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- West Virginia (18)
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- Cabell County (4)
- Ecology (4)
- Ohio River (4)
- Salamander (4)
- Salamanders (4)
- <p>Eastern diamondback rattlesnake.</p> <p>Habitat (Ecology)</p> (3)
- <p>Plesiosauria.</p> (3)
- Crotalus adamanteus (3)
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- Habitat selection (3)
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- <p>Salamanders - West Virginia.</p> (2)
- <p>Salamanders -- West Virginia.</p> <p>Salamanders -- Habitat.</p> <p>Giant salamanders -- Habitat.</p> (2)
- Ambush site selection (2)
- Amphibian (2)
- Anuran (2)
- Aquatic (2)
- Automated recording systems (ARS) (2)
- Bacteria (2)
- Breeding calls (2)
- Eastern Box Turtle (2)
- Fathead Minnow (2)
- Foraging (2)
Articles 1 - 30 of 191
Full-Text Articles in Life Sciences
Factors Associated With Acoustic Bat Presence During Spring Emergence In The Appalachian Mountains Of Western Virginia, Emily Kirk Pody
Factors Associated With Acoustic Bat Presence During Spring Emergence In The Appalachian Mountains Of Western Virginia, Emily Kirk Pody
Theses, Dissertations and Capstones
Studies of threats that bats face during hibernation have increased in response to white-nose syndrome (WNS), a fungal disease that has ravaged North American bat populations. However, impacts of WNS on bat ecology during spring emergence, when bats are potentially recovering from infection and allocating resources for reproduction, is relatively understudied. As more bat species become listed at the federal and state level, the need to understand the factors associated with spring emergence is critical for improving conservation guidelines and habitat management practices. Acoustic monitoring is an efficient method for monitoring bat presence for prolonged periods of time, giving biologists …
Mortality Risk Associated With Urban Land Use For Adult Eastern Diamondback Rattlesnakes (Crotalus Adamanteus), Mya Wiles
Theses, Dissertations and Capstones
Snakes have been a traditionally under-represented organism in urban ecology, but they face similar, if not greater challenges in the face of growing urban sprawl. Eastern diamondback rattlesnakes (Crotalus adamanteus, EDBs) are under consideration for listing under the Endangered Species Act due to population declines resulting from historical human persecution and habitat loss. This study used radio-telemetry data from a long-term monitoring project of adult EDBs on a developed sea island in South Carolina, USA. I reclassified a National Land Cover Dataset to reflect relative mortality risk for snakes attempting to move through the landscape. High-risk cover types …
Application Of Confocal Microscopy To Study The Neural Mechanisms Underlying Insect And Rodent Behavior, Christian Michelle Harris
Application Of Confocal Microscopy To Study The Neural Mechanisms Underlying Insect And Rodent Behavior, Christian Michelle Harris
Theses, Dissertations and Capstones
Posture and walking require support of the body weight, which is thought to be detected by sensory receptors in the legs. Specificity in sensory encoding occurs through the morphological properties of the sense organs (numerical distribution, receptor size) and their physiological response characteristics. These studies focus upon campaniform sensilla, receptors that detect forces as strains in the insect exoskeleton. To study the morphology of campaniform sensilla, the sites of mechanotransduction (cuticular caps) were imaged by light and confocal microscopy in four species (stick insects, cockroaches, blow flies and Drosophila). These data indicate that the gradient (range) of cap sizes may …
Fish Community Trends In The Greenup Pool, Ohio River, Nathaniel Kingsley Fleshman
Fish Community Trends In The Greenup Pool, Ohio River, Nathaniel Kingsley Fleshman
Theses, Dissertations and Capstones
Bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix), collectively referred to as Asian carps, are invasive species that may negatively affect native species through plankton resource exploitation mechanisms. Bighead and silver carp escaped into the Mississippi River basin in the early 1970s and have been steadily migrating upstream. The Greenup Pool lies upstream of the current known invasion of Asian carp in the Ohio River. The Ohio River Valley Water Sanitation Commission (ORSANCO) has conducted probabilistic electrofishing community surveys in the Greenup Pool since 2006 on a five-year cycle. The objective of this study was …
Seasonal Variation In Home-Range And Core-Area Size In Verreaux's Sifaka, Brynn Harshbarger
Seasonal Variation In Home-Range And Core-Area Size In Verreaux's Sifaka, Brynn Harshbarger
Theses, Dissertations and Capstones
Primates living in seasonal forests must adapt to extreme fluctuation in resource availability. Verreaux’s sifaka ( ) live in Madagascar’s highly seasonal tropical dry forests and experience periods of extreme resource abundance and scarcity. Home- range and core-area size were measured using 95% and 50% kernel estimation, and 95% minimum convex polygons to compare seasonal shifts in space use based on resource availability. There have been no long-term space use studies on Verreaux’s sifaka; therefore, we do not know how their space use changes over time in an environment which is both highly seasonal and highly variable. Our study leverages …
Assessing The Toxicity Of A Reconstituted Water Simulating Streams Influenced By Mountaintop Mining In Central Appalachia, Benjamin David Browning
Assessing The Toxicity Of A Reconstituted Water Simulating Streams Influenced By Mountaintop Mining In Central Appalachia, Benjamin David Browning
Theses, Dissertations and Capstones
Freshwater ecosystems in Central Appalachia experience increased concentrations of manganese (Mn) and total dissolved solids from the runoff of surface mines and valley fills. Biological communities have been impacted by these surface mining operations and it has been suggested that the increase in total dissolved solids may contribute to these negative effects, but standard laboratory toxicity tests have not found increased concentrations of total dissolved solids to have such negative effects as seen in the field. The elevated total dissolved solids in mining influenced streams may only be toxic in conjunction with another toxicant that is presence in these systems …
An Exceptionally Small New Polycotylid Plesiosaur (Reptilia: Sauropterygia) With Raptorial Eyes From The Western Interior Seaway Of North America, Robert O’Brien Clark
An Exceptionally Small New Polycotylid Plesiosaur (Reptilia: Sauropterygia) With Raptorial Eyes From The Western Interior Seaway Of North America, Robert O’Brien Clark
Theses, Dissertations and Capstones
Polycotylidae is a family of plesiosaurian marine reptiles that evolved during the Early Cretaceous and radiated into multiple genera during the Late Cretaceous, achieving a worldwide distribution. Derived polycotylids of the subclade Polycotylinae have a gracile and elongated rostrum, homodont dentition, an extended mandibular symphysis, and foreshortened temporal fenestrae. In this thesis, I describe a small and highly derived new polycotylid taxon based on three specimens from the Campanian of the Western Interior Seaway in North America. A high number of maxillary teeth, fused neural arches, propodials with well-defined facets, and heavily remodeled cortical bone indicate the specimens are adults, …
Foraging Strategy Plasticity In Fiordland Penguins (Eudyptes Pachyrhynchus): A Stable Isotope Approach, Jeffrey Wayne White
Foraging Strategy Plasticity In Fiordland Penguins (Eudyptes Pachyrhynchus): A Stable Isotope Approach, Jeffrey Wayne White
Theses, Dissertations and Capstones
Foraging ecology in the crested penguins (genus: Eudyptes) is an active area of research, with new techniques rapidly increasing our understanding of these charismatic species. The most common techniques to assess foraging ecology include stomach content analysis, fecal DNA analysis, stable isotope analysis, tracking, and video loggers. Here we review dietary research on all 8 taxa within the genus Eudyptes to identify gaps in our current knowledge. However, foraging studies that assess dietary segregation require a method for quickly and accurately sexing penguins in the field. Obvious sexual dimorphism in plumage is largely absent in penguins leaving behavioral cues …
