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Articles 511 - 540 of 10539
Full-Text Articles in Animal Sciences
Effects Of Environmental Enrichments On Welfare And Hepatic Metabolic Regulation Of Broiler Chickens, Seong W. Kang, Karen D. Christensen, Michael T. Kidd, Sara K. Orlowski
Effects Of Environmental Enrichments On Welfare And Hepatic Metabolic Regulation Of Broiler Chickens, Seong W. Kang, Karen D. Christensen, Michael T. Kidd, Sara K. Orlowski
Poultry Science Faculty Publications and Presentations
The aims of this study were to find suitable environmental enrichment (EE) and evaluate the combined effect of two EEs, variable light intensity (VL) lighting program and EH, on mental health and hepatic metabolic regulation in commercial broilers. To find the advantageous EEs for broilers, three different EEs (board, hut, and ramp) were tested in trial 1. EEs were placed and the engagement of birds to EEs, dustbathing behavior, and daily physical activity were observed. Birds treated with huts showed higher engagement than the board- or ramp-treated birds (p < 0.05). The results of dustbathing behavior and daily physical activity indicated that the environmental hut (EH) is the most favorable enrichment for broilers. In the second trial, to test the effect of EHs on mental health and hepatic metabolic conditions, the brain and liver were sampled from the four treatment birds (20 lx_Con, 20 lx_Hut, VL_Con and VL_Hut) on day 42. The lower expression of TPH2 (tryptophan hydroxylase 2) of VL_Hut birds than those of VL_Con and 20 lx_Hut treated birds suggests the combining effect of EHs with the VL lighting program on the central serotonergic homeostasis of broilers. Reduced expressions of TH (tyrosine hydroxylase), GR (glucocorticoid receptor), BDNF (brain-derived neurotrophic factor) of VL_Hut treated birds compared to those of VL_Con and 20 lx_Hut birds suggest lower stress, stress susceptibility, and chronic social stress in VL_Hut treated birds. The expression of CPT1A (carnitine palmitoyl transferase 1) increased over three-fold in the liver of VL_Con birds compared to 20 lx_Con birds (p < 0.05). EHs treatment in VL birds (VL_Hut) significantly decreased CPT1A but not in 20 lx birds (20 lx_Hut). The expression of ACCα (acetyl-CoA carboxylase alpha) was significantly decreased in VL_Con birds compared to 20 lx_Con birds. There was no significant difference in the hepatic FBPase (fructose-1,6-bisphosphatase), GR, and 11β-HSD1 (11 β-hydroxysteroid dehydrogenease-1) expression between 20 lx_Con and VL_Con birds, but EHs significantly stimulated GR in 20 lx_Hut birds, and stimulated FBPase and 11β-HSD1 expression in the VL_Hut birds compared to 20 lx_Con birds, suggesting that the VL lighting program reduced fatty acid synthesis and increased fatty acid β-oxidation in the broilers’ liver and VL_Hut improved the hepatic de novo glucose production. Taken together, the results suggest that the stimulated voluntary activity by EHs in the light-enriched broiler house improved mental health and hepatic metabolic function of broilers and may indicate that the improved hepatic metabolic function contributes to efficient nutritional support for broilers.
Animal Conservation In St. Louis, Kate O'Sullivan
Animal Conservation In St. Louis, Kate O'Sullivan
Undergraduate Research Symposium
St. Louis has a multitude of organizations involved in the natural sciences. But how many of them actually contribute towards animal conservation? The St. Louis Zoo is an organization that focuses a lot of its effort on presentation, so how does that impact the funds that go towards actually saving the animals? I plan to dive into the different animal-based organizations in St. Louis and its surrounding areas, as well as discuss the positives and negatives of each organization. Furthermore, I will provide examples from several sources that I have been reviewing all year to support my claims. I plan …
A Survey Of Proximal Sensilla Associated With Denticle Subrows On Scorpion Pedipalp Fingers (Arachnida: Scorpiones), With Observations On Scorpion Fluorescence, Graeme Lowe, Victor Fet
A Survey Of Proximal Sensilla Associated With Denticle Subrows On Scorpion Pedipalp Fingers (Arachnida: Scorpiones), With Observations On Scorpion Fluorescence, Graeme Lowe, Victor Fet
