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Evaluation Of Conservation Strategies For Blanding’S Turtles (Emydoidea Blandingii), Callie Klatt Golba Jan 2024

Evaluation Of Conservation Strategies For Blanding’S Turtles (Emydoidea Blandingii), Callie Klatt Golba

Graduate Research Theses & Dissertations

Across the globe, biodiversity is threatened due to anthropogenic changes to the environment and large numbers of freshwater species, especially turtles, are facing population declines. Resources for conservation are limited, making empirically based conservation planning of utmost importance. Effective management strategies incorporate relevant biological information to outline specific and feasible actions that will mitigate the greatest threats to a species. Blanding’s Turtles (Emydoidea blandingii) are a long-lived, semi-aquatic, freshwater species that are classified as endangered in Illinois and internationally. As with other species of concern, Blanding’s Turtles are threatened by habitat loss, fragmentation, and degradation. They are also threatened by …

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Long- And Short-Term Weather Variables Affect Capture Rates In Western Painted Turtles (Chrysemys Picta Bellii) In Marshall Co., South Dakota, Amy Dolan, Heather L. Waye, Peter Dolan Jan 2024

Long- And Short-Term Weather Variables Affect Capture Rates In Western Painted Turtles (Chrysemys Picta Bellii) In Marshall Co., South Dakota, Amy Dolan, Heather L. Waye, Peter Dolan

Biology Publications

Turtle populations are declining globally, and yet accurate long-term population surveys are often lacking. Even amongst widespread species, information on long-term population trends is largely missing. As such, studies on demographics, population structure, and factors that affect capture efficacy are needed. In 2019 we began a long-term study on Western Painted Turtles (Chrysemys picta bellii) in the Couteau des Prairie habitat in northeastern South Dakota. We captured turtles using several trapping techniques and investigated the effects of short- and long-term weather variables on catch per unit effort. Temperature was positively associated with daily capture rates, showing the strongest …

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Comparative Study On Reproductive Behavior Of Three Thai Indigenous Apple Snails Pila Celebensis (Quoy & Gaimard, 1834), P. Pesmei (Morlet, 1889) และ P. Virescens (Deshayes, 1824), Supunya Annate Jan 2024

Comparative Study On Reproductive Behavior Of Three Thai Indigenous Apple Snails Pila Celebensis (Quoy & Gaimard, 1834), P. Pesmei (Morlet, 1889) และ P. Virescens (Deshayes, 1824), Supunya Annate

Chulalongkorn University Theses and Dissertations (Chula ETD)

Species of the Thai indigenous apple snail genus Pila Röding, 1798 are undergoing population decline. Accordingly, their conservation is needed, but the lack of knowledge of their reproductive biology is a significant obstacle to implementing conservation measures. Therefore, this study analyzed the mating and egg-laying behavior of three of the five Thai indigenous apple snails: P. celebensis, P. pesmei, and P. virescens using continuous video recording under laboratory conditions. In addition, the egg-laying behavior of P. virescens in a seminatural habitat was observed in the rainy season of 2023. Moreover, their egg, egg mass, incubation time, and hatchling characteristics were …

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A Worldwide Overview Of The Status And Prospects Of Edible Insect Production, R. Caparros Megido, F. Francis, E. Haubruge, P. Le Gall, J. K. Tomberlin, C. D. Miranda, H. R. Jordan, C. J. Picard, M. J.M. Pino, J. Ramos-Elordy, E. Katz, K. B. Barragán-Fonseca, E. M. Costa-Neto, R. Ponce-Reyes, G. Wijffels, S. Ghosh, C. Jung, Y. S. Han, B. Conti, A. Vilcinskas, C. M. Tanga, M. O. Kababu, D. Beesigamukama, J. A. Morales Ramos, A. Van Huis Jan 2024

