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2023

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Articles 1021 - 1050 of 1258

Full-Text Articles in Animal Sciences

Carnivore And Ungulate Occurrence In A Fire-Prone Region, Sara J. Moriarty-Graves Jan 2023

Carnivore And Ungulate Occurrence In A Fire-Prone Region, Sara J. Moriarty-Graves

Cal Poly Humboldt theses and projects

Increasing fire size and severity in the western United States causes changes to ecosystems, species’ habitat use, and interspecific interactions. Wide-ranging carnivore and ungulate mammalian species and their interactions may be influenced by an increase in fire activity in northern California. Depending on the fire characteristics, ungulates may benefit from burned habitat due to an increase in forage availability, while carnivore species may be differentially impacted, but ultimately driven by bottom-up processes from a shift in prey availability. I used a three-step approach to estimate the single-species occupancy of four large mammal species: mountain lion (Puma concolor), coyote …

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Genetic Evaluation Of The Current Distribution And Possible Diffrentations Between Lasiurus Borealis And Lasiurus Frantzii In Southwestern North America, Zeinab M. Haidar Jan 2023

Genetic Evaluation Of The Current Distribution And Possible Diffrentations Between Lasiurus Borealis And Lasiurus Frantzii In Southwestern North America, Zeinab M. Haidar

Cal Poly Humboldt theses and projects

Several recent accounts of overlap and historic misidentifications regarding two species of the genus Lasiurus, Western red bat (Lasiurus frantzii) and Eastern red bat (Lasiurus borealis), have cast doubt on our understanding of their distribution, assumed spatial allopatry, and interactions in the United States Southwest. With the use of morphometrics and genetic sequencing, utilizing tissue collected from specimens throughout California and adjoining states, we have reassessed the current distribution, best practices for field identification, and genetic differentiation between both species. Appropriate species classification by region was achieved utilizing mitochondrial DNA, targeting the cytochrome c oxidase …

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Survival And Growth Of Juvenile Coho Salmon (Oncorhynchus Kisutch) In Restored Wetlands Of Humboldt Bay, California, Josh D. Cahill Jan 2023

Survival And Growth Of Juvenile Coho Salmon (Oncorhynchus Kisutch) In Restored Wetlands Of Humboldt Bay, California, Josh D. Cahill

Cal Poly Humboldt theses and projects

Substantial investment in habitat restoration efforts have been made to promote coho salmon (Oncorhynchus kisutch) recovery, yet sampling efforts to document the response of coho salmon populations to wetland restoration are limited. I investigated two cohorts of juvenile coho salmon growth, movement, and survival within the Humboldt Bay drainage in California. My study sites included restoration features and other sample areas in upland creek habitat and in lowland estuarine wetlands that were located in the four largest watersheds within the Humboldt Bay drainage. The objectives of this study were to: (1) determine if coho salmon are using restored, …

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Lipidomic Features Of Honey Bee And Colony Health During Limited Supplementary Feeding, Clara E. Castaños, Mary C. Boyce, Tiffane Bates, A. Harvey Millar, Gavin Flematti, Nathan G. Lawler, Julia Grassl Jan 2023

Lipidomic Features Of Honey Bee And Colony Health During Limited Supplementary Feeding, Clara E. Castaños, Mary C. Boyce, Tiffane Bates, A. Harvey Millar, Gavin Flematti, Nathan G. Lawler, Julia Grassl

Research outputs 2022 to 2026

Honey bee nutritional health depends on nectar and pollen, which provide the main source of carbohydrates, proteins and lipids to individual bees. During malnutrition, insect metabolism accesses fat body reserves. However, this process in bees and its repercussions at the colony level are poorly understood. Using untargeted lipidomics and gene expression analysis, we examined the effects of different feeding treatments (starvation, sugar feeding and sugar + pollen feeding) on bees and correlated them with colony health indicators. We found that nutritional stress led to an increase in unsaturated triacylglycerols and diacylglycerols, as well as a decrease in free fatty acids …

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A Review Of Methods For Detecting Rats At Low Densities, With Implications For Surveillance, Robert A. Davis, Philip J. Seddon, Michael D. Craig, James C. Russell Jan 2023

