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Articles 31 - 60 of 144
Full-Text Articles in Life Sciences
Tracing The Human-Avian Relationship In Iceland, Melanie Sua
Tracing The Human-Avian Relationship In Iceland, Melanie Sua
Theses and Dissertations
An in-depth investigation explores the history of birds in Iceland and the interaction between birds and humans from the 9th through the 19th century, with the help of archaeological evidence, traditional and historical materials.
Spatiotemporal Genetic Diversity Of Lions Reveals The Influence Of Habitat Fragmentation Across Africa, Caitlin J. Curry, Brian W. Davis, Laura D. Bertola, Paula A. White, William J. Murphy, James N. Derr
Spatiotemporal Genetic Diversity Of Lions Reveals The Influence Of Habitat Fragmentation Across Africa, Caitlin J. Curry, Brian W. Davis, Laura D. Bertola, Paula A. White, William J. Murphy, James N. Derr
Publications and Research
Direct comparisons between historical and contemporary populations allow for detecting changes in genetic diversity through time and assessment of the impact of habitat fragmentation. Here, we determined the genetic architecture of both historical and modern lions to document changes in genetic diversity over the last century. We surveyed microsatellite and mitochondrial genome variation from 143 high-quality museum specimens of known provenance, allowing us to directly compare this information with data from several recently published nuclear and mitochondrial studies. Our results provide evidence for male-mediated gene flow and recent isolation of local subpopulations, likely due to habitat fragmentation. Nuclear markers showed …
Using Object-Choice Tasks To Investigate Sensory Perception In Sunda Pangolins (Manis Javanica), Joshua Dipaola
Using Object-Choice Tasks To Investigate Sensory Perception In Sunda Pangolins (Manis Javanica), Joshua Dipaola
Theses and Dissertations
Pangolins are one of the most heavily poached, yet least understood mammals in the world. In this study, we used an object-choice task to assess the ecological relevance and use of sensory information in Sunda pangolin foraging behavior. This is the first controlled experiment on pangolin behavior to our knowledge.
The Whelming Sea, Sean Hanley
The Whelming Sea, Sean Hanley
Theses and Dissertations
The Whelming Sea is a thirty-minute experimental documentary that reveals the moments of entanglement between three animals living along the Mid-Atlantic shoreline; curious humans, spawning horseshoe crabs, and migratory shorebirds. Working from the realm of multispecies ethnography, the film shifts the subjective positioning of the viewer between the human and nonhuman to suggest the complexity of our enmeshed experience. In the face of this current era of mass extinction, the film explores the limitations and poetic possibilities of scientific encounters with the lives of others.
Multivariate Analysis Of Open Field Exploration Identifies Latent Spatial And Social Behavioral Axes In Domestic Dogs, Budhaditya Chowdhury, Moira Van Staaden, Robert Huber
Multivariate Analysis Of Open Field Exploration Identifies Latent Spatial And Social Behavioral Axes In Domestic Dogs, Budhaditya Chowdhury, Moira Van Staaden, Robert Huber
Advanced Science Research Center
Recent methodological advances in studying large scale animal movements have let researchers gather rich datasets from behaving animals. Often collected in small sample sizes due to logistical constraints, these datasets are however, ideal for multivariate explorations into behavioral complexity. In behavioral studies of domestic dogs, although automated data loggers have recently seen increasing use, a comprehensive framework to identify complex behavioral axes is lacking. Dog behavioral studies frequently rely on subjective ratings, despite demonstrable evidence that these are insufficient for identifying behavioral variables. Taking advantage of dogs’ innate running abilities and readily available GPS data loggers, we extracted latitude-longitude coordinates …
Elucidation Of Putative Binding Partners For The Protein Encoded By Orf149 Of Cyprinid Herpesvirus 3 In Goldfish (Carassius Auratus), Simon Menanteau–Ledouble, Michael Gotesman, Ebrahim Razzazi‐Fazeli, Sven M. Bergmann, Mansour El‐Matbouli
Elucidation Of Putative Binding Partners For The Protein Encoded By Orf149 Of Cyprinid Herpesvirus 3 In Goldfish (Carassius Auratus), Simon Menanteau–Ledouble, Michael Gotesman, Ebrahim Razzazi‐Fazeli, Sven M. Bergmann, Mansour El‐Matbouli
Publications and Research
No abstract provided.
