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Articles 61 - 90 of 890
Full-Text Articles in Behavior and Ethology
Loggerhead Shrike Detectability And Occurrence In Coastal South Carolina Urban Areas, Michelle Krauser
Loggerhead Shrike Detectability And Occurrence In Coastal South Carolina Urban Areas, Michelle Krauser
Electronic Theses and Dissertations
Grassland birds, such as the loggerhead shrike (Lanius ludovicianus), are threatened by extensive land-use change, including urbanization. Loggerhead shrikes have been declining since the early 1900s and are rare or extirpated in portions of their former range. Obtaining reliable population estimates of loggerhead shrikes is important to identify demographic trends and ensure conservation decisions are based on an accurate assessment of their current status. Imperfect detection, or the inability to detect every shrike during a survey, can result in biased population estimates. Estimating detection probability is labor-intensive and requires assumptions that are difficult to satisfy in most field studies. Understanding …
Movement Patterns Of The Shovelnose Guitarfish (Pseudobatos Productus) And California Bat Ray (Myliobatis Californica) In The Southern California Bight, Annabel Gong
Theses
While the movement patterns of large elasmobranch species have been studied extensively, those of smaller, mesopredatory species remain understudied. The shovelnose guitarfish (Pseudobatos productus) and the California bat ray (Myliobatis californica) are among the least studied elasmobranchs in the Southern California Bight. This study quantified the broad- and fine-scale movement patterns of these species using passive acoustic telemetry. Twelve guitarfish were surgically implanted with coded acoustic transmitters at a known aggregation site off La Jolla (San Diego County), California, USA and tracked for 849.5 days each, on average. Six bat rays were also implanted here and tracked for …
Behavioral Choices Of Apple Snails, Pomacea Maculata, Under Varied Chemical Landscapes, Andrea Adams
Behavioral Choices Of Apple Snails, Pomacea Maculata, Under Varied Chemical Landscapes, Andrea Adams
Theses
Habitat choice is a critical behavior for organisms to successfully survive and reproduce. These choices are dictated by available environmental information about potential predation risks or food patches that form the organism’s sensory landscape. This study specifically focused on the behavioral choices of two invasive apple snail (Pomacea maculata) populations exposed to varying predation threats. We collected snails from Florida and Alabama which were used in laboratory experiments with varied sensory landscapes. Trials consisted of controls with no cues (FL: n = 7, AL: n= 7), an attractive treatment with introduced food cues (FL: n = 4, AL: …
Environmental And Habitat Preferences Of The Algerian Hedgehog Atelerix Algirus(Lereboullet, 1842) In El Kala National Park (North-East Algeria), Sakraoui Rym, Boukheroufa Mehdi, Dadci Walid, Abdallah Khadidjawissal, Senaoui Charafeddine, Sakraoui Feriel, Benyacoub Slim
Environmental And Habitat Preferences Of The Algerian Hedgehog Atelerix Algirus(Lereboullet, 1842) In El Kala National Park (North-East Algeria), Sakraoui Rym, Boukheroufa Mehdi, Dadci Walid, Abdallah Khadidjawissal, Senaoui Charafeddine, Sakraoui Feriel, Benyacoub Slim
Journal of Bioresource Management
We conducted this study to identify the preferred habitat of Atelerix algirus in the National Park of El Kala (PNEK), through the analysis of the catches rates of the species combined to an ethno zoological survey carried out among the residents. The study was conducted between January 2010 and December 2011, in five localities of the Park, different by their useful areas (forests and agricultural land) and their degree of urbanization: Raml Souk, El Aioun, Berrihane, El Kala and Bougous. We also surveyed 57 residents of Berrihane locality. Our results identified the locality of Berrihane as the preferred area of …
Addition Of Inexpensive Lights To Aquatic Turtle Traps Improves Trapping Efficiency In Early Spring, Jenna B. Myers, Michael J. Bender, Maggie M. Woodall*, Jennifer L. Mook
Addition Of Inexpensive Lights To Aquatic Turtle Traps Improves Trapping Efficiency In Early Spring, Jenna B. Myers, Michael J. Bender, Maggie M. Woodall*, Jennifer L. Mook
Georgia Journal of Science
Aquatic turtles are essential contributors to many freshwater ecosystems, but they face a myriad of threats, necessitating periodic monitoring of population status. Increasing turtle trapping efficiency has the potential to improve conservation efforts, particularly when population sizes are low or sampling conditions are suboptimal. In an effort to improve trapping efficiency, we added LED lights to turtle traps in an attempt to attract kinosternid turtles. Our investigation into the effectiveness of LED lights as an attractant was based on evidence suggesting that these turtles may forage using both visual and olfactory cues. Lights significantly increased captures of kinosternid turtles during …
