Terrestrial activity and summer home range of the mole salamander (Ambystoma talpoideum)

  • Semlitsch R
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Abstract

The terrestrial activity and summer home range of Ambystoma talpoideum is described in two populations in South Carolina. Emigration of adults from breeding sites occurred from March through May during 1979 and 1980. Adults spent 237–354 days in terrestrial habitats before returning to breeding sites during autumn and early winter. Females spent significantly more time in terrestrial habitats than males. Movement of A. talpoideum into and out of the breeding sites around the perimeter of the Carolina bays was nonrandom. Salamanders used corridors of dense vegetation more frequently than open, grassy shoreline areas. Emigration of individual adults to summer home ranges occurred within several nights and summer home ranges were established 81–261 m from the edge of the bays. Juveniles emigrated significantly shorter distances (12–67 m) than adults. Summer home ranges comprised several focal points of activity or "activity centers." The area of each activity center was relatively constant among individuals ..., On trouvera ici une description de l'activité terrestre et de l'étendue de l'aire vitale en été chez deux populations d'Ambystoma talpoideum de Caroline du Sud. En 1979 et 1980, les adultes ont quitté les sites de reproduction de mars à la fin de mai. Les adultes ont passé 237–354 jours dans les habitats terrestres avant de retourner aux sites de reproduction à l'automne et au début de l'hiver. Les femelles semblent passer significativement plus de temps que les mâles dans les habitats terrestres. Les mouvements d'A. talpoideum en direction des sites de reproduction et en direction opposée le long du périmètre des baies de Caroline ne sont pas aléatoires. Les salamandres utilisent les corridors de végétation dense plus souvent que les régions ouvertes, herbeuses, du rivage. L'émigration des adultes vers les aires vitales d'été s'étend sur plusieurs nuits et les aires sont établies à 81–261 m du bord des baies. Les salamandres immatures migrent significativement plus près des rives (12–67 m) que les adulte...

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Authors

  • Raymond D. Semlitsch

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