Spatial Segregation of Spawning Habitat Limits Hybridization between Sympatric Native Steelhead and Coastal Cutthroat Trout
T. W. Buehrens, J. Glasgow, C. O. Ostberg, T. P. Quinn
Native Coastal Cutthroat Trout Oncorhynchus clarkii clarkii and Coastal Steelhead O. mykiss irideus hybridize naturally in watersheds of the Pacific Northwest yet maintain species integrity. Partial reproductive isolation due to
differences in spawning habitat may limit hybridization between these species, but this process is poorly understood.
Dispersal and tributary immigration by juvenile coho salmon contribute to spatial expansion during colonisation
Joseph H. Anderson, George R. Pess, Peter M. Kiffney, Todd R. Bennett, Paul L. Faulds, William I. Atlas*, Thomas P. Quinn
Accepted for publication July 12, 2012
Anadromous fishes are frequently restricted by artificial barriers to movement such as dams and culverts, so measuring dispersal helps identify sites where improved connectivity could promote range expansion and population viability.
Summer emigration and resource acquisition within a shared nursery lake by sockeye salmon (Oncorhynchus nerka) from historically discrete rearing environments
R.K. Simmons,* T.P. Quinn, L.W. Seeb, D.E. Schindler, and R. Hilborn. School of Aquatic and Fishery Sciences, Box 355020, University of Washington, Seattle, WA 98195, USA.
Many fish species disperse broadly during juvenile life history stages. While this may enable persistence in variable environments, it may also produce novel competitive interactions in recipient habitats that contain conspecifics from other populations.
Resource polymorphism and diversity of Arctic charr
Salvelinus alpinus in a series of isolated lakes
P. J. Woods*†‡§, D. Young, S. Sk´ ulason*, S. S. Snorrason†
and T. P. Quinn‡
*H´olar University College, H´aeyri 1, 551 Sauð´arkr´okur, Iceland, †University of Iceland, Sturlugata 7, Askja, 101 Reykjavík, Iceland, ‡University of Washington, Box 355020, Seattle, Washington 98195, U.S.A. and National Park Service, Lake Clark National Park and Preserve, Port Alsworth, AK 99653, U.S.A.
Larson, W. A., F. M. Utter, K. W. Myers, W. D. Templin, J. E. Seeb, C. M. Guthrie, A. V. Bugaev, and L. W. Seeb. 2013. Single-nucleotide polymorphisms reveal distribution and migration of Chinook salmon (Oncorhynchus tshawytscha) in the Bering Sea and North Pacific Ocean Canadian Journal of Fisheries and Aquatic Sciences 70:128-141.
We genotyped Chinook salmon (Oncorhynchus tshawytscha) from the Bering Sea and North Pacific Ocean for 43 singlenucleotide polymorphisms (SNPs) to investigate seasonal distribution and migration patterns.
Relationship between effective population size, inbreeding and adult fitness-related traits in a steelhead (Oncorhynchus mykiss) population released in the wild.
Mol Ecol. 2013 Feb 4;
Authors: Naish KA, Seamons TR, Dauer MB, Hauser L, Quinn TP
Inbreeding is of concern in supportive breeding programmes in Pacific salmonids, Oncorhynchus spp, where the number of breeding adults is limited by rearing space or poor survival to adulthood, and large numbers are released to supplement wild stocks and fisheries.
Identifying Preservation and Restoration Priority Areas for Desert Fishes in an Increasingly Invaded World.
Environ Manage. 2013 Jan 26;
Authors: Pool TK, Strecker AL, Olden JD
A commonly overlooked aspect of conservation planning assessments is that wildlife managers are increasingly focused on habitats that contain non-native species. We examine this management challenge in the Gila River basin (150,730 km(2)), and present a new planning strategy for fish conservation.
Motion-guided attention promotes adaptive communications during social navigation.
Proc Biol Sci. 2013;280(1754):20122003
Authors: Lemasson BH, Anderson JJ, Goodwin RA
Animals are capable of enhanced decision making through cooperation, whereby accurate decisions can occur quickly through decentralized consensus. These interactions often depend upon reliable social cues, which can result in highly coordinated activities in uncertain environments. Yet information within a crowd may be lost in translation, generating confusion and enhancing individual risk.
Centennial-scale fluctuations and regional complexity characterize Pacific salmon population dynamics over the past five centuries.
Proc Natl Acad Sci U S A. 2013 Jan 15;
Authors: Rogers LA, Schindler DE, Lisi PJ, Holtgrieve GW, Leavitt PR, Bunting L, Finney BP, Selbie DT, Chen G, Gregory-Eaves I, Lisac MJ, Walsh PB
Observational data from the past century have highlighted the importance of interdecadal modes of variability in fish population dynamics, but how these patterns of variation fit into a broader temporal and spatial context remains largely unknown.
Frequency and intensity of productivity regime shifts in marine fish stocks.
Proc Natl Acad Sci U S A. 2013 Jan 15;
Authors: Vert-Pre KA, Amoroso RO, Jensen OP, Hilborn R
Fish stocks fluctuate both in abundance and productivity (net population increase), and there are many examples demonstrating that productivity increased or decreased due to changes in abundance caused by fishing and, alternatively, where productivity shifted between low and high regimes, entirely unrelated to abundance.