A Review Of Methods For Detecting Rats At Low Densities, With Implications For Surveillance, Robert A. Davis, Philip J. Seddon, Michael D. Craig, James C. Russell

Research outputs 2022 to 2026

Invasive rats are the biggest threat to island biodiversity world-wide. Though the ecological impacts of rats on insular biota are well documented, introduced rats present a difficult problem for detection and management. In recent decades, improved approaches have allowed for island-wide eradications of invasive rats on small-medium sized islands and suppression on large islands, although both these still represent a formidable logistical and financial challenge. A key aspect of eradication or suppression and ongoing management is the ability to detect the presence of rats, especially at low densities. Here we review recent developments in the field of rat surveillance and …

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A Theoretical And Computational Model For Aquaponics Systems, Isabella M. Digiulio Jan 2023

A Theoretical And Computational Model For Aquaponics Systems, Isabella M. Digiulio

Honors Theses

Aquaponics, a sustainable farming technique combining the principles of aquaculture and hydroponics, suffers from uncertainty in its optimal operating conditions, preventing large-scale adoption of this technology. Relying on experimentation or full-scale testing to address these uncertainties is an approach that is material, labor, time, and cost intensive. As a result, aquaponics would benefit from a complete computational model of the system. This would allow for information to be gained without long and expensive experiments, but rather with knowledge of system operations and a modeling software package. In this study, the Activated Sludge Model 1 (ASM1) matrix framework, traditionally used in …

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Analysis For Prioritizing Risk Status And Sustainable Utilization Of Cattle, Sheep, And Goat Breeds In Türkiye, Mesut Yildirir, Seyrani̇ Koncagül, Yasemi̇n Öner, Ayşe Oya Akin Jan 2023

Analysis For Prioritizing Risk Status And Sustainable Utilization Of Cattle, Sheep, And Goat Breeds In Türkiye, Mesut Yildirir, Seyrani̇ Koncagül, Yasemi̇n Öner, Ayşe Oya Akin

Turkish Journal of Veterinary & Animal Sciences

Animal Genetic Resources (AnGR) are a warranty for future unknown conditions and needs. Due to this fact, sustainable use and conservation of AnGR have special importance, and to achieve reliable programs for these goals, the risk status of AnGR should be estimated accurately. The aim of this study was to estimate the risk status for three widely used domesticated livestock species of cattle, sheep, and goat in animal production: 6 cattle, 33 sheep, and 15 goat breeds were included in the analysis. Extinction probability (z) was taken as a criterion for the risk status of each breed. Data collection based …

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Phenotypic And Genotypic Characterization Of Antimicrobial Resistance In Commonly Isolated Salmonella Serovars From Chickens, Seyyi̇de Sariçam İnce, Mehmet Akan Jan 2023

Phenotypic And Genotypic Characterization Of Antimicrobial Resistance In Commonly Isolated Salmonella Serovars From Chickens, Seyyi̇de Sariçam İnce, Mehmet Akan

Turkish Journal of Veterinary & Animal Sciences

Salmonellosis caused by Salmonella agents is the second most common zoonotic infection in humans. In recent years, Salmonella's increasing antimicrobial resistance (AMR) has been a concern. The major transmission route of Salmonella is consumption of contaminated poultry products. Therefore, monitoring of antimicrobial resistance in chicken-originated Salmonella is critically important. This study investigated AMR in four commonly isolated Salmonella serovars from chickens, namely Salmonella Enteritidis (S. Enteritidis), Salmonella Infantis (S. Infantis), Salmonella Kentucky (S. Kentucky), and Salmonella Typhimurium (S. Typhimurium). A total of 133 isolates were examined by phenotypic and genotypic AMR characterization. Resistance to 14 different antimicrobials and eight …

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Development And Validation Of A Scale For Measuring Pet Owners' Loyalty To Their Pet*, Seda Çavuş Alan, Abdullah Özen, Nurhan Hali̇sdemi̇r Jan 2023

Development And Validation Of A Scale For Measuring Pet Owners' Loyalty To Their Pet*, Seda Çavuş Alan, Abdullah Özen, Nurhan Hali̇sdemi̇r