Euscorpius
Sensilla on the dentate margins of scorpion pedipalp fingers, associated with denticle subrows or terminal denticles, were surveyed by white light, UV fluorescence and scanning electron microscopy. A total of 163 species belonging to 103 genera from 19 families were examined, representing all major phylogenetic lineages in the order. In the majority of species (141/152) with dentition organized into linear subrows of median denticles, a small socketed sensillum with a short shaft was observed at the proximal terminus of each subrow, termed a ‘subrow proximal sensilla’ (SPS). With few exceptions, SPS were non-fluorescent (‘Type N’) in buthids, and fluorescent (‘Type …
Dynamics Of Meiobenthic Fauna In A Tropical Sandy Coast (Chennai, Bay Of Bengal) With Reference To The Physicochemical Parameters, Madhavan Kesavaraj, Md Anwar Nawaz, Zahara Tasneem, Mohammed Asjad Shams Tabrez, Kareem Altaff, Mohamed Saquib Naveed
Dynamics Of Meiobenthic Fauna In A Tropical Sandy Coast (Chennai, Bay Of Bengal) With Reference To The Physicochemical Parameters, Madhavan Kesavaraj, Md Anwar Nawaz, Zahara Tasneem, Mohammed Asjad Shams Tabrez, Kareem Altaff, Mohamed Saquib Naveed
Turkish Journal of Zoology
The term “meiobenthos” refers to a diverse community of organisms inhabiting the interstitial spaces between sand grains retained on sieve sizes ranging between 38 to 500 μm. This study investigates the diversity and density of meiobenthic communities across five locations along the Chennai coast. We examined the dominant meiobenthic groups, with nematodes exhibiting high dominance at Napier station (288.6 ± 91.07 ind.10cm²) and harpacticoids dominating at Marina station (449.88 ± 264.3 ind.10cm²). To establish the relationship between meiobenthic organisms and environmental parameters, we analyzed seven physicochemical factors throughout the study period. The results indicate a negative correlation between ammonia, nitrate, …
Coral Cover Percentage And Health Condition In Tioman Island Marine Protected Area, Pahang, Malaysia, Nur Addawiah Mohamad Rodzi, Mohamed Fahmy Yusof, Zaidi Che Cob
Coral Cover Percentage And Health Condition In Tioman Island Marine Protected Area, Pahang, Malaysia, Nur Addawiah Mohamad Rodzi, Mohamed Fahmy Yusof, Zaidi Che Cob
Turkish Journal of Zoology
Continuous evaluation and monitoring of coral percentage cover and health status is critical for enhancing coral reef resilience management. The present study aimed to determine the coverage and coral status at important sites of Tioman Island Marine Park, which include Renggis Island, Tiong Point and Tekek. Surveillance video recording and in situ observation were carried out using the Coral Video Transect (CVT) method, which were analyzed using the Coral Point Count with Excel extension (CPCe) software. The overall health status for the study area was considered as “fair” with 41.61% ± 4.46% of mean live coral coverage. Among the stations …
An Update On The Phylogeny And Biogeographical History Of Rhipicephalus Sanguineus Complex, Olcay Heki̇moğlu
An Update On The Phylogeny And Biogeographical History Of Rhipicephalus Sanguineus Complex, Olcay Heki̇moğlu
Turkish Journal of Zoology
Rhipicephalus sanguineus complex is among the most studied hard tick species due to its worldwide distribution and its ability to transmit several pathogens. In this study, new local data and recent global findings were used to reevaluate the evolutionary history and phylogeny of the R. sanguineus complex. Seventy-nine samples of Rhipicephalus sp., which were collected from 32 different localities of Türkiye and one locality from Northern Cyprus, were analyzed using two mitochondrial (mt 16S rDNA, mt 12S rDNA) and one nuclear (ITS2) markers. The findings from phylogenetic trees indicate the presence of a third genetically distinct lineage of R. sanguineus …
The Range Dynamics Of A Cactophilic Drosophila Species Under Climate Change Scenarios, Banu Şebnem Önder, Utku Perktaş
The Range Dynamics Of A Cactophilic Drosophila Species Under Climate Change Scenarios, Banu Şebnem Önder, Utku Perktaş
Turkish Journal of Zoology
