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Articles 1 - 30 of 10341
Full-Text Articles in Life Sciences
In Vivo Efficacy Of Pyrantel Pamoate As A Post-Exposure Prophylactic For Rat Lungworm (Angiostrongylus Cantonensis), John Jacob, Argon Steel, Lisa Kaluna, Steven Hess, Israel Leinbach, Carmen Antaky, Robert Sugihara, Lindsey Hamilton, Peter Follett, Kathleen Howe, Steven Jacquier, Supakit Wongwiwatthananukit, Susan Jarvi
In Vivo Efficacy Of Pyrantel Pamoate As A Post-Exposure Prophylactic For Rat Lungworm (Angiostrongylus Cantonensis), John Jacob, Argon Steel, Lisa Kaluna, Steven Hess, Israel Leinbach, Carmen Antaky, Robert Sugihara, Lindsey Hamilton, Peter Follett, Kathleen Howe, Steven Jacquier, Supakit Wongwiwatthananukit, Susan Jarvi
USDA Wildlife Services - Staff Publications
Rat lungworm (Angiostrongylus cantonensis) is a neurotropic nematode, and the leading cause of eosinophilic meningitis worldwide. The parasite is usually contracted through ingestion of infected gastropods, often hidden in raw or partially cooked produce. Pharmaceutical grade pyrantel pamoate was evaluated as a post-exposure prophylactic against A. cantonensis. Pyrantel pamoate is readily available over-the-counter in most pharmacies in the USA and possesses anthelmintic activity exclusive to the gastrointestinal tract (GIT). Administering pyrantel pamoate immediately after exposure should theoretically paralyze the larvae in the GIT, causing the larvae to be expelled via peristalsis without entering the systemic circulation. In this study, pyrantel ...
Review Of Orthochiroides Kovařík, 1998 With Description Of A New Species (Scorpiones: Buthidae), František Kovařík, Graeme Lowe
Review Of Orthochiroides Kovařík, 1998 With Description Of A New Species (Scorpiones: Buthidae), František Kovařík, Graeme Lowe
Euscorpius
The genus Orthochiroides Kovařík, 1998 is reanalyzed. Revised diagnoses and new illustrations for the genus and all four of its species are presented. A new species, O. somalilandus sp. n. from Somaliland is described and illustrated. Phylogenetic relationships of the genus with several other similar genera of small buthids are inferred from a parsimony analysis of 43 discrete morphological characters. The recent synonymy of Orthochiroides with Orthochirus is refuted and the genus is revalidated.
Reconstructing The Ecological Relationships Of Late Cretaceous Antarctic Dinosaurs And How Functional Tooth Morphology Influenced These Relationships, Ian D. Broxson
2022 Symposium
The Sandwich Bluff Formation of the James Ross Basin of Antarctica has recently yielded a group of five late Cretaceous dinosaurs that lived contemporaneously with each other, a first for Antarctica. These five dinosaurs include fragmentary remains of two differently sized elasmarian ornithopods, a possible megaraptor, a hadrosaur, and a nodosaur. In this study we will construct a model of the ecological relationships of late Cretaceous Antarctica. Additionally, we will look at what specific factors allowed this group of four herbivores and a carnivore to coexist in a restricted locality and what niches were filled by each species. Methods to ...
Using Community Science To Assess The Effect Of Wing Pattern And Weather On Butterfly Behavior, Abbigail Merrill
Using Community Science To Assess The Effect Of Wing Pattern And Weather On Butterfly Behavior, Abbigail Merrill
Animal Science Undergraduate Honors Theses
Signaling in insects is used as communication and for attraction of mates. The physical appearance of the insect as well as conditions such as weather can play a role in visual signaling, by influencing the wavelengths of light available, and subsequent signal detection. We do not know, however, whether signals butterflies present broadly correlate with how they behave. In this study, we looked at the wing patterns and behavior of butterflies in Northwest Arkansas over a 3.5-year period to assess the relationship between wing pattern, weather, and behavior. We used observational data collected by hundreds of University of Arkansas ...