Drivers Of Annual Fledging In The Mississippi Sandhill Crane Population 1991-2018, Henry W. Woolley, Scott G. Hereford, Jerome J. Howard,
Drivers Of Annual Fledging In The Mississippi Sandhill Crane Population 1991-2018, Henry W. Woolley, Scott G. Hereford, Jerome J. Howard,
Proceedings of the North American Crane Workshop
We studied trends in nesting, number of chicks fledged annually, and their environmental and biotic drivers in the wild population of Mississippi sandhill cranes (Grus canadensis pulla) on Mississippi Sandhill Crane National Wildlife Refuge during 1991-2018. Population size, number of nests, and number of chicks fledged annually increased slowly but significantly over the course of the study. Increases in population size were related to both number of wild-reared chicks fledged annually and number of captive-reared chicks released each year, but wild-reared chicks had significantly higher survivorship than captive-reared chicks. Hurricanes transiently raised mortality rates but only Hurricane Katrina …
Black Fly Survey Of A Whooping Crane Reintroduction Area In Eastern Wisconsin, Richard P. Urbanek, Peter H. Adler
Black Fly Survey Of A Whooping Crane Reintroduction Area In Eastern Wisconsin, Richard P. Urbanek, Peter H. Adler
Proceedings of the North American Crane Workshop
Nest desertion due to harassment by black flies (Simulium annulus and S. johannseni) during incubation has been a major factor inhibiting success of the reintroduced Eastern Migratory Population of whooping cranes (Grus americana). To avoid this problem, which was prevalent in the core reintroduction area in central Wisconsin, the Whooping Crane Eastern Partnership changed the primary reintroduction area to eastern Wisconsin in 2011. However, a 2010 assessment of black flies in that area had concentrated predominantly on the southern portion of the new area. In 2017-2018, we collected the first samples of black flies in Green …
Twenty-Year Status Of The Eastern Migratory Whooping Crane Reintroduction, Hillary L. Thompson, Nicole M. Gordon, Darby P. Bolt, Jadine R. Lee, Eva K. Szyszkoski
Twenty-Year Status Of The Eastern Migratory Whooping Crane Reintroduction, Hillary L. Thompson, Nicole M. Gordon, Darby P. Bolt, Jadine R. Lee, Eva K. Szyszkoski
Proceedings of the North American Crane Workshop
Since the 10-year status update in 2011, the first parent-reared whooping cranes (Grus americana) were released in the Eastern Migratory Population, the ultralight program (UL) ended, and cranes were released at new sites in eastern Wisconsin. During 2011-2020, 117 captive-reared whooping cranes were released; 75 costume-reared (35 in UL and 40 in the Direct Autumn Release program) and 42 parent-reared. There were no significant differences in 1- or 3-year survival rates based on rearing technique or release site. The population size remained at about 100 cranes during 2010-2018 but then decreased during 2018-2020 due to a reduced number …
Observations Of Whooping Crane Parental Provisioning Of Chicks, Glenn H. Olsen
Observations Of Whooping Crane Parental Provisioning Of Chicks, Glenn H. Olsen
Proceedings of the North American Crane Workshop
Crane chicks are dependent on parent birds for provisioning during the first few months of life, but no study has examined this provisioning in detail. In 2014 research staff at the U.S. Geological Survey, Eastern Ecological Science Center (formerly Patuxent Wildlife Research Center), in Laurel, Maryland, made multiple observations of parent whooping cranes (Grus americana) feeding or interacting with their chick during the 3 months from hatching to fledging. Both parents participated in the feeding of the chick and only 1 chick was raised by each pair of parent whooping cranes. Initially feeding frequency was low (0-20 times …
Vigilance Of Nesting Whooping Cranes In Juneau County, Wisconsin, Nicole M. Gordon, Darby P. Bolt, Hillary L. Thompson
Vigilance Of Nesting Whooping Cranes In Juneau County, Wisconsin, Nicole M. Gordon, Darby P. Bolt, Hillary L. Thompson
Proceedings of the North American Crane Workshop
Vigilance plays an important role in the detection of possible threats and reducing the risk of predation, including during the incubation period. We examined the visual vigilance of incubating whooping cranes (Grus americana) in Juneau County, Wisconsin, during the 2019 nesting season. We deployed 9 trail cameras and tagged crane presence and behavior in 32,801 photos which were used in our analysis. We assessed individual nest and environmental variables and their effects on vigilant behavior of incubating cranes using linear mixed-models. Vigilant behavior was defined by a posture in which the crane’s head was up, neck was erect, …
How Stressful Is It To Move? Whooping Crane Glucocorticoid Response During Facility Transfer, Megan E. Brown, Christopher Martin, Christopher Crowe, Sprina Lui, Nucharin Songsasen,