In this study, we evaluated the historical demography of a cactophilic Drosophila species (Drosophila gouveai) based on previously published mitochondrial DNA (mtDNA) data ecological niche modelling. We particularly aimed to test the effect of climate change on the historical demography of D. gouveai during the late Quaternary and the future of the species. For this, we also modelled its host cacti species in its distribution range to reach a more robust biogeographic conclusion. Our results indicate that D. gouveai was as sensitive to climate change as its hosts were. This species experienced an almost complete range shift, range contraction after …
Diet And Reproductive Outputs Of Common Barn-Owl (Tyto Alba) During The Common Vole (Microtus Arvalis) Outbreak And Crash, Gyozo F. Horvath, Adrienn Horváth
Diet And Reproductive Outputs Of Common Barn-Owl (Tyto Alba) During The Common Vole (Microtus Arvalis) Outbreak And Crash, Gyozo F. Horvath, Adrienn Horváth
Turkish Journal of Zoology
In this paper, we investigated the relationship between the breeding parameters and food composition of the common barnowl (Tyto alba) comparing the outbreak and subsequent crash periods of the common vole (Microtus arvalis) as the barn owl’s main prey. For the analyses, data of 29 (2014 outbreak: 6, 2016 crash: 8; 2019 outbreak: 7, 2021 crash: 7) breeding pairs of barn owls were selected. First, we examined the differences between the breeding parameters (clutch size, number of hatchlings and fledglings), the main and alternative prey taxa (common vole and Apodemus genus), the two derived indices (trophic level index, Microtinae/Murinae ratio) …
Vigilance Behavior Of Common Crane Grus Grus In Flocks During Spring, Summer, And Autumn, Kristina Kondrakova, Alexander Sharikov
Vigilance Behavior Of Common Crane Grus Grus In Flocks During Spring, Summer, And Autumn, Kristina Kondrakova, Alexander Sharikov
Turkish Journal of Zoology
Vigilance is a key behavioral element aimed to detect potential predators or rivals. In this study, we examined the vigilance levels of common cranes that exhibit flocking behavior during the spring, summer, and autumn seasons. We considered the influence of both social (age, presence of offspring, and flock size) and environmental factors (habitat type, time of day, and study period). Parents allocated more time for vigilance than nonparents and juveniles. The alertness of nonparents was lower in flocks of size 51–150 individuals compared to flocks under 50 and over 150 birds. Juveniles increased their vigilance at the end of the …
Can Wildlife Mortality On A Local Road Tell Something General? An Answer From A Protected Area In South-Western Romania, Diana Cupşa, Severus Daniel Covaciu Marcov, Robert Liviu Mihai Rengle, Amalia Raluca Dumbrava, Sára Ferenti, Adriana Petruş Vancea
Can Wildlife Mortality On A Local Road Tell Something General? An Answer From A Protected Area In South-Western Romania, Diana Cupşa, Severus Daniel Covaciu Marcov, Robert Liviu Mihai Rengle, Amalia Raluca Dumbrava, Sára Ferenti, Adriana Petruş Vancea
Turkish Journal of Zoology
Between June 2020 and May 2021, we studied the fauna road mortality on a recently asphalted local road in a protected area in southwestern Romania (Iron Gates Natural Park–IGNP). Despite our expectation of reduced road mortality because of the very low traffic (3.97 cars/hour), numerous animals belonging to a high number of taxa were killed. Animals were killed throughout the entire year, even amphibians in the winter months, which normally should hibernate in that period. Road mortality differences between periods and sectors were obvious. Plant assemblages near the road influence the composition and intensity of road mortality. Diverse habitats near …
On The Oviposition Of Homonota Aff. Darwinii In The Puna Region Of The Central Andes Of Argentina, Franco Valdez Ovallez, Rodrigo Gómez Alés, Rodrigo Nieva Cocilio, Tomás Martínez, Juan Carlos Acosta, José Villavicencio, Graciela Blanco
On The Oviposition Of Homonota Aff. Darwinii In The Puna Region Of The Central Andes Of Argentina, Franco Valdez Ovallez, Rodrigo Gómez Alés, Rodrigo Nieva Cocilio, Tomás Martínez, Juan Carlos Acosta, José Villavicencio, Graciela Blanco
Turkish Journal of Zoology