Laboratory Investigation On The Effects Of Conductivity On The Sensitive Early Life Stages Of Fishes From The Appalachian Region, Logan Ryan Beach
Laboratory Investigation On The Effects Of Conductivity On The Sensitive Early Life Stages Of Fishes From The Appalachian Region, Logan Ryan Beach
Theses, Dissertations and Capstones
While it is known there is a link between land disturbance and elevations in ionic constituents in streams, the relationship between elevated conductivity and aquatic taxa impairment is harder to define. Multiple field studies demonstrating correlations between conductivity and fish or benthic macroinvertebrate communities have not described the mechanisms of impairment and impairment has not been demonstrated with traditional toxicity testing. In an effort to explore more sensitive sub-lethal endpoints for evaluation of instream effects of mining effluent, chronic toxicity testing was conducted on eggs and early life stages of trout species and the fathead minnow, utilizing a simulated mining …
The Effectiveness Of Long-Distance Translocation Of Eastern Diamondback Rattlesnakes (Crotalus Adamanteus), Allison Grace Kelley
The Effectiveness Of Long-Distance Translocation Of Eastern Diamondback Rattlesnakes (Crotalus Adamanteus), Allison Grace Kelley
Theses, Dissertations and Capstones
Translocations have the potential to aim conservation efforts as well as to reduce mortality caused by human activities. Eastern diamondback rattlesnakes (Crotalus adamanteus, EDB) have a limited ability to adapt to habitat loss and fragmentation due to the species’ slow life history and minimal dispersal ability. Because they are a venomous species, they are viewed as nuisance animals and are often killed on sight. We translocated a cohort of EDBs to investigate the potential of using translocations as a conservation and mitigation tool for this species. In July 2018, we translocated twelve adult eastern diamondback rattlesnakes from Parris …
Eastern Diamondback Rattlesnake (Crotalus Adamanteus) Ambush Site Selection In Coastal Saltwater Marshes, Emily Rebecca Mausteller
Eastern Diamondback Rattlesnake (Crotalus Adamanteus) Ambush Site Selection In Coastal Saltwater Marshes, Emily Rebecca Mausteller
Theses, Dissertations and Capstones
The eastern diamondback rattlesnake (Crotalus adamanteus; EDB) is a species of conservation concern associated with the imperiled longleaf pine-grassland ecosystem. The longleaf pine ecosystem is characterized by an open canopy and rich ground cover. Researchers have speculated that the vegetation structure of salt marshes may serve as a surrogate habitat for longleaf pine savannas. Although these marshes have little topography, they provide a heterogeneous landscape with patches of mud flats, sandy hard marsh along upper tidal areas, and salt marsh hummocks throughout. I used radio telemetry to monitor free-ranging EDBs on a South Carolina sea island. The goal of my …
Southern Fox Squirrel (Sciurus Niger Niger) Foraging Behavior And Population Dynamics, John Huang
Southern Fox Squirrel (Sciurus Niger Niger) Foraging Behavior And Population Dynamics, John Huang
Theses, Dissertations and Capstones
The change in the interaction between southern fox squirrel (Sciurus niger niger) and eastern gray squirrels (Sciurus carolinensis) provided an opportunity to examine sublethal effects of predation as it relates to a species’ risk perception and habitat structure at two scales. The interactions allowed us to examine the evolutionary responses of the southern fox squirrel and eastern gray squirrel to predation risk reflective of their historically associated landscapes and habitat structures. Second, the succession of savanna woodlands into closed-canopy mixed forest provided an opportunity to assess the flexible behaviors of both species in response to changes …
Description And Histology Of A Small-Bodied Elasmosaur And Discription Of Mortuneria Seyemourensis Postcranium, Elizabeth Lester
Description And Histology Of A Small-Bodied Elasmosaur And Discription Of Mortuneria Seyemourensis Postcranium, Elizabeth Lester
Theses, Dissertations and Capstones
