Physiological Status Of Male And Female Popillia Japonica (Coleoptera: Scarabaeidae) Affects Mating And Grouping Behavior, 2019 Eastern Illinois University
Physiological Status Of Male And Female Popillia Japonica (Coleoptera: Scarabaeidae) Affects Mating And Grouping Behavior, Natasha Tigreros, Rashmi Jadhav, Katelyn A. Kowles, Britto P. Nathan, Paul Switzer
Britto P. Nathan
Because mating may be costly, sexually active males or females are predicted to be in relatively good physiological condition and may preferentially direct their mating behavior toward relatively high-quality mates. We tested this hypothesis in Japanese beetles (Popillia japonica Newman), a pest species in which males and females may be either isolated or in aggregations while feeding on host plants. We examined male size and lipid content and female size and egg load with respect to both their pairing status and whether they were isolated or in aggregations. Males that were paired had the highest lipid levels, and single, isolated ...
Uncovering The True Diversity Of Chanterelles In Indiana, 2019 Purdue University
Uncovering The True Diversity Of Chanterelles In Indiana, Jairus Chittenden
The Journal of Purdue Undergraduate Research
No abstract provided.
A New Species Of Catalinia Soleglad Et Al., 2017 (Scorpiones: Vaejovidae) From Southern California, Usa, 2019 Marshall University
A New Species Of Catalinia Soleglad Et Al., 2017 (Scorpiones: Vaejovidae) From Southern California, Usa, Rolando Teruel, Brandon Myers
Herein we describe a new species of the vaejovid scorpion genus Catalinia Soleglad, Ayrey, Graham & Fet, 2017. It was collected in a single locality of the northwestern foothills of the Santa Ana Mountains. It is most closely related to both Catalinia andreas (Gertsch & Soleglad, 1972) and C. minima (Kraepelin, 1911), but is clearly distinguished by tegumentary sculpture, morphometric ratios and pectinal tooth counts. The new species is described and illustrated in detail, with some ecological data included; moreover, a minor correction is introduced to the diagnosis of the genus.
Does A Carbonatite Deposit Influence Its Surrounding Ecosystem?, 2019 Wilfrid Laurier University
Does A Carbonatite Deposit Influence Its Surrounding Ecosystem?, James M.C. Jones, Elizabeth A. Webb, Michael D.J. Lynch, Trevor C. Charles, Pedro M. Antunes, Frédérique C. Guinel
Biology Faculty Publications
Carbonatites are unusual alkaline rocks with diverse compositions. Although previous work has characterized the effects these rocks have on soils and plants, little is known about their impacts on local ecosystems. Using a deposit within the Great Lakes–St. Lawrence forest in northern Ontario, Canada, we investigated the effect of a carbonatite on soil chemistry and on the structure of plant and soil microbial communities. This was done using a vegetation survey conducted above and around the deposit, with corresponding soil samples collected for determining soil nutrient composition and for assessing microbial community structure using 16S/ITS Illumina Mi-Seq sequencing ...
Macrophyte Distribution In Limestone Streams Of South Central Pennsylvania, 2019 Messiah College
Macrophyte Distribution In Limestone Streams Of South Central Pennsylvania, Joshua Stone
Honors Projects and Presentations: Undergraduate
Limestone streams are common in south-central Pennsylvania and arise from aquifers flowing through the abundant limestone (CaCO3) geography of the area. This action imbues the streams with several unique chemical characteristics, leading to a unique ecosystem that is occupied by very different flora and fauna from non-limestone streams in the same area. While calcium carbonate is not easily dissolved, travel through the limestone aquifer significantly changes the chemistry of the water. Limestone streams are characterized by an alkaline pH (7.0 - 8.0), ample plant nutrients, a stable and low temperature, and a relatively constant flow throughout the year ...
Turtles Of The Early Pleistocene Santa Fe River 1b Locality, 2019 Department of Biological and Environmental Sciences. Georgia College and State University
Turtles Of The Early Pleistocene Santa Fe River 1b Locality, Dennis Parmley, Robert Chandler, Linda Chandler
Georgia Journal of Science
The early Pleistocene (ca. 2.588–1.806 Ma) Santa Fe River 1B fossil site (SF1B) of Gilchrist County, Florida has yielded turtle fossils representing nine genera and at least 10 species. Of these, at least six genera are aquatic turtles (Macrochelys and/or Chelydra, Apalone, Trachemys, Pseudemys, Sternotherus, and Kinosternon) and three are terrestrial (Hesperotestudo, Gopherus, and Terrapene). Hesperotestudo and an undescribed cf. Trachemys are the only extinct turtles identified in the paleoherpetofauna. Overall, the generic composition of the turtle fauna is predominantly modern and indicative of the southeastern United States today.
