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Articles 44461 - 44490 of 255950

Full-Text Articles in Life Sciences

Hibernation Behavior And Winter Feeding Of Northern Myotis In Coastal Populations After White-Nose Syndrome Invasion, Casey Jo Pendergast Jan 2023

Hibernation Behavior And Winter Feeding Of Northern Myotis In Coastal Populations After White-Nose Syndrome Invasion, Casey Jo Pendergast

Legacy Theses & Dissertations (2009 - 2024)

The northern myotis (Myotis septentrionalis) is a bat species suffering massive population declines due to the effects of white nose syndrome, a severe and pervasive disease threatening extinction across the species range. A remnant population of northern myotis capable of persisting despite infection with the disease has been identified across three coastal islands: Long Island, NY; Martha’s Vineyard, MA; and Nantucket, MA. This study looked to uncover the mechanisms for survival by characterizing activity of northern myotis and potential prey species throughout the hibernation season. Bat activity was monitored during the 2017/18, 2018/19, and 2019/20 winter seasons at known foraging …

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Lead And Cadmium Exposure Alters Respiration And Shell Bioadhesive Matrix In A Single-Chambered, Agglutinated Foraminiferan Protist: Implications For Marine Biomonitoring, Amanda L. Andreas Jan 2023

Lead And Cadmium Exposure Alters Respiration And Shell Bioadhesive Matrix In A Single-Chambered, Agglutinated Foraminiferan Protist: Implications For Marine Biomonitoring, Amanda L. Andreas

Legacy Theses & Dissertations (2009 - 2024)

Heavy metal exposure from anthropogenic pollutants negatively affects many marine organisms, including foraminiferan protists. Foraminifera are often used as bioindicators in benthic environments due to their sensitivity to environmental stress. Primary research has commonly focused on how heavy metals affect foraminiferal assemblages, distribution, ultrastructure, and shell morphology. Multi-chambered calcareous and agglutinated forams are the primary focus of such ecotoxicological studies; however, less is known about how heavy metals affect the physiology and shell microarchitecture of monothalamid agglutinated species. The research reported here represents an interdisciplinary environmental toxicology approach to study the exposure effects of heavy metal toxicants, lead (Pb) and …

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Olfaction And Puberty : The Study Of The Development And Migration Of The Gnrh-1ns And Their Migratory Partners The Olfactory Unsheathing Cells, Ed Zandro Moina Taroc Jan 2023

Olfaction And Puberty : The Study Of The Development And Migration Of The Gnrh-1ns And Their Migratory Partners The Olfactory Unsheathing Cells, Ed Zandro Moina Taroc

Legacy Theses & Dissertations (2009 - 2024)

Sexual development and puberty are two key developmental processes that are crucial for the propagation and evolution of species. The hormone Gonadotropin releasing hormone-1 (GnRH-1) is a key hormone in regulating both processes by controlling the hormonal Hypothalamic-Pituitary-Gonadal axis in the release of sex hormones (Testosterone, Estrogen, Progesterone) at the correct developmental time points initiate puberty and progress sexual development. A subset of hypothalamic neurons known as the GnRH-1 neurons (GnRH-1ns) release GnRH-1 in a pulsatile fashion during embryonic and post-natal development to specifically regulate these processes. The GnRH-1ns are an interesting group of neurons because they are formed in …

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Endothelial And Stromal Cell Contributions To Salivary Gland Injury And Repair, Amber Altrieth Jan 2023

Endothelial And Stromal Cell Contributions To Salivary Gland Injury And Repair, Amber Altrieth

Legacy Theses & Dissertations (2009 - 2024)

Injury and disease can contribute to excess accumulation of extracellular matrix, which if persistent, results in fibrosis, impeding proper organ function. The salivary gland can develop fibrosis following irradiation treatment for cancer therapy, Sjögren’s Disease, and other causes; however, it is unclear which stromal cells and signals participate in injury responses and disease progression and which cells may be important for restoring proper organ function. Two stromal populations that are implicated in injury and repair are the endothelial cells, lining the inner surface of blood vessels, and pericytes, that wrap around the vessels. One stromal pericyte population, expressing the transcription …

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Regulatory Mechanisms In The Drosophila Germline, Shane Breznak Jan 2023

Regulatory Mechanisms In The Drosophila Germline, Shane Breznak

Legacy Theses & Dissertations (2009 - 2024)

