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Size-Structured Spatial Patterns As A Measure Of Larval Dispersal And Emigration, Douglas F. Markle

Western North American Naturalist

Size-structured spatial patterns in larvae of 2 sucker and 3 minnow species are described from fixed-site sampling in Upper Klamath Lake, Oregon, and are used to demonstrate patterns of size-based losses downstream and retention in the lake. The smallest larvae of shortnose suckers (Chasmistes brevirostris), Lost River suckers (Deltistes luxatus), and tui chubs (Siphateles bicolor) were least likely to be found in Lake Ewauna, a downstream catchment; yet the proportion of larger larvae downstream was often substantial, 20%–40% of a size class. In contrast, the smallest larvae of blue chubs (Klamathella coerulea) …

Larval Sucker Distribution And Condition Before And After Large-Scale Restoration At The Williamson River Delta, Upper Klamath Lake, Oregon, Charles S. Erdman, Heather A. Hendrixson, Nathan T. Rudd

Western North American Naturalist

We monitored the response of endangered Lost River sucker (Deltistes luxatus) larvae and shortnose sucker (Chasmistes brevirostris) larvae prior to, and during the first 2 seasons after, restoration of historic wetlands at the mouth of the Williamson River, Upper Klamath Lake, Oregon. In 2006 and 2007 (prerestoration) and in 2009 and 2010 (postrestoration), we used pop nets set in shallow-water (t = 9.92, df = 400, P < 0.0001; t = 0.8, df = 400, P = 0.3438). In 2009 and 2010, larvae were documented using the newly restored portions of the delta. Larval suckers captured during pre- …

Evaluation Of Release Strategies For Captive-Reared June Sucker Based On Poststocking Survival, Eric J. Billman, Josh E. Rasmussen, Jackie Watson

Western North American Naturalist

The recovery program for the endangered June sucker (Chasmistes liorus) relies on population augmentation to overcome recruitment deficits. Successful recruitment of artificially propagated individuals is affected by release timing, release size, and rearing techniques. We examined the effect of release timing and release size (total length [TL] and a relative condition factor [W_r]) on recruitment probability of hatchery-reared June sucker (Utah Division of Wildlife Resources Fisheries Experiment Station [FES]) and captive-reared June sucker (Red Butte Reservoir [RBR] refuge population) stocked across multiple years. Because source and year effects were confounded, we assessed the probability of recruitment …

Effect Of Density On Growth And Survival Of Young June Sucker, Mark C. Belk, R. Cary Tuckfield

Western North American Naturalist

One of the fundamental determinants of survival and growth of individuals is population density. Typically, individuals exhibit negative density dependence, but positive density dependence (Allee effect) may occur. Understanding patterns of density dependence is important for conservation and management of species that have low densities as a result of recent population declines. June sucker (Chasmistes liorus) is an endangered species that was formerly abundant but now is found at low densities in Utah Lake. We tested the hypothesis that young June sucker exhibit positive density dependence (i.e., Allee effects) in growth and survival at low densities. In addition, …

Ecology Of Unique Lentic Populations Of Roundtail Chub, Gila Robusta, Sarah M. Laske, Frank J. Rahel, Wayne A. Hubert, Peter A. Cavalli

Western North American Naturalist

Although roundtail chub (Gila robusta) is generally considered a riverine species, 6 natural lakes in the upper Green River basin, Wyoming, have resident populations of this fish. In 2 of the lakes, Halfmoon and Little Halfmoon, we investigated the ecology of resident roundtail chub, including their habitat use, diet, weight–length relationships, growth, and reproduction. Lentic roundtail chub used littoral and mid-depth benthic habitats most often, with the highest catch rates in littoral habitats. Roundtail chub were rarely caught in pelagic or deep benthic habitats. Opportunistic foraging was observed in both lakes, with roundtail chub consuming terrestrial and aquatic …

Consequences Of Parasitic Mite Infestation On Muskrat (Ondatra Zibethicus), Jeffrey A. Prendergast, William E. Jensen

Western North American Naturalist

Ectoparasite infestation has been implicated in increased physiological costs and reduced fitness of several animals. The semiaquatic habit of muskrat (Ondatra zibethicus) restricts its ectoparasites to small mites. We assessed variation in muskrat reproductive effort and fat content in response to relative abundance of parasitic mites. There were no significant correlations between total number of placental scars, number of litters, or percent body fat and the relative abundance of ectoparasitic mites. Our results suggest that these measures of muskrat reproduction and physiology are generally unaffected by arachnid ectoparasites.