A Worldwide Overview Of The Status And Prospects Of Edible Insect Production, R. Caparros Megido, F. Francis, E. Haubruge, P. Le Gall, J. K. Tomberlin, C. D. Miranda, H. R. Jordan, C. J. Picard, M. J.M. Pino, J. Ramos-Elordy, E. Katz, K. B. Barragán-Fonseca, E. M. Costa-Neto, R. Ponce-Reyes, G. Wijffels, S. Ghosh, C. Jung, Y. S. Han, B. Conti, A. Vilcinskas, C. M. Tanga, M. O. Kababu, D. Beesigamukama, J. A. Morales Ramos, A. Van Huis

All Peer-Reviewed Publications

There has been continuous and growing interest in edible insects. Worldwide, various levels of insect farming are emerging, ranging from small domestic farms to vertical farms reaching heights of 36 meters, accommodating several million growing insects. The appeal of insects lies in their ecological benefits, as they contribute to the valorization of unde-rutilized organic residues while requiring minimal space and water. The selection of insect species is influenced not only by their biology and behavior but also by local preferences and customs, varying with the scale of production and geographi-cal location. This review article aims to provide an updated overview …

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The Effects Of Native Perennial Cover On Physiological Indicators Of Habitat Quality For Sparrows In California Coastal Prairie Rangelands, Madeleine A. Ybarra Jan 2024

The Effects Of Native Perennial Cover On Physiological Indicators Of Habitat Quality For Sparrows In California Coastal Prairie Rangelands, Madeleine A. Ybarra

Cal Poly Humboldt theses and projects

Prescribed grazing management can have myriad effects on wildlife, with low to moderate grazing being associated with an increased abundance of some grassland birds. Specifically, Grasshopper Sparrow (Ammodramus savannarum) and Savannah Sparrow (Passerculus sandwichensis) abundance have been shown to be positively associated with both grazing and a higher percentage of native plant cover. However, measures of abundance provide an incomplete assessment of habitat quality for birds. Physiological and morphological measurements can help indicate environmental stress in individual birds, which reveals more information about habitat quality. We measured body condition and heterophil:lymphocyte ratios to gauge avian stress …

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Escarpments Within Mediterranean Seagrass Posidonia Oceanica Meadows Increase Habitat Heterogeneity And Structural Complexity Enhancing Fish Diversity And Biomass, Enric Gomis, Enric Ballesteros, Irene Bernabeu, Karina Inostroza, Miguel A. Mateo, Oscar Serrano Jan 2024

Escarpments Within Mediterranean Seagrass Posidonia Oceanica Meadows Increase Habitat Heterogeneity And Structural Complexity Enhancing Fish Diversity And Biomass, Enric Gomis, Enric Ballesteros, Irene Bernabeu, Karina Inostroza, Miguel A. Mateo, Oscar Serrano

Research outputs 2022 to 2026

Seagrass meadows provide important ecosystem services including carbon sequestration, coastal protection from erosion, and sustained biodiversity and fisheries thereby improving the wellbeing and livelihoods of coastal communities. The erosion of millenary deposits of intertwined roots and rhizomes of Posidonia results in the formation of three-dimensional structures named escarpments that constitute a biogenic reef habitat. However, the natural history of seagrass escarpments including their formation processes and their role as habitat for reef fauna and flora remains poorly understood. This research located and characterized Posidonia oceanica escarpments in Menorca (Balearic Islands) and compared structural complexity and fish assemblages among seagrass escarpments, …

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An Overview Of The Brazilian Chrysomelidae (Insecta: Coleoptera): The Most Species-Rich Beetle Family In Brazil, Adelita M. Linzmeier, Luciano De A. Moura, Cibele S. Ribeiro-Costa, Daiara Manfio, Federico Agrain, Maria L. Chamorro, Geoffrey Morse, Renato Regalin, Lukáš Sekerka Jan 2024

