Variation in deer mice from different elevations
| dc.contributor.author | Spencer, Albert William, author | |
| dc.contributor.author | Pettus, David,1925-2014, advisor | |
| dc.contributor.author | Stonaker, Howard H., committee member | |
| dc.contributor.author | Lechleitner, Robert R., committee member | |
| dc.date.accessioned | 2021-12-07T02:44:04Z | |
| dc.date.available | 2021-12-07T02:44:04Z | |
| dc.date.issued | 1961 | |
| dc.description | Covers not scanned. | |
| dc.description | Print version deaccessioned 2021. | |
| dc.description.abstract | Geographical variation in populations of Pero-myscus maniculatus from north-central Colorado was studied during the years 1957-1958. A total of seven hundred twenty-eight mice was collected from seven sites at elevations from 5,000 feet to 11,500 feet. The sites represented several diverse habitat types. Variation among populations in lengths of the condyle-premaxillar distance, condyle-zygomatic distance, nasal, femur, maxillary tooth row, mandible, and width of the skull at the bullae was insignificant. The reflectance of the pelage, as measured by photoelectric reflectometer, was greater for plains specimens than for mountain specimens. It was observed that the color of the pencillation of the tail varied from brown to black. The intensity of the color in the pencillation was related to the general darkness of the pelage. Brown tails occurred more frequently in plains mice while black tails predominated in mice from high elevations. The darkness of pelages increased with elevations and was correlated with the darkness of the soil, although not strongly so. The differences in coat color among populations may have resulted through selection by predators. It was noted also that litters tended to be larger in female mice from the highest localities. The average litter at 5,000 feet elevation was 4.0 embryos; at 6,000 feet it was 4.6 and at 8,000 to 10,000 feet it was 5.0. The causative factors behind variation in the number of young produced per litter are not known. In the course of obtaining the specimens, observations were made of the patterns of distribution of Peromyscus maniculatus through the environment. At all sites, the mice were found most abundantly in a limited portion of the habitat. The distribution of mice, as a result, is dendritic or discontinuous, which may have had important effects in evolution of differences among populations. | |
| dc.format.medium | masters theses | |
| dc.identifier.uri | https://hdl.handle.net/10217/234095 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation | MMS ID: 991002394379703361 | |
| dc.relation | QL737.R6 S7 | |
| dc.relation.ispartof | 1950-1979 | |
| dc.relation.isreferencedby | Meiman, James R. Little South Poudre Watershed and Pingree Park Campus. Colorado State University, College of Forestry and Natural Resources (1971). http://hdl.handle.net/10217/70382 | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.subject | Mice | |
| dc.subject | Variation (Biology) | |
| dc.title | Variation in deer mice from different elevations | |
| dc.type | Text | |
| dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). | |
| thesis.degree.discipline | Zoology | |
| thesis.degree.grantor | Colorado State University | |
| thesis.degree.level | Masters | |
| thesis.degree.name | Master of Science (M.S.) |
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