Navigation in breeding-migrating common frogs Rana temporaria: a simple translocation experiment Johan Elmberg', Per Lundberg2 Abstract. The breeding migration of common frogs was studied during one spring. Frogs displaced during migration navigated successfully towards their breeding pond. Solar and visual cues seemed most important to successful navigation. Introduction Orientation is defined as the ability of an animal to know direction, but not its posi- tion. Navigation, on the other hand, includes assessment of both, i.e. an ability to compensate for reasonably long displacements (cf. Emlen, 1975). Homing abilities in amphibians have been reviewed by Schmidt-Koenig (1975) and Able ( 1 980). Several authors have reported solar cues as a mechanism involved in am- phibian orientation (Ferguson and Landreth, 1965; Tracy and Dole, 1969a; Taylor and Ferguson, 1970). Evidence for orientation by olfactory cues in Rana clamitans was presented by Oldham (1967) and in Bufo boreas by Tracy and Dole (1969b). In his review, Able (1980) lists suggestive evidence that also polarized light, stellar configura- tions and the earth's magnetic field may serve as orientational cues in some amphibian species. The ability of navigation, as more or less strongly indicated in displacement tests, has been described in, for example,
Amphibia-Reptilia – Brill
Published: Jan 1, 1988
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