Relevant bibliographies by topics / Alligator mississippiensis

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Academic literature on the topic 'Alligator mississippiensis'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Alligator mississippiensis"

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STOUT, JEREMY B. "New early Pleistocene Alligator (Eusuchia: Crocodylia) from Florida bridges a gap in Alligator evolution." Zootaxa 4868, no. 1 (October 23, 2020): 41–60. http://dx.doi.org/10.11646/zootaxa.4868.1.3.

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The American Alligator (Alligator mississippiensis) is one of two species of Alligator in the modern world. It is only distantly related to the other extant species (A. sinensis), with much closer relatives known from the geologic past of North America. A disparity exists, though, in the fossil record between A. mississippiensis and its close relative, the late Miocene (?)—early Pliocene A. mefferdi. While A. mississippiensis is known from the mid-Pleistocene and later, few Alligator remains were known from the earliest Pleistocene of North America until the discovery of the Haile 7C and 7G early Pleistocene (Blancan Land Mammal Age) sites from Alachua County, Florida. The Haile alligators exhibit a suite of characters from both A. mississippiensis and A. mefferdi, displaying intermediate morphology in time. The Haile alligators are distinct from either of the aforementioned taxa, and a new species, Alligator hailensis is suggested, bridging an important gap in the evolution of the American Alligator.
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Erickson, Gregory M. "Toothlessness in American Alligators, Alligator Mississippiensis." Copeia 1996, no. 3 (August 1, 1996): 739. http://dx.doi.org/10.2307/1447542.

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3

Riordan, Casey, Jennifer Jacquet, and Becca Franks. "Investigating the welfare and conservation implications of alligator wrestling for American Alligators (Alligator mississippiensis)." PLOS ONE 15, no. 11 (November 13, 2020): e0242106. http://dx.doi.org/10.1371/journal.pone.0242106.

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Wildlife tourism attractions (WTA) are popular in the United States, but they may be harmful to the individual animals involved and we question whether they provide benefits to environmental conservation. Most research on the welfare and environmental implications of WTAs focuses on charismatic mammals, with few studies investigating these issues for reptiles. Here we examine alligator wrestling, including its impact on animal welfare and environmental conservation. Using a sample of 94 relevant YouTube videos of alligator wrestling in Florida representing 16 different venues, we coded the environmental and behavioral characteristics evident in each video. We then performed a content analysis of wrestlers’ narration in a subset of 51 videos to analyze the environmental awareness and educational components of alligator wrestling. Our results show systemic welfare harm: 11 venues housed adult alligators together with conspecifics, 96% of alligator wrestling performances facilitated direct contact in the form of physical restraint by one or more human wrestlers, and as many as 96% of the videos did not show a suitable water or waterside features for captive alligators. Furthermore, 12% of performances showed wrestlers flipping alligators onto their backs while 16% showed wrestlers tying alligators’ jaws shut, both of which are known to be acute stressors. Finally, just under half of alligator wrestling commentary (49%) addressed environmental conservation topics, and much of this commentary included contradictory or misleading information that is not likely to benefit alligators in the wild. We argue that alligator wrestling serves no role in promoting positive relationships between humans, animals, and the environment, and instead furthers traditional notions of dominion that undermine welfare and conservation aims.
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Codd, Jonathan R., Kayleigh A. R. Rose, Peter G. Tickle, William I. Sellers, Robert J. Brocklehurst, Ruth M. Elsey, and Dane A. Crossley. "A novel accessory respiratory muscle in the American alligator ( Alligator mississippiensis )." Biology Letters 15, no. 7 (July 2019): 20190354. http://dx.doi.org/10.1098/rsbl.2019.0354.