Turkish Journal of Veterinary & Animal Sciences

Loyalty is a person's willingness to devote oneself to a cause and consists of concepts such as fidelity, not giving up, continuity, and stability. For this reason, this relationship stems from loyalty to be able to talk about a strong attachment between humans and animals. This study aimed to develop a measurement tool for the evaluation of the loyalty levels of people toward their pets. The qualitative method for determining the judgments in the scale will be called the pet loyalty scale; the quantitative methods (explanatory factor analysis and confirmatory factor analysis) were used to determine the validity and reliability …

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Influence Of Temperature-Humidity Index, Calf Sex, And Parity On Gestation Length In Holstein Cows, Lazoumi Ouarfli, Abdelmadjid Chehma Jan 2023

Influence Of Temperature-Humidity Index, Calf Sex, And Parity On Gestation Length In Holstein Cows, Lazoumi Ouarfli, Abdelmadjid Chehma

Turkish Journal of Veterinary & Animal Sciences

The present study aimed to analyse the gestation length (GL) variability in locally born purebred Holstein dams (n = 1047), in a private farm, under Saharan climate. The overall GL mean was 278.73 ± 6.67 days. A general linear model revealed that the GL was significantly affected by calf sex (p = 0.035) with a minor increase of 0.19% in males, dam parity (p = 0.016) and calving season (p < 0.0001) including the shortest lengths recorded in heifers and during heat stress period. Moreover, a negative regression (-1.96%) in recent years was recorded in GL by the influence (p = 0.01) of years of birth, breeding, and calving of cows. Our findings show that cows that were inseminated and gave birth during the cold season (temperature-humidity index, THI < 74) had 11.54 days longer (p = 0.048) gestation period compared to animals that were inseminated and gave birth during the hot season (THI > 84). Similarly, the association (p = 0.003) between dam parity and calf sex revealed that the GL of multiparous cows that gave birth to male calves was higher (3.07 days) …

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Genotyping Of The Κ - Casein Gene By Pcr - Rflp (Acui Digestion) And Its Relationship To Milk Yield Traits In Anatolian Buffaloes, Murrah Buffaloes, And Their Crosses, Orhan Karadağ, Vasfi̇ye Kader Esen, Mehmet Aki̇f Yüksel, Mustafa Küçükkebabçi, Semi̇h Sevi̇m, İlkay Çeti̇n, Bi̇nnur Kaptan, Mehmet İhsan Soysal Jan 2023

Genotyping Of The Κ - Casein Gene By Pcr - Rflp (Acui Digestion) And Its Relationship To Milk Yield Traits In Anatolian Buffaloes, Murrah Buffaloes, And Their Crosses, Orhan Karadağ, Vasfi̇ye Kader Esen, Mehmet Aki̇f Yüksel, Mustafa Küçükkebabçi, Semi̇h Sevi̇m, İlkay Çeti̇n, Bi̇nnur Kaptan, Mehmet İhsan Soysal

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to investigate the polymorphism of the κ - casein gene (kappa casein, CSN3) in buffaloes and determine its effects on milk yield traits. Data were obtained from 2016 to 2019 from all animals in the ongoing Anatolian Buffalo Breeding Project. Genomic DNA was collected from a total of 209 buffaloes of different ages and sexes, namely 31 Murrah, 46 Anatolian buffaloes, and 132 of their crosses (Murrah × Anatolian). Genotyping of CSN3 gene by polymerase chain reaction-restriction fragment length polymorphism (PCR - RFLP) technique with restriction enzyme (AcuI) revealed three …

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Are The Mandible Shapes Of Common (Paradoxurus Hermaphroditus) And Golden (Paradoxurus Zeylonensis) Palm Civets Different? A Pilot Study, İftar Gürbüz, Yasi̇n Demi̇raslan, Channa Rajapaksha, Devaka K. Weerakoon, Saminda Fernando Jan 2023

Are The Mandible Shapes Of Common (Paradoxurus Hermaphroditus) And Golden (Paradoxurus Zeylonensis) Palm Civets Different? A Pilot Study, İftar Gürbüz, Yasi̇n Demi̇raslan, Channa Rajapaksha, Devaka K. Weerakoon, Saminda Fernando