Effects Of Cottonseed Meal Containing Gossypol On Testis Physiology In Boars, Kristin Ryan
Effects Of Cottonseed Meal Containing Gossypol On Testis Physiology In Boars, Kristin Ryan
Animal Science Undergraduate Honors Theses
Feral hogs are an invasive species found in 35 U.S. states without an effective control method to limit their population growth. According to a 2019 survey of 467 landowners in Arkansas, feral hogs caused an estimated $12 million in damages (Cook, 2019). While there are current control methods such as hunting and trapping, 65% of the feral hog population must be eliminated in a specific area to prohibit population growth (Cook, 2019). It is theorized that gossypol, a phenolic compound known to negatively impact reproductive function in other species, could cause sterility in boars. In this preliminary research study ...
The Influence Of Temperature And Body Size On Food Consumption In Prairie Lizards (Sceloporus Consobrinus), Morgan Pelley
The Influence Of Temperature And Body Size On Food Consumption In Prairie Lizards (Sceloporus Consobrinus), Morgan Pelley
Biological Sciences Undergraduate Honors Theses
Understanding the effect of temperature on physiological and digestive processes, such as voluntary consumption rate, is critical for assessing the impact of climate change. Food consumption is required for lizard survival and reproduction and its rate is dependent on temperature. For ectotherms, as temperatures increase, the amount of food consumed to meet the energy requirements related to survival and reproduction must also increase. Information on the amount of food voluntarily consumed may aid in determining if lizards can meet energy requirements. Such information could also aid in predicting survival of lizard populations, through construction of predictive climate change models. In ...
The Relationship Between People And The Tegu: A Review Of The Literature, Jordan Haley
The Relationship Between People And The Tegu: A Review Of The Literature, Jordan Haley
Honors College Theses
This thesis will explore the relationship humans have had with tegu lizards and how it has evolved over time, from their historical use as a source of leather and bushmeat in South America to their more recent rise in the pet trade and consequential establishment as an invasive species in the United States.
Relative Palatability And Efficacy Of Brodifacoum-25d Conservation Rodenticide Pellets For Mouse Eradication On Midway Atoll, Peter J. Kappes, Shane R. Siers, Israel L. Leinbach, Robert T. Sugihara, Wesley J. Jolley, Jonathan H. Plissner, Elizabeth N. Flint, Kelly L. Goodale, Gregg R. Howald
Relative Palatability And Efficacy Of Brodifacoum-25d Conservation Rodenticide Pellets For Mouse Eradication On Midway Atoll, Peter J. Kappes, Shane R. Siers, Israel L. Leinbach, Robert T. Sugihara, Wesley J. Jolley, Jonathan H. Plissner, Elizabeth N. Flint, Kelly L. Goodale, Gregg R. Howald
USDA Wildlife Services - Staff Publications
Invasive mice (Mus spp.) can negatively impact island species and ecosystems. Because fewer island rodent eradications have been attempted for mice compared to rats (Rattus spp.), less is known about efficacy and palatability of rodenticide baits for mouse eradications. We performed a series of bait acceptance and efficacy cage trials using a standard formulation of brodifacoum-based rodenticide on wild-caught mice from Sand Island, Midway Atoll, to help inform a proposed eradication there. Mice were offered ad libitum brodifacoum pellets along with various alternative food sources, and a “no choice” treatment group received only bait pellets. Mortality in the no choice ...
Carboplatin And Thalidomide Induced Neuro-Hepatotoxicity In Rats: Diminish Effect Of Citrullus Colocynthis, Mokhtar Ibrahim Yousef Ph.D., Sarah Samir Othman Ph.D., Moustafa Ahmed F.H. Mahdy Ph.D., Dina K.A.M. Khalil Ph.D., Maher Abd El-Naby Kamel Ph.D.
