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Description
Title: | Social Organization, Natal Dispersal, Survival, and Cause -Specific Mortality of Red Foxes in Agricultural and Urban Areas of East-Central Illinois |
Author(s): | Gosselink, Todd Eric |
Doctoral Committee Chair(s): | Warner, Richard E. |
Department / Program: | Natural Resrouces and Environmental Sciences |
Discipline: | Natural Resrouces and Environmental Sciences |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | Ph.D. |
Genre: | Dissertation |
Subject(s): | Agriculture, Forestry and Wildlife |
Abstract: | Survival was influenced the most by environmental and body condition. Adult foxes with low (0--20%) and high (80--100%) row-crop percentages, and higher capture weights experienced higher survival. Juveniles from larger litters, low capture body fat, and fewer dispersal days had higher survival. Adult survival (0.35) was higher than juvenile survival (0.24). Yearly urban survival varied due to cyclic outbreaks of sarcoptic mange, resulting in survival ranging from 0.10 (mange prevalent) to 0.83 (no mange) indifferent years. Mange was the major source of urban fox mortality, followed by road kill. Road kill and coyote predation mortalities were major sources for rural foxes. Urban areas may provide refugia for red foxes in North America where reestablished coyote populations persist at high densities. |
Issue Date: | 2002 |
Type: | Text |
Language: | English |
Description: | 111 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002. |
URI: | http://hdl.handle.net/2142/83086 |
Other Identifier(s): | (MiAaPQ)AAI3069998 |
Date Available in IDEALS: | 2015-09-25 |
Date Deposited: | 2002 |
This item appears in the following Collection(s)
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Dissertations and Theses - Natural Resources and Environmental Sciences
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Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois