Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 42765
Nonlethal laparoscopic detection of intersex (testicular oocytes) in largemouthbass (Micropterus salmoides) and smallmouth bass (Micropterus dolomieu) Nonlethal laparoscopic detection of intersex (testicular oocytes) in largemouthbass (Micropterus salmoides) and smallmouth bass (Micropterus dolomieu)
Intersex in wild fish populations has received considerable attention in the scientific literature and public media. Conventional detection of testicular oocytes (TO), the presence of immature oocytes within testis of male fish, employs transverse sectioning of excised testis and is lethal. This present study used a non-lethal laparoscopic technique to collect biopsies of testis from...
Authors
Vicki S. Blazer, Alexander H Macleod, Mark A Matsche, Lance T Yonkos
Detecting Renibacterium salmoninarum in wild brown trout by use of multiple organ samples and diagnostic methods Detecting Renibacterium salmoninarum in wild brown trout by use of multiple organ samples and diagnostic methods
Renibacterium salmoninarum, the causative agent of salmonid bacterial kidney disease (BKD), is endemic in many wild trout species in northerly regions. The aim of the present study was to determine the optimal R. salmoninarum sampling/testing strategy for wild brown trout (Salmo trutta L.) populations in Iceland. Fish were netted in a lake and multiple organs—kidney, spleen, gills...
Authors
S. Guomundsdottir, Lynn M. Applegate, I.O. Arnason, A. Kristmundsson, Maureen K. Purcell, Diane G. Elliott
The Wetland and Aquatic Research Center strategic science plan The Wetland and Aquatic Research Center strategic science plan
Introduction The U.S. Geological Survey (USGS) Wetland and Aquatic Research Center (WARC) has two primary locations (Gainesville, Florida, and Lafayette, Louisiana) and field stations throughout the southeastern United States and Caribbean. WARC’s roots are in U.S. Fish and Wildlife Service (USFWS) and National Park Service research units that were brought into the USGS as the Biological...
Authors
In situ assessment of lampricide toxicity to age-0 lake sturgeon In situ assessment of lampricide toxicity to age-0 lake sturgeon
The lampricides 3-trifluoromethyl-4-nitrophenol (TFM) and 2′, 5-dichloro-4′-nitrosalicylanilide (niclosamide) are used to control sea lamprey (Petromyzon marinus), an invasive species in the Great Lakes. Age-0 lake sturgeon (Acipenser fulvescens), a species of conservationconcern, share similar stream habitats with larval sea lampreys and these streams can be targeted for lampricide...
Authors
Lisa M. O’Connor, Thomas C. Pratt, Todd B. Steeves, Brian Stephens, Michael A. Boogaard, Cheryl Kaye
The Chief Joseph Hatchery Program 2014 Annual Report The Chief Joseph Hatchery Program 2014 Annual Report
The Chief Joseph Hatchery Program is comprised of both operations and maintenance of the Chief Joseph Hatchery, located near Bridgeport, Washington and the monitoring and evaluation of natural- and hatchery-origin Chinook salmon in the Okanogan Subbasin. In 2014, the Chief Joseph Hatchery released 44,267 yearling and 186,050 subyearling integrated Chinook from the Omak acclimation pond...
Authors
Andrea Pearl, Matthew Laramie, Casey Baldwin, John Rohrback, Pat Phillips
Merging paleobiology with conservation biology to guide the future of terrestrial ecosystems Merging paleobiology with conservation biology to guide the future of terrestrial ecosystems
The current impacts of humanity on nature are rapid and destructive, but species turnover and change have occurred throughout the history of life. Although there is much debate about the best approaches to take in conservation, ultimately, we need to permit or enhance the resilience of natural systems so that they can continue to adapt and function into the future. In a Review, Barnosky...
