A morphometric analysis of populations of yellow-eyed junco (Junco phaeonotus) in southeastern Arizona

Persistent Link:
http://hdl.handle.net/10150/278166
Title:
A morphometric analysis of populations of yellow-eyed junco (Junco phaeonotus) in southeastern Arizona
Author:
White, Jeffrey Lloyd, 1952-
Issue Date:
1992
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
I sampled populations of Yellow-eyed Junco from six mountain ranges in southeastern Arizona to test hypotheses about morphological variation in the species. Morphometric variables were obtained from measurements in the field, and from photographic images of the head, wing, and tail. Statistical analyses revealed significant seasonal differences in values of bill-length variables, and sexual dimorphism in wing and tail characters, but not in bill characters. Statistically significant geographic discrimination among samples was found only for bill characters. Mahalanobis' distance values from subsets of bill and tailspot variables correlate most significantly with geographic distances between habitats measured along an arc of higher elevation in the region. These correlations, the lack of significant geographic discrimination for wing and tail characters, and the many extralimital records for the species imply that Yellow-eyed Juncos move between isolated populations, and that this movement tends to follow higher elevations in the region.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Biology, Biostatistics.; Biology, Ecology.; Biology, Zoology.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Strauss, Richard E.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleA morphometric analysis of populations of yellow-eyed junco (Junco phaeonotus) in southeastern Arizonaen_US
dc.creatorWhite, Jeffrey Lloyd, 1952-en_US
dc.contributor.authorWhite, Jeffrey Lloyd, 1952-en_US
dc.date.issued1992en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractI sampled populations of Yellow-eyed Junco from six mountain ranges in southeastern Arizona to test hypotheses about morphological variation in the species. Morphometric variables were obtained from measurements in the field, and from photographic images of the head, wing, and tail. Statistical analyses revealed significant seasonal differences in values of bill-length variables, and sexual dimorphism in wing and tail characters, but not in bill characters. Statistically significant geographic discrimination among samples was found only for bill characters. Mahalanobis' distance values from subsets of bill and tailspot variables correlate most significantly with geographic distances between habitats measured along an arc of higher elevation in the region. These correlations, the lack of significant geographic discrimination for wing and tail characters, and the many extralimital records for the species imply that Yellow-eyed Juncos move between isolated populations, and that this movement tends to follow higher elevations in the region.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectBiology, Biostatistics.en_US
dc.subjectBiology, Ecology.en_US
dc.subjectBiology, Zoology.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorStrauss, Richard E.en_US
dc.identifier.proquest1349139en_US
dc.identifier.bibrecord.b27656810en_US
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