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Articles 31 - 60 of 2200
Full-Text Articles in Zoology
Dog Snapper (Lutjanus Jocu) Neurocranium, Camila Avila Escobar, David W. Kerstetter
Dog Snapper (Lutjanus Jocu) Neurocranium, Camila Avila Escobar, David W. Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Black Grouper (Mycteroperca Bonaci) Neurocranium, Layla Lacelle, David W. Kerstetter
Black Grouper (Mycteroperca Bonaci) Neurocranium, Layla Lacelle, David W. Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Bluefish (Pomatomus Saltatrix) Neurocranium, Courtney R. Schober, Alyssa Olmeda, David W. Kerstetter
Bluefish (Pomatomus Saltatrix) Neurocranium, Courtney R. Schober, Alyssa Olmeda, David W. Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Bonita - Euthynnus Alletteratus Neurocranium, Daniella M. Acosta Reyes, Matthew Mcmanus, Morgan Michalek, David W. Kerstetter
Bonita - Euthynnus Alletteratus Neurocranium, Daniella M. Acosta Reyes, Matthew Mcmanus, Morgan Michalek, David W. Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Red Snapper (Lutjanus Campechanus) Neurocranium, Sarah Hendricks, Morgan Indyk, David W. Kerstetter
Red Snapper (Lutjanus Campechanus) Neurocranium, Sarah Hendricks, Morgan Indyk, David W. Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Red Snapper (Lutjanus Campechanus) Neurocranium, Riley B. Glogowski, David W. Kerstetter
Red Snapper (Lutjanus Campechanus) Neurocranium, Riley B. Glogowski, David W. Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Bull Shark (Carcharihinus Leucas) Chondrocranium, Nicholas Burchett, Michelle Bassali, David W. Kerstetter, Roman Devlin
Bull Shark (Carcharihinus Leucas) Chondrocranium, Nicholas Burchett, Michelle Bassali, David W. Kerstetter, Roman Devlin
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Abiotic Factors Influencing Anuran Occupation Of Neotropical Brazilian Caves, Vinícius F. Sperandei, Willian Vaz-Silva, Tejerina-Garro L. Francisco
Abiotic Factors Influencing Anuran Occupation Of Neotropical Brazilian Caves, Vinícius F. Sperandei, Willian Vaz-Silva, Tejerina-Garro L. Francisco
International Journal of Speleology
Despite increasing research on the Neotropical underground environment, anurans remain poorly understood in this habitat. It was analyzed scientific literature records of anurans in Brazilian natural caves and performed a redundancy analysis (RDA) to identify the environmental, taxonomic, geographic, geological and land-use variables that influence their cave occupancy. It was examined a total of 247 literature records, encompassing 83 species/morphospecies, which revealed distinct cave-dwelling tendencies. Some anuran species occupy caves at altitudes between 5 to 21 meters above sea level (m asl), in areas characterized by rocky outcrops and grassland. Others are associated with caves surrounded by forest, savanna, pasture …
Microbial Guardians Of The Savannah: Unraveling The Gut Microbiome For African Carnivore Conservation, Laura E. Peirson
Microbial Guardians Of The Savannah: Unraveling The Gut Microbiome For African Carnivore Conservation, Laura E. Peirson
All NMU Master's Theses
Non-invasive fecal sampling is essential for wildlife gut microbiome (GMB) research, yet field conditions often limit preservation options. I compared gut bacterial communities in paired fecal samples preserved in stabilization tubes and air-dried in paper bags collected from anesthetized African lions (Panthera leo) and spotted hyenas (Crocuta crocuta) in Etosha National Park, Namibia. Additional opportunistic samples from carnivore kill sites were also analyzed. No significant differences in alpha or beta diversity were detected between preserved and dried samples, although bacterial beta diversity differed between preserved and opportunistic samples (PERMANOVA). Core bacterial communities remained consistent across sample …
Site Fidelity, Seasonality, Movement, And Fish Associates Of Sand Tigers Carcharias Taurus In North Carolina, Ara L. Mcclanahan
Site Fidelity, Seasonality, Movement, And Fish Associates Of Sand Tigers Carcharias Taurus In North Carolina, Ara L. Mcclanahan
Electronic Theses and Dissertations
Sand tigers Carcharias taurus are mackerel sharks with a disjunct global distribution in tropical and temperate seas. In the northwest Atlantic, sand tigers migrate along the coast of the eastern United States from the Gulf of Maine to Florida and occupy structurally complex benthic habitats. The long-term, underwater camera installation, SharkCam, at Frying Pan Tower, off Cape Fear, North Carolina, USA, sits atop an expanse of hard bottom reef frequented by sand tigers. The citizen-science platform Spot A Shark USA (SAS USA) uses images of sand tigers to identify and track individuals. This study utilized image encounters from SAS USA …
Spatial And Thermal Aspects Of The Ecology Of Three Sympatric Rattlesnakes In The Montane Northern Chihuahuan Desert, Joshua James Mead
Spatial And Thermal Aspects Of The Ecology Of Three Sympatric Rattlesnakes In The Montane Northern Chihuahuan Desert, Joshua James Mead
Open Access Theses & Dissertations
To understand how animals coexist on the landscape, the individual aspects of a species life history must first be understood. Animals need to find locations that provide the resources they need to survive. Movement, microhabitats, and temperature can alter such areas where animals occur. Understanding animal movements provide important information on space use and microhabitats on the landscape. Ectothermic animals must acquiesce to ambient temperatures or use behavioral modifications to alter their body temperature. The ability to maintain suitable body temperature is essential for physiological function, reproduction, and ability to avoid predation. Research on the variation in a species ecology …
Gut Passage Time In Small Mammals: Influences Of Small Mammal Traits, Digesta Phase, And Particle Morphology, Noah G. Hale
Gut Passage Time In Small Mammals: Influences Of Small Mammal Traits, Digesta Phase, And Particle Morphology, Noah G. Hale
Electronic Theses and Dissertations
Dispersal is crucial in maintaining healthy ecosystems, but little is known about mechanisms influencing fungal spore dispersal by animals. We aimed to develop a more mechanistic understanding of the influence of fungal spore traits and small mammal traits on gut retention time. We fed three species of small mammals (shrew, mouse, vole), which differ in gut morphologies, digestive strategies, and activity a combination of markers including: liquid digesta phase (CrEDTA), small particle (fungal spores with diverse morphologies), and large particles (glitter and beads, representing plant cells and seeds, respectively). We found that hindgut fermenters selectively retained the liquid markers, spores …
Life Of Moo Deng, The Internet Sensation Pygmy Hippopotamus: An Overview Of The Biology And Conservation Breeding Program In Thailand, Ampika Thongphakdee, Atthapon Nundee, Umaporn Maikeaw, Narongwit Chodchoy, Chainarong Punkong, Kaywalee Chatdarong
Life Of Moo Deng, The Internet Sensation Pygmy Hippopotamus: An Overview Of The Biology And Conservation Breeding Program In Thailand, Ampika Thongphakdee, Atthapon Nundee, Umaporn Maikeaw, Narongwit Chodchoy, Chainarong Punkong, Kaywalee Chatdarong
The Thai Journal of Veterinary Medicine
The hippopotamus, commonly known as the hippo, is classified into two extant species: the common hippopotamus (Hippopotamus amphibius) and the pygmy hippopotamus (Choeropsis liberiensis). Pygmy hippos are fascinating creatures native to the forests and swamps of West Africa. Their survival is increasingly threatened by habitat loss resulting from agricultural expansion and urban development. As the population declines, zoological institutions play a crucial role in conservation by acting as genetic reservoirs and promoting public awareness of wildlife and environmental protection. “Moo Deng”, a pygmy hippo, whose name in Thai has gained international recognition, represents a notable success …
The Mayfly Newsletter, Donna Giberson
The Mayfly Newsletter, Donna Giberson
The Mayfly Newsletter
The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.
