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Titolo:
Larval period and metamorphosis of the three-lined salamander, Eurycea guttolineata (Amphibia : Plethodontidae), in the Chattooga River watershed
Autore:
Freeman, SL; Bruce, RC;
Indirizzi:
Western Carolina Univ, Dept Biol, Cullowhee, NC 28723 USA Western CarolinaUniv Cullowhee NC USA 28723 iol, Cullowhee, NC 28723 USA
Titolo Testata:
AMERICAN MIDLAND NATURALIST
fascicolo: 1, volume: 145, anno: 2001,
pagine: 194 - 200
SICI:
0003-0031(200101)145:1<194:LPAMOT>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Freeman, SL Western Carolina Univ, Dept Biol, Cullowhee, NC 28723 USA Western Carolina Univ Cullowhee NC USA 28723 ee, NC 28723 USA
Citazione:
S.L. Freeman e R.C. Bruce, "Larval period and metamorphosis of the three-lined salamander, Eurycea guttolineata (Amphibia : Plethodontidae), in the Chattooga River watershed", AM MIDL NAT, 145(1), 2001, pp. 194-200

Abstract

The larval period of the three-lined salamander was studied over an elevational gradient in the Chattooga River watershed of Georgia, North Carolina and South Carolina. Hatching, in late winter and early spring, occurred earlier at lower elevations of the watershed. Most larvae in populations at lower elevations metamorphosed in the first year, 5-6 mo after hatching, whereas those in higher elevation populations overwintered and metamorphosed early in their second year after a 14-15 mo larval period. Contrary to expectation, we found no definitive evidence that this difference stemmed from variation in first-year larval growth. Moreover, the larval habitats (bogs, pools along sluggish streams) showed no variation in temperature associated with elevation. However, mid to late summer drying occurred in both lower elevation habitats, but not in either higher site. We propose that the observed variation in larval period reflected the norm of reaction of Eurycea guttolineata to the degree of permanency of larval habitats.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:20:06