Communal nest egg-laying refers to females laying their eggs with those of their conspecifics under or within artificial or natural structures. Homonota aff. darwinii is a recently discovered species that has not yet been formally described. The objective of this work is to characterise the oviposition of this species in the Puna region in the Central Andes of Argentina. We recorded the type and surface of the rocks where the eggs were laid, the temperature of the substrate, and the temperature of the rock surface facing the substrate. In addition, we recorded the daily temperature variation that a randomly selected …
The Association Between Clai Polymorphism And Hygienic Behavior In Apis Mellifera, İnci̇ Şahi̇n Negi̇ş, Mustafa Ki̇bar, İbrahi̇m Ayteki̇n
The Association Between Clai Polymorphism And Hygienic Behavior In Apis Mellifera, İnci̇ Şahi̇n Negi̇ş, Mustafa Ki̇bar, İbrahi̇m Ayteki̇n
Turkish Journal of Zoology
Hygienic behavior represents one of the most prominent disease resistance mechanisms developed by honeybees. This behavior is known to be influenced by the genotype and environmental factors. Therefore, this study aimed to investigate the effect of SNP-8 polymorphism and environmental factors on hygienic behavior in different Apis mellifera breeds. A total of fourteen colonies and 148 bees from seven different bee breeds were used for the Pin-killed Brood Assay (PKB) test and PCR-RFLP analysis, respectively. The PKB assay revealed a wide range of hygienic behavior, spanning from 68% to 100% across the fourteen colonies. The frequencies of the H (High) …
Microhabitat Selection Of Adult Female Eastern Diamondback Rattlesnakes (Crotalus Adamanteus) In The Carolinas, Matthew Gacheny
Microhabitat Selection Of Adult Female Eastern Diamondback Rattlesnakes (Crotalus Adamanteus) In The Carolinas, Matthew Gacheny
Theses, Dissertations and Capstones
Reptiles rely on environmental conditions to regulate body temperature using behavioral strategies to meet basic life history needs. Viviparous squamates use thermoregulatory behaviors to meet energetic requirements for vitellogenesis and gestation, which carry considerable energetic costs and must balance with maintenance and survival. Embryonic development is often optimized in a narrower temperature range than the mother’s preferred temperature, creating an intergenerational conflict that should be addressed with maternal microhabitat selection. Field-based studies are needed to understand the link between the thermal biology of reptiles, their reproduction, and implications for population viability. With a use-availability logistic regression framework, I examined thermal …
Complexities Of Consistent Individual Behavioral Differences In Effective Wildlife Management, Nathalie R. Sommer
Complexities Of Consistent Individual Behavioral Differences In Effective Wildlife Management, Nathalie R. Sommer
Animal Sentience
The study of animal personality, or consistent individual behavioral differences, has faced numerous challenges since its inception, including terminological disputes, labor-intensive methodologies, and notable retractions. This commentary explores the mechanisms behind personality traits, questioning the link between personality and sentience, and highlights the bias towards megafauna in wildlife management. It underscores the ecological and ethical significance of considering arthropod personalities and the complexities of integrating personality into wildlife reintroductions. Caution is advised in generalizing personality effects, and the limitations of current measurement techniques are discussed, suggesting that personality traits should be one of many factors in comprehensive management strategies.
Patterns Of Genetic Structure In Spiders Beetles, Naiya Sims
Patterns Of Genetic Structure In Spiders Beetles, Naiya Sims
Mahurin Honors College Capstone Experience/Thesis Projects
Spider beetles are a poorly known group of North American beetles in the family Ptinidae. Protection of biodiversity requires knowledge of species- and population-level distinctiveness, so data regarding genetic structure of spider beetles can shed light on conservation priorities. Spider beetles in the genus, Coleotestudus, are distributed broadly in the southwestern US. Given their small size and lack of flight, it is presumed that the dispersal capability of Coleotestudus is limited, leading to strong population structure on a small spatial scale. We used a three-enzyme restriction-site-associated DNA sequencing (3RAD) strategy to identify single nucleotide polymorphisms (SNPs) throughout the genome …
