LONG DISTANCE HOMING IN THE NEWT TARICHA RIVULARIS

Open Access
Publisher Website
Google Scholar
Abstract
High percentages of adult male newts, displaced relatively great distances (1 to over 2 1/2 miles) to foreign sites in the same or different streams, have subsequently been recaptured in their native stream segments. The number[long dash] at best small[long dash]accepting the release site increases with the distance of the displacement. The homing excursion is probably completed in most cases before or during the next breeding season, even though actual recaptures in the home segment of stream may be distributed over 3 or more years. This is ascribed to the fact that a considerable percentage of males become sexually active and enter the stream at intervals of more than one year. Most females breed at even longer intervals, to which we attribute the delayed onset and low incidence of homing recaptures in experiments with this sex compared to those with males. Instances in which males have homed after remaining at the release site for as much as 2 full years (in exception to the general rule that the homing migration is undertaken within the first year following displacement) are cited as evidence that "memory" of the home area can persist during long periods of separation from it.

This publication has 3 references indexed in Scilit: