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Articles 11221 - 11250 of 21498
Full-Text Articles in Entire DC Network
Recent History Of Mountain Lion (Puma Concolor) Observations In Arkansas, With Notes On The Individual Killed In Bradley County, Arkansas In 2014, R. Tumlison, M. Barbee
Recent History Of Mountain Lion (Puma Concolor) Observations In Arkansas, With Notes On The Individual Killed In Bradley County, Arkansas In 2014, R. Tumlison, M. Barbee
Journal of the Arkansas Academy of Science
No abstract provided.
Atypical Head Markings Of The Ouachita Map Turtle (Graptemys Ouachitensis) In The Upper Ouachita River Of Arkansas, R. Tumlison, A. Surf
Atypical Head Markings Of The Ouachita Map Turtle (Graptemys Ouachitensis) In The Upper Ouachita River Of Arkansas, R. Tumlison, A. Surf
Journal of the Arkansas Academy of Science
No abstract provided.
Javan Gibbon (Hylobates Moloch) Non-Vocal Social Communication And Gesture Use With Conspecifics, Melanie Bell
Javan Gibbon (Hylobates Moloch) Non-Vocal Social Communication And Gesture Use With Conspecifics, Melanie Bell
All Master's Theses
I explored gestures used by captive Javan gibbons (Hylobates moloch) at the Gibbon Conservation Center (Santa Clarita, CA). I hypothesized that a sender gibbon’s gesture modality would vary with the recipient gibbon’s attentional state and the sender would be equally likely to use all modalities (tactile, visual, actions, and facial expressions) when the recipient was attending (facing the sender), but would use more tactile gestures and actions when the recipient was non-attending (oriented away from the sender). I collected data from 10 individuals using all-occurrences sampling and an ethogram to score behaviors from video recordings. In 1,143 interactions, …
Female Social Connectivity Through The Leadership And Movement Progression Of Tibetan Macaques At Mt. Huangshan, China, Gregory P. Fratellone
Female Social Connectivity Through The Leadership And Movement Progression Of Tibetan Macaques At Mt. Huangshan, China, Gregory P. Fratellone
All Master's Theses
The present study investigates the leadership and progression of collective movements of Tibetan macaques (Macaca thibetana) found in Mt. Huangshan, China. I gathered information on their movements and social networks through all-occurrence, focal and scan sampling. I hypothesize that high-ranking females lead more collective movements than males as they have highly structured social bonds. I also predict that movements weighted by female presence are more efficient as societies are matrilineally structured and females are more socially connected. There were a total of 128 successful collective movements recorded over a 2-month period. There was no significant effect of sex, …
A Comparison Of Chimpanzee (Pan Troglodytes) Responses To Caregiver Use Of Positive Reinforcement Training (Prt) And Species-Specific Behaviors (Ssb), Whitney D. Emge
A Comparison Of Chimpanzee (Pan Troglodytes) Responses To Caregiver Use Of Positive Reinforcement Training (Prt) And Species-Specific Behaviors (Ssb), Whitney D. Emge
All Master's Theses
The present study compared the effects of positive reinforcement training (PRT) and unstructured interactions (UI) on chimpanzee (Pan troglodytes) behavior. In the PRT condition, a caregiver interacted with a chimpanzee to condition behaviors for 10 min. In the UI condition, a caregiver interacted without PRT for 10 min. Participants were five chimpanzees in a sanctuary setting. Chimpanzees were also videotaped for 10 min after trials (PTP) and for 10 min in a matched control (MC) period on a different day. From these videotapes experimenters coded chimpanzee behaviors and calculated durations in behavioral contexts. Chimpanzees spent a significantly higher …
Behavioral Response Of Pacific Lamprey (Entosphenus Tridentatus) To Predator Odors, Laurie L. Porter
Behavioral Response Of Pacific Lamprey (Entosphenus Tridentatus) To Predator Odors, Laurie L. Porter
All Master's Theses
Pacific lamprey (Entosphenus tridentatus), a species facing serious threats to their existence, experience a number of challenges in reaching their desired spawning grounds during the adult migratory phase, and predators are suspected to be one of these challenges. Understanding if Pacific lamprey respond to predator odorants may provide a management tool for use in conjunction with attractants in guiding lamprey to suitable spawning habitat and deterring them from poor habitat. Previous research has failed to explore Pacific lamprey response to predator odorants, although much research exists on attractant odorants. In our study, we tested Pacific lamprey response to …
Passage Route Survival And Behavior Of Juvenile Salmon At Priest Rapids Dam, Columbia River, Wa, Kyle B. Hatch
Passage Route Survival And Behavior Of Juvenile Salmon At Priest Rapids Dam, Columbia River, Wa, Kyle B. Hatch
All Master's Theses
Columbia River hydropower is an economic mainstay of the Pacific Northwest. However, it is well known that the construction of hydropower dams has added anthropogenic pressure to Columbia River salmon populations. Juvenile salmon that pass through powerhouse turbines at large hydropower dams display higher mortality rates than salmon passing through alternative routes; thus at Priest Rapids Dam, a top-spill fish bypass was constructed as a safer alternate downstream passage. To investigate the efficacy of this new passage structure, an acoustic telemetry study was conducted in the spring of 2014 to determine the ability of the bypass to collect and safely …
Provisioning And Its Effects On The Social Interactions Of Tibetan Macaques (Macaca Thibetana) At Mt. Huangshan, China, Brianna I. Schnepel
Provisioning And Its Effects On The Social Interactions Of Tibetan Macaques (Macaca Thibetana) At Mt. Huangshan, China, Brianna I. Schnepel
All Master's Theses
The dispersal patterns of food resources has a significant effect on the composition of primate groups and social interactions within those groups. Humans often alter the dispersal of food. Non-humans often use affiliative behaviors to elicit tolerance or support from other group members. I investigated whether provisioned food resources alter the social interactions and group dynamics of Macaca thibetana. All-occurrence sampling and scan sampling were used for data recorded by camera traps. Trail-cameras were placed at six locations that contain natural and human food resources and recorded 60-second videos. Social behavior and proximity of the monkeys were recorded. I …
Density Dependent Effects On Cutthroat And Brook Trout Behavioral Competition And Energy Expenditure, Ethan Daniel Green
Density Dependent Effects On Cutthroat And Brook Trout Behavioral Competition And Energy Expenditure, Ethan Daniel Green
All Master's Theses
Cutthroat Trout (Oncorhynchus clarki) are being displaced rangewide by invasive Brook Trout (Salvelinusfontinalis). There are many potential causes of displacement but the underlying mechanisms of the invasion and displacement are not well understood. Increased population densities in streams in which Cutthroat Trout and Brook Trout occur in sympatry appears to have detrimental effects on Cutthroat Trout. In this study, I compared the competitive behaviors and activity allocation patterns of Brook Trout and Cutthroat Trout at varying population densities in a simulated stream aquarium. I concluded that Brook Trout likely have a behavioral advantage over Cutthroat Trout …
Shorebird Foraging Habitat In Southeast Arkansas, J. E. Aycock, C. G. Sims
Shorebird Foraging Habitat In Southeast Arkansas, J. E. Aycock, C. G. Sims
Journal of the Arkansas Academy of Science
Approximately 500,000 shorebirds travel through the Mississippi Alluvial Valley (MAV) each spring and fall. During migration, the average 45g shorebird needs to eat approximately 8g of invertebrates per day. While shorebird stopover habitat guidelines for the MAV are based on an expert estimate of 2g of invertebrates/m2, this estimate has not been quantified in Arkansas. Invertebrate biomass available for shorebird foraging was examined on five properties in southeastern Arkansas during spring and fall migration (fall 2010, spring and fall 2011, and spring 2012). Macroinvertebrate biomass was less than the estimated 2 g/m2 in three of the four sampled seasons. Further …
