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The effect of the pituitary on xanthophores, iridophores, and pteridines of salamandersWadell, Sandra Jean, 1938- January 1967 (has links)
No description available.
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Distribution, abundance, microhabitat use and interspecific relationships among terrestrial salamanders on Vancouver Island, British ColumbiaDavis, T. M. 27 May 2015 (has links)
Graduate
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The origin and development of the gastric glands of Desmognathus, Amblystoma and pigRoss, Mary Jane, January 1900 (has links)
Thesis (Ph. D.)--Cornell University, 1902. / Cover title. "Reprinted from the Biological Bulletin, vol. IV, no. 2, December 1902."
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Regulation of vitellogenin and other serum proteins by estrogen and xenobiotic estrogens in salamandersNespoli, Lisa Marie. January 2003 (has links)
Thesis (M.S.)--Duquesne University, 2003. / Title from document title page. Abstract included in electronic submission form. Includes bibliographical references (p. 99-109) and abstract.
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The skeletal anatomy of several species of salamanders with special reference to Bolitoglossa rufescens (Cope)Hansen, Afton M. 01 August 1953 (has links)
This paper deals with the complete skeletal anatomy ot Bolitoglossa rufescena (Cope). All parts are figured and described. In addition to this many of the main skeletal parts of Bolitoglossa platydactyla (Cuvier) Bolitoglossa occidentalis Taylor, and Bolitoglossa flaviventris (Schmidt) are described and figured. A comparison of the following parts of the above mentioned salamanders is presented: skull, atlas, ninth trunk vertebra, sixth caudal vertebra, carpals, tarsals and digits. The similarities and differences are pointed out as they appeared to the author. The relationship and specialization ot these species is discussed rather briefly.
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Courtship behaviors in the salamander genus AneidesSapp, Jerod Rothwell 27 August 2002 (has links)
Salamander courtship coordinates the exchange of gametes. Plethodontids
have evolved an elaborate means by which this is done. Throughout the family
Plethodontidae a tail-straddling walk is performed to orchestrate the transfer of sperm.
Typically this behavior is linear, however in the genus Aneides there are exceptions.
In the genus Aneides there are two species that have a circular tail-straddling
walk; others perform the highly conserved linear tail-straddling walk. I observed
courtship in three species of Aneides and used accounts of others to discern which
members possessed circular tail-straddling walk and used a phylogeny to map the
courtship characters found in the courtships of the members of the tribe plethodontini. / Graduation date: 2003
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Chemical cues and the molecular basis of olfactory chemoreception in caudate amphibians /Kiemnec, Karen M. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 124-140). Also available on the World Wide Web.
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Rhythmic activity patterns in European urodele amphibiansGriffiths, Richard Alun January 1983 (has links)
No description available.
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Chemical signaling and pheromone evolution in plethodontid salamandersPalmer, Catherine Anne 28 May 2004 (has links)
My dissertation focuses on the evolutionary forces that have shaped the chemical
signaling system of plethodontid salamanders. Pheromones mediate two phases of
plethodontid reproduction: mate attraction prior to courtship and female persuasion
during courtship. Substrate-borne chemical signals are believed to play an important
role in mate attraction for these animals. A behavioral assay of sex- and species-specific
odor preferences in closely related species of Plethodon indicates that: (1)
there is asymmetry on the receiver side of the system, wherein male salamanders
invest more energy searching for mating partners than do females; (2) substrate-borne
chemical signals are sexually dimorphic and male preference strongly favors the
female odor versus the male odor; (3) females of allopatric salamander species have
evolved distinctive chemical cues; and (4) female chemical signals of sympatric
species are divergent and may play a role in sexual isolation.
Sexual persuasion is another phase of plethodontid reproduction that is
mediated by chemical signals. Plethodontid Receptivity Factor (PRF) is a
proteinaceous pheromone that is produced by the male and delivered to the female
during courtship. Female receptivity increases following application of this
pheromone. PRF is a recent innovation of the male courtship signal, originating in
eastern Plethodon (~27 MYA). Codon-substitution models indicate that several amino
acid sites along the PRF protein have experienced positive selection. Structural
modeling suggests that many of these selected residues are important for receptor
binding. Adaptive change in this pheromone is likely driven via a coevolutionary
association with female receptors.
The male plethodontid courtship signal, however, is comprised of multiple
chemical components. I investigate micro- and macro-evolutionary divergence in
plethodontid chemical communication by surveying two additional pheromone
component genes, PMF and SPL. Like PRF, regions of the PMF and SPL genes have
experienced adaptive change. At least one of these components (SPL) has been
retained in the signaling system for ~100 MY. However, significant differences in the
composition of the courtship pheromone are evident in some plethodontid lineages. It
appears as if at least two lineages (Desmognathus and eastern Plethodon) use different
major pheromone components and yet achieve the same behavioral response in the
female (increased receptivity). / Graduation date: 2005
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Post-metamorphic development of the skeleton of the dusky salamanderWeitze, Charles Earl 03 June 2011 (has links)
Ball State University LibrariesLibrary services and resources for knowledge buildingMasters ThesesThere is no abstract available for this thesis.
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