A New “Vorhiesi” Group Species Of Vaejovis From The Galiuro Mountains, Southern Arizona (Scorpiones: Vaejovidae), Richard F. Ayrey, Brandon Myers
A new scorpion species, Vaejovis stetsoni sp. n. is described from Galiuro Mountains, Graham County, Arizona. This is the smallest species of the “vorhiesi” group discovered so far, most similar to V. brysoni Ayrey & Webber. The pedipalp fixed finger has five ID denticles and the movable finger has six, like in most other southern Arizona Vaejovis. The most unique characteristics of this species are its small size (18.35 mm) and a large subaculear tubercle.
Scorpions Of Sri Lanka (Arachnida: Scorpiones). Part Iii. Heterometrus Yaleensis Sp. N. (Scorpionidae), 2019 Marshall University
Scorpions Of Sri Lanka (Arachnida: Scorpiones). Part Iii. Heterometrus Yaleensis Sp. N. (Scorpionidae), František Kovařík, Kithsiri B. Ranawana, V. A. Sanjeewa Jayarathne, David Hoferek, František Šťáhlavský
Heterometrus yaleensis sp. n. from Sri Lanka, Southern Province, Yale National Park is described and compared with other species of the genus. The presence of a unique dorsointernal carina on the pedipalp chela distinguishes H. yaleensis sp. n. from all other Heterometrus species. Additional information is provided on the taxonomy and distribution of the genus Heterometrus in Sri Lanka, fully complemented with color photos of specimens of both sexes of the new species, as well as of their habitat. In addition to external morphology and hemispermatophore, we also describe the karyotype of H. yaleensis sp. n. (2n=99).
Ecology And Conservation Of Cougars In The Eastern Great Basin: Effects Of Urbanization, Habitat Fragmentation, And Exploitation, David C. Stoner
This research was designed to investigate cougar response to urbanization, habitat fragmentation, and exploitation from behavioral, demographic, and landscape perspectives. The source-sink model has been proposed as an alternative framework for the management of exploited cougar populations. I addressed the basic question of whether cougars conform behaviorally to the predictions of the source-sink model, and consequently, the applied question of whether the model could be used for the conservation of this species. To achieve this I evaluated three scale-specific questions using radio-telemetry and hunter-harvest data collected from 1996-2010. At the subpopulation scale, I tested the hypothesis that cougars are wildland ...
The Value Of Inspection Stations For Detecting Nonindigenous Species Lacking Agricultural Significance: The Mexican Treefrog, Smilisca Baudinii Complex (Duméril And Bibron 1841) (Hylidae), Interdicted In Florida, Usa, From A Shipment Of Peppers, 2019 Florida State Collection of Arthropods
The Value Of Inspection Stations For Detecting Nonindigenous Species Lacking Agricultural Significance: The Mexican Treefrog, Smilisca Baudinii Complex (Duméril And Bibron 1841) (Hylidae), Interdicted In Florida, Usa, From A Shipment Of Peppers, Louis A. Somma
Papers in Herpetology
A Mexican Treefrog, Smilisca baudinii, a nonindigenous species, was interdicted for the first time from an imported shipment of peppers. The value of agriculture inspection stations used to make these interdictions is discussed. This is a single cargo interception (Stage 1: Colautti and MacIsaac 2004) and the first record for S. baudinii intercepted in Florida. Currently no evidence suggests that S. baudinii has been successfully introduced into and established in Florida, although this species could survive climatic conditions in the southern part of the state and at the scheduled destination of this shipment.
Cargo transport of alien species is a ...