Elasmosauridae is a monophyletic group of plesiosaurs that evolved in the Early Cretaceous and radiated to achieve a cosmopolitan distribution by the end of the Cretaceous. They were a highly successful group of deep sea predators with long necks, small heads, and stout four flippered bodies. Here we describe four postcranial elasmosaurs skeletons that were collected from the shallow marine Lopez de Bertodano formation located on Seymour Island of the Antarctic Peninsula. One specimen is a small-bodied elasmosaurs. Despite its small size it has several advanced ontogenetic character states including the fusion of neural spines to the vertebral centra. The …
Long-Term Effects Of Elevated Manganese On Procambarus Clarkii Behavior, Cody W. Lambert
Long-Term Effects Of Elevated Manganese On Procambarus Clarkii Behavior, Cody W. Lambert
Theses, Dissertations and Capstones
Manganese is a prominent heavy metal within the earth’s crust and a micro mineral essential for biological function, however, high level exposure may lead to neurological defects. Industrial activities allow elevated manganese (Mn2+)to enter air and waterways. The Environmental Protection Agency (EPA) implements secondary standards for aesthetics in drinking water at 0.05 ppm Mn2+, although evidence indicates levels at, or below this concentration negatively impact aquatic life. Crayfish (Procambarus clarkii) were exposed to environmentally relevant Mn2+ concentrations for 6 months, while the control group was kept in reconstituted fresh water for the same time period. …
Using Environmental Dna And Occupancy Modeling To Examine Drivers Of Eastern Hellbender Extirpation And Sampling Method Efficiency In West Virginia, Sean Michael Wineland
Using Environmental Dna And Occupancy Modeling To Examine Drivers Of Eastern Hellbender Extirpation And Sampling Method Efficiency In West Virginia, Sean Michael Wineland
Theses, Dissertations and Capstones
Amphibian population declines and range constrictions are widespread but poorly understood. Effective conservation planning relies on accurate distribution data to develop a fundamental understanding of causal changes in species distributions. However, conventional detection methods for cryptic and elusive amphibians suffer from imperfect detection. Environmental DNA (eDNA) has emerged as an innovative and powerful conservation tool for detecting aquatic species presence; however comparative studies aimed at fully understanding eDNA detection probabilities are lacking. In this study, I used environmental DNA (eDNA) sampling methods and detailed historical records to identify drivers of extirpation and sampling method efficiency for an imperiled, long-lived giant …
Southern Fox Squirrel (Sciurus Niger Niger) Translocation, Occupancy, And Foraging Behaviors, Katelyn Marie Amspacher
Southern Fox Squirrel (Sciurus Niger Niger) Translocation, Occupancy, And Foraging Behaviors, Katelyn Marie Amspacher
Theses, Dissertations and Capstones
Southern fox squirrels (SFSs) are habitat specialists within the longleaf pine ecosystem of the southeastern US whose populations are declining due to habitat fragmentation. Eastern gray squirrels (EGSs) are generalists found throughout the eastern US that have historically avoided competition with SFSs through habitat-partitioning. The purpose of this study was threefold: 1) use translocation as a conservation tool to establish a population of SFSs on Marine Corps Recruit Depot Parris Island (MCRDPI), South Carolina and monitor survival, home range size, and habitat use post-translocation, 2) estimate SFS density on Spring Island, SC and examine patterns of SFS and EGS occupancy, …
A Characterization Of West Virginia Coyotes (Canis Latrans) Utilizing Skull Morphology, Katharina E. Scholer
A Characterization Of West Virginia Coyotes (Canis Latrans) Utilizing Skull Morphology, Katharina E. Scholer
Theses, Dissertations and Capstones
Coyotes (Canis latrans) are now found throughout North and Central America, but before European colonization were restricted to west of the Mississippi. Migration occurred in two major paths to the East; north over the Great Lakes (through Canada) and south below the Great Lakes. The location of these routes is significant because those migrating north interbred with the wolves that reside there. These hybrid animals are larger and behaviorally different from their western counterparts. It is possible to differentiate these hybrids morphologically and genetically. Hybrids are known to be located in Maine, New York, and Pennsylvania, but the interest of …