Carboplatin And Thalidomide Induced Neuro-Hepatotoxicity In Rats: Diminish Effect Of Citrullus Colocynthis, Mokhtar Ibrahim Yousef Ph.D., Sarah Samir Othman Ph.D., Moustafa Ahmed F.H. Mahdy Ph.D., Dina K.A.M. Khalil Ph.D., Maher Abd El-Naby Kamel Ph.D.
Delta University Scientific Journal
Carboplatin and thalidomide are good candidate’s treatments against many types of cancer. Latest studies demonstrated that these chemotherapeutic druges caused oxidative damage. So, the present study was conducted to estimate the neurotoxic and hepatotoxic effects induced by carboplatin/ thalidomide regimen and to explore the potential protective effect of Citrillus colocynthis extract (CCE). The obtained results showed that carboplatin/thalidomide induced histological changes, caused significant elevation in serum liver enzymes, decline in brain and plasma neurotransmitters, and increase in acetylcholine esterase. At the molecular level, thalidomide/carboplatin caused marked elevation in inflammatory and apoptotic markers and suppressed the expression of ...
Animal Care Observation Internship, Chandler Carr
Animal Care Observation Internship, Chandler Carr
Student Symposium
Zoos contain a wide variety of animals that each have idiosyncratic behavioral patterns, personalities and preferences. Unlike scientific literature, which tends to focus on the population, zoos take the wants and needs of individuals as priority. It would, thus, be beneficial for the zoo to have a detailed account of individual behavior throughout the day so the zoo knows how best to care for individuals. However, it is very likely that a few zookeepers watch over several animals at a time and have tasks to perform throughout the day. Watching and documenting specific behaviors at a specific time is a ...
Phenotype Characterization Of Sas-7(Or1945) C. Elegans, Chase Reinert
Phenotype Characterization Of Sas-7(Or1945) C. Elegans, Chase Reinert
Student Symposium
The ability to form a bipolar spindle is crucial for accurate cell division. In the nematode C. elegans several genes have been described with roles in spindle assembly including sas-7. The centriole is a key organizer of mitotic spindles. The sas-7 protein is a centriole component that regulates centriole duplication, elongation, and assembly. To date, most work on sas-7 was using a conditional non-null allele. In this study, phenotypes associated with the loss-of-function sas-7(or1945) null allele were characterized. Homozygous sas-7(or1945) hermaphrodites have reduced brood sizes with no viable embryos compared to wild-type and heterozygotes. When they do produce ...
Wildlife Rehabilitation Internship At Ohio Wildlife Center, Chase Reinert, Cassady Wolfinger
Wildlife Rehabilitation Internship At Ohio Wildlife Center, Chase Reinert, Cassady Wolfinger
Student Symposium
Ohio Wildlife Center treats approximately 8,000 sick, orphaned, or injured native Ohio wildlife every year. Throughout the spring semester, we completed a three-month internship to learn all aspects of wildlife rehabilitation. During our time at the Ohio Wildlife Center, we learned basic handling skills of a variety of species, including orphaned animals. Spring is the busiest time of year and most of our time was consumed with doing intake exams and tube feedings of infant animals. In addition to the wildlife hospital, the Ohio Wildlife Center has a pre-release facility located in Powell. Once a patient is deemed healthy ...
Familiarity And Its Impacts On Male Mate Preference The Sailfin Molly, Poecilia Latipinna, Abigail Doza, Alyssa Back
Familiarity And Its Impacts On Male Mate Preference The Sailfin Molly, Poecilia Latipinna, Abigail Doza, Alyssa Back
Student Symposium
Mating behaviors are an integral part of the life history and ecology of many species. Male mate preferences are an especially understudied area of research. We examined male mate preference for familiar and unfamiliar female fish in the sailfin molly Poecilia latipinna. We hypothesized that males would prefer familiar females as they may have been able to gather additional information concerning the female’s reproductive status. Males were isolated for a minimum of four days and then tested in a choice tank with two females of similar size. After the experiment, each male was randomly assigned to be with one ...
