BIOL 3170 Study Guide - Final Guide: Snowshoe Hare, Roe Deer, Red Grouse
29 Mar 2014
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Non-lethal: means that it does not cause death. Roe deer (common in europe) are caused to die due to predation by the red foxes especially the young. Small body size makes the young vulnerable to red foxes. Mothers hide their fawns (young) visiting them 3-7 times a day to feed them. Mothers however do not stay with the young. Method of study: 14 years and 216 fawns were radio collared to maintain their survival and cause of death. Results: less vulnerability as the young grows older shown by the graph. Predation rate was 42% when the deer were young due to predation by the fox. About the case 2 (fraiser & gilliam 1992) Guppies (poecilia) & killifishor jumping guabine (rivulus) both live in a forest streams on the hillsides. Their pop is broken into subpop and they occupy different pools separated by riffles.