To launch the next generation, all sexually reproducing animals must undergo the process of producing mature eggs and sperm. This process is known as gametogenesis. During gametogenesis key developmental checkpoints are met to ensure proper egg and sperm production. Model organisms, such as Drosophila melanogaster, have been used to study gametogenesis to gain insight into the conserved mechanisms that can be attributed to human infertility and disease due to the availability of genetic tools, quick life cycle and the conservation of regulatory mechanisms. During Drosophila oogenesis there are many key developmental transitions that must be completed to produce a fully …

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Refugia From White-Nose Syndrome: Ecology And Behavior Of Northern Myotis Coastal Populations, Samantha Hoff Jan 2023

Refugia From White-Nose Syndrome: Ecology And Behavior Of Northern Myotis Coastal Populations, Samantha Hoff

Legacy Theses & Dissertations (2009 - 2024)

Recent increases in anthropogenic environmental change have been directly linked to the global loss of biodiversity and are a primary driver of disease emergence in wildlife populations. Infectious diseases interact with other threats to cause population declines and changes in community composition, potentially resulting in local or global extinctions. Yet, outcomes are variable across the landscape, leading some host populations to persist at low numbers. One of the biggest challenges in conserving species threatened by disease is determining whether persisting populations can remain viable into the future once they have been driven to low abundance. White-nose syndrome (WNS) is one …

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Understanding The Role Of Peroxiredoxin Iv In Colorectal Cancer Development, Pratik Thapa Jan 2023

Understanding The Role Of Peroxiredoxin Iv In Colorectal Cancer Development, Pratik Thapa

Theses and Dissertations--Toxicology and Cancer Biology

Reactive oxygen species (ROS) are oxygen-containing free radicals and/or molecules that are more reactive than O2. ROS such as hydroxyl radical (•OH) and hydrogen peroxide (H2O2) are produced naturally in the body as a result of reactions such as aerobic respiration and oxidative protein folding. ROS undergo reduction-oxidation (redox) reactions and mediate cell signaling. Accumulation of excessive ROS can damage DNA, RNA, protein and lipids. Antioxidants are enzymes and small molecules that react with ROS to modulate redox signaling and to prevent and repair oxidative damage. Examples of antioxidants include glutathione, thioredoxin, superoxide dismutase, …

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Targeting Ezh2 To Improve Outcomes Of Lung Squamous Cell Carcinoma, Tanner Ducote Jan 2023

Targeting Ezh2 To Improve Outcomes Of Lung Squamous Cell Carcinoma, Tanner Ducote

Theses and Dissertations--Toxicology and Cancer Biology

Only 20% of patients diagnosed with lung squamous cell carcinoma (LSCC) respond to immunotherapy. Anti-PD1 immunotherapy is most commonly prescribed to these patients; however, most will become refractory. It is important to understand the mechanisms underlying this problem to increase durability and survival. Building upon the work of other groups, our lab has demonstrated that the inhibition of the histone methyltransferase, EZH2, is crucial to maintaining an immunologically responsive microenvironment. Based on our data, we hypothesize that combining EZH2 inhibitors with anti-PD1 therapy will increase response and durability. To study non-small cell lung cancers (NSLC) our lab uses a variety …

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Metabolic Engineering Of Escherichia Coli For N-Acetyl-Glucosamine Production, Anica Tasnim Protity Jan 2023

Metabolic Engineering Of Escherichia Coli For N-Acetyl-Glucosamine Production, Anica Tasnim Protity

Graduate Research Theses & Dissertations

Glucosamine (GlcN) and GlcN-based supplements, such as N-acetyl-glucosamine (GlcNAc), are commonly used by osteoarthritis patients to relieve pain and maintain the health of bone joints. However, the current production methods for GlcN-based products are not eco-friendly and pose risks to individuals with shrimp allergies. Microbial cell-based systems have been explored to address these issues as an eco-friendly alternative for GlcN and GlcNAc production. This study focused on developing an Escherichia coli (E. coli) strain for GlcNAc fermentation. E. coli has an endogenous pathway for peptidoglycan biosynthesis involving GlcNAc-1-P. However, altering this pathway could affect cell growth and integrity. Therefore, two …