Diversity And Habitat Use Of Bats In Modified Suburban Landscapes, Brittany Morgera
Diversity And Habitat Use Of Bats In Modified Suburban Landscapes, Brittany Morgera
Biology Presentations
Bats occupy critical ecological niches and perform important ecosystem services like controlling insect populations. However, humans have altered bat habitat substantially, resulting in the reduction of bat populations. The goals of this research are to assess bat diversity and habitat use across different levels of suburban habitat modification. To accomplish this, we deployed passive acoustic recorders at twelve locations with varying human impact in Montgomery County, Pennsylvania. In accordance with The North American Bat Monitoring Program’s standards, acoustic analysis software was used to identify bat species. Manual identification methods from The Canadian Wildlife Health Cooperative were used to verify these …
Passive Integrated Transponders: An Effective Marking Technique For Individual Identification Of Anaxyrus Fowleri?, Emily Leprell
Passive Integrated Transponders: An Effective Marking Technique For Individual Identification Of Anaxyrus Fowleri?, Emily Leprell
Honors College Theses
With the rise of fungal disease such as Chytridiomycosis, known as chytrid, causing massive population declines for many species of frogs and toads (order Anura), specific conservation strategies are needed now more than ever. In many cases, being able to mark and identify individuals is a necessary step in developing an effective conservation plan. Individual identification allows researchers to obtain accurate population estimates, which are needed to test the progress and validity of conservation management decisions. However, due to their unique life history, including cutaneous respiration and a dichotomous lifestyle, anurans are among the most difficult wildlife species to …
Yellow Stingray (Urobatis Jamaicensis) Jaw, Marissa Rosas, David Kerstetter
Yellow Stingray (Urobatis Jamaicensis) Jaw, Marissa Rosas, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Jaw, Nicholas Burchett, David Kerstetter, Derek Burkholder
Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Jaw, Nicholas Burchett, David Kerstetter, Derek Burkholder
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Neurocranium, Michelle Bassali, David Kerstetter, Ema Nagel
Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Neurocranium, Michelle Bassali, David Kerstetter, Ema Nagel
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Jaw, Michelle Bassali, David Kerstetter, Ema Nagel
Atlantic Sharpnose Shark (Rhizoprionodon Terraenovae) Jaw, Michelle Bassali, David Kerstetter, Ema Nagel
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Atlantic Sharpnose (Rhizoprionodon Terraenovae) Jaw, Rileigh Gonzalez, David Kerstetter
Atlantic Sharpnose (Rhizoprionodon Terraenovae) Jaw, Rileigh Gonzalez, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
First Record Of Nesting Ecology And Tumor-Forming Disease In Endangered Green Turtles (Chelonia Mydas) On Taiping Island, Taiwan, Tsung-Hsien Li, Po-Yu Wu, Ming-An Tsai
First Record Of Nesting Ecology And Tumor-Forming Disease In Endangered Green Turtles (Chelonia Mydas) On Taiping Island, Taiwan, Tsung-Hsien Li, Po-Yu Wu, Ming-An Tsai
The Thai Journal of Veterinary Medicine
Taiping Island is an important sea turtle nesting site in Taiwan. However, information on the nesting ecology on Taiping Island is still limited. The present study was conducted between 26 April and 3 June 2023 with the objective of collecting primary data on the sea turtle species that nest on the island. A total of 20 individual nesting green turtles were identified. No other sea turtle species were recorded nesting during this period. Five percent of nesting sea turtles had external tumors. The mean curved carapace length of all nesting female turtles was 98.2 cm. A total of 28 clutches …
(Winter Skate (Leucoraja Ocellata)) Jaw, Michael A. Birnbaum, David Kerstetter
(Winter Skate (Leucoraja Ocellata)) Jaw, Michael A. Birnbaum, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Diversification Of Avifauna In The Darién Highland Region: Ecological Niche Modeling, Phylogeography And Morphology To Explore Speciation In The Montane Species Myadestes Coloratus, Chlorospingus Tacarcunae And Margarornis Bellulus., Jorge L. Garzon Vasquez Mrs
Diversification Of Avifauna In The Darién Highland Region: Ecological Niche Modeling, Phylogeography And Morphology To Explore Speciation In The Montane Species Myadestes Coloratus, Chlorospingus Tacarcunae And Margarornis Bellulus., Jorge L. Garzon Vasquez Mrs
Theses and Dissertations
Montane regions in the Neotropics are hotspots of endemism and biodiversity, yet their species are especially vulnerable to the impacts of climate change and geographic isolation. This thesis investigates the evolutionary and ecological dynamics of three bird species endemic to the Darién Highlands of eastern Panama: Myadestes coloratus, Chlorospingus tacarcunae, and Margarornis bellulus. Through an integrative approach combining ecological niche modeling, morphometric analysis, and genomic data from ultraconserved elements (UCEs) and mitochondrial DNA, the study explores the historical biogeography, current distribution patterns, population structure, and phenotypic differentiation of these montane taxa. Ecological niche models revealed that suitable habitat …
If You Give A Tadpole A Chemosensory Stimulus: Detection Of Invasive Predatory Cues And Signs Of Conspecific Communication In Pseudacris Sierra Tadpoles, Faben Tesfazion