How Stressful Is It To Move? Whooping Crane Glucocorticoid Response During Facility Transfer, Megan E. Brown, Christopher Martin, Christopher Crowe, Sprina Lui, Nucharin Songsasen,
Proceedings of the North American Crane Workshop
The ability to transfer animals between different facilities for genetic management is a critical component to the success of any cooperatively managed captive animal population despite the high cost and the need for a high level of coordination in logistical planning. Two issues of concern are the magnitude of potential stress responses incurred during shipment of adult cranes to a new facility and the duration of elevated glucocorticoid production during the acclimation periods. The objectives of this project were to assess adrenal responses of whooping cranes (Grus americana) during transfer from the Patuxent Wildlife Research Center (PWRC) to …
Initial Evaluation Of Cyclic Adenosine Monophosphate Enzyme Immunoassay For Use With Crane Semen Samples, Megan E. Brown, Kim Boardman, Katie L. Edwards
Initial Evaluation Of Cyclic Adenosine Monophosphate Enzyme Immunoassay For Use With Crane Semen Samples, Megan E. Brown, Kim Boardman, Katie L. Edwards
Proceedings of the North American Crane Workshop
The management of ex situ and in situ populations of many wildlife species requires detailed knowledge of a species’ reproductive biology. For species such as cranes, where artificial insemination is a critical component of ex situ management strategies, understanding normal sperm function is especially important. Previous research has shown that captive cranes exhibit highly variable production and quality of semen samples produced by individual males and high levels of variation of cell concentration and motility across different species. Cyclic adenosine monophosphate (cyclic AMP) has been implicated in regulating sperm function, such as cell motility, and may affect an individual’s ability …
Summary Of Mortality Among Captive Cranes At The International Crane Foundation: 2000-2020, Barry K. Hartup, Robert Phillips
Summary Of Mortality Among Captive Cranes At The International Crane Foundation: 2000-2020, Barry K. Hartup, Robert Phillips
Proceedings of the North American Crane Workshop
We reviewed mortalities of captive cranes at the International Crane Foundation (ICF) between 2000 and 2020 to provide broad insights into contemporary factors affecting the collection’s health and survival. Sixty-three deaths were documented in 13 of 15 crane species held in the ICF collection. The mean annual mortality during the study was 2.6% and the mean age (±SD) at death was 28.4 (±12.7) years. The overall total number of deaths of males and females was similar, but there was an association between sex and death of adult versus geriatric (>25 years) cranes (P < 0.01); males were more likely to die at geriatric age than females. Deaths were commonly associated with chronic health and management problems (n = 44, 79%) versus …
Mississippi Sandhill Crane Conservation Update 2017-2019, Scott G. Hereford, Angela J. Dedrickson
Mississippi Sandhill Crane Conservation Update 2017-2019, Scott G. Hereford, Angela J. Dedrickson
Proceedings of the North American Crane Workshop
To manage crane habitat on the Mississippi Sandhill Crane National Wildlife Refuge during 2017-2019, 5,822 ha were treated with prescribed burns, 648 ha of woody vegetation were removed, 97 ha of invasive plants were chemically treated, and 1.2 ha of crops were planted. Mississippi sandhill crane (Grus canadensis pulla) use responded to habitat treatment; 348 of 349 VHF radio locations were in treated areas. There were 316 target predators removed. Eighteen captive-reared juveniles were acclimated and released. We detected an average of 38 nests per year, including a record 40 nests in 2019. Fifteen chicks fledged in 2019, …
Whooping Crane Nest Building In Southwest Indiana, Amy J. Kearns, Hillary L. Thompson, Allisyn-Marie T. Y. Gillet
Whooping Crane Nest Building In Southwest Indiana, Amy J. Kearns, Hillary L. Thompson, Allisyn-Marie T. Y. Gillet
Proceedings of the North American Crane Workshop
The first documented case of whooping crane (Grus americana) nest building in Indiana is described. During spring 2015, a pair of whooping cranes did not leave their wintering grounds in Gibson County, Indiana, to return to their summering area in Wisconsin. Three nest platforms were discovered after the death of the female crane. To date, this is the only documented example of a whooping crane pair in the reintroduced Eastern Migratory Population (EMP) building nest platforms outside of Wisconsin. Although fidelity to the core nesting areas in Wisconsin is strong, and natal dispersal is usually <30 km, this example from Indiana shows that whooping cranes in the EMP may have the potential to pioneer nesting areas far outside of core reintroduction areas.