Feeding The Future Meat Doesn’T Come Cheap, Lukas C. Southard
Feeding The Future Meat Doesn’T Come Cheap, Lukas C. Southard
Capstones
Cultured – or as it is referred to by companies innovating the technology clean – meat is expected to be the next innovation to change the way the world gets its animal protein. Meat from animal cells grown in a lab seems like science fiction but it is around the corner from hitting your supermarket shelves. The technology has been developed but how these companies intend on scaling up their production to meet retail demands remains a mystery. So far companies have relied on seed and early stage investment from venture capital companies and private sources to fund research. Predictions …
Sensory Perception, Adrian Rodriguez-Contreras
Sensory Perception, Adrian Rodriguez-Contreras
Open Educational Resources
Different types of sensory systems with their functional modalities will be presented. The biological bases for how these functions are generated and modified will then be described. As vision is the principal means of perception, we will focus in this course most on visual processing. Scientific data will be integrated into the lectures, such that students develop critical skills in analyzing data and proposing hypotheses.
Contagious Yawning In The Domestic Cat (Felis Catus), Ariel M. Lombardo Aghishian
Contagious Yawning In The Domestic Cat (Felis Catus), Ariel M. Lombardo Aghishian
Theses and Dissertations
This study investigates contagious yawning in domestic cats towards their owners, looking at potential links with empathy. Results showed no significant difference in yawning between conditions. The solitary nature of wildcats and their shared ancestor, and the unique social behavior in domesticated cats may explain these findings.
Observation Of Visitors At A Chimpanzee (Pan Troglodytes Schweinfurthii) Ecotourism Site Reveals Opportunity For Multiple Modes Of Pathogen Transmission, Darcey Glasser
Theses and Dissertations
Chimpanzee (Pan troglodytes) tracking is a popular ecotourism activity across Sub-Saharan Africa, offering visitors a personal wildlife experience. However, chimpanzee ecotourism may increase the risk of disease transmission between chimpanzees and people. This study assessed how tourist behaviors might facilitate cross-species disease transmission in Kibale National Park, Uganda.
Stabilizing Forces In Acoustic Cultural Evolution: Comparing Humans And Birds, Daniel C. Mann
Stabilizing Forces In Acoustic Cultural Evolution: Comparing Humans And Birds, Daniel C. Mann
Dissertations, Theses, and Capstone Projects
Learned acoustic communication systems, like birdsong and spoken human language, can be described from two seemingly contradictory perspectives. On one hand, learned acoustic communication systems can be remarkably consistent. Substantive and descriptive generalizations can be made which hold for a majority of populations within a species. On the other hand, learned acoustic communication systems are often highly variable. The degree of variation is often so great that few, if any, substantive generalizations hold for all populations in a species.