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The muscles that effect lung ventilation are key to understanding the evolutionary constraints on animal form and function. Here, through electromyography, we demonstrate a newly discovered respiratory function for the iliocostalis muscle in the American alligator ( Alligator mississippiensis ). The iliocostalis is active during expiration when breathing on land at 28°C and this activity is mediated through the uncinate processes on the vertebral ribs. There was also an increase in muscle activity during the forced expirations of alarm distress vocalizations. Interestingly, we did not find any respiratory activity in the iliocostalis when the alligators were breathing with their body submerged in water at 18°C, which resulted in a reduced breathing frequency. The iliocostalis is an accessory breathing muscle that alligators are able to recruit in to assist expiration under certain conditions.
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Squires, Michiko, Avishka Godahewa, Justin R. Dalaba, Laura A. Brandt, and Frank J. Mazzotti. "Have you seen a skinny alligator in South Florida?" EDIS 2019, no. 6 (December 20, 2019): 3. http://dx.doi.org/10.32473/edis-uw460-2019.

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The American alligator (Alligator mississippiensis) is an effective indicator for restoration of more natural patterns of water levels and flows through the Everglades. The Florida Everglades is a highly modified system, so monitoring health of alligators can inform how different areas of this large ecosystem are doing. Based on an increase in reports of very skinny alligators, biologists and natural resource managers are seeking help from the public to better understand where and when this problem occurs. This fact sheet serves as a guide for citizen scientists on how to score alligator body condition and report sightings of very skinny or unhealthy alligators.http://edis.ifas.ufl.edu/uw460
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Asa, Cheryl S., Gary D. London, Ronald R. Goellner, Norman Haskell, Glenn Roberts, and Crispen Wilson. "Thermoregulatory Behavior of Captive American Alligators (Alligator mississippiensis)." Journal of Herpetology 32, no. 2 (June 1998): 191. http://dx.doi.org/10.2307/1565296.

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Novak, Susan S., and Richard A. Seigel. "GRAM-NEGATIVE SEPTICEMIA IN AMERICAN ALLIGATORS (ALLIGATOR MISSISSIPPIENSIS)." Journal of Wildlife Diseases 22, no. 4 (October 1986): 484–87. http://dx.doi.org/10.7589/0090-3558-22.4.484.

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8

Young, Bruce A., James Potter, Joshua Blanchard, Lucas Knoche, and Tatyana Kondrashova. "Cardiac response to stimulation and stress in the American alligator (Alligator mississippiensis)." Amphibia-Reptilia 41, no. 4 (May 12, 2020): 547–51. http://dx.doi.org/10.1163/15685381-bja10013.

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Abstract Previous descriptions of the direction (tachycardia versus bradycardia), magnitude, and duration of the cardiac stimulation/stress response of the American alligator (Alligator mississippiensis) have been contradictory. Superficial EKG leads were used to quantify heart rate while presenting a graded series of stimuli to a cohort of 5 sub-adult alligators. Only tachycardic responses were recorded. Stress (manual restraint and transport) induced a nearly 3-fold increase over the resting heart rate (∼17 bpm), which decreased only 7 bpm over 40 minutes in a stimulus-free environment. Lower-level stimulation (i.e., exposure to room light) produced a significantly smaller response than did higher-level stimulation (i.e., physical contact), both responses were transitory, lasting approximately 120 s.
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Bickler, P. E., R. G. Spragg, M. T. Hartman, and F. N. White. "Distribution of ventilation in American alligator Alligator mississippiensis." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 249, no. 4 (October 1, 1985): R477—R481. http://dx.doi.org/10.1152/ajpregu.1985.249.4.r477.

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The regional distribution of ventilation in the multicameral lung of spontaneously ventilating alligators (Alligator mississippiensis) was studied with 133Xe scintigraphy. Frequent gamma camera images of 133Xe washin and washout were obtained and processed to allow evaluation of regional ventilation. Washin of 133Xe to equilibrium occurred in three to four breaths in anterior, central, and posterior compartments. Washin was most rapid in the posterior compartment and slowest in the anterior. The structure of the lungs and distribution of ventilation of inspired gas is consistent with the rapid radial spread of gas through a parallel arrangement of lung units surrounding the central intrapulmonary bronchus. Washout to equilibrium of 133Xe from all compartments occurred within three to four breaths. This rapid washin and washout of gas to all parts of the lung stands in contrast to the lungs of turtles and snakes, in which the caudal air sacs are relatively poorly ventilated.
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Squires, Michiko, Avishka Godahewa, Justin R. Dalaba, Laura A. Brandt, and Frank J. Mazzotti. "Have you seen a skinny alligator in south Florida? [trifold brochure]." EDIS 2019, no. 6 (December 20, 2019): 2. http://dx.doi.org/10.32473/edis-uw461-2019.