The Impact Of Marking On Cranes: An Issue Paper, Anne E. Lacy, Barry K. Hartup, David A. Brandt
The Impact Of Marking On Cranes: An Issue Paper, Anne E. Lacy, Barry K. Hartup, David A. Brandt
Proceedings of the North American Crane Workshop
As crane researchers and conservationists, our overarching objective is to learn and gather information about our study subjects while doing as little harm as possible. New technologies may be emerging too rapidly for researchers to assess the effectiveness or potential adverse effects of the devices, despite the ease and increasing accuracy of the information they provide. Researchers need to be able to gather information to answer various questions in a way that balances ethics and expense. With marking of cranes as a focal point, we discuss issues surrounding crane research based on various techniques, some health issues that are a …
Effects Of Release Techniques On Parent-Reared Whooping Cranes In The Eastern Migratory Population, Hillary L. Thompson, M. Susanna Glass, Marianne M. Wellington, Kim H. Boardman, Glenn H. Olsen
Effects Of Release Techniques On Parent-Reared Whooping Cranes In The Eastern Migratory Population, Hillary L. Thompson, M. Susanna Glass, Marianne M. Wellington, Kim H. Boardman, Glenn H. Olsen
Proceedings of the North American Crane Workshop
Reintroduction of an Eastern Migratory Population (EMP) of whooping cranes (Grus americana) in the United States by release of captive-reared individuals began in 2001. As of 2020, the EMP has approximately 21 breeding pairs and has had limited recruitment of wild-hatched individuals, thus captive-reared juveniles continue to be released into breeding areas in Wisconsin to maintain the population. We investigated the effects of release techniques on survival, behavior, site fidelity, and conspecific associations of 42 captive-parent-reared whooping cranes released during 2013-2019 into the EMP. Individuals were monitored intensively post-release, then as a part of a long-term monitoring program, …
Surveys And Population Estimates Of A Distinctive Subpopulation Of Sandhill Cranes In The Fraser River Lowlands Of British Columbia, Myles M. Lamont
Surveys And Population Estimates Of A Distinctive Subpopulation Of Sandhill Cranes In The Fraser River Lowlands Of British Columbia, Myles M. Lamont
Proceedings of the North American Crane Workshop
A poorly understood subpopulation of sandhill cranes (Grus canadensis) breeds at scattered locations in the lower Fraser River Valley on the south coast of British Columbia. The area also harbors the northernmost population of overwintering sandhill cranes anywhere in its range. While sporadic monitoring has been carried out since the mid-1960s, no formal survey efforts have been attempted for the entire Fraser River lowland subpopulation. During 2014-2019 we collected groundbased survey data on presence and occupation of territories within the study area; this effort was supported by citizen science contributions. On 20 June 2019, we flew a fixed-width, …
Quantifying Wildlife Use Of Escape Ramps Along A Fenced Highway, Alex J. Jensen, John D. Perrine, Andrew A. Schaffner, Robert A. Brewster, Anthony J. Giordano, Morgan Robertson, Nancy R. Siepel
Quantifying Wildlife Use Of Escape Ramps Along A Fenced Highway, Alex J. Jensen, John D. Perrine, Andrew A. Schaffner, Robert A. Brewster, Anthony J. Giordano, Morgan Robertson, Nancy R. Siepel
Human–Wildlife Interactions
Wildlife exclusion fencing can significantly reduce wildlife–vehicle collisions. However, some animals breach the fence and become trapped in the highway corridor, thereby increasing risk of a wildlife–vehicle collision. An emerging solution to this problem is the installation of earthen escape ramps (i.e., jumpouts), which allow trapped animals to escape the highway corridor. Few studies have quantified wildlife use of jumpouts, and none have investigated intraspecific differences in use. We used camera traps to document wildlife use of 4 2m-high jumpouts associated with wildlife exclusion fencing along Highway 101 near San Luis Obispo, California, USA, from 2012 to 2017. We surveyed …
Interested In Serving As An Associate Editor For Human–Wildlife Interactions?