An Overview Of The Brazilian Chrysomelidae (Insecta: Coleoptera): The Most Species-Rich Beetle Family In Brazil, Adelita M. Linzmeier, Luciano De A. Moura, Cibele S. Ribeiro-Costa, Daiara Manfio, Federico Agrain, Maria L. Chamorro, Geoffrey Morse, Renato Regalin, Lukáš Sekerka

Biology: Faculty Scholarship

The leaf beetles (Chrysomelidae) are one of the most species-rich family of herbivorous beetles with about 45,000 species worldwide. Based on the contributions of chrysomelidologists to the Taxonomic Catalog of the Brazilian Fauna - CTFB, the family comprises 6,079 species in 562 genera of which 951 species are endemic to Brazil, standing out as the most diverse, representing 4.8% of the Brazilian fauna and 17.1% of the beetle species. Chrysomelidae has twelve subfamilies with nine reported to Brazil: Galerucinae, the richest with 1,916 species in 202 genera, followed by Cassidinae, Eumolpinae, Cryptocephalinae, Chrysomelinae, Bruchinae, Criocerinae, Lamprosomatinae and Sagrinae - this …

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Examining The Role Of Microbial Communities In Soil Carbon Cycling Across Levels Of Complexity, Chansotheary Dang Jan 2024

Examining The Role Of Microbial Communities In Soil Carbon Cycling Across Levels Of Complexity, Chansotheary Dang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Microorganisms provide the foundation for many ecosystem processes and are important drivers of carbon and nutrient cycling. The advancement of next generation sequencing has allowed researchers to lift open the lid on the ‘black box’ in microbial ecology. While previously unculturable microbes can now be characterized with the 16S rRNA gene, answering ‘who’s there?’ is only part of the challenge. Hidden inside the ‘black box’ remains the question, ‘who’s doing what?’. Recent development in trait-based methods like quantitative stable isotope probing (qSIP) equipped microbial ecologists with the tool to connect taxon-specific traits to ecosystem processes. Despite the growing body of …

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Measures Of Feed Efficiency In Beef Cattle: Biological Basis And Effect On Response To Dietary Supplementation, Modoluwamu Idowu Jan 2024

Measures Of Feed Efficiency In Beef Cattle: Biological Basis And Effect On Response To Dietary Supplementation, Modoluwamu Idowu

Graduate Theses, Dissertations, and Problem Reports (ETD)

During the feedlot receiving period, newly weaned beef cattle face various stressors, including weaning, transportation, vaccination, and exposure to pathogens. Additionally, changes in diet and low dry matter intake contribute to nutrient deficiencies, heightening susceptibility to disease and performance declines. Therefore, we examined the effects of dietary supplementation with a multicomponent blend of prebiotics and probiotics on the health, immune status, metabolism, and performance of newly weaned beef steers during a 35-day receiving period. Our results showed that compared to the control group, the supplemental additive (SYNB) increased average daily gain (ADG), dry matter intake, and meal events during the …

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Scale And Habitat Effects On Measurement Of Streptomyces Biogeography And Biodiversity, Terilyn A. Stoflet Jan 2024

Scale And Habitat Effects On Measurement Of Streptomyces Biogeography And Biodiversity, Terilyn A. Stoflet

Cal Poly Humboldt theses and projects

Bacteria in the genus Streptomyces are detected in most soils around the world, as well as on and in seeds, plants, animals, insects and the wind. Currently, more than 700 valid species of Streptomyces have been identified worldwide. Streptomyces produce the majority of antibiotics, antivirals and antifungals, as well as important agricultural bioactive molecules due to their unique genetic capabilities. Their distinct genetic abilities allow them to produce an unlimited amount of biosynthetic gene clusters, or BGC’s. Although many compounds come from Streptomyces, scientists have not discovered the biogeographic patterns of this genus. The biogeography of Streptomyces is a …

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Mitochondrial Metabolism In Blood More Reliably Predicts Whole-Animal Energy Needs Compared To Other Tissues, Stefania Casagrande, Maciej Dzialo, Lisa Trost, Kasja Malkoc, Edyta T. Sadowska, Michaela Hau, Barbara J. Pierce, Scott R. Mcwilliams, Ulf Bauchinger Dec 2023

