Population Biology Commons^™

Urbanization And Population Growth: Projected Impacts Of Growth On Ecological Resources In Ontario1, Laura J. Bozzelli

International ResearchScape Journal

No abstract provided.

A Model For The Prediction Of Antimicrobial Resistance In Escherichia Coli Based On A Comparative Evaluation Of Fatty Acid Profiles, Randal S. Stahl, Bledar Bisha, Sebabrata Mahapatra, Jeffrey C. Chandler

United States Department of Agriculture Wildlife Services: Staff Publications

Antimicrobial resistance is a threat to agricultural production and public health. In this proof-of-concept study, we investigated predicting antimicrobial sensitive/resistant (S/R) phenotypes and host sources of Escherichia coli (n = 128) based on differential fatty acid abundance. Myristic (14:0), pentadecanoic acid (15:0), palmitic (16:0), elaidic (18:19) and steric acid (18:0) were significantly different (α = 0.05) using a two-way ANOVA for predicting nalidixic acid, ciprofloxacin, aztreonam, cefatoxime, and ceftazidime S/R phenotypes. Additionally, analyses of palmitoleic (16:1), palmitic acid (16:0), methyl palmitate (i-17:0), and cis-9,10-methyleneoctadecanoic acid (19:0Δ) showed these markers were significantly different (α = 0.05) between isolates obtained from cattle …

Individual Based Model To Simulate The Evolution Of Insecticide Resistance, William B. Jamieson

Department of Mathematics: Dissertations, Theses, and Student Research

Insecticides play a critical role in agricultural productivity. However, insecticides impose selective pressures on insect populations, so the Darwinian principles of natural selection predict that resistance to the insecticide is likely to form in the insect populations. Insecticide resistance, in turn, severely reduces the utility of the insecticides being used. Thus there is a strong economic incentive to reduce the rate of resistance evolution. Moreover, resistance evolution represents an example of evolution under novel selective pressures, so its study contributes to the fundamental understanding of evolutionary theory.

Insecticide resistance often represents a complex interplay of multiple fitness trade-offs for individual …

Index To Volume 87

Nebraska Bird Review

14 pages: Akers, Danny 108 to Zeglen, Nancy 45

2019 Hitchcock Raptor Banding Project In Perspective, Jerry Toll

Nebraska Bird Review

Hitchcock Nature Center in Pottawattamie County, north of Crescent, Iowa, is home to the Hitchcock HawkWatch and Raptor Banding Project. The Nature Center is in the heart of the Loess Hills which, together with the flat expanse of the Missouri River Valley to the west, provides the perfect conditions for creating the updraft that aids migrating birds. The Hawkwatch began in 1992, and every fall from September through December, birds-of-prey enthusiasts gather on the 45-foot observation tower to watch and count thousands of eagles, hawks, and other raptors as they migrate south. Every year since 2007, Sandy Reinken and I …

The Nebraska Bird Review, Volume 87 December 2019 Number 4

Nebraska Bird Review

Fall Field Report, August - November 2019, by W. Ross Silcock …118-138

2019 Hitchcock Raptor Banding Project in Perspective, by Jerry Toll …138-147

Imperial Fall Field Days, Sept 13-15, 2019 …148-152

Index to Volume 87 …153-166

Subscription and Organization Information …167

Imperial Fall Field Days, Janis Paseka

Nebraska Bird Review

The 2019 NOU Fall Field Days were held in Imperial, Chase County, on September 13 - 15, with 59 registered. Field trips were led by Mark Brogie, Bill Flack, and T. J. Walker to the Wauneta cemetery, Frenchman WMA, Hayes Center WMA, Enders Reservoir WMA and SRA, Champion Mill Lake, Swinging Bridge Arboretum, Church Grove Recreation Area, Rock Creek Lake SRA and Fish Hatchery, and Swanson Reservoir SRA and WMA. Among the highlights were Osprey, which were seen at several locations, Sabine’s Gull, Ferruginous Hawk, Burrowing Owl, Red-naped Sapsucker, Merlin, and Prairie Falcon. Anita Breckbill, Doctor of Musical Arts, head …

A Survey Of Earthworm Communities Across Areas Of Varying Land Management In Northwest Arkansas, Alyssa M. Ferri

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

Earthworms are an integral component of the soil ecosystem, impacting factors including soil formation, maintenance of soil structure, and nutrient recycling. Earthworm abundances and distributions are related to abiotic soil properties and can influence the community structure. The goal of this study was to survey earthworm populations across areas of different land management histories and soil characteristics to determine if a relationship between earthworm density and land management characteristics was present. Earthworm and soil samples were collected at irregular temporal intervals from September 2017 to March 2018. In total, five sites were sampled, three at the Botanical Garden of the …