Interested In Serving As An Associate Editor For Human–Wildlife Interactions?
Human–Wildlife Interactions
This is a call for associate editors for Human-Wildlife Interactions.
Florida Sandhill Crane Relocates Egg During Incubation, Timothy A. Dellinger, Miranda L. Watford, Ronald R. Bielefeld
Florida Sandhill Crane Relocates Egg During Incubation, Timothy A. Dellinger, Miranda L. Watford, Ronald R. Bielefeld
Proceedings of the North American Crane Workshop
Anecdotal accounts of birds moving their eggs to a new location have been reported in shorebirds, waterfowl, and woodpeckers. We report relocation of an egg, 2 days prior to hatching, by an adult Florida sandhill crane (Grus canadensis pratensis). We do not know why the egg was moved, but egg movement among other species appears to be associated with nest disturbance by humans, animals, or environmental conditions.
Whooping Crane Stay Length In Relation To Stopover Site Characteristics, Andrew J. Caven, Aaron T. Pearse, David A. Brandt, Mary J. Harner, Greg D. Wright, David M. Baasch, Emma M. Brinley Buckley, Kristine L. Metzger, Matthew R. Rabbe,, Anne E. Lacy
Whooping Crane Stay Length In Relation To Stopover Site Characteristics, Andrew J. Caven, Aaron T. Pearse, David A. Brandt, Mary J. Harner, Greg D. Wright, David M. Baasch, Emma M. Brinley Buckley, Kristine L. Metzger, Matthew R. Rabbe,, Anne E. Lacy
Proceedings of the North American Crane Workshop
Whooping crane (Grus americana) migratory stopovers can vary in length from hours to more than a month. Stopover sites provide food resources and safety essential for the completion of migration. Factors such as weather, climate, demographics of migrating groups, and physiological condition of migrants influence migratory movements of cranes (Gruidae) to varying degrees. However, little research has examined the relationship between habitat characteristics and stopover stay length in cranes. Site quality may relate to stay length with longer stays that allow individuals to improve body condition, or with shorter stays because of increased foraging efficiency. We examined this …
Fish And Invertebrate Use Of Restored Vs. Natural Oyster Reefs In A Shallow Temperate Latitude Estuary, Jonathan H. Grabowski, Christopher J. Baillie, Adam Baukus, Rachael Carlyle, F. Joel Fodrie, Rachel K. Gittman, A. Randall Hughes, David L. Kimbro, Juhyung Lee, Hunter S. Lenihan, Sean P. Powers, Kevin Sullivan
Fish And Invertebrate Use Of Restored Vs. Natural Oyster Reefs In A Shallow Temperate Latitude Estuary, Jonathan H. Grabowski, Christopher J. Baillie, Adam Baukus, Rachael Carlyle, F. Joel Fodrie, Rachel K. Gittman, A. Randall Hughes, David L. Kimbro, Juhyung Lee, Hunter S. Lenihan, Sean P. Powers, Kevin Sullivan
University Faculty and Staff Publications
Coastal marine habitats continue to be degraded, thereby compelling largescale restoration in many parts of the world. Whether restored habitats function similarly to natural habitats and fully recover lost ecosystem services is unclear. In estuaries, oyster reefs have been degraded by multiple anthropogenic activities including destructive fishing practices and reduced water quality, motivating restoration to maintain oyster fisheries and other ecosystem services, often at relatively high cost. We compared fish and invertebrate communities on recently restored (0–1 year post-restoration), older restored (3–4 years post-restoration), and natural oyster reefs to determine if and when restored reefs support functionally similar faunal communities. …
Understanding Caribou Population Cycles, Jack R. St. John
Understanding Caribou Population Cycles, Jack R. St. John
Undergraduate Theses, Professional Papers, and Capstone Artifacts
The complex population dynamics of caribou (Rangifer tarandus) were studied to determine the patterns of their population cycles and the processes driving them. It is well established, via previous archaeological research and Indigenous knowledge, that large migrating caribou herds found in and around the tundra at northern latitudes experience population boom and busts roughly every several decades. However, the processes driving the dynamics of these cycles are relatively unknown, which makes managing caribou herds for recreational and subsistence harvests difficult. It has been hypothesized that a combination of intrinsic and extrinsic factors shape these cycles, with density-dependence, predation, …
In The News, Meredith Purintun, Rosanna M. Vail
In The News, Meredith Purintun, Rosanna M. Vail
Human–Wildlife Interactions
Items in the news.