Freshwater Mussels Of The Greenup Navigational Pool, Ohio River, With A Comparison To Fish Host Communities, Mitchell David Kriege
Freshwater Mussels Of The Greenup Navigational Pool, Ohio River, With A Comparison To Fish Host Communities, Mitchell David Kriege
Theses, Dissertations and Capstones
The Ohio River was historically a free-flowing system with diverse fish and freshwater mussel communities. Heavy industrialization, erosion from deforestation, and wide scale damming during the early-mid 20th century decimated riverine life. While mussel declines are well documented in the United States, in big river systems, freshwater mussel populations are poorly understudied. This thesis project mapped the mussel communities and site-specific sediments of the Greenup pool in the Ohio River for comparison to 2016 nighttime electrofishing data, provided by ORSANCO. Qualitative SCUBA surveys were performed at 18 randomly selected sites and two fixed sites between July and September. Each site …
Eastern Diamondback Rattlesnake (Crotalus Adamanteus) Telemetry Techniques And Translocation, Michael Thomas Jungen
Eastern Diamondback Rattlesnake (Crotalus Adamanteus) Telemetry Techniques And Translocation, Michael Thomas Jungen
Theses, Dissertations and Capstones
Internal implantation of radio-transmitters is the preferred attachment technique for snakes, but the high costs and invasive nature of the surgery make a functional alternative desirable. External radio-transmitters are cost-effective alternatives to surgical implantation. Rattlesnake rattles are unique morphological features that can serve as an attachment site for external radio-transmitters. Using thread and epoxy, I attached transmitters to the rattles of eastern diamondback rattlesnakes (Crotalus adamanteus; EDB). I calculated average monitoring duration using radio telemetry data collected from 49 adult EDBs telemetered from 2014 to 2017 in coastal South Carolina. On average, we monitored EDBs for 189 ±78 days with …
Amphibians Among Road-Rut Pools In West Virginia, Abby L. Sinclair
Amphibians Among Road-Rut Pools In West Virginia, Abby L. Sinclair
Theses, Dissertations and Capstones
As anthropogenic environmental stressors such as urbanization continue to increase, it is necessary to understand their impact on amphibian ecology. Due largely to their biphasic life history amphibians are negatively impacted by the destruction of lotic habitats i.e., wetlands for the creation of roads and urban centers. I examined the effects of three human-made road rut pools on the reproductive success and species richness of amphibians in southwest West Virginia from May to October 2012. I employed three detection techniques: drift fence pitfall trap arrays, funnel traps and dipnet sampling. Additionally, habitat covariates were taken (i.e., water depth) at each …
Influence Of Developmental Stage, Habitat, And Captivity On Thecutaneous Bacterial Communities Of Eastern Hellbenders (Cryptobranchus Alleganiensis Alleganiensis) In West Virginia, Rachel Fern Arrick
Influence Of Developmental Stage, Habitat, And Captivity On Thecutaneous Bacterial Communities Of Eastern Hellbenders (Cryptobranchus Alleganiensis Alleganiensis) In West Virginia, Rachel Fern Arrick
Theses, Dissertations and Capstones
Microbes inhabit virtually all surfaces of multicellular animal hosts, with microbial cells outnumbering the hosts’ own cells 10:1. Symbiont microbes, collectively referred to as the microbiome, can have profound impacts on the metabolism, development, behavior, and disease resistance of their multicellular hosts. Because the community structure of symbiont bacteria can influence host health, the characterization of amphibian microbiomes is becoming an increasingly important tool for future conservation in the face of global amphibian declines. Eastern hellbenders are good candidates for a microbiome study because they have seen substantial declines in recent decades and learning more about the environmental and physiological …