Mammal Species Inventory Using Various Trapping Methods In Zone 4 Of Billy Barquedier National Park, Belize During Rainy Season, Mersady Redding

Animal Science Undergraduate Honors Theses

Belize is a small country, but it is extremely ecologically diverse. Based on the few studies conducted in Belize, the abundance of mammals is low but diversity is high. Particular findings note the number and identity of species differed between four sites in the Maya Mountains of Belize, indicating that a data set from a single site is not representative of the Neotropical region. Insufficient data is available to estimate current species richness of many areas in Belize, including Billy Barquedier National Park (BBNP). The objective of this study was to explore trapping and documentation methods of terrestrial mammals in …

Genetic Diversity Of Blue Wildebeest (Connochaetes Taurinus) In The Liuwa Plain Of Zambia, Stephanie J. Szarmach

All NMU Master's Theses

Advances in DNA sequencing are enabling researchers to identify and genotype large sets of single nucleotide polymorphisms (SNPs) in non-model organisms to answer questions concerning ecology, evolution, and conservation. Analysis of SNP allele frequencies can provide insight into the amount of genetic diversity present in a population, connectivity between populations, and historical demographic changes. The blue wildebeest (Connochaetes taurinus) plays an important ecological role in many African savanna ecosystems, but little is known about the level of genetic diversity within most populations or the amount of gene flow that occurs between populations. In particular, the wildebeest in the …

Changes In The Diet And Body Size Of A Small Herbivorous Mammal (Hispid Cotton Rat, Sigmodon Hispidus) Following The Late Pleistocene Megafauna Extinction, Catalina P. Tomé, Emma A. Elliott Smith, S. Kathleen Lyons, Seth D. Newsome, Felisa A. Smith

School of Biological Sciences: Faculty Publications

The catastrophic loss of large-bodied mammals during the terminal Pleistocene likely led to cascading effects within communities. While the extinction of the top consumers probably expanded the resources available to survivors of all body sizes, little work has focused on the responses of the smallest mammals. Here, we use a detailed fossil record from the southwestern United States to examine the response of the hispid cotton rat Sigmodon hispidus to biodiversity loss and climatic change over the late Quaternary. In particular, we focus on changes in diet and body size. We characterize diet through carbon (δ¹³C) and nitrogen …

Male Burmese Pythons Follow Female Scent Trails And Show Sex-Specific Behaviors, Shannon A. Richard, Eric A. Tillman, John S. Humphrey, Michael L. Avery, M. Rockwell Parker

United States Department of Agriculture Wildlife Services: Staff Publications

Animals communicate with potential mates using species-specific signals, and pheromones are powerful sexual signals that modify conspecific behavior to facilitate mate location. Among the vertebrates, snakes are especially adept in mate searching via chemical trailing, which is particularly relevant given that many snake species are invasive outside their native ranges. Chemical signals used in mate choice are, thus, potentially valuable tools for management of invasive snake species. The Burmese python (Python bivittatus) is an invasive snake in the Florida Everglades where it is negatively impacting native fauna. In this study, we sought to: (i) determine if males can follow conspecific …

Variation In Host Home Range Size Decreases Rabies Vaccination Effectiveness By Increasing The Spatial Spread Of Rabies Virus, Katherine M. Mcclure, Amy T. Gilbert, Richard B. Chipman, Erin E. Rees, Kim M. Pepin

United States Department of Agriculture Wildlife Services: Staff Publications

1. Animal movement influences the spatial spread of directly transmitted wildlife disease through host-host contact structure. Wildlife disease hosts vary in home range- associated foraging and social behaviours, which may increase the spread and intensity of disease outbreaks. The consequences of variation in host home range movement and space use on wildlife disease dynamics are poorly understood, but could help to predict disease spread and determine more effective disease management strategies.
2. We developed a spatially explicit individual-based model to examine the effect of spatiotemporal variation in host home range size on the spatial spread rate, persistence and incidence of rabies virus …

Designation Of A Neotype For Oeneis Melissa (Fabricius, 1775) And A Lectotype For Oeneis Polixenes (Fabricius, 1775) (Lepidoptera: Nymphalidae: Satyrinae), Crispin S. Guppy

The Taxonomic Report of the International Lepidoptera Survey

The Oeneis melissa (Fabricius, 1775) “neotype” designations of Lukhtanov and Eitschberger (2000; 2001) do not meet several critical requirements of the ICZN and are therefore invalid. In addition, the locality data is too vague to be taxonomically useful, their “neotype” specimen is a specimen of the taxon generally known as O. melissa semplei, and acceptance of their specimen as neotype would change the meaning of the taxon Oeneis melissa. Hence, I reject their neotype designation. A neotype Oeneis melissa (Fabricius, 1775) is designated from Nain, Labrador with careful consideration of the Articles of the International Code of Zoological …