Turkish Journal of Veterinary & Animal Sciences

In this study adult common and golden palm civet mandibles were analysed by geometric morphometric method. For this purpose, the materials were photographed in accordance with the procedure and analysed using computer programs. No allometric component was detected in the comparison of the mandibles. The first principal component defined 28.657% of the total shape variation in the mandibles of the two groups that were analysed with a total of 19 landmarks. The samples were largely separated from each other in the principal component analysis. The shape differences were mostly in the caudal of the mandible. Also, in the common palm …

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A Comparative Profile Of Certain Biochemical And Hematological Parameters In Angora And Akkeçi Goats During The Transition Period, Rabi̇a Aktaş, Erkan Pehli̇van Jan 2023

A Comparative Profile Of Certain Biochemical And Hematological Parameters In Angora And Akkeçi Goats During The Transition Period, Rabi̇a Aktaş, Erkan Pehli̇van

Turkish Journal of Veterinary & Animal Sciences

This study investigated the comparative changes in hematological and certain biochemical parameters such as glucose, cholesterol, triglyceride calcium, phosphorus and total protein during the transition period in Angora and Akkeçi goats aged 2-4 years. For this purpose, blood samples were regularly taken from the vena jugularis of each goat at 3, 2, and 1 weeks before kidding (-3, -2 and -1), on the day of parturition (0) and 1, 2, and 3 weeks after kidding (+1, +2 and +3). According to the statistical analysis results, the differences between the averages of the groups in terms of MCHC, MCH, Lym, THR, …

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Efficacy Of Acacia Nilotica Bark Extract As An Alternative To Antibiotics In Broilers Challenged With Escherishia Coli From 15 To 28 Days, Muhammad Umer Zahid, Anjum Khalique, Shafqat Nawaz Qaisrani, Muhammad Ashraf, Ali Ahmad Sheikh, Muhammad Umar Yaqoob Jan 2023

Efficacy Of Acacia Nilotica Bark Extract As An Alternative To Antibiotics In Broilers Challenged With Escherishia Coli From 15 To 28 Days, Muhammad Umer Zahid, Anjum Khalique, Shafqat Nawaz Qaisrani, Muhammad Ashraf, Ali Ahmad Sheikh, Muhammad Umar Yaqoob

Turkish Journal of Veterinary & Animal Sciences

The present experiment was conducted to compare the effect of Acacia nilotica bark extract and antibiotic on different biological parameters in broilers challenged with E. coli. Five hundred 2-week-old broiler chicks were divided into five treatments (Cont, NC, PC, AN-BE3, and AN-BE5) with ten replicates per treatment (10 chicks per replicate), and the experiment was extended over 2 weeks. All chicks, except that of Cont were challenged with E. coli (10$^{7}$ CFU/bird). Cont: basal diet only; NC: challenged with E. coli; PC: NC + Zinc Bacitracin 50 mg/kg diet; AN-BE3: NC + A. nilotica bark extract supplementation 0.3%; …

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The Efficiency Of Toltrazuril, Thymol, And Toltrazuril + Thymol Combination On Eimeriosis In Lamb, Mehmet Özüi̇çli̇, Ahmet Onur Gi̇ri̇şgi̇n, İhsan Kisadere, Ali̇ İhsan Di̇ker, Ali̇ Erdi̇ Candar, Levent Aydin Jan 2023

The Efficiency Of Toltrazuril, Thymol, And Toltrazuril + Thymol Combination On Eimeriosis In Lamb, Mehmet Özüi̇çli̇, Ahmet Onur Gi̇ri̇şgi̇n, İhsan Kisadere, Ali̇ İhsan Di̇ker, Ali̇ Erdi̇ Candar, Levent Aydin

Turkish Journal of Veterinary & Animal Sciences

This study aimed to evaluate and compare the efficacy of the treatment with a single dose of toltrazuril 5% (Baycox), thymol (Versatile, Nine Life, United Arab Emirates), and toltrazuril + thymol combination to control Eimeria spp. infection in lambs in intensive feeding. The study was designed with five groups and these groups aligned as; group 1 (negative control group; NEG), group 2 (positive control group; POZ), group 3 (thymol; THY), group 4 (toltrazuril; TOL) and group 5 [(thymol + toltrazuril; (THY + TOL)]. Each group consisted of 26 Merino lambs which are 60-75 days old each. Treatment groups were administered …

