome...

Vladmir Timoshevskiy, Ralph Lampman, Jon Hess, Laurie Porter, and Jeramiah Smith

May 4, 2017

Conservation Challenges and Research Needs for Pacific Lamprey in the Columbia River Basin

The Pacific Lamprey Entosphenus tridentatus, an anadromous fish native to the northern Pacific Ocean and bordering freshwater habitats, has recently experienced steep declines in abundance and range contractions along the West Coast of North America. During the early 1990s, Native American...

Benjamin Clemens, Richard Beamish, Kelly Coates, Margaret Docker, Jason Dunham, Ann Gray, Jon Hess, Jeffery Jolley, Ralph Lampman, Brian McIlraith, Mary Moser, Joshua Murauskas, David Noakes, Howard Schaller, Carl Schreck, Steven Starcevich, Bianca Streif, Stan van de Wetering, Joy Wade, Laurie Weitkamp, and Lance Wyss

June 1, 2017

Behavioral Responses of Pacific Lamprey to Alarm Cues

Pacific lamprey (Entosphenus tridentatus), an anadromous ectoparasite, faces several challenges during adult migration to spawning grounds. Developing methods to address these challenges is critical to the success of ongoing conservation efforts. The challenges are diverse, and include...

Laurie Porter, Michael Hayes, Aaron Jackson, Brian Burke, Mary Moser, and R. Steven Wagner

March 28, 2017

Sex Ratio and Maturation Characteristics of Adult Pacific Lamprey at Willamette Falls, Oregon

Returns of anadromous Pacific lamprey Entosphenus tridentatus to the Columbia River have declined dramatically, with hydrosystem development and passage barriers identified as major factors contributing to these declines. Concurrent with interagency efforts to address issues associated with...

Laurie Porter, Peter Galbreath, Brian McIlraith, and Jon Hess

January 25, 2017

Using Genetic Pedigree Reconstruction to Estimate Effective Spawner Abundance from Redd Surveys: An Example Involving Pacific Lamprey Entosphenus tridentatus

Redd surveys are a commonly used technique for indexing the abundance of sexually mature fish in streams; however substantial effort is often required to link redd counts to actual spawner abundance. In this study, we describe how genetic pedigree reconstruction can be used to estimate effective...

Steven Whitlock, Luke Schultz, Carl Schreck, and Jon Hess

October 12, 2016

Investigating Freshwater and Ocean Effects on Pacific Lamprey and Pacific Eulachon of the Columbia River Basin: Projections Within the Context of Climate Change

In this report we utilized statistical models and G.I.S-based approaches to analyze available life cycle, abundance and distribution data from the last 80 years on Pacific Lamprey (Entosphenus tridentatus) and Pacific Eulachon (Thaleichthys pacificus), and determine how climate change may...

Rishi Sharma, David Graves, Anthony Farrell, and Nate Mantua

August 15, 2015

Wy-Kan-Ush-Mi Wa-Kish-Wit: How Indigenous Knowledge Has Shaped Modern Fisheries Management in the Columbia River

The Columbia River Inter-Tribal Fish Commission (CRITFC) was formed in 1977 to provide a unified voice in Columbia River fisheries management for the Nez Perce, Yakama, Umatilla, and Warm Springs tribes. Following extremely low returns of salmon in the early 1990s and regional inaction to reverse...

Zachary Penney, Paul Lumley, and Aja DeCoteau

February 1, 2016

Genomics in Conservation: Case Studies and Bridging the Gap Between Data and Application

We agree with Shafer et al. [1] that there is a need for well-documented case studies of the application of genomics in conservation and management as well as increased communication between academics and natural resource managers. However, we challenge Shafer et al.’s [1]...

Brittany Garner, Brian Hand, Stephen Amish, Louis Bernatchez, Jeffrey Foster, Kristina Miller, Phillip Morin, Shawn Narum, Stephen O’Brien, Gretchen Roffler, William Templin, Paul Sunnucks, Jeffrey Strait, Kenneth Warheit, Todd Seamons, John Wenburg, Jeffrey Olsen, and Gordon Luikart

March 1, 2016

2014 Annual Report: Genetic Assessment of Columbia River Stocks

This project combines four inter-related studies from the Accords Agreement that address the following current and future objectives: i) discover and evaluate SNP markers in salmon and steelhead and other anadromous fishes, ii) expand and create genetic baselines for multiple species including...

Jon E. Hess, Nathan R. Campbell, Andrew P. Matala, Daniel J. Hasselman, and Shawn R. Narum

January 1, 2016

Chapter 21: Insights Gained Through Recent Technological Advancements for Conservation Genetics of Pacific Lamprey (Entosphenus tridentatus)

In the last decade there has been acceleration in genetic studies conducted on Pacific lamprey. Here we discuss ways in which recent technological advancements have opened new research avenues that were previously intractable. Although not an exhaustive review of recent studies and findings, I...

Jon Hess

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