Understanding Continent-Wide Variation In Vulture Ranging Behavior To Assess Feasibility Of Vulture Safe Zones In Africa: Challenges And Possibilities, Adam Kane, Ara Monadjem, H. K.Ortwin Aschenborn, Keith Bildstein, André Botha, Claire Bracebridge, Evan R. Buechley, Ralph Buij, John P. Davies, Maria Diekmann, Colleen T. Downs, Nina Farwig, Toby Galligan, Gregory Kaltenecker, Chris Kelly, Ryno Kemp, Holger Kolberg, Monique L. Mackenzie, John Mendelsohn, Msafiri Mgumba, Ran Nathan, Aaron Nicholas, Darcy Ogada, Morgan Pfeiffer, W. Louis Phipps, Matteuns D. Pretorius, Sascha Rösner, Dana G. Schabo, Gabriel Lita Shatumbu, Orr Spiegel, Lindy J. Thompson, Jan A. Venter, Munir Virani, Kerri Wolter, Corinne J. Kendall
Understanding Continent-Wide Variation In Vulture Ranging Behavior To Assess Feasibility Of Vulture Safe Zones In Africa: Challenges And Possibilities, Adam Kane, Ara Monadjem, H. K.Ortwin Aschenborn, Keith Bildstein, André Botha, Claire Bracebridge, Evan R. Buechley, Ralph Buij, John P. Davies, Maria Diekmann, Colleen T. Downs, Nina Farwig, Toby Galligan, Gregory Kaltenecker, Chris Kelly, Ryno Kemp, Holger Kolberg, Monique L. Mackenzie, John Mendelsohn, Msafiri Mgumba, Ran Nathan, Aaron Nicholas, Darcy Ogada, Morgan Pfeiffer, W. Louis Phipps, Matteuns D. Pretorius, Sascha Rösner, Dana G. Schabo, Gabriel Lita Shatumbu, Orr Spiegel, Lindy J. Thompson, Jan A. Venter, Munir Virani, Kerri Wolter, Corinne J. Kendall
USDA Wildlife Services - Staff Publications
Protected areas are intended as tools in reducing threats to wildlife and preserving habitat for their long-term population persistence. Studies on ranging behavior provide insight into the utility of protected areas. Vultures are one of the fastest declining groups of birds globally and are popular subjects for telemetry studies, but continent-wide studies are lacking. To address how vultures use space and identify the areas and location of possible vulture safe zones, we assess home range size and their overlap with protected areas by species, age, breeding status, season, and region using a large continent-wide telemetry datasets that includes 163 individuals ...
Alleviating Human-Elephant Conflict Through Deterrent Fences And Environmental Monitoring In Southern Kenya, Sophia Carmen Corde
Alleviating Human-Elephant Conflict Through Deterrent Fences And Environmental Monitoring In Southern Kenya, Sophia Carmen Corde
Masters Theses & Specialist Projects
Human-wildlife conflict is present across the world. In areas where human settlements overlap with elephant habitats, human-elephant conflict can result from crop raiding events, compromising farmers’ food and economic security, and putting humans and elephants in danger through farmer retaliation. Elephants raid crops primarily at night, when detection by humans is lowest, and during the dry season, as crops are developing towards harvest and natural forage quality drops. People living in these areas facing HEC have developed mitigation strategies to lessen the impacts and move towards coexistence. As a team member on the Elephants and Sustainable Agriculture in Kenya project ...