Environmental Biology Masters Capstone, Antonio Gonzalez-Pita
Environmental Biology Masters Capstone, Antonio Gonzalez-Pita
Regis University Student Publications (comprehensive collection)
Human wildlife interactions (HWI) pose a complex challenge for wildlife managers. Human encroachment into wildlife habitat and the growing number of outdoor recreationists are increasing the frequency of contact and conflict, especially in regions such as the Front Range of Colorado. Geographic information systems (GIS), which use a combination of remote sensing and environmental survey data, allow for predictive spatial analyses of where human wildlife interactions are likely to occur. I used publicly reported observations of moose to create spatial predictive maps in a species distribution model framework. Slope and elevation were shown to be the strongest predictors of HWI, …
The Protective Role Of Melanin Within The Teleost Inner Ear, Gabriel Heckerman
The Protective Role Of Melanin Within The Teleost Inner Ear, Gabriel Heckerman
Mahurin Honors College Capstone Experience/Thesis Projects
Melanin is the dark pigment responsible for influencing the color of bodily structures, and it is variably present throughout human and animal tissue. Melanin is also found within the mammalian inner ear, and it has been observed that a lack of melanin is associated with greater susceptibility to sensorineural hearing loss. In this study, melanin levels of the inner ears of different color morphs of the fish species Poecilia latipinna and Cyprinus carpio were measured and the potential protective role of that melanin from acoustical stress was examined. Previous research showed that black morphs of both species exhibited less noise-induced …
How Does A Global Climate Cycle Affect The Reproductive Output Of A Neotropical Migratory Bird?, Abby K. Bressette, Emma Cummings, Daniel Albrecht-Mallinger, Lesley Bulluck
How Does A Global Climate Cycle Affect The Reproductive Output Of A Neotropical Migratory Bird?, Abby K. Bressette, Emma Cummings, Daniel Albrecht-Mallinger, Lesley Bulluck
UROP Posters
El-Niño Southern Oscillation (ENSO) causes regional changes in climate and has been found to have varying effects on the survival, fecundity, and recruitment of migratory songbirds. This study seeks to better understand the effect of ENSO on the fecundity of Virginia-breeding Prothonotary warbler (Protonotaria citrea; PROW), a neotropical migratory songbird. PROW breed in the Eastern United States and spend the non-breeding season primarily in Panama and Colombia. Ongoing research in Virginia has found a positive relationship between spring precipitation and predicted number of PROW fledgelings during La Niña, but the opposite during El Niño. To better understand this relationship, we …
Incorporating Sex-Diverse And Gender-Inclusive Perspectives In Higher Education Biology Courses, Breanne N. Harris, A Kelsey Lewis, Sam L. Sharpe, Teri J. Orr, Christopher T. Martine, Chloe C. Josefson
Incorporating Sex-Diverse And Gender-Inclusive Perspectives In Higher Education Biology Courses, Breanne N. Harris, A Kelsey Lewis, Sam L. Sharpe, Teri J. Orr, Christopher T. Martine, Chloe C. Josefson
Faculty Journal Articles
Inclusive teaching is teaching in a way that reaches all students in the classroom; this is beneficial for everyone, particularly for those with minoritized identities. Instructors play a critical role in scaffolding how students are exposed to and learn science content in the classroom. In this manuscript, we discuss how biology instructors can make their classrooms more inclusive with regard to sex and gender diversity content. Many topics in biology are based on androcentric, heteronormative, and oppressive framing, even though those lenses are more reflective of our own history and culture than they are of the diversity we see in …
The Morphological Evolution Of The Inner Ear In Lacertoidea (Squamata), Cristian Hernandez
The Morphological Evolution Of The Inner Ear In Lacertoidea (Squamata), Cristian Hernandez
Biology Dissertations - Archive