In Memory: James E. “Jim” Miller, Scott R. Craven
In Memory: James E. “Jim” Miller, Scott R. Craven
Human–Wildlife Interactions
This "In Memory" article honors the life and contributions of James E. “Jim” Miller.
Trico: A Novel Repellent For Preventing Deer Damage To Ornamental Shrubs, Paul D. Curtis, Brian C. Eshenaur
Trico: A Novel Repellent For Preventing Deer Damage To Ornamental Shrubs, Paul D. Curtis, Brian C. Eshenaur
Human–Wildlife Interactions
Homeowners whose landscape plants are repeatedly browsed by white-tailed deer (Odocoileus virginianus; deer) desire repellent products that are effective and long-lasting. We conducted a 12-week trial from January 6 through April 5, 2021 to test the duration and efficacy of a novel deer repellent (Trico®) relative to Plantskydd®, a commonly used deer repellent, and untreated plants. We placed treated and control Japanese yew shrubs (Taxus media ‘Hicksii’) at 4 homeowner sites (Birch Hills Drive, Fairview Crescent, Pinegrove Ave., and St. Paul Blvd.) near Rochester, New York, USA, where we detected deer presence. Yews are frequently eaten …
Nighttime Traffic Volume Predicts Risk Of Deer–Vehicle Collisions, James H. Stickles, Bradley S. Cohen, David A. Osborn, Robert J. Warren, Gino J. D'Angelo, Karl V. Miller
Nighttime Traffic Volume Predicts Risk Of Deer–Vehicle Collisions, James H. Stickles, Bradley S. Cohen, David A. Osborn, Robert J. Warren, Gino J. D'Angelo, Karl V. Miller
Human–Wildlife Interactions
Annually, in the United States, >1 million deer (Odocoileus spp.)–vehicle collisions are reported, resulting in losses of $4.6 billion in vehicle damage and medical expenses. Wildlife and transportation managers require better information about traffic volumes relative to seasonal and diurnal deer movement patterns to appropriately evaluate the risks associated with deer–vehicle collisions (DVCs). We incorporated traffic volume data with DVC data and the movement rates and incidences of road crossings by white-tailed deer (O. virginianus) to evaluate if traffic volume or deer behaviors mediate the incidence of DVCs along a high-volume interstate highway in Morgan County in …
Diversity, Equity, And Inclusion Efforts In Human–Wildlife Interactions, Rosanna M. Vail
Diversity, Equity, And Inclusion Efforts In Human–Wildlife Interactions, Rosanna M. Vail
Human–Wildlife Interactions
The managing editor interviews the editor-in-chief about the journal's current efforts and next steps toward increasing diversity, equity, and inclusion.
Ms Environmental Biology Capstone Project, Catherine Shapiro
Ms Environmental Biology Capstone Project, Catherine Shapiro
Regis University Student Publications (comprehensive collection)
Chapter 1: Artificial light at night disrupts the biology of fishes. Chapter 2: Grant proposal to determine how artificial light at night affects Pumpkinseed fish. Chapter 3: Management of pinyon-juniper woodland impacts the occupancy of Pinyon Jays. Chapter 4: Stakeholder analysis of horseshoe crab fishing and its impacts on the Red Knot and biomedical industry.