Mitochondrial Metabolism In Blood More Reliably Predicts Whole-Animal Energy Needs Compared To Other Tissues, Stefania Casagrande, Maciej Dzialo, Lisa Trost, Kasja Malkoc, Edyta T. Sadowska, Michaela Hau, Barbara J. Pierce, Scott R. Mcwilliams, Ulf Bauchinger

Biology Faculty Publications

Understanding energy metabolism in free-ranging animals is crucial for ecological studies. In birds, red blood cells (RBCs) offer a minimally invasive method to estimate metabolic rate (MR). In this study with European starlings Sturnus vulgaris, we examined how RBC oxygen consumption relates to oxygen use in key tissues (brain, liver, heart, and pectoral muscle) and versus the whole-organism measured at basal levels. The pectoral muscle accounted for 34-42% of organismal MR, while the heart and liver, despite their high mass-specific metabolic rate, each contributed 2.5-3.0% to organismal MR. Despite its low contribution to organismal MR (0.03-0.04%), RBC MR best predicted …

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Investigating Telomere Lengths In Chestnut-Crowned Babblers, Gabriella Rose Beberg Dec 2023

Investigating Telomere Lengths In Chestnut-Crowned Babblers, Gabriella Rose Beberg

Honors Thesis

Telomeres are chromosomal elements that protect and maintain genes as DNA replicates in many organisms. As individuals age and DNA replicates, telomeres often shorten; thus, telomere length often corresponds with an individual’s lifespan, and early-life decreases in telomere length can be predictive of longevity. Here, I investigated the relationship between telomere length and developmental environment in a cooperatively breeding species, the chestnut-crowned babbler (Pomatostomus ruficeps; CCB). Cooperative species are unique, as some individuals give up their own breeding opportunities to help rear the offspring of others; further, cooperative breeding systems generate considerably more variation in adult carers, which …

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Can The Vegetation Structure And Composition In Urban Green Spaces Determine Diversity Of Green Lacewings (Neuroptera: Chrysopidae)?, Jose I. Martinez, Raiza J. Castillo, Adrián Ardila-Camacho, Charles V. Covell, José Isabel López-Arroyo, Francisco Javier Nava-Guízar Dec 2023

Can The Vegetation Structure And Composition In Urban Green Spaces Determine Diversity Of Green Lacewings (Neuroptera: Chrysopidae)?, Jose I. Martinez, Raiza J. Castillo, Adrián Ardila-Camacho, Charles V. Covell, José Isabel López-Arroyo, Francisco Javier Nava-Guízar

Insecta Mundi

Green spaces represent the only natural areas in several cities around the world, providing good shelters for the local fauna. Based on this premise, many ecological studies have been conducted focused on these areas. Most of these works are about insects, particularly butterflies and beetles. Our study is centered on a different group: green lacewings (Neuroptera: Chrysopidae). These insects exhibit a similar feeding behavior to some other groups, such as beetles. We estimated diversity, richness, distribution, abundance and similarity employing two methods: sweep netting and suction trapping. Also, oviposition hosts were identified in 20 different green spaces. Approximately 740 specimens …

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Exploring The Interrelationships Among Structural Complexity, Multi-Trophic Biodiversity, And Ecosystem Productivity In Forested Ecosystems., Ayanna St. Rose Dec 2023

Exploring The Interrelationships Among Structural Complexity, Multi-Trophic Biodiversity, And Ecosystem Productivity In Forested Ecosystems., Ayanna St. Rose

Graduate Theses and Dissertations

Forests play a pivotal role in sustaining global biodiversity and mitigating the global climate, as they serve as the primary refuge for terrestrial biodiversity and effectively capture and store atmospheric carbon dioxide. However, changing climate and land use are altering the geographic distribution, physical structure, and productivity of forested ecosystems that can have profound impacts on biodiversity conservation, forest productivity, and global climate. This dissertation contributes to our understanding of multifaceted interactions between the physical and biological structural complexity and ecosystem functions in forested landscapes across the United states by using openly available data from two national networks: the National …