Food Habits Of Coyotes (Canis Latrans) In The Valles Caldera National Preserve, New Mexico, Suzanne J. Gifford, Eric M. Gese, Robert R. Parmenter

United States Department of Agriculture Wildlife Services: Staff Publications

Wildlife managers needed to understand coyote (Canis latrans) ecology in order to develop management plans on the nascent Valles Caldera National Preserve in northern New Mexico. Managers concerned about low elk (Cervus elaphus) recruitment had observed an increase in sightings of coyotes and observations of coyote predation on elk calves. Our objective was to identify and quantify coyote diet, and assess the temporal variation in coyote diet on the Valles Caldera National Preserve, particularly as related to elk calf consumption. We examined coyote food habits using 1,385 scats analyzed monthly from May 2005 to November 2008. …

Habitat Associations And Reproduction Of Fishes On The Northwestern Gulf Of Mexico Shelf Edge, Elizabeth Marie Keller

LSU Doctoral Dissertations

Several of the northwestern Gulf of Mexico (GOM) shelf-edge banks provide critical hard bottom habitat for coral and fish communities, supporting a wide diversity of ecologically and economically important species. These sites may be fish aggregation and spawning sites and provide important habitat for fish growth and reproduction. Already designated as habitat areas of particular concern, many of these banks are also under consideration for inclusion in the expansion of the Flower Garden Banks National Marine Sanctuary. This project aimed to gain a more comprehensive understanding of the communities and fish species on shelf-edge banks by way of gonad histology, …

Impact Of The Human Footprint On Anthropogenic Mortality Of North American Reptiles, Jacob E. Hill, Travis L. Devault, Jerrold L. Belant

United States Department of Agriculture Wildlife Services: Staff Publications

Human activities frequently result in reptile mortality, but how direct anthropogenic mortality compares to natural morality has not been thoroughly investigated. There has also been a limited examination of how anthropogenic reptile mortality changes as a function of the human footprint. We conducted a synthesis of causespecific North American reptile mortality studies based on telemetry, documenting 550 mortalities of known cause among 2461 monitored individuals in 57 studies. Overall 78% of mortality was the result of direct natural causes, whereas 22% was directly caused by humans. The single largest source of mortality was predation, accounting for 62% of mortality overall. …

Changes To North American Butterfly Names, Jing Zhang, Qian Cong, Jinhui Shen, Paul A. Opler, Nick V. Grishin

The Taxonomic Report of the International Lepidoptera Survey

We obtained and analyzed whole genome shotgun sequences of all 845 species of butterflies recorded from Canada and the United States. Genome-scale phylogenetic trees constructed from the data reveal several nonmonophyletic genera and suggest improved classification of species included in these genera. Here, these changes are formalized and 2 subgenera are described: Amblyteria Grishin, subgen. n. (type species Goniloba exoteria Herrich-Schäffer, 1869, parent genus Amblyscirtes Scudder, 1872), and Coa Grishin, subgen. n. (type species Hesperia baracoa Lucas, 1857, parent genus Polites Scudder, 1872). Furthermore, we resurrect 3 genera and 2 subgenera from synonymy, change the rank of 6 currently used …

Rabies Surveillance Identifies Potential Risk Corridors And Enables Management Evaluation, Amy J. Davis, Kathleen M. Nelson, Jordana D. Kirby, Ryan M. Wallace, Xiaoyue Ma, Kim M. Pepin, Richard B. Chipman, Amy Gilbert

United States Department of Agriculture Wildlife Services: Staff Publications

Intensive efforts are being made to eliminate the raccoon variant of rabies virus (RABV) from the eastern United States and Canada. The United States Department of Agriculture (USDA) Wildlife Services National Rabies Management Program has implemented enhanced rabies surveillance (ERS) to improve case detection across the extent of the raccoon oral rabies vaccination (ORV) management area. We evaluated ERS and public health surveillance data from 2006 to 2017 in three northeastern USA states using a dynamic occupancy modeling approach. Our objectives were to examine potential risk corridors for RABV incursion from the U.S. into Canada, evaluate the effectiveness of ORV …

Data Of Soil, Vegetation And Bird Species Found On Double-Crested Cormorant Colonies In The Southeastern United States, Leah Moran Veum, Brian S. Dorr, Katie Hanson-Dorr, R. J. Moore, Scott A. Rush

