Abstract
Non-random migration by post-breeding ambystomatid salamanders indicates probable preference for a particular route or corridor of movement (Shoop, 1965; Shoop and Doty, 1972; Douglas and Monroe, 1981). We found that members of an Ambystoma maculatum population in northern Michigan migrated from a breeding pond in a distinct bimodal pattern in 1977 and 1978 suggesting similar corridor preference. Included in this report are data on home range and daily movement of A. maculatum following post-breeding migration. The 0.12 ha breeding pond is in the Cyrus H. McCormick Experimental Forest, Marquette County, Michigan in mixed northern hardwoods (sugar maple, Acer saccharum; yellow birch, Betula alleghaniensis; white pine, Pinus strobus; balsam fir, Abies balsamea). A screenwire drift fence (30 cm high, 0.8 cm mesh) enclosed the pond and pitfall traps (15 cm deep X 15 cm diameter) were located on both sides of the fence at 3-5 m intervals.
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