Estimation Of Growth Curve Prediction Equation Parameters For Weights Of Shami Camel Before Mature/ Syria, تقدير معالم دالة تنبؤ منحنى النمو لأوزان الإبل الشامية قبل النضج في سورية, Shadi Faris, Khaled Alnajjar, Ali Dib, Abdulla Nouh
Estimation Of Growth Curve Prediction Equation Parameters For Weights Of Shami Camel Before Mature/ Syria, تقدير معالم دالة تنبؤ منحنى النمو لأوزان الإبل الشامية قبل النضج في سورية, Shadi Faris, Khaled Alnajjar, Ali Dib, Abdulla Nouh
Arab Journal of Arid Environments المجلة العربية للبيئات الجافة
The aim of this study was to estimate the growth curve prediction equation for weights from birth to four years old of Shami camel.
This study was carried out on 358 records of Shami camel, during the period from 1996 to 2012 at Dier Alhajr station for camel research, animal wealth research administration, General Commission Scientific Agriculture Research, rural Damascus (Syria).
The results showed high values of coefficient determinates (0.97-0.98), while standard errors values ranged between (27.26-34.13), and residual values ranged between (0.32-107.72), for each linear, quadratic and cubic equations. The values were fittest ...
High-Frequency Accelerometer Recording Of Key Predatory Behaviors In Vipers: Validation And Case Study With Timber Rattlesnakes (Crotalus Horridus), Morgan L. Thompson, Richard H. Adams, Anna Tipton, Dominic L. Desantis
High-Frequency Accelerometer Recording Of Key Predatory Behaviors In Vipers: Validation And Case Study With Timber Rattlesnakes (Crotalus Horridus), Morgan L. Thompson, Richard H. Adams, Anna Tipton, Dominic L. Desantis
Graduate Research Posters
High-frequency accelerometer recording of key predatory behaviors in vipers: validation and case study with Timber Rattlesnakes (Crotalus horridus)
Morgan Thompson, Richard H. Adams, Anna F. Tipton, and Dominic L. DeSantis
Tri-axial accelerometers (ACTs) are becoming increasingly common in studies of animal behavior wherein direct observation of subjects in nature is constrained or impossible. ACTs are small (< 1 g) piezo-electric (spring-like) sensors that measure three-dimensional acceleration (upward, downward, and side-to-side) derived from subject motion. When leveraged with advanced machine learning techniques, these data can enable precise automated classification of a wide range of movement-mediated behaviors. Until recently, ACTs were largely reserved for larger-bodied organisms or those most amenable to the temporary external attachment of devices. Ongoing ACT miniaturization has now expanded the breadth of organisms amenable to these methods. This project aims to expand on a recently developed framework for ACT monitoring in wild-ranging snakes, a group that has been mostly overlooked in biologging applications. We are currently conducting extensive captive validation trials for robust model training and testing to enable classification of predatory behaviors, including striking and ingestion of prey items, in Timber Rattlesnakes (Crotalus horridus). Following captive validation, we will translate this method to the field with a population of C. horridus in the lower Piedmont of middle Georgia to evaluate the efficacy of externally attached ACTs for remote and continuous monitoring of predatory behaviors by wild-ranging ...
Checklist Of Zooplankton Of The Halda River, Chattogram, Bangladesh, Md. Safiqul Islam, M.A. Azadi, Munira Nasiruddin, Md. Tajul Islam
Checklist Of Zooplankton Of The Halda River, Chattogram, Bangladesh, Md. Safiqul Islam, M.A. Azadi, Munira Nasiruddin, Md. Tajul Islam
Journal of Bioresource Management
The River Halda is one of the important natural breeding grounds of Indian major carp (Labeo rohita, Labeo calbasu, Gibelion catla, Cirrhinus mrigala) in Bangladesh for its unique physicochemical and biological properties of water. The productivity of the Halda ecosystem mainly depends on the plankton diversity. Zooplankton directly affects the productivity of the Halda River ecosystem. Research work was conducted for the two years extending from January 2017 to December 2018 to identify the zooplankton community of the Halda River. A total of 71 species of zooplankton under 37 genera belonging to 9 groups were identified. The dominant group of ...