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Foraging Behavior In The Eastern Subterranean Termite, Reticulitermes Flavipes (Kollar) (Isoptera: Rhinotermitidae), Anugerah Fajar Jan 2023

Foraging Behavior In The Eastern Subterranean Termite, Reticulitermes Flavipes (Kollar) (Isoptera: Rhinotermitidae), Anugerah Fajar

Theses and Dissertations--Entomology

Foraging is essential for survival, but it can be unpredictably dangerous due to organismal interactions like competition and predation to various environmental factors. Animals have come up with strategies to safeguard foraging. Social insects, with their elaborate division of labor, have developed sophisticated systems of foraging task allocation that allow them to capitalize resources beyond their competitors. In this thesis, I delve into the subjects of foraging behavior, allocation strategies, and the genetic basis of foraging in the eastern subterranean termite, Reticulitermes flavipes, the most widely distributed termite species in North America and one of the most economically important …

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Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors Jan 2023

Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

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Screening Of Sunflower (Helianthus Annuus L.) Cultivars/Hybrids For Heat Stress Tolerance Using Growth And Physiobiochemical Indicators, Mobeen ., Abida Parveen, Abdullah Ahmed Al-Ghamdi, Fahad M. Al-Hemaid, Mohamed Ragab Abdelgawwad Jan 2023

Screening Of Sunflower (Helianthus Annuus L.) Cultivars/Hybrids For Heat Stress Tolerance Using Growth And Physiobiochemical Indicators, Mobeen ., Abida Parveen, Abdullah Ahmed Al-Ghamdi, Fahad M. Al-Hemaid, Mohamed Ragab Abdelgawwad

Turkish Journal of Agriculture and Forestry

High temperatures may cause scorching of the twigs and leaves along with visual symptoms of sunburn, leaf senescence, growth inhibition, and ultimately decreased plant growth and biomass. Sunflower (Helianthus annuus L.) is one of the important oil seed crops and it potentially fits in agricultural system and oil production sector of Pakistan. Hence, it is important to get the best variety which may able to tolerate high temperatures in hot and humid environments. For this purpose, we have conducted the present study using ten different cultivars of (Hysin-33, T-40, H-OI, Hysin-39, Suncross, Gulshin, FH-825, FH-797, FH-784, AGSUN-5270) of H. …

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Chemical Composition, Biological Activities, And Surface Tension Properties Of Melissa Officinalis L. Essential Oil, Özgür Çelebi̇, Hafize Fidan, Ivan Iliev, Nadezhda Petkova, Ivayla Dincheva, Vanya Gandova, Stanko Stankov, Albena Stoyanova Jan 2023

Chemical Composition, Biological Activities, And Surface Tension Properties Of Melissa Officinalis L. Essential Oil, Özgür Çelebi̇, Hafize Fidan, Ivan Iliev, Nadezhda Petkova, Ivayla Dincheva, Vanya Gandova, Stanko Stankov, Albena Stoyanova

Turkish Journal of Agriculture and Forestry

Lemon balm (Melissa officinalis L.) is a plant of the family Lamiaceae. The present study aimed to determine the chemical composition of the lemon balm essential oil grown in Northeastern Bulgaria, to perform a comparative analysis of its antimicrobial activity with that of citral, and to determine its surface tension properties. The main compounds of the essential oil (concentration above 3%) were: ß-caryophyllene (20.45%), geranial (19.74%), neral (15.81%), germacrene D (11.50%), (R)-(+)-citronellal (3.07%), and geranyl acetate (3.04%). The antibacterial activity of the essential oil was weak against the tested gram-negative and gram-positive bacteria. Exceptions were observed for Listeria monocytogenes …

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Effect Of Postharvest Spermidine Treatments On Quality And Biochemical Properties Of Nectarine Fruits, Erdal Orman Jan 2023

Effect Of Postharvest Spermidine Treatments On Quality And Biochemical Properties Of Nectarine Fruits, Erdal Orman

Turkish Journal of Agriculture and Forestry

In this study, the effect of spermidine (SP) treatments at different doses after harvest on the changes in the pomological and biochemical contents of nectarine fruits was determined. The fruits were placed in cold storage (4 ± 0.5 °C and 90 ± 5% RH) for 30 days. Specific organic acids and phenolic compounds from biochemical compounds were analyzed by HPLC device. Weight loss and decay values, which are quality criteria of nectarine fruits, increased during storage compared to the harvest period. In this study, 1.0 mM SP application was found to be more successful in the preservation of visual quality …