Traffic Noise And Sexual Selection: Studies Of Anthropogenic Impact On Bird Songs And Undergraduate Student Reasoning Of Evolutionary Mechanisms, 2019 University of Nebraska - Lincoln
Traffic Noise And Sexual Selection: Studies Of Anthropogenic Impact On Bird Songs And Undergraduate Student Reasoning Of Evolutionary Mechanisms, Sarah Spier
Dissertations & Theses in Natural Resources
Humans have transformed much of the natural landscape and are continuing to do so at an accelerated rate, compromising natural areas that serve as important habitat for many species. Roads impact much of the environment as they fragment habitat and introduce traffic noise into the acoustic environment, deferentially affecting wildlife in roadside habitat. I explored how traffic noise affects the detection of birds based on whether their vocalizations were masked by traffic noise. Masked species detection was not affected by an increase in traffic noise amplitude, while there was a negative effect of traffic noise amplitude on unmasked species detection ...
The Vulnerability Of Littoral Structures Under Multiyear Drought Conditions, 2019 Utah State University
The Vulnerability Of Littoral Structures Under Multiyear Drought Conditions, Jenna M. Keeton
All Graduate Theses and Dissertations
Climate change is associated with altered environmental conditions and shifting mosaics of suitable habitats for organisms. Climate change in the form of drought can shift important lake shoreline habitats downslope, altering the lakes chemistry and habitat availability. Additionally, negative biological consequences can occur after a loss of submerged habitat along shorelines, hereafter littoral habitat. The objective of this study is to evaluate whether littoral habitat is lost (cobble, coarse woody habitat (fallen trees; CWH), and aquatic vegetation) under drought conditions across the United States. I used the National Lakes Assessment physical habitat data collected in summer 2012, when 75% of ...
A Moral Panic Over Cats, 2019 Clark University
A Moral Panic Over Cats, William S. Lynn, Francisco J. Santiago-Ávila, Joann Lindenmayer, John Hadidian, Arian D. Wallach, Barbara J. King
Stray and Feral Animal Populations Collection
Some conservationists believe that free-ranging cats pose an enormous risk to biodiversity and public health and therefore should be eliminated from the landscape by any means necessary. They further claim that those who question the science or ethics behind their arguments are science deniers (merchants of doubt) seeking to mislead the public. As much as we share a commitment to conservation of biodiversity and wild nature, we believe these ideas are wrong and fuel an unwarranted moral panic over cats. Those who question the ecological or epidemiological status of cats are not science deniers, and it is a false analogy ...
Dynamic Carbon Cycling In Muskegon Lake – A Great Lakes Estuary, 2019 Grand Valley State University
Dynamic Carbon Cycling In Muskegon Lake – A Great Lakes Estuary, Katie Lynn Knapp
Ecosystem metabolism is the coupling of carbon and oxygen through photosynthesis and respiration. Gross primary production (GPP) is the carbon fixation by photosynthesis, ecosystem respiration (R) is carbon remineralization by bacterial and plankton respiration, and net ecosystem production (NEP) is the balance. Metabolism estimates determine if ecosystem is a sink or source of carbon to the atmosphere. When a lake has a positive NEP, or the GPP:R ratio is greater than 1, it is considered autotrophic and less carbon is being lost to the atmosphere than taken in, whereas if NEP is negative (GPP:R<1) it is considered heterotrophic and loses more carbon to the atmosphere. The two main objectives of my study were to: 1) estimate metabolism using 7 years of high frequency Muskegon Lake Observatory (MLO) data and a lower frequency biological oxygen demand (BOD) light-dark bottles data and 2) to determine if there was spatial heterogeneity in metabolism across Muskegon Lake using 4 buoy sites in 2016 and 2017. The first objective showed MLO 7-year average (±SD) of GPP, R, and NEP were 0.516 ± 0.466, - 0.364 ± 0.341, and 0.028 ± 0.210 mg C L-1 d-1, respectively ...1)>
Evaluating Remote Site Incubators To Support Restoration Of Arctic Grayling In Michigan, 2019 Grand Valley State University
Evaluating Remote Site Incubators To Support Restoration Of Arctic Grayling In Michigan, Alan J. Mock
Remote site incubators (RSIs) have been used to rear salmonid fish eggs along streams in the Pacific Northwest since the 1980s. Recently, the successful use of RSIs for Arctic Grayling Thymallus arcticus restoration in Montana has sparked a renewed interest to reestablish the species in Michigan. To support future reintroduction efforts of Arctic Grayling in Michigan, I evaluated RSIs in three Michigan streams during 2018 and 2019 using Rainbow Trout Oncorhynchus mykiss eggs (as surrogates for Arctic Grayling). My objectives were to: (1) compare hatching success between two different RSI designs (19-L vs. 265-L RSIs), and (2) test whether the ...