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Human Dimensions Of Woody Encroachment Management In Nebraska, Emily Rowen Dec 2023

Human Dimensions Of Woody Encroachment Management In Nebraska, Emily Rowen

School of Natural Resources: Dissertations, Theses, and Student Research

Woody plant encroachment (WPE) is a social-ecological problem that will challenge conservation professionals and agricultural producers to adapt their management strategies. This research first examined WPE from the perspective of individual conservation professionals through an online survey. Conservation professionals’ attitudes about adaptation to vegetation transitions, such as WPE, were of interest because these attitudes are one measure of how prepared this group is to respond to WPE. Hypothesized predictors of adaptation attitude were tested through linear regression modeling. These predictors included ecological change, observation of WPE, or risk perception. It was found that risk perception was the strongest predictor of …

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Seagrass Epibiont Biodiversity In The Northern Gulf Of Mexico, Kathryn Wyssmann Dec 2023

Seagrass Epibiont Biodiversity In The Northern Gulf Of Mexico, Kathryn Wyssmann

LSU New Orleans Theses and Dissertations

Epibionts on seagrass leaves contribute substantially to productivity and trophic interactions in seagrass ecosystems. Differences in epibiont assemblages and factors that contribute to epibiont diversity have been little studied on the seagrass Halodule wrightii in the northern Gulf of Mexico (nGoM). We used a metabarcoding approach to describe epibiont assemblages on H. wrightii leaves in four bays across the nGoM and to test whether epibiont assemblages differed spatially at local levels (within bays) or regional levels (from west to east). Furthermore, we tested if epibiont diversity was related to environmental conditions and/or seagrass productivity. Epibiont assemblages differed significantly between bays …

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Evolution And Natural Selection Of Olfactory Receptor Genes In Hawaiian Drosophila, Ngoc H. Ly Dec 2023

Evolution And Natural Selection Of Olfactory Receptor Genes In Hawaiian Drosophila, Ngoc H. Ly

UNLV Theses, Dissertations, Professional Papers, and Capstones

The olfactory system is a powerful tool for sensing countless odorants. In Drosophila, the olfactory system is critical for detecting food, finding mates, laying eggs, avoiding predators, and adapting to new environments. Understanding the olfactory system in Drosophila will advance our knowledge of sensory biology in various insects and vertebrates, including humans. Drosophila has been a valuable model for biology since the early 1900s, and the Drosophila melanogaster olfactory system is well-studied. The Hawaiian Drosophila represent approximately 1/3 of the world’s Drosophila, however, there is limited research on Hawaiian Drosophila olfactory genes. We conducted a comparative analysis of …

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Linking Microbial Community Assembly In Flowers With Function Under Diverse Environmental Conditions: A Case Study Involving Erwinia Amylovora, Christopher Skylar Mcdaniel Dec 2023

Linking Microbial Community Assembly In Flowers With Function Under Diverse Environmental Conditions: A Case Study Involving Erwinia Amylovora, Christopher Skylar Mcdaniel

All Graduate Theses and Dissertations, Fall 2023 to Present

Fire blight, a devastating disease of pome fruit trees caused by the bacterium Erwinia amylovora, can cause millions of dollars in losses for producers each year around the globe. Management approaches that involve use of antibiotics, such as streptomycin, can be effective; although concerns exist over pollinator and crop health when using them regularly. Recently, there have been developments that allow for biological agents such as microbes to curtail fire blight infection. These agents work by competing with Erwinia for resources or space, producing antibacterial compounds, or even killing Erwinia cells on contact. Unfortunately, these agents do not yet …

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Specialized Recreation, Spatial Behavior, And Ecological Implications In The Nature Reserve Of Orange County, Ca, Jake Van Deursen Dec 2023