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Effect Of Acute And Repeated Noise Exposure On The Behaviour And Lipid Peroxidation In Brain Tissue Of Male And Female Mice, Gabriella Korsós, Kinga Fodor, Annamária Kiss, Anna Blázovics, Sándor György Fekete Jan 2023

Effect Of Acute And Repeated Noise Exposure On The Behaviour And Lipid Peroxidation In Brain Tissue Of Male And Female Mice, Gabriella Korsós, Kinga Fodor, Annamária Kiss, Anna Blázovics, Sándor György Fekete

Turkish Journal of Veterinary & Animal Sciences

Despite the increasingly obvious sex differences, male animals are still predominantly used to study stress and related disorders. The aim of this study was to evaluate the effects of repeated noise stress in female and male mice. In the experiment, 12 male and 12 and female SPF/VAF 6-week-old Crl:CD1(lcr) mice were used. After 5 days of acclimatization all animals were placed in the open-field for three consecutive days where each mouse spent 10 min daily without any noise treatment in order to get used to the circumstances of the test. On day 9 to record baseline behaviour the animals were …

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Serum Trace Element Levels In Dogs With Canine Visceral Leishmaniasis, Aycan Nuri̇ye Gazyağci, Bengü Bi̇lgi̇ç, Berna Baysal Bakay, Duygu Tarhan, Alev Meltem Ercan, Songül Erdoğan, Hasan Erdoğan, Mehmet Erman Or, Kerem Ural Jan 2023

Serum Trace Element Levels In Dogs With Canine Visceral Leishmaniasis, Aycan Nuri̇ye Gazyağci, Bengü Bi̇lgi̇ç, Berna Baysal Bakay, Duygu Tarhan, Alev Meltem Ercan, Songül Erdoğan, Hasan Erdoğan, Mehmet Erman Or, Kerem Ural

Turkish Journal of Veterinary & Animal Sciences

Canine visceral leishmaniasis has been denoted as neglected despite being a very well-known disease. Trace element alteration has been recognized in humans with visceral and cutaneous leishmaniasis, together with canine visceral leishmaniasis. The trace elements occupy a vital position in the immunological system, and host immune responses mitigate defense against leishmaniasis. We aimed to select trace elements in a total of 45 dogs of several breeds; those at the age of 11 months to 6 and from both sexes (26 male and 19 female) were enrolled in the study. The dogs included in the study were divided into leishmaniasis-infected and …

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Using Different Levels Of Coated Calcium Sodium Butyrate In The Diet Of Quail On Growth Performance, Duodenal Histomorphology, And Some Biochemical Parameters, Mükremi̇n Ölmez, Tarkan Şahi̇n, Şükran Yedi̇el Aras, Özlem Karadağoğlu, Ebru Karadağ Sari, Hati̇ce Gi̇zem Büyükbaki̇, Ebrar Fi̇li̇zoğlu, İdi̇l Şerbetçi̇ Jan 2023

Using Different Levels Of Coated Calcium Sodium Butyrate In The Diet Of Quail On Growth Performance, Duodenal Histomorphology, And Some Biochemical Parameters, Mükremi̇n Ölmez, Tarkan Şahi̇n, Şükran Yedi̇el Aras, Özlem Karadağoğlu, Ebru Karadağ Sari, Hati̇ce Gi̇zem Büyükbaki̇, Ebrar Fi̇li̇zoğlu, İdi̇l Şerbetçi̇

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to determine growth performance, duodenal histomorphology, and some biochemical parameters in quails' diets containing coated calcium sodium butyrate (CSB). One hundred sixty 1-day-old Japanese quails were arranged into four trial groups consisting of 5 replicates with eight chicks per replicate. One group was formed as a control group without CSB, and the other experimental groups were formed by adding CSB at the level of 0.06% (CSB - 1), 0.08% (CSB - 2), and 0.1% (CSB - 3). All diets were prepared isonitrogenically and isocalorically, with 24% CP and 3000 kcal/kg ME content. The trial …