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Antioxidant, Antidiabetic, And Antihypertensive Effects Of Peptides From Some Quercus Species, Muhammed Yusuf Çağlar, Muhammet Arici Jan 2023

Antioxidant, Antidiabetic, And Antihypertensive Effects Of Peptides From Some Quercus Species, Muhammed Yusuf Çağlar, Muhammet Arici

Turkish Journal of Agriculture and Forestry

In the present study, the antihypertensive, antidiabetic, and antioxidant properties of oak peptides were determined in vitro. For this purpose, samples from most common oak species (Quercus coccifera, Quercus ilex, and Quercus cerris) were collected, the proteins were extracted and the bioactive properties of 48 different peptide fractions were monitored using a fast protein liquid chromatography. The results showed that acorn peptides had no remarkable antioxidant or antihypertensive effects. Comparing the bioactive peptides of all oak species, the peptides of Q. coccifera generally had higher DPP-IV inhibition activity than those of Q. cerris and Q. ilex. …

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Artificial Intelligence As An Alternative Modelling Strategy For Reliable Height-Diameter Predictions Of Mixed-Oaks Species, Maria J. Diamantopoulou, Ramazan Özçeli̇k, Burak Koparan, Onur Alkan Jan 2023

Artificial Intelligence As An Alternative Modelling Strategy For Reliable Height-Diameter Predictions Of Mixed-Oaks Species, Maria J. Diamantopoulou, Ramazan Özçeli̇k, Burak Koparan, Onur Alkan

Turkish Journal of Agriculture and Forestry

Forest management and sustainable timber production rely on forest measurements that include tree height. However, the fieldwork needed for tree height measurements is time-consuming, and several times, hard to obtain. The solution to this problem is the construction of reliable height-diameter (h-d) models that can provide accurate tree height predictions. To this direction, a modified Gompertz model that included dominant height and diameter at breast height was used to predict tree height. In order to investigate the most promising modelling method, six alternative approaches were evaluated; these involved both regression and artificial intelligence techniques and produced the (i) …

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Origin, Distribution And Domestication Of The Carob Tree (Ceratonia Siliqua L.), Yassine Moustafa Mahdad, Semir Bechir Suheil Gaouar Jan 2023

Origin, Distribution And Domestication Of The Carob Tree (Ceratonia Siliqua L.), Yassine Moustafa Mahdad, Semir Bechir Suheil Gaouar

Turkish Journal of Botany

The carob tree, which is a member of the Fabaceae family, is an agrosilvopastoral tree whose pre-Mediterranean tropical origin appears well established on the basis of genetic, fossil and physiological data. C. siliqua has recently been successfully introduced from the Mediterranean basin to other parts of the world that have a Mediterranean climate. In terms of its domestication, there is paleobotanical, philological, ecological and historical evidence to suggest that the species was spread by people from Arabia, where it took refuge during the Ice Age, to Mesopotamia and then on to the western Mediterranean. This ?eastern refugium hypothesis? (ERH) postulates …

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Bioaccumulation Of Four Metals In The Same Genus Mosses (Barbula Hedw.) And Soil Pollution Assessment In An Abandoned Karst Bauxite Tailing Area, Dengfu Wang, Qimei Wu, Zhaohui Zhang Jan 2023

Bioaccumulation Of Four Metals In The Same Genus Mosses (Barbula Hedw.) And Soil Pollution Assessment In An Abandoned Karst Bauxite Tailing Area, Dengfu Wang, Qimei Wu, Zhaohui Zhang

Turkish Journal of Botany

Soil metal pollution is a concern in bauxite tailing areas. This study aimed to effectively screen plants with strong tolerance to metal contamination by analyzing the levels of metals in Barbula rigidula (Hedw.) Mild. (BR), Barbula indica (Hook.) Spreng. (BI), and Barbula vinealis Brid. (BV) and in soils. The contents of metals in mosses obtained from the bauxite tailing area followed the following order: Al > Fe > Zn > Cu. Furthermore, the levels of these metals were highest in BR, followed by BI and BV. However, concentrations of Al (12,220-87,080 mg/kg), Fe (8520-62,690 mg/kg), Cu (98.5-185.4 mg/kg), and Zn (208.2-352.6 mg/kg) in …