Within my dissertation, I explore the interplay of variation and uniformity in three vocal learning species: budgerigars (Melopsittacus undulatus), …
Hiding In The Lianas Of The Tree Of Life: Molecular Phylogenetics And Species Delimitation Reveal Considerable Cryptic Diversity Of New World Vine Snakes, Robert C. Jadin, Christopher Blair, Michael J. Jowers, Anthony Carmona, John C. Murphy
Hiding In The Lianas Of The Tree Of Life: Molecular Phylogenetics And Species Delimitation Reveal Considerable Cryptic Diversity Of New World Vine Snakes, Robert C. Jadin, Christopher Blair, Michael J. Jowers, Anthony Carmona, John C. Murphy
Publications and Research
The Brown Vine Snake, Oxybelis aeneus, is considered a single species despite the fact its distribution covers an estimated 10% of the Earth’s land surface, inhabiting a variety of ecosystems throughout North, Central, and South America and is distributed across numerous biogeographic barriers. Here we assemble a multilocus molecular dataset (i.e. cyt b, ND4, cmos, PRLR) derived from Middle American populations to examine for the first time the evolutionary history of Oxybelis and test for evidence of cryptic lineages using Bayesian and maximum likelihood criteria. Our divergence time estimates suggest that Oxybelis diverged from its sister genus, Leptophis …
Cognitive Models Of Defense Behaviors In Hosts Of Brood Parasites, Thomas J. Manna
Cognitive Models Of Defense Behaviors In Hosts Of Brood Parasites, Thomas J. Manna
Dissertations, Theses, and Capstone Projects
Social parasites exploit the behavioral repertoire of their hosts for their own benefit, thereby reducing host reproductive success. Whether and how hosts respond to prevent, reduce, or eliminate the costs of parasitism requires the characterization of host cognitive algorithms in response to parasites. In this dissertation, I review the suite of the defense behaviors and decision rules of hosts targeted by avian and insect brood parasites, and present new experimental data on the detection of parasitism through the visual system of focal host species. In Chapter 1, I review extensive data already accumulated to isolate the cognitive mechanisms used by …
Use Of Plumage And Gular Pouch Color To Evaluate Condition Of Oil Spill Rehabilitated California Brown Pelicans (Pelecanus Occidentalis Californicus) Post-Release, Deborah L. Jaques, Kyra L. Mills, Barton G. Selby, Richard R. Veit, Michael H. Ziccardi
Use Of Plumage And Gular Pouch Color To Evaluate Condition Of Oil Spill Rehabilitated California Brown Pelicans (Pelecanus Occidentalis Californicus) Post-Release, Deborah L. Jaques, Kyra L. Mills, Barton G. Selby, Richard R. Veit, Michael H. Ziccardi
Publications and Research
Sublethal effects of oil spills may dampen seabird rehabilitation success due to lingering negative impacts of contamination and stress on reproduction and long-term survival. These effects can be difficult to measure while birds are in care as well as once birds are released. Expression of sexually selected traits that are sensitive to condition can provide information on physiological status of birds. We evaluated plumage molt and gular pouch skin color of California brown pelicans (Pelecanus occidentalis californicus) following oil contamination and rehabilitation to test for differences between previously oiled and rehabilitated (post-spill) and presumably uncontaminated pelicans. Post-spill pelicans released with …
Lab‐Grown Meat And Veganism: A Virtue‐Oriented Perspective, Carlo Alvaro
Lab‐Grown Meat And Veganism: A Virtue‐Oriented Perspective, Carlo Alvaro
Publications and Research
The project of growing meat artificially represents for some the next best thing to humanity. If successful, it could be the solution to several problems, such as feed- ing a growing global population while reducing the environmental impact of raising animals for food and, of course, reducing the amount and degree of animal cruelty and suffering that is involved in animal farming. In this paper, I argue that the issue of the morality of such a project has been framed only in terms of the best conse- quences for the environment, animals, and humans, or in terms of deontic princi- …
The Influence Of Pointing Accuracy In An Object-Choice Task With Domestic Horses (Equus Caballus), Elizabeth A. Krisch
The Influence Of Pointing Accuracy In An Object-Choice Task With Domestic Horses (Equus Caballus), Elizabeth A. Krisch
Theses and Dissertations
This study evaluated the influence of pointing accuracy and experimenter identity on domestic horse (Equus caballus) behavior in an object-choice task. Results suggest that after receiving inaccurate pointing cues, horses adapt their responses based on their familiarity with an experimenter, and exhibit signs of memory retention across test trials.