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Cluster Homolog Of Immunoglobulin-Like Receptor Genes In Chicken Immune Responses, Brandi A. Sparling Jan 2023

Cluster Homolog Of Immunoglobulin-Like Receptor Genes In Chicken Immune Responses, Brandi A. Sparling

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores the identity and role of immunoglobulin-like (Ig-like) receptors in chickens, with focus on their implications in disease and disease progression. These receptors, wisely expressed across immune cells, interact with the major histocompatibility complex (MHC) class I molecules to modulate immune responses in mammals. Due to the insufficient representation of chicken Ig-like receptors in online databases, this study systematically annotates the chicken Cluster Homolog of Immunoglobulin-like Receptors (CHIR) genes using advanced bioinformatic techniques, aligning with the release of the 7th edition of the chicken genome assembly that comprises builds for a broiler and layer chicken. The analysis identifies …

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Manipulating Social Mobility To Measure Group Stability In Crickets, Anne Tolo Jan 2023

Manipulating Social Mobility To Measure Group Stability In Crickets, Anne Tolo

All Master's Theses

Dominance hierarchies are typically formed so that members of the hierarchy can benefit from residing in a social structure where conflict is decreased, and each individual obtains a rank within the group. Members can either actively seek out a higher social rank to maximize fitness or remain in a lower position to benefit from the protection of living in a group. This study was designed to manipulate the social stability typically exhibited within hierarchies by experimentally increasing social perturbance in groups of tropical house crickets, Gryllodes sigillatus. Rank changes per unit time were used as a measure to understand …

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Forest Patrol Guards And Caregivers' Perceptions Of Wild Chimpanzee Populations Near Tacugama Chimpanzee Sanctuary, Sierra Leone, Virginia Sanchez Jan 2023

Forest Patrol Guards And Caregivers' Perceptions Of Wild Chimpanzee Populations Near Tacugama Chimpanzee Sanctuary, Sierra Leone, Virginia Sanchez

All Master's Theses

Relationships between humans and alloprimates, in particular between humans and chimpanzees (Pan troglodytes), have occurred for centuries. Chimpanzee discoveries by western philosophers date back to the 16th and 17th centuries, and their earliest accounts in West Africa suggest that chimpanzees interacted and lived in close contact with humans, thus shaping the way both species adapt to their environments. Humans occupy this same space along with chimpanzees, and we need them as much as they need us. The continued decline in wild populations of species such as chimpanzees can have negative impacts for biodiversity. Chimpanzees have a …

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Intestinal Parasite Infection In Tibetan Macaques (Macac Thebetana) In Eastern China, Miarisoa Ramilison Jan 2023

Intestinal Parasite Infection In Tibetan Macaques (Macac Thebetana) In Eastern China, Miarisoa Ramilison

All Master's Theses

Grooming is one of the crucial social behaviors of primate species that functions to remove parasites and maintain social bonds. Although, much data exists to support the idea that grooming is essential in forming and sustaining social bonds among individuals, there is a lack of information about the extent to which it removes ectoparasites or contributes to the spread of internal parasites. To fill this gap in the literature, we investigated the relationship between social contact behavior including grooming and intestinal parasite infection in Tibetan macaques (Macaca thibetana). This species lives at Mt. Huangshan in China. We used …

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Characterizing Genetic Diversity And Testing For Fisheries Induced Evolution In Southeastern Kansas Populations Of Bluegill (Lepomis Macrochirus), Morganne C. Borsh Jan 2023

Characterizing Genetic Diversity And Testing For Fisheries Induced Evolution In Southeastern Kansas Populations Of Bluegill (Lepomis Macrochirus), Morganne C. Borsh

Dissertations and Theses @ UNI

Bluegill (Lepomis macrochirus) is a popular and versatile sport fish with wide distribution. Fisheries management of the species is generally nebulous due to the additive role of environmental factors, genetics, social interactions, and alternative reproductive tactics in determining bluegill growth. Size structure could be further influenced by angling pressure: large parental males are more susceptible to harvest than smaller cuckolders. The systematic removal of large individuals through angling can result in stunted populations via fisheries induced evolution (FIE). In southeastern Kansas, bluegill from popularly fished impoundments are projected to have smaller sizes compared to isolated or inaccessible impoundments from the …