The Association Between Dietary Niche Variation In Rodents And Climate Change Across The Paleocene-Eocene Thermal Maximum, 2019 Grand Valley State University
The Association Between Dietary Niche Variation In Rodents And Climate Change Across The Paleocene-Eocene Thermal Maximum, Hannah K. Vermeer
Mammalian teeth play a crucial role in food acquisition and breakdown and are therefore closely tied to dietary niche. This study reconstructed the diet of early Paleogene paramyid rodents across the Paleocene-Eocene Thermal Maximum (PETM) climatic event in an effort to understand the role of climate in mammalian dietary niche change. Dietary niches were quantified using three dental topographic measures: Dirichlet normal energy, relief index, and orientation patch count rotated. A Kruskal-Wallis test was conducted over eight time periods to determine if each of the dental topographic measures (i.e., diet) varied over time. Regression analysis of these measures with ...
Using Tree-Ring Growth And Stable Isotopes To Explore Ponderosa Pine Ecophysiological Responses To Climate Variability And The 2012-2015 California Drought, Rachel M. Keen
All Graduate Theses and Dissertations
Climate warming in recent decades has resulted in more frequent and severe drought events in the western United States. These changes are projected to continue, making it exceedingly important to understand how forests respond to severe drought stress, and how we can manage these forests to reduce mortality during future events. The 2012-2015 California drought is a recent example of a severe, multi-year drought that was coupled with an epidemic-scale outbreak of western pine beetle, killing nearly 90% of ponderosa pines in the central and southern Sierra Nevadas. In the first portion of this study, we compared pairs of surviving ...
Molecular Phylogeny Of The Pectinoidea (Bivalvia) Indicates Propeamussiidae To Be A Non-Monophyletic Family With One Clade Sister To The Scallops (Pectinidae), G. Dalton Smedley, Jorge A. Audino, Courtney Grula, Anita Porath-Krause, Autum N. Pairett, Alvin Alejandrino, Latayshia Lacey, Felicity Masters, Peter F. Duncan, Ellen E. Strong, Jeanne M. Serb
Ecology, Evolution and Organismal Biology Publications
Scallops (Pectinidae) are one of the most diverse families of bivalves and have been a model system in evolutionary biology. However, in order to understand phenotypic evolution, the Pectinidae needs to be placed in a deeper phylogenetic framework within the superfamily Pectinoidea. We reconstructed a molecular phylogeny for 60 species from four of the five extant families within the Pectinoidea using a five gene dataset (12S, 16S, 18S, 28S rRNAs and histone H3). Our analyses give consistent support for the non-monophyly of the Propeamussiidae, with a subset of species as the sister group to the Pectinidae, the Propeamussiidae type species ...
Rcrab: An R Analytics Tool To Visualize And Analyze The Movement Of Horseshoe Crabs In Long Island Sound, 2019 Sacred Heart University
Rcrab: An R Analytics Tool To Visualize And Analyze The Movement Of Horseshoe Crabs In Long Island Sound, Ismael Youssef, Samah Senbel, Jo-Marie Kasinak, Jennifer Mattei
School of Computer Science & Engineering Faculty Publications
Mark-recapture programs are important for studying the ecology and population dynamics of wildlife. An R shiny analytics tool was developed to track the movement of horseshoe crabs in Long Island Sound based on tag and resight data. The crabs were tagged and recaptured by volunteers of Project Limulus, a community-based research program. The dataset contains tag and recapture location information for 14,065 horseshoe crabs over 18 years. The dataset was initially cleaned by removing records with missing, duplicate or incorrect data. A new data structure was developed to save the data and simplify processing: Three dimensions were used, one ...
Evaluating The Effectiveness Of Livestock Guardian Dogs: Loss-Prevention, Behavior, Space-Use, And Human Dimensions, Daniel Kinka
All Graduate Theses and Dissertations
Livestock guardian dogs – or “LGDs” – are commonly used by domestic sheep ranchers and reduce the need for killing wild carnivores to protect livestock. LGDs are mostly used in the United States to reduce the number of livestock killed by coyotes, but whether they can prevent killing by larger carnivores like wolves and grizzly bears is unclear. It is important to identify which behavioral traits and LGD breeds work best for guarding livestock so that ranchers can protect their stock and environmentalists can enjoy a greater number of wild animals on the landscape. This study investigated the effectiveness of different LGD ...