La infestación de ectoparásitos ha sido vinculada con el aumento …

Comparison Of Disturbance Impacts To And Spatial Distribution Of Biological Soil Crusts In The Little San Bernardino Mountains Of Joshua Tree National Park, California, Nicole Pietrasiak, Jeffrey R. Johansen, Tasha Ladoux, Robert C. Graham

Western North American Naturalist

Biological soil crust ecology in the hot Mojave Desert is poorly understood with regard to crust distribution and abundance, as well as the impacts of trampling disturbance on crust development. Our objective was to study biological soil crusts in 2 areas of differing disturbance pressures in the high desert region of Joshua Tree National Park, California, with respect to visible crust cover and frequency, chlorophylla, and soil stability. Impacts on biological soil crusts from 2 disturbance regimes, historic grazing and recent high foot traffic, were compared using a disturbance indicator. In addition, we measured a suite of abiotic and …

Characterization And Isolation Of Five Microsatellite Loci In Northern Flying Squirrels, Glaucomys Sabrinus (Sciuridae, Rodentia), A. M. Kiesow, L. E. Wallace, H. B. Britten

Western North American Naturalist

Northern flying squirrels (Glaucomys sabrinus) are found in boreal forests of northern and northwestern North America, but a small population is isolated to the Black Hills of South Dakota and Wyoming. Few microsatellite primers have been developed for this species, though they are needed to examine the genetic structure of these populations. Thus, we isolated and characterized 5 microsatellite loci in northern flying squirrels through a series of steps involving microbiology, molecular biology, and genetic techniques. Data analyses with these primers indicated that the northern flying squirrel population found in the Black Hills may have low heterozygosity and …

Macrolichens Of The Pacific Northwest By Bruce Mccune And Linda Geiser, Thor Hanson

Western North American Naturalist

No abstract provided.

Front Matter, Vol. 71 No. 4

Western North American Naturalist

No abstract provided.

End Matter, Vol. 71 No. 4

Western North American Naturalist

No abstract provided.

Protocol For A Randomized Controlled Trial Of A Specialized Health Coaching Intervention To Prevent Excessive Gestational Weight Gain And Postpartum Weight Retention In Women: The Hipp Study., Helen Skouteris, Marita Mccabe, Jeannette Milgrom, Bridie Kent, Lauren J. Bruce, Cathrine Mihalopoulos, Sharon J. Herring, Malcolm Barnett, Denise Patterson, Glyn Teale, Janette Gale

School of Nursing and Midwifery

BACKGROUND: Pregnancy is a time of significant physiological and physical change for women. In particular, it is a time at which many women are at risk of gaining excessive weight. We describe the rationale and methods of the Health in Pregnancy and Post-birth (HIPP) Study, a study which aims primarily to determine the effectiveness of a specialized health coaching (HC) intervention during pregnancy, compared to education alone, in preventing excessive gestational weight gain and postpartum weight retention 12 months post birth. A secondary aim of this study is to evaluate the mechanisms by which our HC intervention impacts on weight …

Mind Games: Big South Quiz Bowl Set For Jan. 28, Winthrop University

Winthrop News 2012

• The competition will get underway at 9 a.m. as each college team will face each other during the seven rounds held in Owens Hall.
• Competing are Winthrop, Gardner-Webb, Radford, Liberty, Coastal Carolina, Virginia Military Institute and UNC Asheville.

Lake Suckers In The Western Usa: History, Ecology, And Bibliography Of An Endangered Genus, Mark C. Belk, Russell B. Rader, Michael D. Mills

Western North American Naturalist

Lake suckers of the genus Chasmistes are a unique and important component of the fish assemblages of the western USA. To review recent research, discuss issues, and exchange information, researchers and managers working on the various species participated in a symposium on lake sucker biology as part of the 2010 annual meeting of the Western Division of the American Fisheries Society, held in Salt Lake City, Utah. This special feature of the Western North American Naturalist is dedicated to lake sucker ecology and natural history and provides a central venue for publication of several papers presented in the symposium. To …

Growth Of Young June Sucker (Chasmistes Liorus) Is Associated With Zooplankton Density In Utah Lake, Joshua D. Kreitzer, Eric J. Billman, Mark C. Belk, Russell B. Rader

Western North American Naturalist

The endangered June sucker, Chasmistes liorus, is a long-lived, zooplanktivorous sucker endemic to Utah Lake, Utah. Habitat degradation both in the tributaries, where adults spawn, and in the lake has contributed to near complete mortality of larval and juvenile fish within the first few weeks after hatching, leading to a long-term lack of recruitment to the adult population. Recovery of June sucker depends on habitat restoration in the river and the lake that will increase the survival of young fish. Thus, it is important to understand how habitat heterogeneity within the lake will influence the survival and growth of young …

Specialist And Generalist Bee Visitors Of An Endemic Beardtongue (Penstemon Caryi: Plantaginaceae) Of The Big Horn Mountains, Wyoming, V. J. Tepedino, T. L. Griswold, J. E. Freilich, P. Shephard

Western North American Naturalist

Insect exclusion from the flowers of Penstemon caryi showed that fruits are not produced unless pollen is moved between flowers by pollinators. We recorded over 30 species of bees visiting the flowers, and about a third of the bee species were common. Flower visitors were primarily pollen-collecting female bees, most of which also carried pollen on areas of the head that strongly implicated them as pollinators. While larger bees were generally more common on the flowers than smaller bees, there appeared to be no difference between size groups in (1) the percent of females collectingPenstemon pollen, (2) the percent …