The popularization of high-resolution computed tomography(HRCT) has produced a revolution in the field of comparative anatomy. This technology allows us to reach a level of morphological detail in our observations that has never been possible previously. Now we can perform digital dissections isolating structures of interest such as individual bones, soft tissue organs, and even generate 3D models of body cavities (endocasts) such as the braincase and inner ear. Encompassed with the progress of the HRCT, 3D geometric morphometrics have emerged as a common tool to address morphological questions in a statistical context that outperforms the traditional 2D geometric morphometrics. …
Trends In Monitoring Of Australia’S Threatened Birds (1990–2020): Much Improved But Still Inadequate, Simon J. Verdon, Robert A. Davis, Ayesha Tulloch, Sarah M. Legge, David M. Watson, John C. Z. Woinarski, G. Barry Baker, Joris Driessen, Hayley M. Geyle, Hugh Possingham, Stephen T. Garnett
Trends In Monitoring Of Australia’S Threatened Birds (1990–2020): Much Improved But Still Inadequate, Simon J. Verdon, Robert A. Davis, Ayesha Tulloch, Sarah M. Legge, David M. Watson, John C. Z. Woinarski, G. Barry Baker, Joris Driessen, Hayley M. Geyle, Hugh Possingham, Stephen T. Garnett
Research outputs 2022 to 2026
Monitoring is vital to conservation, enabling conservation scientists to detect population declines, identify threats and measure the effectiveness of interventions. However, not all threatened taxa are monitored, monitoring quality is variable, and the various components of monitoring are likely to differ in their rates of improvement over time. We assessed the presence of monitoring and monitoring quality, using a range of metrics, for all Australia’s threatened bird taxa from 1990 to 2020 (four assessments spanning 30 years). We used our assessments to understand decadal trends in the number of taxa monitored; monitoring quality; and the groups that conduct monitoring. The …
แหล่งที่อยู่และแบบจำลองการกระจายของจิ้งเหลนภูเขาสกุล Sphenomorphus Fitzinger, 1843 ในอุทยานแห่งชาติดอยภูคา จังหวัดน่าน, ธนกฤต สัมพันธ์แพ
แหล่งที่อยู่และแบบจำลองการกระจายของจิ้งเหลนภูเขาสกุล Sphenomorphus Fitzinger, 1843 ในอุทยานแห่งชาติดอยภูคา จังหวัดน่าน, ธนกฤต สัมพันธ์แพ
Chulalongkorn University Theses and Dissertations (Chula ETD)
จิ้งเหลนภูเขาในสกุล Sphenomorphus Fitzinger, 1829 เป็นจิ้งเหลนที่มีความหลากหลายทางชนิดและมีพฤติกรรมตามธรรมชาติที่มักหลบซ่อนตัว จึงทำให้จิ้งเหลนสกุลนี้หลายชนิดยังขาดข้อมูลแหล่งที่อยู่และข้อมูลทางภูมิศาสตร์ โดยเฉพาะชนิดที่อาศัยอยู่ในพื้นที่ภูเขาสูงในทางภาคเหนือ นอกจากในอุทยานแห่งชาติดอยภูคา จังหวัดน่าน พบจิ้งเหลนภูเขา 3 ชนิด ได้แก่ จิ้งเหลนภูเขาเกล็ดเรียบ จิ้งเหลนภูเขาอินเดีย และจิ้งเหลนภูเขาแกรนดิสัน แต่อย่างไรก็ตามข้อมูลแหล่งที่อยู่และการศึกษาขอบเขตการกระจายของจิ้งเหลนเหล่านี้ยังไม่ชัดเจน ดังนั้นงานวิจัยนี้จึงมีวัตถุประสงค์เพื่อศึกษาแหล่งที่อยู่ของจิ้งเหลนภูเขาในอุทยานแห่งชาติดอยภูคาและประเมินภูมิศาสตร์การกระจายโดยใช้แบบจำลองการกระจายของชนิด (species distribution modeling; SDM) การสำรวจในภาคสนามใช้วิธีสำรวจแบบพบเห็นตัวร่วมกับการกำหนดเส้นสำรวจ ข้อมูลแหล่งที่อยู่และข้อมูลปัจจัยสภาพแวดล้อมนำมาวิเคราะห์ด้วยการทดสอบไคสแควร์และการวิเคราะห์องค์ประกอบหลัก จากนั้นนำข้อมูลพิกัด GPS จากการสำรวจภาคสนาม ข้อมูลตัวอย่างอ้างอิงในพิพิธภัณฑ์ธรรมชาติวิทยา ข้อมูลจาก GBIF และการลาดตระเวนเชิงคุณภาพ มาทำการวิเคราะห์ด้วยแบบจำลองการกระจายของชนิดร่วมกับปัจจัยสภาพอากาศจาก WorldClim ทั้ง 15 ปัจจัย และปัจจัยเชิงพื้นที่ 2 ปัจจัย ได้แก่ ความสูงจากระดับน้ำทะเล และ ความลาดชัน จาก OpenDataSoft ด้วยโปรแกรม MaxEnt ผลการศึกษาแหล่งที่อยู่พบว่า จิ้งเหลนภูเขาเกล็ดเรียบอาศัยอยู่ในป่าเบญจพรรณ จิ้งเหลนภูเขาอินเดียอาศัยอยู่ในป่าสนและป่าดิบเขา และ จิ้งเหลนภูเขาแกรนดิสันอาศัยอยู่ในป่าดิบเขาเท่านั้น ผลการศึกษาแหล่งที่อยู่ย่อยพบว่าก้อนหิน เป็นองค์ประกอบที่พบได้มากที่สุดในพื้นที่อาศัยของจิ้งเหลนภูเขาเกล็ดเรียบ และกองใบไม้เป็นองค์ประกอบที่พบได้มากที่สุดในพื้นที่อาศัยของจิ้งเหลนภูเขาอินเดียและจิ้งเหลนภูเขาแกรนดิสัน การวิเคราะห์องค์ประกอบหลักตัวแปรสิ่งแวดล้อมที่มีอิทธิพลต่อการเลือกใช้แหล่งที่อยู่ย่อยของจิ้งเหลนภูเขาเกล็ดเรียบ จิ้งเหลนภูเขาอินเดีย และ จิ้งเหลนภูเขาแกรนดิสัน คือ อุณหภูมิอากาศ ระดับความสูงจากน้ำทะเลและความชื้นสัมพัทธ์ในอากาศ ตามลำดับ ผลการศึกษาแบบจำลองการกระจายของชนิด พบว่าปัจจัยสำคัญสำหรับการทำนายแหล่งที่อยู่ของจิ้งเหลนภูเขาเกล็ดเรียบและจิ้งเหลนภูเขาอินเดียคือ อุณหภูมิช่วงรายวันเฉลี่ย และ ปัจจัยสำคัญสำหรับการทำนายแหล่งที่อยู่ของจิ้งเหลนภูเขาแกรนดิสันคือปริมาณน้ำฝนตามฤดูกาล และยังพบว่าแนวโน้มการกระจายของจิ้งเหลนภูเขาเกล็ดเรียบอยู่บริเวณพื้นที่ราบเชิงเขา จิ้งเหลนภูเขาอินเดียอยู่บริเวณตามแนวเทือกเขาและ จิ้งเหลนภูเขาแกรนดิสันอยู่บริเวณยอดเขาสูงของอุทยานแห่งชาติดอยภูคาเท่านั้น ผลของการศึกษาที่ได้สามารถนำมาใช้ในการวางแผนการอนุรักษ์และยังแสดงให้เห็นถึงการประยุกต์ใช้แบบจำลองถิ่นอาศัยในการทำนายแผนที่การกระจายทางภูมิศาสตร์ของสัตว์เลื้อยคลาน