Specialized Recreation, Spatial Behavior, And Ecological Implications In The Nature Reserve Of Orange County, Ca, Jake Van Deursen

All Graduate Theses and Dissertations, Fall 2023 to Present

A widespread surge in park and protected area (PPA) visitation strikes managers with the imminent challenge of preserving ecological conditions and maintaining accessibility in the open spaces that are a fundamental component to the health and wellness needs of society. In the field of recreation resource management, recreation specialization, the selective channeling of interests and abilities into a specific recreational activity, has contributed to comprehensive understandings of recreation behavior, site preference, management perceptions and conservation support. Contributing to historical understandings of specialization can inform recreation planning on the diversity of uses occurring in urban-proximate PPAs. Survey data providing information on …

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Phenology Of The Invasive Balsam Woolly Adelgid, Adelges Piceae (Ratz.) (Hemiptera: Adelgidae), On Subalpine Fir In Northern Utah, Elizabeth L. Rideout Dec 2023

Phenology Of The Invasive Balsam Woolly Adelgid, Adelges Piceae (Ratz.) (Hemiptera: Adelgidae), On Subalpine Fir In Northern Utah, Elizabeth L. Rideout

All Graduate Theses and Dissertations, Fall 2023 to Present

Balsam woolly adelgid (BWA) is an invasive true fir pest in North America. Native to Europe, BWA was first discovered in Utah attacking subalpine fir in 2017. Recent BWA-caused subalpine fir mortality in northern Utah has prompted the need for baseline biological research to support pest management. Small-bodied and blending easily with its environment, BWA is a challenging pest to detect and study. Phenology, or the timing and characteristics of life stages through the year, of BWA varies depending on elevation and climate and is unstudied in Utah. This research focuses on defining aspects of BWA’s phenology, including the number …

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The Endoparasite Fauna Of Mesopredatory Mesopelagic Teleosts, Alexander U. Rayburn Dec 2023

The Endoparasite Fauna Of Mesopredatory Mesopelagic Teleosts, Alexander U. Rayburn

All HCAS Student Capstones, Theses, and Dissertations

The ecology of the mesopelagic zone is an understudied area of the open ocean, with few diet studies even for dominant fish species. Since endoparasites are generally transmitted trophically, descriptions of the parasite communities within fishes can often provide additional insights on food web interactions. This project assesses the endoparasite faunal community of mesopredatory mesopelagic teleosts to better understand mesopelagic food webs in the South Atlantic Bight. Fishes in the Families Alepisauridae (lancetfishes), Gempylidae (snake mackerels), Bramidae (pomfrets), and Scombrolabracidae (longfin escolar) are frequent bycatch in the pelagic longline fishery targeting swordfish Xiphias gladius and thunnid tunas, yet the ecology …

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Evaluating Functional Diversity As Potential Early-Warning Indicator Of Rangeland Degradation, L.-M. Schwarz, C. P. Carmona, M. C. Bilton, F. Munyebvu-Chambara, K. Behn, A. Linstädter Nov 2023

Evaluating Functional Diversity As Potential Early-Warning Indicator Of Rangeland Degradation, L.-M. Schwarz, C. P. Carmona, M. C. Bilton, F. Munyebvu-Chambara, K. Behn, A. Linstädter

IGC Proceedings (1977-2023)

Droughts and overgrazing play a crucial role in the degradation of semi-arid rangelands. This is evident in the loss of palatable long-lived grass species and bush encroachment. Early warning indicators are needed to mitigate long-term degradation and decline in essential forage provision. Functional diversity provides valuable information on ecosystem health. However, functional diversity indices have not yet been tested regarding their applicability as early warning indicators, revealing non-linear threshold behaviour. We therefore examined the following questions: (1) How do functional diversity indices respond to grazing pressure? (2) Does land tenure affect the relationship between functional diversity and grazing pressure? (3) …

