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Publications

USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.

Filter Total Items: 2891

Individual and colony-specific wintering areas of Pacific northern fulmars (Fulmarus glacialis)

Seabird mortality associated with longline fishing in the eastern Bering Sea occurs mainly from September to May, with northern fulmars (Fulmarus glacialis) comprising the majority (60%) of the bycatch. Along the west coast of North America, winter dieoffs of fulmars may be increasing in frequency and magnitude, the most severe on record being a wreck that peaked in October-November 2003. We deplo
Authors
Scott A. Hatch, Verena A. Gill, Daniel M. Mulcahy

Cytochrome P4501A biomarker indication of oil exposure in harlequin ducks up to 20 years after the Exxon Valdez oil spill

Hydrocarbon-inducible cytochrome P4501A (CYP1A) expression was measured, as ethoxyresorufin-O-deethylase (EROD) activity, in livers of wintering harlequin ducks (Histrionicus histrionicus) captured in areas of Prince William Sound, Alaska, USA, oiled by the 1989 Exxon Valdez spill and in birds from nearby unoiled areas, during 2005 to 2009 (up to 20 years following the spill). The present work rep
Authors
Daniel Esler, Kimberly A. Trust, Brenda E. Ballachey, Samuel A. Iverson, Tyler L. Lewis, Daniel Rizzolo, Daniel M. Mulcahy, A. Keith Miles, Bruce R. Woodin, John J. Stegeman, John D. Henderson, Barry W. Wilson

Seabird databases and the new paradigm for scientific publication and attribution

For more than 300 years, the peer-reviewed journal article has been the principal medium for packaging and delivering scientific data. With new tools for managing digital data, a new paradigm is emerging—one that demands open and direct access to data and that enables and rewards a broad-based approach to scientific questions. Ground-breaking papers in the future will increasingly be those that cr
Authors
Scott A. Hatch

Sexually transmitted bacteria affect female cloacal assemblages in a wild bird

Sexual transmission is an important mode of disease propagation, yet its mechanisms remain largely unknown in wild populations. Birds comprise an important model for studying sexually transmitted microbes because their cloaca provides a potential for both gastrointestinal pathogens and endosymbionts to become incorporated into ejaculates. We experimentally demonstrate in a wild population of kitti
Authors
Joël White, Pascal Mirleau, Etienne Danchin, Hervé Mulard, Scott A. Hatch, Phillipp Heeb, Richard H. Wagner

Seabird bycatch in Alaska demersal longline fishery trials: a demographic summary

The seasonal and spatial demographics are summarized for seabirds killed incidentally during gear modification trials for a demersal longline fishery in the Bering Sea. We examined 417 carcasses, including Northern Fulmar Fulmarus glacialis (n = 205), Glaucous-winged Gull Larus glaucescens (n = 103), Short-tailed Shearwater Puffinus tenuirostris (n = 48), Glaucous Gull Larus hyperboreus (n = 23),
Authors
Elizabeth M. Phillips, HannahRose M. Nevins, Scott A. Hatch, Andrew M. Ramey, Melissa A. Miller, James T. Harvey

A likelihood framework for joint estimation of salmon abundance and migratory timing using telemetric mark-recapture

Many fisheries for Pacific salmon Oncorhynchus spp. are actively managed to meet escapement goal objectives. In fisheries where the demand for surplus production is high, an extensive assessment program is needed to achieve the opposing objectives of allowing adequate escapement and fully exploiting the available surplus. Knowledge of abundance is a critical element of such assessment programs. Ab
Authors
Jeffrey F. Bromaghin, Kenneth S. Gates, Douglas E. Palmer

Morbillivirus and Toxoplasma exposure and association with hematological parameters for southern Beaufort Sea polar bears: potential response to infectious agents in a sentinel species

Arctic temperatures are increasing in response to greenhouse gas forcing and polar bears have already responded to changing conditions. Declines in body stature and vital rates have been linked to warming-induced loss of sea-ice. As food webs change and human activities respond to a milder Arctic, exposure of polar bears and other arctic marine organisms to infectious agents may increase. Because
Authors
Cassandra M. Kirk, Steven C. Amstrup, Rhonda Swor, Darce Holcomb, Todd M. O'Hara

Intercontinental reassortment and genomic variation of low pathogenic avian influenza viruses isolated from northern pintails (Anas acuta) in Alaska: examining the evidence through space and time

Migration and population genetic data for northern pintails (Anas acuta) and phylogenetic analysis of low pathogenic avian influenza (LPAI) viruses from this host in Alaska suggest that northern pintails are involved in ongoing intercontinental transmission of avian influenza. Here, we further refine this conclusion through phylogenetic analyses which demonstrate that detection of foreign lineage
Authors
Andrew M. Ramey, John M. Pearce, Paul L. Flint, Hon S. Ip, Dirk V. Derksen, J. Christian Franson, Michael J. Petrula, Bradley D. Scotton, Kristine M. Sowl, Michael L. Wege, Kimberly A. Trust

[Book review] Anaesthetic and Sedative Techniques for Aquatic Animals, by L. G. Ross and B. Ross

Review of: L. G. Ross and B. Ross: Anaesthetic and sedative techniques for aquatic animals (Third Edition). Blackwell Publishing, Oxford, 2008, x + 222 pp, Hardback, ISBN-978-1-4051-4938-9.
Authors
Daniel M. Mulcahy

Satellite‐tracking of Northern Pintail Anas acuta during outbreaks of the H5N1 virus in Japan: Implications for virus spread

We fitted Northern Pintail Anas acuta in Japan with satellite transmitters and monitored their spring migration movements relative to locations where the highly pathogenic H5N1 avian influenza virus was detected in Whooper Swans Cygnus cygnus in 2008. Pintails were assumed not to be infected with the H5N1 virus at the time they were marked because capture occurred between 2 and 5 months before rep
Authors
Noriyuki Yamaguchi, Jerry W. Hupp, Hiroyoshi Higuchi, Paul L. Flint, John M. Pearce

Recent ecological divergence despite migration in sockeye salmon (Oncorhynchus nerka)

Ecological divergence may result when populations experience different selection regimes, but there is considerable discussion about the role of migration at the beginning stages of divergence before reproductive isolating mechanisms have evolved. However, detection of past migration is difficult in current populations and tools to differentiate genetic similarities due to migration versus recent
Authors
Scott A. Pavey, Jennifer L. Nielsen, Troy R. Hamon

Potential spread of highly pathogenic avian influenza H5N1 by wildfowl: dispersal ranges and rates determined from large-scale satellite telemetry

1. Migratory birds are major candidates for long-distance dispersal of zoonotic pathogens. In recent years, wildfowl have been suspected of contributing to the rapid geographic spread of the highly pathogenic avian influenza (HPAI) H5N1 virus. Experimental infection studies reveal that some wild ducks, geese and swans shed this virus asymptomatically and hence have the potential to spread it as th
Authors
Nicolas Gaidet, Julien Cappelle, John Y. Takekawa, Diann J. Prosser, Samuel A. Iverson, David C. Douglas, William M. Perry, Taej Mundkur, Scott H. Newman