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River Report. State Of Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2023, Environmental Protection Board, Jacksonville Florida, University Of North Florida, Jacksonville University, Gerry Pinto, Brian P. Zoellner, Christopher Baynard, Gretchen Bielmyer-Fraser, Dale Casamatta, Charles Closmann, Nisse Goldberg, Ashley Johnson, Scott Jones, William Penwell, Radha Pyati, Adam Rosenblatt Jan 2023

River Report. State Of Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2023, Environmental Protection Board, Jacksonville Florida, University Of North Florida, Jacksonville University, Gerry Pinto, Brian P. Zoellner, Christopher Baynard, Gretchen Bielmyer-Fraser, Dale Casamatta, Charles Closmann, Nisse Goldberg, Ashley Johnson, Scott Jones, William Penwell, Radha Pyati, Adam Rosenblatt

State of the River Report

No abstract provided.

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A Diet Comparison Of Bluegill And Bluegill X Pumpkinseed Hybrids, Russell D. Zwiers Jan 2023

A Diet Comparison Of Bluegill And Bluegill X Pumpkinseed Hybrids, Russell D. Zwiers

Journal of Earth and Life Science

Bluegill Lepomis macrochirus and pumpkinseed Lepomis gibbosus commonly prey upon macroinvertebrates but have been found to show different preferences to what type of macroinvertebrates. Hybrids of the two species have been found to display physical characteristics of both parents but prey selection of the hybrids compared to the parents is unknown. Therefore, the objective of this study was to analyze the diets of bluegill and bluegill x pumpkinseed hybrids to understand what each species’ preference is when it comes to food as well as finding how a hybrid’s diet compares to the pure breed of one of the two crossed …

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Effects Of Velocity And Substrate Size On The Formation Of Zebra Mussel Druses, Ian Mott Jan 2023

Effects Of Velocity And Substrate Size On The Formation Of Zebra Mussel Druses, Ian Mott

Journal of Earth and Life Science

Zebra Mussels Dreissena polymorpha are an invasive bivalve species that are highly successful at dominating new environments. These invaders have been known to colonize substrate so thoroughly that all they have to attach to are members of their own species. When large mats of interconnected mussels completely cover a riverbed, it can have a drastic effect on the surrounding environment. This study serves to create a better understanding of the hydrologic parameters needed for Zebra Mussels to create these ecosystem-transforming colonies known as druses. Data was collected on a small stretch of the Upper Mississippi River in Northern Minnesota, previously …

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Estimate Of Long-Term Phytoplankton Biomass In Lake Bemidji, William J. Peterson Jan 2023

Estimate Of Long-Term Phytoplankton Biomass In Lake Bemidji, William J. Peterson

Journal of Earth and Life Science

Phytoplankton are photosynthetic organisms that are the base of aquatic food webs. In a dimictic temperate lake such as Lake Bemidji, the environment adjusts with the changing water temperatures and sunlight levels. The phytoplankton in a dimictic lake are adapted to subsist in long term seasonal changes but the exact change to the number of phytoplankton in unknown. The focus of this study was to estimate the biomass of phytoplankton in a long term period including winter stratification and summer peak. From a period between March 2023 and October 2023 water samples were collected from the lake in the south …

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Straight From The Coyote’S Mouth: Genetic Identification Of Prey Through Oral Swabs Of Predators, Julie K. Young, Amanda M. Mast, James A. Walton, Torrey Rodgers, Antionette J. Piaggio, Daniel R. Taylor, Karen E. Mock Jan 2023

Straight From The Coyote’S Mouth: Genetic Identification Of Prey Through Oral Swabs Of Predators, Julie K. Young, Amanda M. Mast, James A. Walton, Torrey Rodgers, Antionette J. Piaggio, Daniel R. Taylor, Karen E. Mock

United States Department of Agriculture Wildlife Services: Staff Publications

Human-carnivore conflicts often involve the depredation of domestic livestock. These depredation events are rarely observed, yet mitigation typically involves identifying the species or individual involved for removal or relocation. We tested a molecular method to identify individuals involved in depredation events using mouth swabs to determine if prey DNA could be detected, and for how long. We fed mule deer Odocoileus hemionus meat to captive coyotes Canis latrans and swabbed their mouths at five predetermined intervals between 2–72 h after consumption of the deer meat. We assessed two different molecular forensic methods to analyze the saliva swabs: qPCR for species …

