Filter Results

149 posts in Publications

Can variation in prey density drive changes in predatory selection in natural systems? For salmon and brown bears, yes

Curry J. Cunningham, Gregory T. Ruggerone, and Thomas P. Quinn
How does the availability of food affect the selectivity of the consumer? It has long been known that survival of prey can depend on their density, as predators become satiated or cannot catch them all. In addition, many studies have shown that predators are selective, tending to kill and consume some species or sizes of prey over others, but very few are examples of prey density driving patterns of selection by predators. 

Rank and order: evaluating the performance of SNPs for individual assignment in a non-model organism.

Related Articles

Rank and order: evaluating the performance of SNPs for individual assignment in a non-model organism.
PLoS One. 2012;7(11):e49018
Authors: Storer CG, Pascal CE, Roberts SB, Templin WD, Seeb LW, Seeb JE
Abstract
Single nucleotide polymorphisms (SNPs) are valuable tools for ecological and evolutionary studies. In non-model species, the use of SNPs has been limited by the number of markers available. 

Putative phage hyperparasite in the rickettsial pathogen of abalone, “Candidatus Xenohaliotis californiensis”.

Related Articles

Putative phage hyperparasite in the rickettsial pathogen of abalone, “Candidatus Xenohaliotis californiensis”.
Microb Ecol. 2012 Nov;64(4):1064-72
Authors: Friedman CS, Crosson LM
Abstract
Studies on the ecology of microbial parasites and their hosts are predicated on understanding the assemblage of and relationship among the species present. Changes in organismal morphology and physiology can have profound effects on host-parasite interactions and associated microbial community structure. 

Sensitivity of salmonid freshwater life history in Western US streams to future climate conditions.

Sensitivity of salmonid freshwater life history in Western US streams to future climate conditions.
Glob Chang Biol. 2013 May 2;
Authors: Beer WN, Anderson JJ
Abstract
We projected effects of mid-21(st) century climate on the early-life growth of Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss) in western United States streams. Air temperature and snowpack trends projected from climate models and observed 20(th) century trends were used to predict future seasonal stream temperatures. 

Evidence for an Amoeba-Like Infectious Stage of Ichthyophonus sp. and Description of a Circulating Blood Stage: A Probable Mechanism for Dispersal Within the Fish Host

Evidence for an Amoeba-Like Infectious Stage of Ichthyophonus sp. and Description of a Circulating Blood Stage: A Probable Mechanism for Dispersal Within the Fish Host
Author(s): Richard Kocan , Scott LaPatra , and Paul Hershberger
Source: Journal of Parasitology, 99(2):235-240. 2013.
Published By: American Society of Parasitologists
DOI: http://dx.doi.org/10.1645/GE-3255.1
URL: http://www.bioone.org/doi/full/10.1645/GE-3255.1
Abstract
Small amoeboid cells, believed to be the infectious stage of Ichthyophonus sp., were observed in the bolus (stomach contents) and tunica propria (stomach wall) of Pacific staghorn sculpins and rainbow trout shortly after they ingested Ichthyophonus sp.–infected tissues. 

Ocean and dam influences on salmon survival.

Ocean and dam influences on salmon survival.
Proc Natl Acad Sci U S A. 2013 Apr 9;
Authors: Hilborn R
Abstract
PMID: 23572587 [PubMed – as supplied by publisher]
via pubmed: school of aquatic an… http://www.ncbi.nlm.nih.gov/pubmed/23572587?dopt=Abstract 

Opportunistic exploitation: an overlooked pathway to extinction.

Opportunistic exploitation: an overlooked pathway to extinction.
Trends Ecol Evol. 2013 Apr 4;
Authors: Branch TA, Lobo AS, Purcell SW
Abstract
How can species be exploited economically to extinction? Past single-species hypotheses examining the economic plausibility of exploiting rare species have argued that the escalating value of rarity allows extinction to be profitable. We describe an alternative pathway toward extinction in multispecies exploitation systems, termed ‘opportunistic exploitation’. 

Riding the crimson tide: mobile terrestrial consumers track phenological variation in spawning of an anadromous fish.

Riding the crimson tide: mobile terrestrial consumers track phenological variation in spawning of an anadromous fish.
Biol Lett. 2013;9(3):20130048
Authors: Schindler DE, Armstrong JB, Bentley KT, Jankowski K, Lisi PJ, Payne LX
Abstract
When resources are spatially and temporally variable, consumers can increase their foraging success by moving to track ephemeral feeding opportunities as these shift across the landscape; the best examples derive from herbivore-plant systems, where grazers migrate to capitalize on the seasonal waves of vegetation growth. 

Addressing assumptions: variation in stable isotopes and fatty acids of marine macrophytes can confound conclusions of food web studies

MN Dethier, *EA Sosik, *AWE Galloway, DO Duggins, *CA Simenstad. 2013. Feature Article, open access. Marine Ecology Progress Series 478:1-14.
http://www.int-res.com/abstracts/meps/v478/
*Authors from SAFS
Research on food webs increasingly relies on sampling biomarkers (stable isotopes and fatty acids) in consumers and their potential prey. In studies of macroalgal and seagrass biomarkers in the northeast Pacific, Dethier and coworkers found substantial variation in biomarkers across dates and sites. 

Back to Top