A Revision Of The Genus Mesobuthus Vachon, 1950, With A Description Of 14 New Species (Scorpiones: Buthidae), František Kovařík, Victor Fet, Benjamin Gantenbein, Matthew R. Graham, Ersen A. Yağmur, František Šťáhlavský, Nikita M. Poverennyi, Nizami E. Novruzov
A Revision Of The Genus Mesobuthus Vachon, 1950, With A Description Of 14 New Species (Scorpiones: Buthidae), František Kovařík, Victor Fet, Benjamin Gantenbein, Matthew R. Graham, Ersen A. Yağmur, František Šťáhlavský, Nikita M. Poverennyi, Nizami E. Novruzov
Euscorpius
The Asian genus Mesobuthus Vachon, 1950, s. str. (Buthidae) (also known as an informal ‘M. eupeus complex’), which includes the most common scorpion species found from Turkey to China, is revised based on new collections, mainly from Central Asia, Turkey, and Iran, using both morphological and mitochondrial DNA data. Available type specimens of all species were studied; neotypes and lectotypes were designated when necessary. The type species Mesobuthus eupeus (C. L. Koch, 1839), s. str., is restricted to the Caucasus Mts. Currently, the genus includes 29 valid species. Fifteen previously described taxa are recognized as species: Mesobuthus afghanus (Pocock, 1889 ...
Mesobuthus Zarudnyi Sp. N. From Azerbaijan (Scorpiones: Buthidae), Nizami E. Novruzov, František Kovařík, Victor Fet
Mesobuthus Zarudnyi Sp. N. From Azerbaijan (Scorpiones: Buthidae), Nizami E. Novruzov, František Kovařík, Victor Fet
Euscorpius
A new species Mesobuthus zarudnyi sp. n. is described from Azerbaijan, fully illustrated with color photos. We compare the new species with two other species, M. eupeus (C. L. Koch, 1839) and M. persicus (Pocock, 1899), both found also in Azerbaijan.
Conservation Status Assessment Of The Egg-Mimic Darter (Percidae: Etheostoma Pseudovulatum) Using A Multi-Faceted Approach, Zachary L. Wolf, John W. Johansen, Rebecca E. Blanton
Conservation Status Assessment Of The Egg-Mimic Darter (Percidae: Etheostoma Pseudovulatum) Using A Multi-Faceted Approach, Zachary L. Wolf, John W. Johansen, Rebecca E. Blanton
Southeastern Fishes Council Proceedings
The imperiled Egg-mimic Darter (Etheostoma pseudovulatum) is a headwater-adapted fish restricted to an area less than 1000 km2 in Tennessee. It is found in only six tributaries of the Duck River and the large, mainstem of this system may act as a barrier to dispersal, restricting population connectivity. The only status assessment of this species was over two decades ago; genetic diversity and the degree of population connectivity have never been evaluated. We conducted a conservation status assessment using a multi-faceted approach to better inform conservation management plans, including examining its current distribution, assessing habitat quality, estimating abundance, population ...
First Record Of The Genus Compsobuthus (Scorpiones: Buthidae) From Maharashtra, India, With Description Of A New Species, Vivek Waghe, Satpal Gangalmale, Akshay Khandekar
First Record Of The Genus Compsobuthus (Scorpiones: Buthidae) From Maharashtra, India, With Description Of A New Species, Vivek Waghe, Satpal Gangalmale, Akshay Khandekar
Euscorpius
A new species of the genus Compsobuthus Vachon, 1949 (Buthidae) belonging to the werneri group is described from two localities in Jalgaon District, Maharashtra, India. The new species can be easily distinguished from all four members of the werneri group known from India and Pakistan by combination of nonoverlapping morphological characters. Compsobuthus satpuraensis sp. n. is the first species of this genus to be reported from the state of Maharashtra and fourth to be reported from India.
