Seasonal variation in dietary preferences of the montane vole, Microtus montanus
Authors(s): A. Pinter, P. Berger and N. Negus
Publication:
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Publication Date: 0000-00-00
Type: annual report
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Abstract: Objectives 1.To determine seasonal preferences of M. montanus in relation to the age, cohorts and sex of the animals and the availability of plant species. 2. To identify the plant species that constitute the diet of M. montanus. Findings and Status During the spring and summer over 90% of the diet is composed of about 9-10 species of grasses and sedges. Somewhere between October and December a dramatic shift takes place to approximately 70% dicotyledons in the diet. Juvenile animals are far less discriminating than the adults in their selection of plant species. Apparently some degree of experience is necessary before the animals maximize their foraging efficiency from an energetic standpoint.
Keywords: habitat, population, mortality, Grand Teton National Park, animal, mammal, rodent, vole, Muridae, Cricetidae, montane vole, Microtus montanus
| BIBLIOGRAPHY ID | 169 |
| REF TYPE | Report |
| AUTHORS | A. Pinter, P. Berger and N. Negus |
| PUB DATE | 0000-00-00 |
| DATE STR | 0000-00-00 |
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| DOC TITLE | Seasonal variation in dietary preferences of the montane vole, Microtus montanus |
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| ACADEMIC DEPT | |
| UNIVERSITY | |
| DOC TYPE | annual report |
| PUB VOLUME | 4174 |
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| KEYWORDS | habitat, population, mortality, Grand Teton National Park, animal, mammal, rodent, vole, Muridae, Cricetidae, montane vole, Microtus montanus |
| ABSTRACT | Objectives
1.To determine seasonal preferences of M. montanus in relation to the age, cohorts and sex of the animals and the availability of plant species.
2. To identify the plant species that constitute the diet of M. montanus.
Findings and Status
During the spring and summer over 90% of the diet is composed of about 9-10 species of grasses and sedges. Somewhere between October and December a dramatic shift takes place to approximately 70% dicotyledons in the diet. Juvenile animals are far less discriminating than the adults in their selection of plant species. Apparently some degree of experience is necessary before the animals maximize their foraging efficiency from an energetic standpoint. |
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| URLADDRESS | http://science.nature.nps.gov/servlet/Prmt_ReportSearchView?REPORT_ID=4174 |
| COPYRIGHT | |
Posted on
Sun, July 31, 2011
by Beringia South