Effects Of Partner Familiarity On Conversational Style In Signed-Interactions With Chimpanzees, Susan Ann Keenan
Effects Of Partner Familiarity On Conversational Style In Signed-Interactions With Chimpanzees, Susan Ann Keenan
All Master's Theses
Chimpanzees that use signs of American Sign Language (ASL) sign to friends and strangers, both human and nonhuman. Transcripts of signed conversations between four chimpanzees and 43 human interlocutors within a 4 min trial were analyzed for their style including lexical diversity. Twenty-two of the interlocutors were familiar to the chimpanzees, 21 were strangers, and all had basic or more know ledge of ASL. Overall, familiar signers used more vocabulary and had more conversations than unfamiliar signers. The two groups had 53 vocabulary signs in common. Only one chimpanzee, Loulis, participated in enough trials and in both conditions to elicit …
River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2015, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Lucy Sonnenberg, Gerry Pinto, Nisse Goldberg, Anthony Ouellette, Gretchen Bielmyer-Fraser, Stuart J. Chalk, Peter Bacopoulos, Brian P. Zoellner
River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2015, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Lucy Sonnenberg, Gerry Pinto, Nisse Goldberg, Anthony Ouellette, Gretchen Bielmyer-Fraser, Stuart J. Chalk, Peter Bacopoulos, Brian P. Zoellner
State of the River Report
No abstract provided.
Assessing The Contributions Of Two Stocked Strains On A Minnesota-Wisconsin Border Water, Douglas Zentner
Assessing The Contributions Of Two Stocked Strains On A Minnesota-Wisconsin Border Water, Douglas Zentner
Journal of Earth and Life Science
Stocking has long been used as a management tool in the United States even though many of its effects remain cryptic. Past comparisons between stocked strains were generally based on the survival and growth rates of physically marked individuals. More recently the use of genetic markers to assess contributions of stocked individuals has been employed by fisheries managers. Using 13 microsatellite markers we assessed the contributions of two muskellunge (Esox masquinongy) strains (Wisconsin and Leech) stocked into the St. Louis River Estuary. Ancestry in the adult samples remained relatively constant with differences only observed between the 2008 and …
Using Wild I.D. As A Reliable Source For Mark And Recapture Studies On Northern Pike (Esox Lucius), Martin Evans
Using Wild I.D. As A Reliable Source For Mark And Recapture Studies On Northern Pike (Esox Lucius), Martin Evans
Journal of Earth and Life Science
Mark and recapture studies are a very popular method fisheries biologists use to assess certain fish populations in lakes. This process can be very labor intensive and expensive. Wild I.D. is free software developed by Dartmouth College that uses SIFT program to find unique features in photographs. Initially developed for identification of African land mammals the program gives each photo a score and percent match to other photos. Northern pike were used in this study to determine if the program can recognize simulated recapture events. Photos of sample fish were taken at two separate locations, the photos were then copied …
Juvenile Chinook Salmon Diet In Comparison To Invertebrate Drift In The Merced River, California, Tyler Orgon
Juvenile Chinook Salmon Diet In Comparison To Invertebrate Drift In The Merced River, California, Tyler Orgon
Journal of Earth and Life Science
Diets and habitat types of salmonids have been widely studied in disturbed streams and rivers. The Merced River in California has a long history of flooding, damming, levee failures, and channel reconstruction events that has disrupted the aquatic ecosystem. This 30 day study was conducted in the Robinson Reach of the Merced River using juvenile Chinook salmon (Oncorhynchus tshawtscha). The objectives were to try and understand if juvenile Chinook salmon were selecting certain invertebrate species, determine if there were any differences in diets between habitat types, and determine whether diets and drift samples were different. Diets consisted of …
Effects Of Cooler Northern Waters On Growth Rates In Bluegill And Pumpkinseed Sunfish, Alec Spurbeck
