The Resource Analysis of Eurycea hybrid zone in eastern Missouri, by Bonnie Jean Beasley, (electronic resource)

Analysis of Eurycea hybrid zone in eastern Missouri, by Bonnie Jean Beasley, (electronic resource)

Label
Analysis of Eurycea hybrid zone in eastern Missouri
Title
Analysis of Eurycea hybrid zone in eastern Missouri
Statement of responsibility
by Bonnie Jean Beasley
Creator
Subject
Genre
Language
eng
Summary
"Evolutionary mechanisms are often difficult to observe in action because evolution generally works slowly over time. Hybrid zones provide a unique opportunity to observe many evolutionary processes, such as reinforcement, because of the rapid changes that tend to occur in these zones. Salamanders provide an ideal model for examining the rapid changes in populations that result from hybridization because many closely-related species lack reproductive barriers. In Missouri, a well-documented hybridization zone exists among the two subspecies Eurycea longicauda longicauda (long-tailed salamander) and E. l. melanopleura (dark-sided salamander). These salamanders inhabit caves, limestone creek beds, and abandoned mine shafts. A closely related species, Eurycea lucifuga (red cave salamander) also inhabits caves and mine shafts. A recent study found that E. lucifuga and E. longicauda ssp. were likely hybridizing in the Onondaga Cave system. In this study, samples were collected from three Missouri caves with the E. longicauda ssp. hybrid zone. Morphological analysis demonstrated significant differences in the morphology of each species and genetic analysis presented evidence of potential hybridization among these species. Because of the apparent differing degrees of hybridization occurring among the Eurycea species, this hybrid zone could offer a valuable natural laboratory to investigate the mechanisms of reinforcement"--Abstract, p. iii
Related
Cataloging source
UMR
http://library.link/vocab/creatorDate
1980-
http://library.link/vocab/creatorName
Beasley, Bonnie Jean
Degree
M.S.
Dissertation year
2010.
Granting institution
Missouri University of Science and Technology
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • theses
http://library.link/vocab/subjectName
  • Salamanders
  • Brook salamanders
  • Morphology
  • Hybridization
Target audience
specialized
Label
Analysis of Eurycea hybrid zone in eastern Missouri, by Bonnie Jean Beasley, (electronic resource)
Instantiates
Publication
Note
  • Vita
  • The entire thesis text is included in file
  • Title from title screen of thesis/dissertation PDF file (viewed June 28, 2010)
Bibliography note
Includes bibliographical references (pages 58-62)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
644287104
Dimensions
unknown
Extent
1 online resource (viii, 63 pages)
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, digital, PDF file.
Specific material designation
remote
System control number
(OCoLC)644287104
System details
  • System requirements: Adobe Acrobat Reader; Internet browser
  • Mode of access: World Wide Web
Label
Analysis of Eurycea hybrid zone in eastern Missouri, by Bonnie Jean Beasley, (electronic resource)
Publication
Note
  • Vita
  • The entire thesis text is included in file
  • Title from title screen of thesis/dissertation PDF file (viewed June 28, 2010)
Bibliography note
Includes bibliographical references (pages 58-62)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
644287104
Dimensions
unknown
Extent
1 online resource (viii, 63 pages)
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, digital, PDF file.
Specific material designation
remote
System control number
(OCoLC)644287104
System details
  • System requirements: Adobe Acrobat Reader; Internet browser
  • Mode of access: World Wide Web

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