The Life History Of Faxonius Rusticus (Girard, 1852) In Sunfish Creek, Monroe County, Ohio, Kyle Mcgill
The Life History Of Faxonius Rusticus (Girard, 1852) In Sunfish Creek, Monroe County, Ohio, Kyle Mcgill
Theses, Dissertations and Capstones
Crayfish are among the most imperiled faunal groups globally. The continued spread of invasive species is a major impact to crayfish. Invasive species, much like the native species, are often understudied. As declines continue, invasive species spread, and new species are discovered; additional life history studies are as important as ever for crayfish conservation. Life history data was collected for rusty crayfish (Faxonius rusticus) from October 2017 to September 2018 in Sunfish Creek, Monroe County, Ohio. Faxonius rusticus are native to the Ohio River drainage around Cincinnati, Ohio but have extensively expanded their range over the past 30 years. Sunfish …
Targeted Limb Heating Augments The Actions Of Igf1 In The Growth Plate And Increases Bone Elongation In Growing Mice, Holly Lyn Racine
Targeted Limb Heating Augments The Actions Of Igf1 In The Growth Plate And Increases Bone Elongation In Growing Mice, Holly Lyn Racine
Theses, Dissertations and Capstones
Bone elongation disorders can lead to painful musculoskeletal disabilities in adulthood. Existing treatment options to correct left-right asymmetry in limb length include invasive surgeries and/or drug regimens. These are often only partially effective. Previous studies in weanling mice have shown that a daily application of mild heat (40°C) to limbs on one side of the body could be used to noninvasively enhance bone elongation. However, the impact of heat-treatment on bone at the cellular level remains elusive. The epiphyseal growth plate, the band of cartilage located at each end of long bones, is the main site of longitudinal growth and …
Analysis Of Bioaccumulation Of Selenium Diets In Brook Trout (Salvelnius Fontinalis), Kyle Aaron Tasker
Analysis Of Bioaccumulation Of Selenium Diets In Brook Trout (Salvelnius Fontinalis), Kyle Aaron Tasker
Theses, Dissertations and Capstones
The brook trout (Salvelinus fontinalis) is facing many challenges throughout the Appalachian region, which are thought to be brought on by effects of climate change and the loss of habitat because of the disturbance from the pursuit of energy sources, namely, the mining of coal in the region. Most of the mining occurs in the central plateau and southern mountain region of West Virginia. The brook trout have historically had an expansive range covering this region and has the potential to inhabit the headwater stream systems that occur very prevalently throughout the Appalachians. In the state of West Virginia, the …
The Effect Of Mast Availability On Ambush Site Selection In Eastern Diamondback Rattlesnakes (Crotalus Adamanteus), Berlynna May Heres
The Effect Of Mast Availability On Ambush Site Selection In Eastern Diamondback Rattlesnakes (Crotalus Adamanteus), Berlynna May Heres
Theses, Dissertations and Capstones
I examined ambush site selection in eastern diamondback rattlesnakes (Crotalus adamanteus). The eastern diamondback rattlesnake (EDB) is an imperiled, ambush predator endemic to southeastern pine savannas and woodlands of the United States. Eastern diamondbacks prey on small mammals that feed on hard and soft mast (e.g., nuts and fruits). In this study, I hypothesized that intra-seasonal shifts in masting vegetation would cause intra-season shifts in ambush site selection in EDBs as the result of a bottom-up trophic effect. I quantified EDB ambush site selection using radio telemetry data and vegetation analysis within a naturalized study site. When EDBs were encountered …
A Comparative Analysis Of The Metabolism And Energetics Of Darters (Percidae), Emma Kirsten Kist
A Comparative Analysis Of The Metabolism And Energetics Of Darters (Percidae), Emma Kirsten Kist
Theses, Dissertations and Capstones