Effects Of Cooler Northern Waters On Growth Rates In Bluegill And Pumpkinseed Sunfish, Alec Spurbeck
Journal of Earth and Life Science
The Centrarchidae family range spans all across the United States making them a favorite target for many recreational anglers. In northern Minnesota, most water bodies do not reach optimal growth temperatures for the sunfishes, putting them right on the edge of their suitable range and potentially slowing overall growth. Therefore, the main objectives of this study were to 1) determine if sunfish growth rates respond to the severity of winter and 2) investigate growth differences between two sunfish species. Growth rates of bluegill (Lepomis macrochirus) and pumpkinseed (Lepomis gibbosus) were estimated from Big Sugar Bush Lake, …
Spatial And Temporal Factors Influencing Northern Pike Fry Density Estimates, Nate Stott
Spatial And Temporal Factors Influencing Northern Pike Fry Density Estimates, Nate Stott
Journal of Earth and Life Science
The Tamarac River in northern Minnesota is an important spawning site for northern pike (Esox lucius) in the Red Lake system. However, little is known about fry production in the river. This study investigates migration densities and spatial and temporal factors influencing northern pike fry density estimates. Northern pike fry were collected with drift nets between 28 May and 4 June 2014. Thirty northern pike fry were randomly selected to have total length measured from each sample. Northern pike fry were observed in the first sample day. Northern pike fry density maxima occurred on 29 May at midnight …
A Genetic Based Approach To Management And Stocking Of Muskellunge, Douglas Zentner
A Genetic Based Approach To Management And Stocking Of Muskellunge, Douglas Zentner
Journal of Earth and Life Science
Fish stocking has long been used as a management tool among fisheries biologists and continues to be met with popular public opinion. Despite perceived simplicity, the full effects of stocking remain cryptic for many fish populations. Stocking has frequently been used to maintain or establish successful muskellunge (Esox masquinongy) populations. Coupled with other management practices the Minnesota Department of Natural Resources (MNDNR) has established Minnesota as a premier muskellunge fishery. From 1958 to 2012 the MNDNR stocked three strains of muskellunge in Big Mantrap Lake, MN. The first from Shoepack Lake, MN (hereafter Shoepack-strain) was used until the …
Saffron Cod (Eleginus Gracilis) In North Pacific Archaeology, Megan A. Partlow, Eric Munk
Saffron Cod (Eleginus Gracilis) In North Pacific Archaeology, Megan A. Partlow, Eric Munk
All Faculty Scholarship for the College of the Sciences
Saffron cod (Eleginus gracilis) is a marine species often found in shallow, brackish water in the Bering Sea, although it can occur as far southeast as Sitka, Alaska. Recently, we identified saffron cod remains in two ca. 500-year-old Afognak Island midden assemblages from the Kodiak Archipelago. We developed regression formulae to relate bone measurements to total length using thirty-five modern saffron cod specimens. The archaeological saffron cod remains appear to be from mature adults, measuring 22–45 cm in total length, and likely caught from shore during spawning. Saffron cod may have been an important winter resource for Alutiiq people living …
Energetic Costs Of Aggression In The Northern Cardinal, Sarah K. Wright
Energetic Costs Of Aggression In The Northern Cardinal, Sarah K. Wright
Honors Program Theses
Territorial aggression during the nonbreeding season has not been sufficiently studied, especially in a natural system. There has been some evidence to suggest that the steroid hormone precursor, dehydroepiandrosterone (DHEA) may regulate male aggression during the nonbreeding season, rather than testosterone. This study aimed to investigate the effects of energy status (through food supplementation) on nonbreeding aggression in the Northern Cardinal and add to the pre-existing evidence of a DHEA-mediated mechanism of aggression. It was hypothesized that if aggression was maintained for an extended period of time, metabolite levels would favor energy usage (more glycerol and less triglycerides) compared to …
A Study Evaluating Genetic Trends And Molecular Predisposition To Improved Carcass Quality Of Brahman And Brahman Influenced Cattle, Amanda M. Royer
A Study Evaluating Genetic Trends And Molecular Predisposition To Improved Carcass Quality Of Brahman And Brahman Influenced Cattle, Amanda M. Royer
LSU Master's Theses
The first objective of the current study was to evaluate genetic trends from 10 years of the American Brahman Breeders Association Carcass Evaluation Program from 2004 to 2013. Changes of performance in growth, carcass composition, and carcass quality traits were evaluated. Overall means were calculated to report the total average for each trait along with an average rate of change per year. Growth traits evaluated included feedlot entrance weight (INWT), harvest weight (HRVWT), and average daily gain (ADG). Carcass composition and quality traits evaluated included hot carcass weight (HCW), rib eye area (REA), marbling score (MARB), dressing percent (DP), quality …
Relating Personality And Body Size To Social Networks And Dispersal Behavior In Female Western Mosquitofish (Gambusia Affinis), Janean Kazimir
Relating Personality And Body Size To Social Networks And Dispersal Behavior In Female Western Mosquitofish (Gambusia Affinis), Janean Kazimir
Williams Honors College, Honors Research Projects
No abstract provided.
Effect Of Lysozyme Or Antibiotics On Faecal Zoonotic Pathogens In Nursery Pigs, J E. Wells, E. D. Berry, N Kalchayanand, L A. Rampel, M Kim, W. T. Oliver
Effect Of Lysozyme Or Antibiotics On Faecal Zoonotic Pathogens In Nursery Pigs, J E. Wells, E. D. Berry, N Kalchayanand, L A. Rampel, M Kim, W. T. Oliver
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Aims: The objective of this study was to determine the effect of lysozyme and antibiotics on zoonotic pathogen shedding in faeces from nursery pigs housed without and with an indirect disease challenge. Methods and Results: Two replicates of approximately 650 pigs each were weaned and randomly assigned to one of 24 pens in either a nursery room that had been fully disinfected or a nursery room left unclean. Pigs were randomly assigned to control diet (Control), control diet + antibiotics (Antibiotic; chlortetracycline and tiamulin), or control diet + lysozyme (Lysozyme; 100 mg kg ^-1 diet). Rectal swab samples were collected …
Data For Sandler Et Al. 2015, Amanda Sandler, Libby Megna, James Hayward, Shandelle Henson, Cynthia Tkachuck, Richard Tkachuck
Data For Sandler Et Al. 2015, Amanda Sandler, Libby Megna, James Hayward, Shandelle Henson, Cynthia Tkachuck, Richard Tkachuck
Faculty Publications
These data are archived for the paper "Every-other-day clutch-initiation synchrony in ring-billed gulls (Larus delawarensis)" by Sandler et al., submitted
Effects Of Supplemental Food On The Behavior, Aggression, And Paternity Status Of Male Indigo Buntings (Passerina Cyanea), Bradley Mcleod
Effects Of Supplemental Food On The Behavior, Aggression, And Paternity Status Of Male Indigo Buntings (Passerina Cyanea), Bradley Mcleod
Online Theses and Dissertations
Breeding is an energetically costly activity for birds. If energy-limited, birds may alter their time budgets, reducing time spent in some activities and spending more time in others. To date, no experimental study has investigated the possible effect of food availability on male mate guarding behavior. Additionally, previous results from food supplementation studies are mixed. My objectives were to determine how food supplementation might influence the breeding behavior of male Indigo Buntings (Passerina cyanea). I predicted that, compared to non-supplemented males, food-supplemented males would: 1) spend less time foraging, 2) spend more time singing, 3) spend more time mate guarding, …
Flight Vocalizations And Displays Of Adult Chimney Swifts (Chaetura Pelagica): Description And Function, Louise Ann Peppe
Flight Vocalizations And Displays Of Adult Chimney Swifts (Chaetura Pelagica): Description And Function, Louise Ann Peppe
Online Theses and Dissertations