Authors
Anthony D. Barnosky, Elizabeth A. Hadly, Jason Head, Patrick Gonzalez, P. David Polly, A. Michelle Lawing, Jussi T. Eronen, David D. Ackerly, Ken Alex, Eric Biber, Jessica L. Blois, Justin Brashares, Gerardo Ceballos, Edward Davis, Gregory P. Dietl, Rodolfo Dirzo, Holly Doremus, Mikael Fortelius, Harry W. Greene, Jessica Hellmann, Thomas Hickler, Stephen T. Jackson, Melissa Kemp, Paul L. Koch, Claire Kremen, Emily L. Lindsey, Cindy Looy, Charles R. Marshall, Chase Mendenhall, Andreas Mulch, Alexis M. Mychajliw, Carsten Nowak, Uma Ramakrishnan, Jan Schnitzler, Kashish Das Shrestha, Katherine Solari, Lynn Stegner, M. Allison Stegner, Nils Chr. Stenseth, Marvalee H. Wake, Zhibin Zhang
Quarterly wildlife mortality report January 2017 Quarterly wildlife mortality report January 2017
No abstract available.
Authors
Bryan J. Richards, Daniel A. Grear, Anne Ballmann, Robert J. Dusek, Barbara Bodenstein
Evaluating simplistic methods to understand current distributions and forecast distribution changes under climate change scenarios: An example with coypu (Myocastor coypus) Evaluating simplistic methods to understand current distributions and forecast distribution changes under climate change scenarios: An example with coypu (Myocastor coypus)
Invasive species provide a unique opportunity to evaluate factors controlling biogeographic distributions; we can consider introduction success as an experiment testing suitability of environmental conditions. Predicting potential distributions of spreading species is not easy, and forecasting potential distributions with changing climate is even more difficult. Using the globally...
Authors
Catherine S. Jarnevich, Nicholas E. Young, Trevor R. Sheffels, Jacoby Carter, Mark D. Systma, Colin Talbert
Integration of genetic and demographic data to assess population risk in a continuously distributed species Integration of genetic and demographic data to assess population risk in a continuously distributed species
The identification and demographic assessment of biologically meaningful populations is fundamental to species’ ecology and management. Although genetic tools are used frequently to identify populations, studies often do not incorporate demographic data to understand their respective population trends. We used genetic data to define subpopulations in a continuously distributed species...
Authors
Bradley C. Fedy, Jeffery R. Row, Sara J. Oyler-McCance
A discrete stage-structured model of California newt population dynamics during a period of drought A discrete stage-structured model of California newt population dynamics during a period of drought
We introduce a mathematical model for studying the population dynamics under drought of the California newt (Taricha torosa), a species of special concern in the state of California. Since 2012, California has experienced a record-setting drought, and multiple studies predict drought conditions currently underway will persist and even increase in severity. Recent declines and local...
Authors
Marjorie T. Jones, William R. Milligan, Lee B. Kats, Thomas L. Vandergon, Rodney L. Honeycutt, Robert N. Fisher, Courtney L. Davis, Timothy A. Lucas
Inhibition of an aquatic rhabdovirus demonstrates promise of a broad-spectrum antiviral for use in aquaculture Inhibition of an aquatic rhabdovirus demonstrates promise of a broad-spectrum antiviral for use in aquaculture
Many enveloped viruses cause devastating disease in aquaculture, resulting in significant economic impact. LJ001 is a broad-spectrum antiviral compound that inhibits enveloped virus infections by specifically targeting phospholipids in the lipid bilayer via the production of singlet oxygen (1O2). This stabilizes positive curvature and decreases membrane fluidity, which inhibits virus...
Authors
Bethany F. Balmer, Rachel L. Powers, Ting-Hu Zhang, Jihye Lee, Frederic Vigant, Benhur Lee, Michael E. Jung, Maureen K. Purcell, Kevin Snekvik, Hector C. Aguilar
Identifying movement patterns and spawning areas of Lake Trout in Yellowstone Lake Identifying movement patterns and spawning areas of Lake Trout in Yellowstone Lake
No abstract available.
Authors
Robert E. Gresswell, Nicholas A. Heredia, Jason G. Romine, Lee F. G. Gutowsky, Phillip T. Sandstrom, Michael J. Parsley, Patricia E. Bigelow, C. D. Suski, Brian D. Ertel