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This is a trifold brochure based on the fact sheet by the same title, http://edis.ifas.ufl.edu/uw460 The American alligator (Alligator mississippiensis) is an effective indicator for restoration of more natural patterns of water levels and flows through the Everglades. The Florida Everglades is a highly modified system, so monitoring health of alligators can inform how different areas of this large ecosystem are doing. Based on an increase in reports of very skinny alligators, biologists and natural resource managers are seeking help from the public to better understand where and when this problem occurs. This brochure serves as a guide for citizen scientists on how to score alligator body condition and report sightings of very skinny or unhealthy alligators.https://edis.ifas.ufl.edu/uw461
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Dissertations / Theses on the topic "Alligator mississippiensis"

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Rauschenberger, Richard Heath. "Developmental mortality in american alligators (alligator mississippiensis) exposed to organochlorine pesticides." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0008223.

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Thesis (Ph.D.)--University of Florida, 2004.
Typescript. Title from title page of source document. Document formatted into pages; contains 233 pages. Includes Vita. Includes bibliographical references.
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Crawford, Jared Louis. "Seasonal variation in thyroxine in the American alligator (Alligator mississippiensis)." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/303.

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Male and female alligators ranging from 58 cm to 361 cm in length (N=1054) were captured and their blood was sampled between 9 A.M. and midnight from June 2000 - June 2002 at the Rockefeller Wildlife Refuge in Grand Chenier, LA. Animals were captured in a variety of habitats including marsh, open water, canals, and ponds. Total thyroid hormones were measured by radioimmunoassay. Four criteria were used to evaluate changes in hormone levels: sex, total length, season, and time of day. Thyroxine (T4) varied over a wide range from 0.5 to 57 ng/mL. Triiodothyronine (T3) levels were below the sensitivity of the assay (<0.6ng/mL). A distinct seasonal peak in T4 was observed between December and April, peaking in March with highest mean T4 levels observed in the spring. Mean T4 declined significantly from the spring to an intermediate summer mean and declined significantly again in the winter. No T4 differences between the sexes were observed. Mean T4 was highest in juveniles, significantly lower in subadults, and significantly lower still in adults. Highest levels were found between 5 P. M. and midnight. With values up to 57 ng/ml in the spring, alligators exhibit T4 levels among the highest recorded for reptiles.
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Zweig, Christa L. "Body condition index analysis for the American alligator (Alligator mississippiensis)." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000836.

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4

Rice, Amanda Nicole. "Diet and condition of American alligators (Alligator mississippiensis) in three central Florida lakes." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004367.

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5

Membreno, Nelson Armando. "Effects of eggshell removal on embryonic skeletal development in the American alligator (Alligator mississippiensis)." CSUSB ScholarWorks, 2017. https://scholarworks.lib.csusb.edu/etd/529.