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Movements And Resource Selection Of Wild Pigs Associated With Growth Stages Of Corn, Bethany A. Friesenhahn, Randall W. Deyoung, Michael J. Cherry, Humberto L. Perotto-Baldivieso, Kurt C. Vercauteren, Nathan P. Snow Jan 2023

Movements And Resource Selection Of Wild Pigs Associated With Growth Stages Of Corn, Bethany A. Friesenhahn, Randall W. Deyoung, Michael J. Cherry, Humberto L. Perotto-Baldivieso, Kurt C. Vercauteren, Nathan P. Snow

United States Department of Agriculture Wildlife Services: Staff Publications

Wild pigs (Sus scrofa) are one of the most successful invasive species globally and are often implicated in agricultural damage. This damage is expected to increase as ranges of wild pigs expand, impacting the human food supply and increasing costs of food production. Our objective was to evaluate movement behaviors of wild pigs relative to resource availability and landscape features in an agriculture-dominated landscape, with a goal of informing management practices for reducing damage to corn. We monitored hourly movements of adult wild pigs relative to corn crops using GPS collars during the 2019 and 2020 growing seasons (Feb–Sept) in …

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Burmese Pythons In Florida: A Synthesis Of Biology, Impacts, And Management Tools, Jacquelyn C. Guzy, Bryan G. Falk, Brian J. Smith, John David Willson, Robert N. Reed, Nicholas G. Aumen, Michael L. Avery, Ian A. Bartoszek, Earl Campbell, Michael S. Cherkiss, Natalie M. Claunch, Andrea F. Currylow, Tylan Dean, Jeremy Dixon, Richard Engeman, Sarah Funck, Rebekah Gibble, Kodiak C. Hengstebeck, John S. Humphrey, Margaret E. Hunter, Jillian M. Josimovich, Jennifer Ketterlin, Michael Kirkland, Frank J. Mazzotti, Robert Mccleery, Melissa A. Miller, Matthew Mccollister, M. Rockwell Parker, Shannon E. Pittman, Michael Rochford, Christina Romagosa, Art Roybal, Ray W. Snow, Mckayla M. Spencer, J. Hardin Waddle, Any A. Yackel Adams, Kristen M. Hart Jan 2023

Burmese Pythons In Florida: A Synthesis Of Biology, Impacts, And Management Tools, Jacquelyn C. Guzy, Bryan G. Falk, Brian J. Smith, John David Willson, Robert N. Reed, Nicholas G. Aumen, Michael L. Avery, Ian A. Bartoszek, Earl Campbell, Michael S. Cherkiss, Natalie M. Claunch, Andrea F. Currylow, Tylan Dean, Jeremy Dixon, Richard Engeman, Sarah Funck, Rebekah Gibble, Kodiak C. Hengstebeck, John S. Humphrey, Margaret E. Hunter, Jillian M. Josimovich, Jennifer Ketterlin, Michael Kirkland, Frank J. Mazzotti, Robert Mccleery, Melissa A. Miller, Matthew Mccollister, M. Rockwell Parker, Shannon E. Pittman, Michael Rochford, Christina Romagosa, Art Roybal, Ray W. Snow, Mckayla M. Spencer, J. Hardin Waddle, Any A. Yackel Adams, Kristen M. Hart

United States Department of Agriculture Wildlife Services: Staff Publications

Burmese pythons (Python molurus bivittatus) are native to southeastern Asia, however, there is an established invasive population inhabiting much of southern Florida throughout the Greater Everglades Ecosystem. Pythons have severely impacted native species and ecosystems in Florida and represent one of the most intractable invasive-species management issues across the globe. The difficulty stems from a unique combination of inaccessible habitat and the cryptic and resilient nature of pythons that thrive in the subtropical environment of southern Florida, rendering them extremely challenging to detect. Here we provide a comprehensive review and synthesis of the science relevant to managing invasive …

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