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A New Species Of Arrhenia (Agaricales, Hygrophoraceae) From Guizhou Province, China, Jing Wang, Huan Gao, Dong Mei Liu, Chun Ying Deng, Shao Qi Zhou Jan 2023

A New Species Of Arrhenia (Agaricales, Hygrophoraceae) From Guizhou Province, China, Jing Wang, Huan Gao, Dong Mei Liu, Chun Ying Deng, Shao Qi Zhou

Turkish Journal of Botany

Arrhenia nivea is a new bryophilous species of Arrhenia from a valley in southwestern China'a subtropical monsoon humid climate zone.The species is characterized by pure white basidiomata with an irregularly discoid to cupulate 1.5-4.5 mm diameter pileus, reduced hymenium, nonamyloid basidiospores, lack of cystidia, the presence of clamps, and no incrusted pigment of the pileipellic hyphae. Phylogenetic analysis using ITS sequence data confirmed that it arised from a pathway separate from other species of Arrhenia.

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Revision Of The Genus Nepeta L. (Lamiaceae) In Iraq, Tuncay Di̇rmenci̇, Ali̇ Haloob, Ferhat Celep, Shahina A. Ghazanfar Jan 2023

Revision Of The Genus Nepeta L. (Lamiaceae) In Iraq, Tuncay Di̇rmenci̇, Ali̇ Haloob, Ferhat Celep, Shahina A. Ghazanfar

Turkish Journal of Botany

This paper revises the genus Nepeta for the family Lamiaceae for the Flora of Iraq project. We describe a new species, Nepeta iraqensis, and four new records Nepeta congesta subsp. cryptantha, N. stricta, N. lamiifolia and N. iodantha for Iraq. Lectotypes for six taxa are selected and comments on complex species are given. In addition, two new synonyms are given here for the first time. In all, we describe with identification keys, 19 taxa, three of which are endemic to Iraq.

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The Effect Of Grafting On Pollen Fertility And Seed Production Of Diploid Interspecific Hybrid And Tetraploid Eggplant Genotypes, Sebahatti̇n Çürük, İlknur Külahlioğlu Çeği̇l Jan 2023

The Effect Of Grafting On Pollen Fertility And Seed Production Of Diploid Interspecific Hybrid And Tetraploid Eggplant Genotypes, Sebahatti̇n Çürük, İlknur Külahlioğlu Çeği̇l

Turkish Journal of Botany

Solanum melongena is susceptible to diverse diseases and parasites, in particular the wilts (bacterial, Fusarium and Verticillium), nematodes, and some insects. Solanum torvum is robust to Verticillium and some bacterial wilts and root-knot nematode. It was reported that interspecific hybrid plants originated out of the hybridization of these species were sterile. In our previous studies that have been carried out to overcome this interspecific hybridization barrier, only from Faselis F1 that was used as the female parent, many interspecific hybrid seeds were obtained and 9.07% of the seeds grew into plants in vitro. The percentage of pollen viability and germination …

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Tanacetum Isfahanicum (Compositae-Anthemideae), A New Species From Iran And Its Phylogenetic Position Based On Nrdna Its Data, Maryam Naderifar, Ali Sonboli, Shahrokh Kazempour Osaloo Jan 2023

Tanacetum Isfahanicum (Compositae-Anthemideae), A New Species From Iran And Its Phylogenetic Position Based On Nrdna Its Data, Maryam Naderifar, Ali Sonboli, Shahrokh Kazempour Osaloo

Turkish Journal of Botany

Tanacetum isfahanicum Sonboli and Naderifar (Compositae-Anthemideae) is described as a new species from Isfahan and Fars provinces of Iran. It belongs morphologically to Tanacetum sect Xanthoglossa and differs from its the closest relative, T. polycephalum, by shape of basal and cauline leaves, shape of capitula, length and width of involucre and color of achene ribs. The phylogenetic position of the new species within the genus Tanacetum is established based on nrDNA ITS sequences variation and its close relationship with T. polycephalum is corroborated.