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The eggshell of reptiles is essential for not only protecting the embryo, but can also serve as source of calcium for embryonic skeletal development. Whereas embryonic lepidosaurs and chelonians rely on their yolk sac for calcium during development, embryonic archosaurs mobilise eggshell calcium supply to both the embryo and the yolk sac. By the time archosaurs hatch, their residual yolk sacs have a calcium content equal or greater than at time of oviposition, which is used to support post-hatching growth. To date, no study has looked into how removal of the calcareous eggshell affects embryonic development in archosaurs. I tested how the removal of the calcareous eggshell affects embryonic and hatchling growth and biomechanic function of the skeleton in embryos and hatchlings of the American alligator (Alligator mississippiensis). Experimental eggs had their eggshell manually peeled, while control eggs were sham handled but otherwise not altered. Sampling of eggs occurred on a weekly basis until the end of incubation. Embryos, yolk sacs, and eggshells were removed and analyzed for morphological, histological and biomechanical parameters. Results show that at the time of eggshell peeling yolk sac calcium reserves were sufficient for experimental embryos to develop, but animals hatched in diminutive state. Serial clearing and staining of embryos revealed that onset of bone mineralization was similar for both treatment groups. Growth trajectory of experimental hatchlings parallelled that of control animals, without compensatory growth. Experimental hatchlings were observed to have flexible lower jaws and produced a weaker bite force than control hatchlings. Cross-sections of the mandible and femoral mid-diaphysis had a significantly reduced cross-sectional area in experimental hatchlings. I conclude that loss of the calcareous eggshell during incubation leads to severe constraint on growth and biomechanics of the alligator skeleton.
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Bryan, Teresa A. "Morphological and constituent analyses of American alligator (Alligator mississippiensis) eggshells from contaminated and reference lakes." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010640.

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Strickland, Bradley Austin. "Spatial ecology and population estimation of the American alligator (Alligator mississippiensis) in inland systems of Mississippi." Thesis, Mississippi State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1596102.

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Wildlife management and conservation frequently rely on understanding mechanisms that influence distribution and abundance of animals. I quantified space use for a population of inland riverine adult male alligators in Mississippi. Results indicated habitat selection is a scale-dependent process and aquatic vegetation, water depth, and water temperature may be important factors influencing alligator foraging and thermoregulation. Apparent habitat suitability and low alligator density did not manifest in an observed body size-based dominance hierarchy. I also analyzed long-term Mississippi alligator spotlight survey data for trends and effects of environmental covariates on counts. Model results indicated alligator counts have increased over time. This response likely reflects benefits accrued from decades of protection and wetland conservation. Distance sampling does not appear to be a feasible monitoring technique for riverine alligator populations. Nevertheless, it is important that survey protocols and monitoring programs account for imperfect detection and model important covariates.

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Brandt, Laura A. "The status and ecology of the American alligator (Alligator mississippiensis) in Par Pond, Savannah River site." FIU Digital Commons, 1989. http://digitalcommons.fiu.edu/etd/1788.

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Par Pond is a man-made 1120 ha cooling reservoir located on the Savannah River Site near Aiken, South Carolina. From 1972-1978 a detailed study on the status of the alligator in Par Pond was conducted by Tom Murphy (unpub. MS thesis Univ. of GA, 1977). Murphy estimated that approximately 110 alligators inhabited Par Pond with an adult (> 1.8 m) to juvenile (< 1.8 m) ratio of (1.8:1), an overall sex ratio of 3.2:1, and an average of only 2.3 nests/yr. The purpose of this study (1986-1989) was to determine the current population size and structure, determine how the population has changed in the last 15 years and to examine growth and survival of juvenile alligators. Data were collected by monthly night-time eyeshine counts aerial surveys, capturing animals, and locating and following the fate of nests. There was a strong positive correlation between water temperature and the number of alligators observed during eyeshine counts. Both eyeshine counts and aerial surveys were highest in spring and varied seasonally. A total of 184 different non-hatchling and 157 hatchling alligators were captured between May 1986 and November 1988. Population estimates and size distributions based on capture data indicate that over the last 15 years the population has increased from approximately 110 to 200 alligators, and the size distribution has shifted from one dominated by large adults to one that has a higher proportion of juveniles. The current sex ratio (2.6:1) is not significantly different from that reported by Murphy (1977, 3.2:1). However, the average number of nests/yr has increased from 2.3 to 4.0. Data on juvenile growth and survival show that the growth rate of hatchlings (32.9 cm/yr total length) is greater than that of animals age 1-3 (21.6 cm/yr total length) and survival of all ages is variable between years and between clutches. Results from this study indicate that from 1972-988 the population has increased ac an average exponential rate of 6 % per year. If conditions in Par Pond do not change, the population size should continue to increase.
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Temsiripong, Yosapong. "Growth and survival rates of wild and repatriated hatchling American alligators (Alligator mississippiensis) in central Florida lakes." [Florida] : State University System of Florida, 1999. http://etd.fcla.edu/etd/uf/1999/amp7407/temsiripong.pdf.