Ecological niche theory suggests two species cannot live in the same ecological niche and differences should exist among species that appear to cohabitate. Variations in physiology and behavior that potentially enable species coexistence can be reflected in metabolism. This study investigated coexisting darter fishes by measuring the metabolism of greenside (Etheostoma blennioides) and variegate (E. variatum) darters over 48 h using intermittent-flow respirometry. Activity was analyzed using time-lapse videos. E. blennioides mean metabolic rate (154.64 ± SE 52.54 mg O2·kg-1 ·hr-1 ; n=14; p=0.0006) was significantly greater than and varied more than E. variatum’s mean rate (92.51 ± SE 32.70 …
Hibernacula Site Selection Of The Eastern Box Turtle, Terrapene C. Carolina, In A West Virginia Population, Benjamin Owen Koester
Hibernacula Site Selection Of The Eastern Box Turtle, Terrapene C. Carolina, In A West Virginia Population, Benjamin Owen Koester
Theses, Dissertations and Capstones
Eastern Box Turtles (Terrapene c. carolina) are a terrestrially hibernating reptile found throughout the eastern United States. Despite their prevalence, little, outside of anecdotal observations, is known about their hibernacula selection. This study examines if they preferentially select hibernacula locations, and if so, what characteristics they select in a West Virginia population. Over the course of two years, radio-tagged turtles (n=12) were followed into hibernation in Wayne County, WV. Upon entering hibernation, ~36 data point were collected in a grid-like fashion around the hibernacula, with an additional point collected at the hibernacula. At each point, seven variables were recorded: soil …
Analyzing Pterosaur Ontogeny And Sexual Dimorphism With Multivariate Allometry, Erick Charles Anderson
Analyzing Pterosaur Ontogeny And Sexual Dimorphism With Multivariate Allometry, Erick Charles Anderson
Theses, Dissertations and Capstones
The relationships of pterosaurs have been previously inferred from observed traits, depositional environments, and phylogenetic associations. A great deal of research has begun to analyze pterosaur ontogeny, mass estimates, wing dynamics, and sexual dimorphism in the last two decades. The latter has received the least attention because of the large data set required for statistical analyses. Analyzing pterosaurs using osteological measurements will reveal different aspects of size and shape variation in Pterosauria (in place of character states) and sexual dimorphism when present. Some of these variations, not easily recognized visually, will be observed using multivariate allometry methods including Principle Component …
Testing The Efficacy Of Anuran Callback Surveys, Matthew S. Grisnik
Testing The Efficacy Of Anuran Callback Surveys, Matthew S. Grisnik
Theses, Dissertations and Capstones
Monitoring programs often suffer from imperfect detection resulting in skewed population estimates, biased estimates of changes in occupancy over time, and can result in an underestimated proportion of area occupied (PAO) by a species. To increase the detection probability, researchers must increase sampling both spatially and temporally. Callback surveys are an active form of sampling that have been used to monitor many avian and mammal species. During callback surveys, the call of a conspecific male is projected with the intention of increasing probability of detection by eliciting a response from territorial males. These methods work for organisms that establish breeding …
A Coprological Survey Of Golden Mantled Howler Monkeys (Alouatta Palliata Palliata) In The Osa Peninsula, Costa Rica, Jess M. Conatser
A Coprological Survey Of Golden Mantled Howler Monkeys (Alouatta Palliata Palliata) In The Osa Peninsula, Costa Rica, Jess M. Conatser
Theses, Dissertations and Capstones
Interactions between free-ranging primates and their associated parasitic forms continue to be a point of interest in ecology for several reasons. External and internal parasitism is not atypical for wild populations of primates, and the repercussions of these relationships can range from benign to life-threatening and capable of altering the structure of naturally occurring groups. The ecological relationship between the golden mantled howler monkey (Alouatta palliata palliata) and its host-specific ectoparasite, the howler monkey bot fly (Alouattamyia baeri) poses significant potential detriment to the overall body quality and success of the host primate. A. p. palliata has also been recorded …