A Facial Congenital Anomaly In A Mature Male White-Tailed Deer (Odocoileus Virginianus), Travis Cunningham, Al Mead
A Facial Congenital Anomaly In A Mature Male White-Tailed Deer (Odocoileus Virginianus), Travis Cunningham, Al Mead
Georgia Journal of Science
Congenital anomalies are rarely documented in wild ungulates. This study describes a congenital facial malformation in a mature male white-tailed deer harvested in central Georgia in 2020. The skull displays a mediolateral deflection of the rostrum, and the mandibles display similar deflection with posterior rotation at the mandibular symphysis, a maxillofacial malformation commonly called wry face. Based on physical examination and radiographic imagery, there were no signs of neoplasia or healed bone trauma on the skull or jaws, suggesting a congenital origin for the deformity. Studies of domestic horses displaying wry face conclude that the malformation arises from fetal mispositioning ...
Use Of A Direct, Rapid Immunohistochemical Test For Diagnosis Of Rabies Virus In Bats, Charles E. Rupprecht, Lolita Van Pelt, April D. Davis, Richard B. Chipman, David L. Bergman
Use Of A Direct, Rapid Immunohistochemical Test For Diagnosis Of Rabies Virus In Bats, Charles E. Rupprecht, Lolita Van Pelt, April D. Davis, Richard B. Chipman, David L. Bergman
USDA Wildlife Services - Staff Publications
Rabies, a zoonotic encephalitis due to transmission of a lyssavirus, such as rabies virus (RABV), has the highest case fatality of any infectious disease. A global program for the elimination of human rabies caused by dogs is proposed for realization by 2030. Sensitive, specific, and inexpensive diagnostic tests are necessary for enhanced surveillance to detect infection, inform public health and veterinary professionals during risk assessments of exposure, and support overall programmatic goals. Multiple laboratory techniques are used to confirm a suspect case of rabies. One method for the detection of lyssavirus antigens within the brain is the direct rapid immunohistochemical ...
Ontogenetic Drivers Of Morphological Evolution In Monitor Lizards And Allies (Squamata: Paleoanguimorpha), A Clade With Extreme Body Size Disparity, Carlos J. Pavón-Vázquez, Damien Esquerré, J. Scott Keogh
Ontogenetic Drivers Of Morphological Evolution In Monitor Lizards And Allies (Squamata: Paleoanguimorpha), A Clade With Extreme Body Size Disparity, Carlos J. Pavón-Vázquez, Damien Esquerré, J. Scott Keogh
Publications and Research
Background
Heterochrony, change in the rate or timing of development, is thought to be one of the main drivers of morphological evolution, and allometry, trait scaling patterns imposed by size, is traditionally thought to represent an evolutionary constraint. However, recent studies suggest that the ontogenetic allometric trajectories describing how organisms change as they grow may be labile and adaptive. Here we investigated the role of postnatal ontogenetic development in the morphological diversification of Paleoanguimorpha, the monitor lizards and allies, a clade with extreme body size disparity. We obtained linear and geometric morphometric data for more than 1,600 specimens belonging ...
Size Estimates Of The Extinct Marine Snake Pterosphenus Schucherti From Eocene-Aged Sediments Of Central Georgia, Colin J. Calvert, Alfred J. Mead, Dennis Parmley
Size Estimates Of The Extinct Marine Snake Pterosphenus Schucherti From Eocene-Aged Sediments Of Central Georgia, Colin J. Calvert, Alfred J. Mead, Dennis Parmley
Georgia Journal of Science
Fossil snakes are most often identified from isolated vertebrae, complicating estimations of total body lengths of extinct taxa. Here we estimate the range of total body length of the late Eocene North American palaeophiid marine snake Pterosphenus schucherti based on 29 recently collected fossil vertebrae from Wilkinson County, Georgia, USA. Previous research suggests that the palaeophiids are most closely related to modern boids. Total body length estimates here are based on family-specific regressions of centrum length versus known total body length in extant members of Boidae, Pythonidae, and Colubridae. The high correlation coefficients for the family specific regressions supports previous ...