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Thesis (M.S.)--University of Florida, 1999.
Title from first page of PDF file. Document formatted into pages; contains xi, 55 p.; also contains graphics (some colored). Vita. Includes bibliographical references (p. 49-54).
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Rosenblatt, Adam. "Factors Influencing Movements and Foraging Ecology of American Alligators (Alligator mississippiensis) in a Dynamic Subtropical Coastal Ecosystem." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/900.

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Top predators can have large effects on community and population dynamics but we still know relatively little about their roles in ecosystems and which biotic and abiotic factors potentially affect their behavioral patterns. Understanding the roles played by top predators is a pressing issue because many top predator populations around the world are declining rapidly yet we do not fully understand what the consequences of their potential extirpation could be for ecosystem structure and function. In addition, individual behavioral specialization is commonplace across many taxa, but studies of its prevalence, causes, and consequences in top predator populations are lacking. In this dissertation I investigated the movement, feeding patterns, and drivers and implications of individual specialization in an American alligator (Alligator mississippiensis) population inhabiting a dynamic subtropical estuary. I found that alligator movement and feeding behaviors in this population were largely regulated by a combination of biotic and abiotic factors that varied seasonally. I also found that the population consisted of individuals that displayed an extremely wide range of movement and feeding behaviors, indicating that individual specialization is potentially an important determinant of the varied roles of alligators in ecosystems. Ultimately, I found that assuming top predator populations consist of individuals that all behave in similar ways in terms of their feeding, movements, and potential roles in ecosystems is likely incorrect. As climate change and ecosystem restoration and conservation activities continue to affect top predator populations worldwide, individuals will likely respond in different and possibly unexpected ways.
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Books on the topic "Alligator mississippiensis"

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Harrington, Pauline Mary. Temperature-dependent sex determination in the American alligator - Alligator Mississippiensis. Manchester: University of Manchester, 1996.

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Coriat, Anne-Marie. The molecular analysis of temperature dependent sex deterimination in Alligator mississippiensis. Manchester: University of Manchester, 1994.

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U.S. Fish and Wildlife Service, ed. American alligator: Alligator mississippiensis. [Washington, D.C.?]: The Service, 1995.

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1958-, Rowe Todd, and Grill Yolande, eds. Alligator mississippiensis: A proving of the American alligator. [Phoenix, Ariz: Phoenix Homeopathic Study Group, 2002.

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1953-, Rowe Timothy, Brochu Christopher Andrew 1967-, and Kishi Kyoko, eds. Cranial morphology of Alligator mississippiensis and phylogeny of Alligatoroidea. Northbrook, Ill: Society of Vertebrate Paleontology, 1999.

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Book chapters on the topic "Alligator mississippiensis"

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Ulinski, Philip S. "Neuronal Organization of the Striatum in the Alligator, Alligator mississippiensis." In The Forebrain in Nonmammals, 119–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75367-1_10.

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Reports on the topic "Alligator mississippiensis"

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Seigel, R. A., L. A. Brandt, J. L. Knight, and S. S. Novak. Ecological studies on the American alligator (Alligator mississippiensis) on the Savannah River Plant. Office of Scientific and Technical Information (OSTI), June 1986. http://dx.doi.org/10.2172/5696923.

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Seigel, R. A., L. A. Brandt, J. L. Knight, and S. S. Novak. Ecological studies on the American alligator (Alligator mississippiensis) on the Savannah River Plant. Comprehensive Cooling Water Study: Final report. Office of Scientific and Technical Information (OSTI), June 1986. http://dx.doi.org/10.2172/10125788.

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