Dolphins In Space: Quantifying The Relative Positions Of Bottlenose Dolphins (Tursiops Truncatus), Megan S. Mcgrath
Dolphins In Space: Quantifying The Relative Positions Of Bottlenose Dolphins (Tursiops Truncatus), Megan S. Mcgrath
Theses and Dissertations
Bottlenose dolphins (Tursiops truncatus) are socially sophisticated mammals with high fission-fusion dynamics and complex communication. The relative positioning of individual dolphins as they swim within their social group may aid in the expression of social roles. This study sought to quantify relative positioning in a small social group of female bottlenose dolphins at the National Aquarium in Baltimore that included two mother-daughter pairs, maternal and paternal half-sisters, a half-aunt and niece, and one unrelated female. We devised a method for scoring relative positioning in three dimensions. We found that the two mothers and their juvenile and adult daughters …
The Effects Of Tactile And Visual Deterrents On Honey Badger Predation Of Beehives, Abigail S. Johnson
The Effects Of Tactile And Visual Deterrents On Honey Badger Predation Of Beehives, Abigail S. Johnson
Theses and Dissertations
As human and elephant populations grow in Kenya so does human-elephant conflict. One of the most substantial contributors to this conflict, the crop-raiding behavior of elephants (Loxodonta africana), is alleviated through the use of Elephants and Bee Project's beehive fences. A threat to these beehives are the honey badgers (Mellivora capensis) who try to obtain honey, causing damage to the hive and the hive to abscond. The objective of this study was to improve the effectiveness of these beehive fences through identifying and testing novel honey badger deterrent methods. On-farm experiments in Taita Taveta County, Kenya …
The Morphology And Evolution Of The Primate Brachial Plexus, Brian M. Shearer
The Morphology And Evolution Of The Primate Brachial Plexus, Brian M. Shearer
Dissertations, Theses, and Capstone Projects
Primate evolutionary history is inexorably linked to the evolution of a broad array of locomotor adaptations that have facilitated the clade’s invasion of new niches. Researchers studying the evolution of primates and of their individual locomotor adaptations have traditionally relied on bony morphology – a practical choice given the virtual non-existence of any other type of tissue in the fossil record. However, this focus downplays the potential importance of the many other structures involved in locomotion, such as muscle, cartilage, and neural tissue, which may each be influenced by separate selective forces because of their different roles in facilitating movement. …
Using Physical Contact Heterogeneity And Frequency To Characterize Dynamics Of Human Exposure To Nonhuman Primate Bodily Fluids In Central Africa, Victor Narat, Mamdou Kampo, Thibut Heyer, Stephanie Rupp, Philippe Ambata, Richard Njouom, Tamara Giles-Vernick
Using Physical Contact Heterogeneity And Frequency To Characterize Dynamics Of Human Exposure To Nonhuman Primate Bodily Fluids In Central Africa, Victor Narat, Mamdou Kampo, Thibut Heyer, Stephanie Rupp, Philippe Ambata, Richard Njouom, Tamara Giles-Vernick
Publications and Research
Emerging infectious diseases of zoonotic origin constitute a recurrent threat to global health. Nonhuman primates (NHPs) occupy an important place in zoonotic spillovers (pathogenic transmissions from animals to humans), serving as reservoirs or amplifiers of multiple neglected tropical diseases, including viral hemorrhagic fevers and arboviruses, parasites and bacteria, as well as retroviruses (simian foamy virus, PTLV) that are pathogenic in human beings. Hunting and butchering studies in Africa characterize at-risk human social groups, but overlook critical factors of contact heterogeneity and frequency, NHP species differences, and meat processing practices. In southeastern Cameroon, a region with a history of zoonotic emergence …
Effects Of Urbanization On The Foraging Ecology And Microbiota Of The Generalist Seabird Larus Argentatus, Matthew Fuirst, Richard R. Veit, Megan Hahn, Nolwenn Dheilly, Lesley H. Thorne
Effects Of Urbanization On The Foraging Ecology And Microbiota Of The Generalist Seabird Larus Argentatus, Matthew Fuirst, Richard R. Veit, Megan Hahn, Nolwenn Dheilly, Lesley H. Thorne
Publications and Research
Larus gull species have proven adaptable to urbanization and due to their generalist feeding behaviors, they provide useful opportunities to study how urban environments impact foraging behavior and host-associated microbiota. We evaluated how urbanization influenced the foraging behavior and microbiome characteristics of breeding herring gulls (Larus argentatus) at three different colonies on the east coast of the United States. Study colonies represented high, medium and low degrees of urbanization, respectively. At all colonies, gulls frequently foraged at landfills and in other urban environments, but both the use of urban environments and gull foraging metrics differed with the degree of urbanization. …