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Diversity Of Endolichenic Fungi Within Lichen Genus Parmotrema From India, Jyotsna Chakarwarti, Sanjeeva Nayaka, Suchi Srivastava Jan 2023

Diversity Of Endolichenic Fungi Within Lichen Genus Parmotrema From India, Jyotsna Chakarwarti, Sanjeeva Nayaka, Suchi Srivastava

Turkish Journal of Botany

: The lichens serve as an ecological niche for a group of unexplored fungal species residing inside their thallus without causing any noticeable symptoms and such fungi are termed as endolichenic fungi. The objective of the current study is to check the endolichenic fungal diversity within lichen genus Parmotrema. The study resulted in a total of 450 endolichenic fungi (ELF) isolates from 15 species of Parmotrema. Out of these, 73 sporulating isolates were identified using ITS sequences which resulted in 47 species under 23 genera. The phylogenetic assemblage of the fungi comprised Sordariomycetes (84.50%), Dothideomycetes (5.63%), Eurotiomycetes (7.04%), Pezizomycetes (1.40%), …

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Ecological Quality Status Of The Turkish Coastal Waters By Using A Marine Macrophytic Biotic Index (Eei-C), Ergün Taşkin, İbrahi̇m Tan, Murat Çakir, Özge Sungur, Orki̇de Mi̇nareci̇, Ersi̇n Mi̇nareci̇, Hakan Atabay Jan 2023

Ecological Quality Status Of The Turkish Coastal Waters By Using A Marine Macrophytic Biotic Index (Eei-C), Ergün Taşkin, İbrahi̇m Tan, Murat Çakir, Özge Sungur, Orki̇de Mi̇nareci̇, Ersi̇n Mi̇nareci̇, Hakan Atabay

Turkish Journal of Botany

The present study includes the results of the second benthic macrophytes? monitoring period of a survey of ecological status from the Turkish coasts. The biotic index Ecological Evaluation Index (EEI-c) was used to assess the ecological status classes (ESC) and MA-LUSI the anthropogenic pressures. Sampling was made by the quadrat (20 × 20 cm) method, and the samples were collected from 93 sites in Turkish coastal waters between 2017 and 2019. In total, 240 taxa were found in the Turkish marine waters. Forty sites were classified into High ESC, 24 sites into Good, 12 sites into Moderate, 13 sites into …

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Sorghum Wrky Transcription Factor Sbwrky45 Enhanced Seed Germination Under Drought Stress In Transgenic Arabidopsis, Elamin Baillo, Muhammad Sajid Hanif, Ping Xu, Zhengbin Zhang Jan 2023

Sorghum Wrky Transcription Factor Sbwrky45 Enhanced Seed Germination Under Drought Stress In Transgenic Arabidopsis, Elamin Baillo, Muhammad Sajid Hanif, Ping Xu, Zhengbin Zhang

Turkish Journal of Botany

The WRKY transcription factors (TFs) family is an important family of plant-specific TFs, playing vital roles in various abiotic and biotic stress responses. WRKY TFs are gaining considerable attention due to their significant roles in stress responses. However, their functions in sorghum (Sorghum bicolor) are lagging behind. In this study, a WRKY gene designated as SbWRKY45 was isolated and characterized from sorghum. SbWRKY45, belonging to Group IIa, consists of one intron and two exons and encodes 430 amino acids. SbWRKY45 is located in chromosome 4. The cis-element prediction analysis showed that the promoter region of SbWRKY45 has several abiotic …

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Native Amphibian Toxin Reduces Invasive Crayfish Feeding With Potential Benefits To Stream Biodiversity, Gary M. Bucciarelli, Sierra J. Smith, Justin J. Choe, Phoebe D. Shin, Robert N. Fisher, Lee B. Kats Jan 2023

Native Amphibian Toxin Reduces Invasive Crayfish Feeding With Potential Benefits To Stream Biodiversity, Gary M. Bucciarelli, Sierra J. Smith, Justin J. Choe, Phoebe D. Shin, Robert N. Fisher, Lee B. Kats

All Faculty Open Access Publications

Background: Biodiversity is generally reduced when non-native species invade an ecosystem. Invasive crayfish, Procambarus clarkii, populate California freshwater streams, and in the Santa Monica Mountains (Los Angeles, USA), their introduction has led to trophic cascades due to omnivorous feeding behavior and a rapid rate of population growth. The native California newt, Taricha torosa, possesses a neurotoxin, tetrodotoxin (TTX), that affects freshwater animal behavior. Given P. clarkii has a limited evolutionary history with TTX, we hypothesized that TTX may affect crayfish feeding behaviors. To determine if TTX affects P. clarkii behavior, we measured cumulative movement and various feeding behaviors of P. …