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Ecological Change And Livestock Governance In A Peruvian National Park, Kenneth R. Young, Eyner Alata, Rodney Chimner, Randall B. Boone, Gillian Bowser, Laura Bourgeau-Chavez, Beatriz Fuentealba, Jessica Gilbert, Javier A. Ñaupari, Molly H. Polk, Sigrid Resh, Cecilia Turin, Melody Zarria-Samanamud Nov 2023

Ecological Change And Livestock Governance In A Peruvian National Park, Kenneth R. Young, Eyner Alata, Rodney Chimner, Randall B. Boone, Gillian Bowser, Laura Bourgeau-Chavez, Beatriz Fuentealba, Jessica Gilbert, Javier A. Ñaupari, Molly H. Polk, Sigrid Resh, Cecilia Turin, Melody Zarria-Samanamud

Michigan Tech Publications

While the grazing of livestock has occurred for millennia in the Andes, current sustainability debates center on concerns with co-managing climate change and pastoralism. These discussions have special resonance in places protected by the state for biodiversity, scenery, and sustainable and traditional land uses, such as those found in protected areas and biosphere reserves. For this article, we integrate data from a social-ecological research project on the land use systems that affect high-elevation ecosystems in Peru’s Huascarán National Park, with special emphasis on the wetlands. We used land cover and land use data and insights from interactions with pastoralists to …

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Health Risk Assessments Of Heavy Metal Concentrations Via Consumption Of An Invasive Species, Carassius Gibelio, From Two Large Freshwater Lakes Of Türkiye, Duygu Ceren Çağlan Kaya Nov 2023

Health Risk Assessments Of Heavy Metal Concentrations Via Consumption Of An Invasive Species, Carassius Gibelio, From Two Large Freshwater Lakes Of Türkiye, Duygu Ceren Çağlan Kaya

Turkish Journal of Zoology

Heavy metal toxicity is a significant threat to human health and the environment. Contamination of the food chain with heavy metals in water sources may impact the health of consumers adversely. This study aimed to determine the concentrations of Pb, Cd, Cr, Cu, and Zn in the invasive fish species Carassius gibelio inhabiting two important lakes in Türkiye: Lake Beyşehir and Lake Eğirdir, from the Lake District Region and assess any health risks posed by the consumption of these species. For this purpose, C. gibelio species were obtained from two lakes in dry and rainy seasons and heavy metal concentrations …

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Modeling The Long-Distance Effects Of Predation, Henry Ogu Nov 2023

Modeling The Long-Distance Effects Of Predation, Henry Ogu

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

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Using Machine Learning To Measure Changes In Immunity Due To Climate Change In The Fall Armyworm, Spodoptera Frugiperda, Nathaniel T. Haulk Nov 2023

Using Machine Learning To Measure Changes In Immunity Due To Climate Change In The Fall Armyworm, Spodoptera Frugiperda, Nathaniel T. Haulk

LSU Master's Theses

Object detection is a recent development that allows for the detection of multiple objects in photographs. Numerous machine learning algorithms have been developed for object detection. Here we sought to determine which algorithm performed best when relating to an organism's health and immunological response. The fall armyworm (Spodoptera frugiperda) is a major agricultural pest causing millions of dollars in damage to farmlands across the globe. With their recent spread into Africa and Asia, the need for understanding how best to control population outbreaks via biocontrol has increased. While viruses are a major biocontrol agent for controlling insect pests, we …

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Population Structure And Genetic Diversity Of The Socotra Cormorant (Phalacrocorax Nigrogularis), Noura Mabkhout Almansoori Nov 2023

Population Structure And Genetic Diversity Of The Socotra Cormorant (Phalacrocorax Nigrogularis), Noura Mabkhout Almansoori