Nocturnal Behavior Of Communally Roosting American Crows (Corvus Brachyrhynchos), Caitlin M. Mrowiec
Nocturnal Behavior Of Communally Roosting American Crows (Corvus Brachyrhynchos), Caitlin M. Mrowiec
Masters Theses
During the winter months in Charleston, Illinois, thousands of American crows (Corvus brachyrhynchos) gather together each night to roost. While aspects of this impressive sight have been studied elsewhere, there is very limited information on how crows behave at night. Additionally, the mechanics and origins of communal roosting are not especially well understood, and the behaviors involved are not always consistently described. This study sought to provide a more complete assessment of crow communal roosting after sunset. I collected data between 2018 and 2020 by locating communal roosts and conducting continuous observations for 4 hours after sunset, with additional checks …
High Prevalence Of Trypanosoma Cruzi Infection In Raccoons (Procyon Lotor) And Associated Risk To Humans In Central Illinois, Esther Onuselogu
High Prevalence Of Trypanosoma Cruzi Infection In Raccoons (Procyon Lotor) And Associated Risk To Humans In Central Illinois, Esther Onuselogu
Masters Theses
Chagas disease, caused by the protozoan parasite Trypanosoma cruzi, remains a neglected tropical disease and a growing health threat in the United States. Raccoons (Procyon lotor) often coexist with humans in urban and suburban areas and serve as reservoir hosts for T. cruzi. While T. cruzi is rare in humans and domestic animals in the U.S., it is common in wildlife species, particularly raccoons and Virginia opossums (Didelphis virginiana). This study aimed to assess the prevalence of T. cruzi infection in the raccoon population of Central Illinois and evaluate the risk of transmission to humans. …
A Road Map For Place Based Collaboration For Conflict Reduction, Joseph L. Zecher
A Road Map For Place Based Collaboration For Conflict Reduction, Joseph L. Zecher
Undergraduate Theses, Professional Papers, and Capstone Artifacts
No abstract provided.
Density And Abundance Estimation Of West Indian Manatee, Trichechus Manatus, Between The States Of Ceará And Piauí, Northeast Brazil, Using Active Acoustics, Katherine Fiedler Choi Lima, Denis Moledo De Sousa Abessa, Daniel Gonzalez-Socoloske, Renata Sousa-Lima, Ana Carolina Oliveira De Meirelles, Cristine Pereira Negrão Silva
Density And Abundance Estimation Of West Indian Manatee, Trichechus Manatus, Between The States Of Ceará And Piauí, Northeast Brazil, Using Active Acoustics, Katherine Fiedler Choi Lima, Denis Moledo De Sousa Abessa, Daniel Gonzalez-Socoloske, Renata Sousa-Lima, Ana Carolina Oliveira De Meirelles, Cristine Pereira Negrão Silva
Faculty Publications
The West Indian manatee is one of the most threatened species in Brazil. The species has currently a patchy distribution from the state of Alagoas to the state of Amapá. The difficulty of observing manatees, especially in estuarine waters, is a challenge for conservation. Therefore, it is necessary to use new methodologies and technologies to solve manatee detection problems in their natural habitats. The goal of this study was to use an active acoustic method of detection to estimate manatee density and abundance in the estuarine complex of the Timonha and Ubatuba rivers, between the states of Ceará and Piauí, …
What's In A Name? Standardization Of Vernacular Names For Trichechus Manatus, A. A. Mignucci-Giannoni, Daniel Gonzalez-Socoloske, Anmari Alvarez-Alemán, Jamie Aquino, D. Caicedo-Herrera, Delma Nataly Castelblanco-Martínez, Diane Claridge, M. Fabiola Corona-Figueroa, Adolphe O. Debrot, Benoit De Thoisy, Carlos Espinoza-Marin, J. Galves, Eddy Garcia-Alfonso, Hector M. Guzman, Jalaludin Ahmad Khan, Jeremy J. Kiszka, Fabia De Oliveira Luna, Miriam Marmontel, Leon David Olivera-Gomez, Christine O'Sullivan, James A. Powell, Enrique Pugibet-Bobea, Indranee Roopsind, Carlos J. Silva