The New World Of Pet Prosthetics, Anna Brooks
The New World Of Pet Prosthetics, Anna Brooks
Capstones
When an abandoned dog was found in Brooklyn with his paw gnawed off, the animal shelter had two options: amputate the leg, or put the dog down. But neither seemed like a solution. So they decided to do something different, and fit the dog for a prosthetic leg. Prosthetics for people have been around for millennia, and now these devices are moving into the animal kingdom. This story explores the new world of animal prosthetics, and how these devices have changed the lives of animals like Mr. Stubbs — the first alligator with a prosthetic tail — and saved the …
Gofish: A Versatile Nested Pcr Strategy For Environmental Dna Assays For Marine Vertebrates, Mark Y. Stoeckle, Mithun Das Mishu, Zachary Charlop-Powers
Gofish: A Versatile Nested Pcr Strategy For Environmental Dna Assays For Marine Vertebrates, Mark Y. Stoeckle, Mithun Das Mishu, Zachary Charlop-Powers
Publications and Research
Here we describe GoFish, a strategy for single-species environmental DNA (eDNA) presence/absence assays using nested PCR. The assays amplify a mitochondrial 12S rDNA segment with vertebrate metabarcoding primers, followed by nested PCR with M13-tailed, species-specific primers. Sanger sequencing confirms positives detected by gel electrophoresis. We first obtained 12S sequences from 77 fish specimens for 36 northwestern Atlantic taxa not well documented in GenBank. Using these and existing 12S records, we designed GoFish assays for 11 bony fish species common in the lower Hudson River estuary and tested seasonal abundance and habitat preference at two sites. Additional assays detected nine cartilaginous …
Cryptic Diversity In The Mexican Highlands: Thousands Of Uce Loci Help Illuminate Phylogenetic Relationships, Species Limits And Divergence Times Of Montane Rattlesnakes (Viperidae: Crotalus ), Christopher Blair, Robert W. Bryson Jr, Charles W. Linkem, David Lazcano, John Klicka, John E. Mccormack
Cryptic Diversity In The Mexican Highlands: Thousands Of Uce Loci Help Illuminate Phylogenetic Relationships, Species Limits And Divergence Times Of Montane Rattlesnakes (Viperidae: Crotalus ), Christopher Blair, Robert W. Bryson Jr, Charles W. Linkem, David Lazcano, John Klicka, John E. Mccormack
Publications and Research
With the continued adoption of genome‐scale data in evolutionary biology comes the challenge of adequately harnessing the information to make accurate phylogenetic inferences. Coalescent‐based methods of species tree inference have become common, and concatenation has been shown in simulation to perform well, particularly when levels of incomplete lineage sorting are low. However, simulation conditions are often overly simplistic, leaving empiricists with uncertainty regarding analytical tools. We use a large ultraconserved element data set (>3,000 loci) from rattlesnakes of the Crotalus triseriatus group to delimit lineages and estimate species trees using concatenation and several coalescent‐based methods. Unpartitioned and partitioned maximum …
Different Ommochrome Pigment Mixtures Enable Sexually Dimorphic Batesian Mimicry In Disjunct Populations Of The Common Palmfly Butterfly, Elymnias Hypermnestra, Silvio Panettieri, Erisa Gjinaj, George John, David J. Lohman
Different Ommochrome Pigment Mixtures Enable Sexually Dimorphic Batesian Mimicry In Disjunct Populations Of The Common Palmfly Butterfly, Elymnias Hypermnestra, Silvio Panettieri, Erisa Gjinaj, George John, David J. Lohman
Publications and Research
With varied, brightly patterned wings, butterflies have been the focus of much work on the evolution and development of phenotypic novelty. However, the chemical structures of wing pigments from few butterfly species have been identified. We characterized the orange wing pigments of female Elymnias hypermnestra butterflies (Lepidoptera: Nymphalidae: Satyrinae) from two Southeast Asian populations. This species is a sexually dimorphic Batesian mimic of several model species. Females are polymorphic: in some populations, females are dark, resemble conspecific males, and mimic Euploea spp. In other populations, females differ from males and mimic orange Danaus spp. Using LC-MS/MS, we identified nine ommochrome …
An Investigation Of Vocal Learning Propensity In Zebra Finch (Taeniopygia Guttata), Tatsuya Hayashi
An Investigation Of Vocal Learning Propensity In Zebra Finch (Taeniopygia Guttata), Tatsuya Hayashi
Theses and Dissertations
The investigator attempted to predict the vocal learning propensity from either family pedigree or early vocal babbling (subsong). Pedigree trees suggest the possibility that vocal learning ability may depend on family. We failed to predict vocal learning propensity from subsong, but suggested that subsong may influence vocal learning outcome.