Habitat Selection By Greater Sage-Grouse During Winter In Southeastern Oregon, Christian A. Hagen, Mitchell J. Willis, Elizabeth M. Glenn, Robert G. Anthony

Western North American Naturalist

The distribution and geographic range of Greater Sage-Grouse (Centrocercus urophasianus) have been reduced by 56% since European settlement. Although loss and fragmentation of sagebrush (Artemisia spp.) habitats have been cited as the primary causes for the decline of the species, degradation of existing habitat also has been considered an important factor. Guidelines for protection and management of breeding and winter habitat have been developed for land managers, but winter habitat use has not been thoroughly described throughout the species’ range, particularly for the western portion of its range in Oregon. We examined vegetation-type selection and use by …

Effects Of A Second-Entry Prescribed Fire In A Mixed Conifer Forest, Daniel C. Laughlin, John Paul Roccaforte, Peter Z. Fulé

Western North American Naturalist

We analyzed the effects of a second-entry prescribed fire in a mixed conifer forest in Grand Canyon National Park, Arizona, 14 years after the initial burn to assess whether restoration and management objectives were achieved. The surface fire had little effect on large overstory ponderosa pine, Douglas-fir, and white fir trees and did not change total tree density or basal area. The fire reduced the overall density of conifer seedlings 87%, but had a smaller effect on seedlings >30 cm tall and on sapling density. The fire reduced litter depths by 33%, duff depths by 23%, fine woody debris by …

Diets Of Three Species Of Bufonids (Amphibia, Anura) From Northern Mexico, Geoffrey R. Smith, Julio A. Lemos-Espinal, Allison B. Burner, Kristen E. Winter, Christopher B. Dayer

Western North American Naturalist

We examined the diets of 3 species of bufonids from northern Mexico (Anaxyrus debilis, Anaxyrus punctatus, and Incilius mazatlanensis) with the objective of better understanding the diets of amphibians in this region of Mexico, which is currently undergoing environmental change. The diet of A. debilis was numerically and volumetrically dominated by termites, followed by ants. In A. debilis, some aspects of prey size were correlated with toad head width but were not related to head length or body size (i.e., snout–vent length [SVL]). Ants were numerically the most important prey item in the diet of A. punctatus, but …

Spectator 2012-01-25, Editors Of The Spectator

The Spectator

No abstract provided.

Montana Kaimin, January 25, 2012, Students Of The University Of Montana, Missoula

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

Escape To Queer Mountain: Siegfried & Roy, Queer Adolescence And The, Jeffrey L. Bohn

SPECS journal of art and culture

No abstract provided.

Afghan Genetic Mysteries, Bernard Dupaigne

Human Biology

Letter To The Editor

A Population-Genetic Perspective On The Similarities And Differences Among Worldwide Human Populations, Noah A. Rosenberg

Human Biology

Recent studies have produced a variety of advances in the investigation of genetic similarities and differences among human populations. Here, I pose a series of questions about human population- genetic similarities and differences, and I then answer these questions by numerical computation with a single shared population-genetic dataset. The collection of answers obtained provides an introductory perspective for understanding key results on the features of worldwide human genetic variation.

Transcription Factor Foxo1 Is Essential For Enamel Biomineralization, Ross A. Poché, Ramaswamy Sharma, Monica D. Garcia, Aya M. Wada, Mark J. Nolte, Ryan S. Udan, Ji Hye Paik, Ronald A. Depinho, John D. Bartlett, Mary E. Dickinson

College of Natural and Applied Sciences

The Transforming growth factor β (Tgf-β) pathway, by signaling via the activation of Smad transcription factors, induces the expression of many diverse downstream target genes thereby regulating a vast array of cellular events essential for proper development and homeostasis. In order for a specific cell type to properly interpret the Tgf-β signal and elicit a specific cellular response, cell-specific transcriptional co-factors often cooperate with the Smads to activate a discrete set of genes in the appropriate temporal and spatial manner. Here, via a conditional knockout approach, we show that mice mutant for Forkhead Box O transcription factor FoxO1 exhibit an …

Ceas E-News 01.24.2012, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Engineers Week, TAPPI Award Winner, Career Fair, Monroe-Brown Internships

Advancing Women In Stem: Why We Need It, What We've Learned, Mary Anne Holmes

Discipline-Based Education Research Group Speaker Series

Data compiled by NSF in response to its Congressional mandate indicate that the numbers of women obtaining PhDs in STEM fields is increasing, but women STEM PhDs are not appearing on the faculty at the same rate.

The "leaky pipeline" has multiple causes, many of which have found solutions through NSF's ADVANCE program. These data and solutions will inform our discussion of how science education plays a gatekeeper role in who becomes a scientist.

Faculty Senate Summarized Minutes, 1/24/2012, Unm Faculty Senate

Faculty Senate Meeting Minutes, 1920 - 2013

No abstract provided.

The Parthenon, January 24, 2012, Crystal Myers

The Parthenon

The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content.

Flyer News, Vol. 59, No. 22 (Jan. 24, 2012), University Of Dayton

Flyer News

Student-run newspaper of the University of Dayton.