Theses

The Socotra cormorants (Phalacrocorax nigrogularis) are regional endemic seabirds restricted to the Arabian Gulf, Gulf of Oman, and the Arabian Sea. This species is classified as vulnerable by the IUCN Red List. However, no population genetic study has been conducted on P. nigrogularis in their range, and population structure, gene flow and connectivity between colonies is unknown. Likewise, genetic diversity of this species has not yet been characterized. Thus, the aim of this thesis was to fill these gaps by inferring population structure, assessing gene flow and genetic diversity of Socotra cormorant colonies in their known distribution range. …

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D-Shaped Nematode Eggs In The Feces Of Rangifer Tarandus: A Story In Pictures, Olga A. Loginova Oct 2023

D-Shaped Nematode Eggs In The Feces Of Rangifer Tarandus: A Story In Pictures, Olga A. Loginova

MANTER: Journal of Parasite Biodiversity

D-shaped nematode eggs in the feces of Rangifer tarandus are expected to be oxyurid nematodes (Nemata: Oxyurida) of the genus Skrjabinema. The species S. tarandi is considered species-specific for this host. There is no consensus regarding the cross-infection of reindeer and sheep with S. ovis and S. tarandi. The drawings proposed by descriptors complicate differential diagnostics. Micrographs of S. tarandi eggs obtained via light microscopy and scanning electron microscopy as well as photographs of S. ovis eggs and drawings made on their basis are proposed to confidently distinguish between representatives of these two species, taking into account morphometric data. Thus, …

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The Effects Of Accessory Blood Flow Restriction Training On Muscle Size And Strength In Division Iii Soccer Athletes: A Preliminary Ecological Study, Kaitlyn Judd, Christian Morales, Megan White, Kate Wilkie, Justin Faller, Stephen Ives Oct 2023

The Effects Of Accessory Blood Flow Restriction Training On Muscle Size And Strength In Division Iii Soccer Athletes: A Preliminary Ecological Study, Kaitlyn Judd, Christian Morales, Megan White, Kate Wilkie, Justin Faller, Stephen Ives

International Journal of Exercise Science

International Journal of Exercise Science 16(6): 1244-1256, 2023. Blood flow restriction training (BFRT) uses occlusion during low-intensity resistance training (< 50% of 1-repetition maximum, 1RM) to reduce arterial blood flow and venous return, imposing greater metabolic stress but similar muscular hypertrophy and strength gains as high-intensity resistance training (HIRT). However, no study, to date, has incorporated BFRT in a collegiate strength and conditioning setting to assess ecological validity. We aimed to investigate the effects of adding 6-weeks of accessory BFRT or HIRT to NCAA Division III soccer players prescribed resistance training regimen on muscle strength and size. Male and female (n = 17) athletes were randomly assigned to complete biceps curls 2x/week under BFRT or control (HIRT), following regularly scheduled strength training. Bicep strength (1RM) and circumference (BC) were assessed at weeks 0, 3, and 6 (men only). In men, for BC no significant interaction of condition x time was observed (p = 0.861), though condition (BFRT vs Control, p = 0.025) and time (p = 0.024) were significant. For 1RM, there was no significant interaction of condition …

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Analyzing Human - Nonhuman Primate Conflict Mitigation Techniques In Mto Wa Mbu, Northern Tanzania, Lily Adams Oct 2023

Analyzing Human - Nonhuman Primate Conflict Mitigation Techniques In Mto Wa Mbu, Northern Tanzania, Lily Adams

Independent Study Project (ISP) Collection

Human – non-human primate conflict is particularly crucial due to primates’ high capacity to live among human populations. The study to analyze Human - Nonhuman Primate Conflict Mitigation Techniques, was carried in November 2023 at Mto wa Mbu, Northern Tanzania. To analyze techniques currently being used to mitigate human – non-human primate conflict, this study collected data through semi-structured interviews. Over 87% (n=35) of respondents used multiple mitigation techniques simultaneously. 80% of respondents (n=32) reported using projectiles to ward off foraging primates, 75% of respondents (n=30) reported using loud noises (made either by the voice/body or by manipulating noisemakers), 67.5% …

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