The vocalizations of many songbirds have been well documented and analyzed, but less is known about the vocal behavior of many non-passerines, including swifts. While flying alone as well as during aerial displays with conspecifics, Chimney Swifts (Chaetura pelagica) often utter a twitter call consisting of a series of high-frequency chip notes. However, little is known about the possible function(s) of swift flight displays and their twitter call. My objectives were to record, analyze, and document the aerial behaviors and associated vocalizations of adult Chimney Swifts. I studied swifts at the Blue Grass Army Depot in Madison County, Kentucky, where …
Fate Of Captive-Reared Bobwhite Quail Released In Central Kentucky, Adam Carter
Fate Of Captive-Reared Bobwhite Quail Released In Central Kentucky, Adam Carter
Online Theses and Dissertations
The fate of pen-raised bobwhite quail (Colinus virginianus) released onto two farms (Site 1 and 2) and a reclaimed coal surface mine (Site 3) in south-central Kentucky during the summers of 2008 and 2009 was assessed. Of the 57 bobwhite quail radio-tagged and released in this study, the fate of 26 (45%) was unknown because the telemetry signal was lost and the birds could not be located. Within 34 days after release, mortality of the remaining 31 radio-tagged birds was 100%. Raptors, coyotes, and mesomammal predators were responsible for most (84%) of the identified quail mortality; accounting for the deaths …
Vocal Responses Of Blue Jays (Cyanocitta Cristata) To Raptors That Differ In Predatory Threat, Julie Dahl
Vocal Responses Of Blue Jays (Cyanocitta Cristata) To Raptors That Differ In Predatory Threat, Julie Dahl
Online Theses and Dissertations
Anti-predator defense is an important adaptation in group-living organisms. Some species of flocking birds use referential calls to communicate predator presence and the level of threat posed by predators. Previous studies have revealed that two species in the corvid family, American Crows (Corvus brachyrhynchos) and Siberian Jays (Perisoreus infaustus), use referential calls to convey information about predator presence and level of threat. Because of their intelligence and flocking behavior, Blue Jays, like American Crows and Siberian Jays, may use referential calls to communicate raptor presence and threat. During the non-breeding seasons of 2014 and 2015, I recorded and subsequently analyzed …
Offspring Retrieval Behaviors After Brood Loss In The Convict Cichlid, Heather Witherspoon Govert
Offspring Retrieval Behaviors After Brood Loss In The Convict Cichlid, Heather Witherspoon Govert
Online Theses and Dissertations
Parents provide care for their young in several different ways. One of these is searching for and retrieving any young that may become displaced from their nest. In monogamous biparental species, parents may share care of their young, including retrieval efforts. Convict cichlids (Amatitlania siquia) are an example of a monogamous biparental fish that show shared parental care of young. In the wild, these cichlids defend nests and search for missing young in response to complete or catastrophic brood loss. This retrieval behavior is important for both parents because parents, especially the males, have been observed to abandon their mate …
Effect Of Variation In Nestling Hunger Levels On The Begging Behavior Of Nestlings And The Provisioning Behavior Of Adult American Kestrels, Katheryn Ann Watson
Effect Of Variation In Nestling Hunger Levels On The Begging Behavior Of Nestlings And The Provisioning Behavior Of Adult American Kestrels, Katheryn Ann Watson
Online Theses and Dissertations
Little is known about how variation in nestling begging intensity influences the behavior of adult raptors and how responses of adult males and females to such variation might differ. My objective was to manipulate the begging intensity of nestling American Kestrels (Falco sparverius) and examine the responses of adult males and females. I studied 12 pairs of kestrels nesting in nest boxes from 1 March to 1 July 2014 at the Blue Grass Army Depot, Madison County, Kentucky. Nest boxes were modified with a separate compartment for a camcorder to record nestling behavior, and a second camcorder was placed outside …