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Dissertations / Theses on the topic 'Pseudapis'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Whiting, Arthur. "Population ecology of the western chorus frog, Pseudacris triseriata." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80896.

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The relationship between habitat preferences and rates of dispersal and directional orientation across different vegetations was investigated using captures from an array of drift fences for Pseudacris triseriata , at a breeding pond near Boucherville, Quebec. Growth rates for juveniles were similar across the study area, suggesting that food was not limiting and movement is related to habitat preference. Frog residence time in habitat enclosures, and between fence arrays was significantly longer for frogs in humid prairie vegetation compared to those in shrubby vegetation. The number o

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2

Hebenstreit, Lisa. "Conservation Status of the Illinois Chorus Frog (Pseudacris illinoensis) in Madison County, Illinois." Thesis, Southern Illinois University at Edwardsville, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10844395.

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<p> The Illinois Chorus Frog (<i>Pseudacris illinoensis</i>) is a state-threatened species that has been impacted by development. <i> Pseudacris illinoensis</i> is found in nine counties in Illinois, predominately along the Illinois River, however, there is an isolated population in Madison County. The population once spanned 15 km<sup>2</sup>, into Granite City and South Roxana, but is now is limited to one isolated population near a mitigation site that was purchased in 1996 for the development of Interstate 255. The last population estimate was in 2002 and was estimated to be 245 individual

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3

Maples, Michael Jonathan. "AN INVESTIGATION OF THE EFFECT OF MALATHION ON ADAPTIVE PLASTICITY OF PSEUDACRIS SIERRA." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1478.

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This thesis is composed of two chapters. Chapter one reviews what is known about adaptive plasticity in response to predators, describes the physiological systems involved in such plasticity, and outlines the evolutionary consequences of adaptive plasticity. Chapter two describes a scientific experiment that investigates how malathion may impact adaptive plasticity in the Sierran Treefrog, Pseudacris sierra. Anuran tadpoles suffer high mortality rates due to predation. In response to strong selective forces relating to these high predation rates, tadpoles evolved the ability to adaptively resp

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4

Sias, Jaime. "Natural history and distribution of the Upland Chorus Frog, Pseudacris feriarum Baird, in West Virginia." Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=629.

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Theses (M.S.)--Marshall University, 2006.<br>Title from document title page. Includes abstract. Document formatted into pages: contains xiii, 82 p. including col. illustrations and maps. Bibliography: p. 66-76.

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5

Cambridge, Tucker. "Species Distribution and Conservation Genetics of the Upland and Midland Chorus Frogs (Pseudacris) in Kentucky." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/3063.

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The upland (Pseudacris feriarum) and midland (P. triseriata) chorus frogs are closely related cryptic species that are best distinguished genetically. The distribution of these species within the Commonwealth of Kentucky has previously been defined by only a handful of genetic samples, making delineation of range limits for each species difficult. Accurate understanding of species distributions, and the genetic structure within them, are vitally important for conservation management of amphibian species. In this study, I have collected genetic samples from across the putative ranges of P. tris

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6

Benard, Michael Francis. "Local adaptation and phenotypic plasticity in response to predators : an investigation using the Pacific treefrog (Pseudacris regilla) /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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7

Wilhite, Kyle. "Sexual Selection in the Spring Peeper, Pseudacris crucifier , and Multimodal Signaling in the Tungara frog, Physalaemus pustulosus." Thesis, Salisbury University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1525306.

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<p> Communication facilitates almost every social interaction between organisms and this communication is especially important for mate acquisition. Anuran amphibians are an excellent model system to study mate choice behaviors and sexual selection. In this work I recorded male calls of the spring peeper, <i> Pseudacris crucifer</i>, between two populations (Maryland and Louisiana) and analyzed call parameters such as frequency, duration, and rise and fall time. I found differences in the frequency and the frequency sweep of the calls. I conducted choice experiments to test female mating prefe

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8

Contreras, Heidy Lorena. "Effects of natural history on osmoregulatory behaviors in two stream-dwelling frogs (Pseudacris cadaverina and P. regilla)." CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3253.

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Differences in osmoregulatory behaviors were studied in two stream-dwelling tree frogs (Pseudacris cadaverina and P. regilla) with different natural histories. This study supports the idea that the natural history of a species has a strong effect on behavior associated with osmoregulation.