Nanostructured Fibers As A Versatile Photonic Platform: Radiative Cooling And Waveguiding Through Transverse Anderson Localization, Norman Nan Shi, Cheng-Chia Tsai, Michael J. Carter, Jyotirmoy Mandal, Adam C. Overvig, Matthew Y. Sfeir, Ming Lu, Catherine L. Craig, Gary D. Bernard, Yuan Yang, Nanfang Yu
Nanostructured Fibers As A Versatile Photonic Platform: Radiative Cooling And Waveguiding Through Transverse Anderson Localization, Norman Nan Shi, Cheng-Chia Tsai, Michael J. Carter, Jyotirmoy Mandal, Adam C. Overvig, Matthew Y. Sfeir, Ming Lu, Catherine L. Craig, Gary D. Bernard, Yuan Yang, Nanfang Yu
Publications and Research
Broadband high reflectance in nature is often the result of randomly, three-dimensionally structured materials. This study explores unique optical properties associated with one-dimensional nanostructures discovered in silk cocoon fibers of the comet moth, Argema mittrei. The fibers are populated with a high density of air voids randomly distributed across the fiber cross-section but are invariant along the fiber. These filamentary air voids strongly scatter light in the solar spectrum. A single silk fiber measuring ~50 μm thick can reflect 66% of incoming solar radiation, and this, together with the fibers' high emissivity of 0.88 in the mid-infrared range, allows …
A New Age In Aquamedicine: Unconventional Approach In Studying Aquatic Diseases, Michael Gotesman, Simon Menanteau-Ledouble, Mona Saleh, Sven M. Bergmann, Mansour El-Matbouli
A New Age In Aquamedicine: Unconventional Approach In Studying Aquatic Diseases, Michael Gotesman, Simon Menanteau-Ledouble, Mona Saleh, Sven M. Bergmann, Mansour El-Matbouli
Publications and Research
Background
Marine and aquaculture industries are important sectors of the food production and global trade. Unfortunately, the fish food industry is challenged with a plethora of infectious pathogens. The freshwater and marine fish communities are rapidly incorporating novel and most up to date techniques for detection, characterization and treatment strategies. Rapid detection of infectious diseases is important in preventing large disease outbreaks.
Main text
One hundred forty-six articles including reviews papers were analyzed and their conclusions evaluated in the present paper. This allowed us to describe the most recent development research regarding the control of diseases in the aquatic environment …
Social Influences On Songbird Behavior: From Song Learning To Motion Coordination, Iva Ljubičić
Social Influences On Songbird Behavior: From Song Learning To Motion Coordination, Iva Ljubičić
Dissertations, Theses, and Capstone Projects
Social animals learn during development how to integrate successfully into their group. How do social interactions combine to maintain group cohesion? We first review how social environments can influence the development of vocal learners, such as songbirds and humans (Chapter 1). To bypass the complexity of natural social interactions and gain experimental control, we developed Virtual Social Environments, surrounding the bird with videos of manipulated playbacks. This way we were able to design sensory and social scenarios and test how social zebra finches adjust their behavior (Chapters 2 & 3). A serious challenge is that the color output of a …
Precocious Development Of Self-Awareness In Dolphins, Rachel Morrison, Diana Reiss
Precocious Development Of Self-Awareness In Dolphins, Rachel Morrison, Diana Reiss
Publications and Research
Mirror-self recognition (MSR) is a behavioral indicator of self-awareness in young children and only a few other species, including the great apes, dolphins, elephants and magpies. The emergence of self-awareness in children typically occurs during the second year and has been correlated with sensorimotor development and growing social and self-awareness. Comparative studies of MSR in chimpanzees report that the onset of this ability occurs between 2 years 4 months and 3 years 9 months of age. Studies of wild and captive bottlenose dolphins (Tursiops truncatus) have reported precocious sensorimotor and social awareness during the first weeks of life, but no …