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Climatic Stress Decreases Tick Survival But Increases Rate Of Host-Seeking Behavior, Caleb Nielebeck, Sang Hyo Kim, Antonio Pepe, Lucian Himes, Zachary Miller, Sophia Zummo, Mary Tang, Javier D. Monzón Jan 2023

Climatic Stress Decreases Tick Survival But Increases Rate Of Host-Seeking Behavior, Caleb Nielebeck, Sang Hyo Kim, Antonio Pepe, Lucian Himes, Zachary Miller, Sophia Zummo, Mary Tang, Javier D. Monzón

All Faculty Open Access Publications

Ticks are vectors of many diseases and are expanding in geographic distribution. However, how ticks will fare in their new environments, where they may experience stressful climatic conditions at the expansion front, remains unclear. Since there is a trade-off in ticks between behaviors that promote longevity and behaviors that promote reproduction, we hypothesized that extreme climatic stress reduces the survivorship of ticks but increases the frequency of tick host-seeking behavior, or questing. Here, we used a novel method to simulate climatic stress on individual ticks of three species—Amblyomma americanum, Dermacentor variabilis, and Ixodes scapularis—to evaluate their survival, physiology, and questing …

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Effect Of Temperature On Morphology Of The Cardiorespiratory System Of Striped Bass (Morone Saxatilis), Alley E. Permenter Jan 2023

Effect Of Temperature On Morphology Of The Cardiorespiratory System Of Striped Bass (Morone Saxatilis), Alley E. Permenter

Honors College Theses

Climate change and temperature are two very important topics for the coming future. As climate change projections estimate a 2-3°C increase in water temperatures by the end of the century, the habitats of many aquatic organisms will be affected in more ways than one. Temperature has proven to be an integral part of the driving force that causes physiological, behavioral, and ecological patterns in aquatic organisms. Striped bass (Morone saxatilis) and their responses to changes in water temperature have been a topic of interest due to the fact that the southern populations do not follow their northern counterparts …

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The Effects Of Warming Rate On The Thermal Tolerance Of A Southern Population Of Striped Bass (Morone Saxatilis), James Barrett Jan 2023

The Effects Of Warming Rate On The Thermal Tolerance Of A Southern Population Of Striped Bass (Morone Saxatilis), James Barrett

Honors College Theses

Climate change and global warming is an ever-growing concern for our environment and the survivability of the animals which inhabit it. With water temperatures expected to rise 2-3℃ in the next century, many aquatic organisms may be limited in their habitats based on their thermal tolerance (Lleras 2019). Southern populations of striped bass (Morone saxatilis) in the Southeastern United States could be some of the hardest hit by the effects of climate change due to their unusual life history as compared to the more northern populations of striped bass. These southern striped bass do not engage in coastal …

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Variation In Carapace Damage Within And Among Loggerhead Musk Turtle (Sternotherus Minor) Populations In Florida Spring-Fed Ecosystems, Joseph J. Pignatelli Iii, Katrina Campbell, Brian P. Butterfield, Gerald R. Johnston, Joseph C. Mitchell, Grover J. Brown, J. Brian Hauge, Andrew D. Walde, Eric C. Munscher Jan 2023

Variation In Carapace Damage Within And Among Loggerhead Musk Turtle (Sternotherus Minor) Populations In Florida Spring-Fed Ecosystems, Joseph J. Pignatelli Iii, Katrina Campbell, Brian P. Butterfield, Gerald R. Johnston, Joseph C. Mitchell, Grover J. Brown, J. Brian Hauge, Andrew D. Walde, Eric C. Munscher

Research, Publications & Creative Work

Damage to a turtle’s shell can provide evidence of past events such as vehicle collisions, disease, predator encounters, or even a behavioural interaction between members of the same species. Documenting shell damage as part of long-term mark and recapture studies enables researchers to determine population trends, intraspecific interactions and identify potential issues within turtle populations. This paper analyses shell damage in populations of the Loggerhead Musk Turtle (Sternotherus minor) (Agassiz, 1857). We examined carapace shell damage frequency and severity in 2701 individual S. minor (1468 males and 1233 females) captured in spring-fed habitats in one state preserve and five state …

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