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9

Degner, Jacob. "GENETIC AND PHENOTYPIC EVOLUTION IN THE ORNATE CHORUS FROG (PSEUDACRIS ORNATA): TESTING THE RELATIVE ROLES OF NATURAL SELECTION." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3160.

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Understanding how migration, genetic drift, and natural selection interact to maintain the genetic and phenotypic variation we observe in natural populations is a central goal of population genetics. Amphibians provide excellent model organisms for investigating the interplay between these evolutionary forces because amphibians are generally characterized by limited dispersal abilities, high philopatry, and are obligately associated with the areas around suitable habitats (e.g. breeding ponds). Thus, on relatively small geographic scales, the relative effects of all of these evolutionary force

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10

Thevenon, Sophie. "Dépression de consanguinité et caractérisation génétique de taxons menacés : application au cerf d'Eld (Cervus eldi) et au cerf sika du Vietnam (Cervus nippon pseudaxis)." Paris 6, 2001. http://www.theses.fr/2001PA066530.

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11

Rogers, Bryan William. "Geographic variability in components of the male advertisement call among populations of the northern spring peeper, Pseudacris crucifer crucifer." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0023/MQ50482.pdf.

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12

Dimitrie, David. "The effects of two insecticides on California anurans (Rana sierrae and Pseudacris sierra) and the implications for declining amphibian populations." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/368.

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Evidence is growing that agrochemicals are playing a role in the decline of amphibians in California. An area of concern is the Sierra Nevada Mountains, where insecticides used in the Central Valley are aerially transported to amphibian habitats. I examined the effects of two of these insecticides, endosulfan and chlorpyrifos, in two experiments on anuran larvae. For the first experiment I exposed Sierra Mountain yellow-legged frog (Rana sierrae) larvae starting at Gosner stage 25 to each insecticide for 63 d to determine median lethal concentrations (LC50) and sublethal effects on growth a

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13

Schattauer, Sarah Ann. "Non-Ranid Anurans of the Mio-Pliocene Gray Fossil Site, Tennessee." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1454.

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Researchers at the GFS, Washington County, Tennessee through the wet screening of nearly 100%of the sediment excavated at the site, recovered an extensive collection of anuran fossil elements. Until recently, these specimens have not been analyzed. The purpose here is the examination, description, and identification of all non-ranid anuran (frogsand toads) material using the following elements: ilium, urostyle, maxilla, frontoparietal, and last sacral vertebra. Anurans identified include Scaphiopus wardorum(extinct spadefoot toad), Bufo terrestris(southern toad), B. cf. B. marinus(giant neotro

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14

Rondeau, Sylvie L. "Variables determining buoyancy in juvenile mink frogs, Rana septentrionalis, with comparisons to boreal chorus frogs, Pseudacris triseriata maculata, and wood frogs, Rana sylvatica." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0028/MQ51793.pdf.

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15

de, Jong Westman Alexandra. "Examining the impacts of pesticide exposure on the survivorship and development of the Great Basin Spadefoot (Spea intermontana) and the Pacific Treefrog (Pseudacris regilla) in a laboratory environment." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/782.

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Amphibian populations are declining globally, and pesticides have been suggested as one of the contributing factors. Field experiments involving ponds immersed in agricultural environments have been observed to have dramatically lower biodiversity and amphibian abundance than ponds located in non-agricultural settings. There has been much work involving in situ pond experiments, and a plethora of laboratory pesticide experiments often involving test concentrations much higher than those observed in the field. To determine which pesticides impact amphibian embryo survivorship and tadpole dev

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16

Gilliland, Kenneth Lee. "THE PRESENCE OF MICROPTERUS SALMOIDES (LARGEMOUTH BASS) INFLUENCES THE POPULATIONS OF RANA DRAYTONII (CALIFORNIA RED-LEGGED FROG) AND PSEUDACRIS REGILLA (PACIFIC TREEFROG) IN TWO PONDS IN SANTA BARBARA COUNTY, CALIFORNIA." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/244.

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Alien fish have been implicated in the decline of Rana draytonii (California red-legged frog) and Pseudacris regilla (Pacific treefrog) populations. Micropterus salmoides (largemouth bass) is a common sport fish that has been introduced into the sympatric range of these two anuran species; however, no studies have investigated the individual influence that this alien fish has on these two species. I conducted M. salmoides control or eradication experiments during a four year study in two ponds within the Transverse Mountain Range of Santa Barbara County, California. Changes in the densities

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17

"Ecology of Chytridiomycosis in Boreal Chorus Frogs (Pseudacris maculata)." Doctoral diss., 2012. http://hdl.handle.net/2286/R.I.14639.