What's In A Name? Standardization Of Vernacular Names For Trichechus Manatus, A. A. Mignucci-Giannoni, Daniel Gonzalez-Socoloske, Anmari Alvarez-Alemán, Jamie Aquino, D. Caicedo-Herrera, Delma Nataly Castelblanco-Martínez, Diane Claridge, M. Fabiola Corona-Figueroa, Adolphe O. Debrot, Benoit De Thoisy, Carlos Espinoza-Marin, J. Galves, Eddy Garcia-Alfonso, Hector M. Guzman, Jalaludin Ahmad Khan, Jeremy J. Kiszka, Fabia De Oliveira Luna, Miriam Marmontel, Leon David Olivera-Gomez, Christine O'Sullivan, James A. Powell, Enrique Pugibet-Bobea, Indranee Roopsind, Carlos J. Silva
Faculty Publications
Trichechus manatus is one of 3 recognized extant species of manatees of the mammalian Order Sirenia. Currently, it is known by various vernacular names, none of which are descriptive of its biology and known distribution. This lack of standardization has led to confusion and miscommunication, hindering conservation efforts for this species. We propose standardizing the vernacular names used to refer to the species and its 2 subspecies based on appropriate geographical characterization in English, Spanish, French, Dutch, and Portuguese, respectively: “American Manatee”, “Manatí de las Américas”, “Lamantin d’Amérique”, “Amerikaanse Lamantijn”, and “Peixe-boi das Américas” for T. manatus; “Florida Manatee”, “Manatí …
Seasonal Abundance Of The Nudibranch Dondice Jupiteriensis On The Colonial Hydroid Eudendrium Carneum, Erika Molina, Daniela Gutierrez-Andrade, Samantha Schlegel, Julia Piper, Louis J. Ambrosio, Michael L. Middlebrooks
Seasonal Abundance Of The Nudibranch Dondice Jupiteriensis On The Colonial Hydroid Eudendrium Carneum, Erika Molina, Daniela Gutierrez-Andrade, Samantha Schlegel, Julia Piper, Louis J. Ambrosio, Michael L. Middlebrooks
Gulf and Caribbean Research
Benthic colonial hydroids often serve as a host to a large variety of invertebrate taxa. The colonial hydroid Eudendrium carneum Clarke, 1882 is host to a variety of epifauna, including the recently described nudibranch Dondice jupiteriensis García—Méndez & Valdés, 2022. Like many species of heterobranch sea slugs, little is known about the natural history and population biology of D. jupiteriensis. Here we describe a year—long study recording the population density and size structure of D. jupiteriensis on E. carneum colonies in Tampa Bay, FL USA. We found that the D. jupiteriensis population persists year—round but is the densest during …
Divergent Response To Anthropogenic Change Within The Songbird Taxon: Insights From The Range Expansion Of The Northern Cardinal And Mitigation Mechanisms For Migratory Bird-Building Collisions, Jenna Brewer
Dissertations, Master's Theses and Master's Reports
Anthropogenic activities have impacted ecosystems across the globe. However, wildlife species have exhibited heterogenous responses to these novel changes, with some species experiencing population growth, and others succumbing to population decline. I studied examples of both within the songbird taxon, focusing on drivers of range expansion in the Northern Cardinal and acoustic mitigation mechanisms for migratory bird-building collisions, a source of decline for many songbird species. I found that the Northern Cardinal’s range was primarily a function of climatic stress, which was supported by the modulation of the molt process across latitudes. Specifically, Northern Cardinals exhibited faster feather growth rates …
Parasite Prevalence And Innate Immunity In Mud And Musk Turtles, Nicole Beckett
Parasite Prevalence And Innate Immunity In Mud And Musk Turtles, Nicole Beckett
Honors Program Theses
Turtles are being infected by both ectoparasites (typically leeches) and endoparasites (typically blood parasites). It is unknown what the parasite intensity is of wild Central Floridian turtles is, and what effect this parasite load has on them. In order to determine these factors wild turtles (Sternotherus odoratus, Kinosternon baurii, and Kinosternon subrubrum) were caught from two locations, Mead Botanical Gardens, and Lake Virginia. Hoop traps were used to catch the turtles, which were then sampled and released. Captured turtles went through a series of measurements as well as a blood draw before release. Blood parasite levels were taken from the …