United States Department of Agriculture Wildlife Services: Staff Publications

This data article provides the methods and procedures followed to collect and analyse soil, vegetation and bird data on three different treatment islands in Guntersville Reservoir, Alabama. Samples were collected from randomly selected plot points from islands that were placed into three different treatment types: Colony (currently occupied by Double-crested Cormorants) (Phalacrocorax auritus; n 1⁄4 5), Historic (historically occupied by cormorants and currently abandoned; n 1⁄4 3) and Reference (never occupied by cormorants; n 1⁄4 4). We compared vegetation and tree metrics such as structure and diversity, as well as soil chemistry and bird diversity and communities among islands within …

Cercarial Parasitism Of Freshwater Snails In Sandhills Ponds Versus Streams, Caroline Emily Spethman

Honors Program: Senior Projects (Public)

Parasite prevalence was calculated for all aquatic snails collected from four freshwater localities in Western Nebraska from Summer 2016 to 2019: Dunwoody Pond, Haythorn Ranch, Neven’s Restoration, and Breen’s Flyaway. With data of increasing trematode cercarial infection specifically at Dunwoody Pond, this community was further studied. In Summer 2019, a total of 217 freshwater snails representing species of Physa sp., Stagnicola elodes (Say,1821), and Helisoma anceps (Menke,1830) were collected from Dunwoody Pond and Dunwoody stream, near Ogallala, Nebraska. Eighty-one snails were collected from Dunwoody Pond, 76 snails were collected 31 meters upstream, and 60 snails were collected 61 meters upstream …

Reproductive Parameters And Female Breeding Season Survival Of Rio Grande Wild Turkeys In South Central Texas, Jacob White

LSU Master's Theses

Historically, Rio Grande wild turkeys in south central Texas have been at lower densities than other portions of the state. Within the Oak-Prairie Wildlife District of Texas, Rio Grande wild turkey regulatory restrictions are different for counties in the eastern and western portions of the ecoregion. Due to perceived increases in turkey density in the eastern portion of the ecoregion (hereafter 1-bird zone), Texas Parks and Wildlife Department (TPWD) considered increasing the bag limit to match counties in the western portion of the district (hereafter 4-bird zone) in order to increase hunting opportunities. However, if regulatory changes are to be …

The Distribution And Demography Of The Invasive Pacific Oyster, Crassostrea Gigas, And Native Olympia Oyster, Ostrea Lurida, In The San Diego River, Jason Langevin

Theses

Even though the introduction of the Pacific Oyster, Crassostrea gigas, to the west coast of North America, happened roughly a century ago, it has only been in the past 15 to 20 years that C. gigas has started to become an established and conspicuous species along Southern California’s coast. The establishment of C. gigas in Southern California has the potential to heavily influence many native species, as it has done globally. In Southern California, this invasion is particularly relevant for the native Olympia Oyster, Ostrea lurida. The Olympia oyster has both historical and present-day threats to its population, …

The Tail Wagging The Dog: Positive Attitude Towards Livestock Guarding Dogs Do Not Mitigate Pastoralists’ Opinions Of Wolves Or Grizzly Bears, Daniel Kinka, Julie K. Young

United States Department of Agriculture Wildlife Services: Staff Publications

While the re-establishment of grizzly bears (Ursus arctos) and wolves (Canis lupus) in the American West marks a success for conservation, it has been contentious among pastoralists. Coincidentally, livestock guarding dogs (LGDs; Canis familiaris) have been widely adopted by producers of domestic sheep (Ovis aries) in the United States to mitigate livestock depredation by wild carnivores. We surveyed pastoralists to measure how experience with and attitudes towards LGDs related to attitudes towards livestock predators, and found positive responses regarding LGDs and negative responses regarding wolves and grizzly bears. The more respondents agreed that LGDs reduce the need for lethal management …

Parameter Estimation Within An Sir Model Of Chestnut Blight In North America, Anita Davelos Baines, Hope B. Anderson, John S. Mcalister, Robert F. Allen

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Engaging Undergraduates In Research In Mathematical Biology With Limited Resources, Timothy Comar

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Period Drift In A Neutrally Stable Stochastic Oscillator, Kevin Sanft

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Analysis Of An Agent-Based Model For Integrated Pest Management With Periodic Control Strategies, Timothy Comar

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Modeling Control Methods To Manage The Sylvatic Plague In Black-Tailed Prairie Dog Towns, David C. Elzinga, Shelby R. Stowe, Leland Russell

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Improving Parasite Transmission Parameters For A Mathematical Model Of Swimmer's Itch Through Both Empirical And Analytical Techniques, Josey Sorenson

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.