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abstract: Infectious diseases have emerged as a significant threat to wildlife. Environmental change is often implicated as an underlying factor driving this emergence. With this recent rise in disease emergence and the acceleration of environmental change, it is important to identify the environmental factors that alter host-pathogen dynamics and their underlying mechanisms. The emerging pathogen Batrachochytrium dendrobatidis (Bd) is a clear example of the negative effects infectious diseases can have on wildlife. Bd is linked to global declines in amphibian diversity and abundance. However,

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18

Lemmon, Emily Claire Moriarty. "Patterns and processes of speciation in North American chorus frogs (Pseudacris)." Thesis, 2007. http://hdl.handle.net/2152/3325.

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During speciation, populations become spatially separated from each other by biotic or abiotic factors, and this leads to genetic divergence and reproductive isolation. Here, I study the process of speciation and the patterns resulting from this process in the chorus frogs (Pseudacris). I first lay the foundation for this work by constructing phylogenies based on molecular data. I then address broad-scale questions regarding the abiotic factors thought to drive speciation. I examine evolution of reproductive signals within a phylogenetic context, and finally, I address fine-scale questions reg

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19

Whiting, Arthur V. "Factors affecting larval growth and development of the boreal chorus frog Pseudacris maculata." Phd thesis, 2010. http://hdl.handle.net/10048/1481.

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The boreal chorus frog (Pseudacris maculata) is a widespread species but we know little of its ecology. I examined the nature and existence of competitive mechanisms operating between larvae of the boreal chorus frog and wood frog (Lithobates sylvaticus) from field, mesocosm and laboratory venues spanning nutrient concentrations. I assessed larval performance and diet of tadpoles at natural ponds by measuring tadpole growth and size at metamorphosis, and stable isotope ratios for carbon and nitrogen in tadpole tissue to examine if patterns were consistent with the operation of interspecific co

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20

Stewart, Kathryn. "Contact zone dynamics and the evolution of reproductive isolation in a North American treefrog, the spring peeper (Pseudacris crucifer)." Thesis, 2013. http://hdl.handle.net/1974/7841.

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Despite over seven decades of speciation research and 25 years of phylogeographic studies, a comprehensive understanding of mechanisms that generate biological species remains elusive. In temperate zones, the pervasiveness of range fragmentation and subsequent range expansions suggests that secondary contact between diverging lineages may be important in the evolution of species. Thus, such contact zones provide compelling opportunities to investigate evolutionary processes, particularly the roles of geographical isolation in initiating, and indirect selection against hybrids in completing (re

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21

Rondeau, Sylvie L. "Variables determining buoyancy in juvenile mink frogs, Rana septentrionalis, with comparisons to boreal chorus frogs, Pseudacris triseriata maculata, and wood frogs, Rana sylvatica." 1999. http://hdl.handle.net/1993/2265.

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Aquatic organisms must optimize buoyancy to minimize energy expenditure in locomotion and in holding position. This study examined the hydrostatic role of lungs in the buoyancy regulation of larval 'Rana septentrionalis' in relation to its mode of life. Wet weights in air and water, gas volume, gas-free volume and dry weight were determined in various larval stages. A newly-defined, dimensionless buoyancy index was then calculated in terms of the animal's gas-free specific gravity and gaseous lift factor (ratio of included gas volume to gas-free volume). Field and laboratory observations sho

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22

Green, Jemma. "Evaluating the conservation potential of urban and rural ecosystems for aquatic-breeding amphibians: a case study of two native frogs in southwestern British Columbia." Thesis, 2018. https://dspace.library.uvic.ca//handle/1828/10091.

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The conservation of aquatic-breeding amphibian populations and their habitats is increasingly challenged by urban and rural development, which is occurring more intensively and more rapidly than ever before. Some species are now impacted by development throughout their range. This has forced a re-evaluation of the potential of developed landscapes for providing habitat and contributing to regional conservation strategies. For many amphibians, little is known about the criteria necessary for persistence in a developed landscape. Considerable variation in the physiology, habitat requirements, an

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