Preliminary Survey And Diet Analysis Of Anurans In The Riparian Zone Of Calayagon Watershed, Agusan Del Norte, Philippines, Jenessa Verna B. Salo, Chennie L. Solania
Preliminary Survey And Diet Analysis Of Anurans In The Riparian Zone Of Calayagon Watershed, Agusan Del Norte, Philippines, Jenessa Verna B. Salo, Chennie L. Solania
Journal of Bioresource Management
Watersheds are critical habitats for a diverse array of organisms. Among all the fauna, anurans are excellent biological indicators of environmental health. The community structure is often associated with a relationship between species diversity and diet. An anuran survey was conducted along riparian zones of three selected barangays of Calayagon Watershed (Guinabsan, Rizal, and Malpoc), Philippines. Extensive opportunistic methods for a total of 480 man-hours were spent traversing the area. A total of 195 individuals, consisting of seven species from four families, were recorded. Seventy-two percent of the individual species were regarded as Least concern, and 14 % were Near-threatened. Of ...
Temperature-Induced Multi-Species Cohort Effects In Sympatric Snakes, Richard B. King
Temperature-Induced Multi-Species Cohort Effects In Sympatric Snakes, Richard B. King
Faculty Peer-Reviewed Publications
In reptiles, reproductive maturity is often determined by size rather than age. Consequently, growth early in life may influence population dynamics through effects on generation time and survival to reproduction. Because reproductive phenology and pre- and post-natal growth are temperature dependent, environmental conditions may induce multi-species cohort effects on body size in sympatric reptiles. I present evidence of this using 10 years of neonatal size data for three sympatric viviparous snakes, Dekay's Brown snakes (Storeria dekayi), Red-bellied Snakes (S. occipitomaculata), and Common Garter snakes (Thamnophis sirtalis). End-of-season neonatal size varied in parallel across species such that snoutvent length ...
A Newly Recognized Theropod Assemblage From The Lewisville Formation (Woodbine Group; Cenomanian) And Its Implications For Understanding Late Cretaceous Appalachian Terrestrial Ecosystems, Christopher R. Noto, Domenic C. D'Amore, Stephanie K. Drumheller, Thomas L. Adams
A Newly Recognized Theropod Assemblage From The Lewisville Formation (Woodbine Group; Cenomanian) And Its Implications For Understanding Late Cretaceous Appalachian Terrestrial Ecosystems, Christopher R. Noto, Domenic C. D'Amore, Stephanie K. Drumheller, Thomas L. Adams
Articles & Book Chapters
While the terrestrial fossil record of the mid-Cretaceous interval (Aptian to Cenomanian) in North America has been poorly studied, the recent focus on fossil localities from the western United States has offered a more detailed picture of vertebrate diversity, ecosystem dynamics and faunal turnover that took place on the western landmass of Laramidia. This is in stark contrast to the terrestrial record from the eastern landmass of Appalachia, where vertebrate fossils are rare and consist mostly of isolated and fragmentary remains. However, a detailed understanding of these fossil communities during this interval is necessary for comparison of the faunal patterns ...
Annotated Checklist Of The Avian Species Observed At The Gordon Natural Area (West Chester University, Pa) 2003-2022. Version X, Nur Ritter, Josh R. Auld
Annotated Checklist Of The Avian Species Observed At The Gordon Natural Area (West Chester University, Pa) 2003-2022. Version X, Nur Ritter, Josh R. Auld
Gordon Natural Area Bird Survey Documents
Data from eBird (through 1/24/2022) and from the 2004 West Chester Bird Club Survey of the GNA
Summary Data Number of Surveys: 112 'Site Visits' by 44 Birders. Note: this does not count the birders who participated in the 2004 West Chester Bird Club Survey as participants were not identified by name on the data sheets.
Number of Taxa: 128 Species, in 88 Genera and 38 Families. Years Noted: Although the title suggests that observations began in 2003, data for three species that were seen in the Gordon during 1970 are included here. This inclusion is because one ...