If You Give A Tadpole A Chemosensory Stimulus: Detection Of Invasive Predatory Cues And Signs Of Conspecific Communication In Pseudacris Sierra Tadpoles, Faben Tesfazion
Scripps Senior Theses
Amphibians are at disproportionately higher risks of extinction than all other vertebrate classes, and a major causing factor is invasive predation. The American bullfrog (Lithobates catesbeianus), native to Eastern North America, is a notorious invasive species which preys on native Sierran treefrogs (Pseudacris sierra) in Northern and Central California. These treefrogs have yet to be placed on any Special Animals List, suggesting the presence of adopted behaviors against predation. Past studies have documented the importance of chemical sensing in anuran tadpoles as predator detection tools. This study tests if Sierran treefrog tadpoles can recognize invasive chemical …
‘Who’S Your Daddy?’: Ddradseq Parentage In Broodstock-Offspring Pairs Of Diadema Antillarum In A Population Restoration Initiative, Bianca R. Rosendahl
‘Who’S Your Daddy?’: Ddradseq Parentage In Broodstock-Offspring Pairs Of Diadema Antillarum In A Population Restoration Initiative, Bianca R. Rosendahl
Undergraduate Scholarship and Creative Works
In the early 1980s Diadema antillarum, or the long-spined urchin, was hit by a catastrophic mass mortality event across the western Atlantic and Gulf of Mexico, inclusive of the Florida Keys. The cause of this die-off event was likely triggered by a pathogen or environmental stressor that decimated native populations by up to 98%. The species has not yet fully recovered and is struggling with recruitment success which is why it may benefit from an ex-situ recovery program. In this study, I used single nucleotide polymorphisms (SNPs) to identify genetic variation and analyze parentage in a captive population of …
Comparative Semiotic Analysis Of Non-Verbal Communication: Apis Mellifera Waggle Dance And Human Kinesic Signaling Systems, Nishtha Tikalal
Comparative Semiotic Analysis Of Non-Verbal Communication: Apis Mellifera Waggle Dance And Human Kinesic Signaling Systems, Nishtha Tikalal
Honors Undergraduate Theses
There are many parallels between two seemingly disparate forms of non-verbal communication: the waggle dance of Apis mellifera (honeybees) and human kinesic signaling systems. Through a comparative semiotic analysis, this research aims to conduct a comparative semiotic analysis, investigating structural and functional similarities between these communication methods, challenging anthropocentric assumptions about meaning making in the natural world. This research employs a meta-synthesis approach, drawn from a methodological literature review to examine historical representations of bee-human relationships, semiotics of non-verbal communication, and the specific mechanisms of the waggle dance and human kinesics. This methodology involves systematic categorization and analysis of extracted …
The Prize Biter Of Modernity? Investigating Killer Whale Bite Mechanics, Daniel Hong
The Prize Biter Of Modernity? Investigating Killer Whale Bite Mechanics, Daniel Hong
West Chester University Graduate Theses, Dissertations, and Final Projects
Although the killer whale (Orcinus orca) is a cosmopolitan apex predator, very little work has been done on its feeding biomechanics. Here I use finite element analysis to investigate the mandibular stiffness of a juvenile male Bigg’s killer whale, and compare it to that of the false killer whale (Pseudorca crassidens) and the saltwater crocodile (Crocodylus porosus). Full mandibles and left and right halves of mandibles are simulated under FEA. I also estimate the total jaw muscle force produced by the Bigg’s killer whale using the dry skull method. The killer whale lacks an …
Technological Accessibility For Wildlife Telemetry Research, Andrew Danielson
Technological Accessibility For Wildlife Telemetry Research, Andrew Danielson
The Journal of Purdue Undergraduate Research
Over the course of two years, I conducted original research into improving accessibility for researchers in the field of wildlife telemetry. Wildlife telemetry is a technique used by biologists to track wildlife in the field, which requires the biologist to attach a small radio transmitter to an animal, usually using a specially designed collar, harness, or another means. These transmitters are battery powered and will emit or transmit a regularly timed radio signal that can be received by radio receivers carried by the researchers. Two issues faced by wildlife telemetry researchers are the cost of wildlife telemetry equipment and the …
Study Of The Brain Anatomy Of Three Extinct Marsupials: Thylacinus Cynocephalus, Thylacoleo Carnifex, And Silvabestius Johnnilandi, Francisco Garcia
Study Of The Brain Anatomy Of Three Extinct Marsupials: Thylacinus Cynocephalus, Thylacoleo Carnifex, And Silvabestius Johnnilandi, Francisco Garcia
Honors Program Theses and Research Projects
Marsupials are pouched mammals that today are mainly found in Australasia and South America. Marsupials have proven to be quite intriguing to evolutionary biologists who note how some marsupials resemble placentals in anatomy due to convergent evolution, with both marsupials and placentals filling similar niches in their respective environments. As of today, studies interested in marsupial brain evolution have published descriptions of cranial endocasts for several species of marsupials, with the number of descriptions seeing a massive boost over the last 20 years with the arrival of CT imaging technology. However, no comprehensive study of brain evolution in marsupials has …