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Abstract:

Multiple stress resistance traits were investigated in the cactophilic fly Drosophila buzzatii. Adults from seven populations derived from North-Western Argentina were compared with respect to traits relevant for thermal stress resistance and for resistance to other forms of environmental stress. The populations were collected along an altitudinal gradient spanning more than 2000 m in height, showing large climatic differences. The results suggest that knock-down resistance to heat stress, desiccation resistance and Hsp70 expression at a relatively severe stressful temperature best reflect thermal adaptation in this species. Furthermore, cold resistance seemed to be of less importance than heat resistance, at least for the adult life stage, in these populations. Clinal variation in thermal resistance traits over short geographical distances suggests relatively strong adaptive differentiation of the populations. This study provides the first evidence for altitudinal differentiation in stress-related traits, and suggests that Hsp70 expression level can be related to altitudinal clines of heat-stress resistance. © 2005 European Society for Evolutionary Biology.

Registro:

Documento: Artículo
Título:Altitudinal variation for stress resistance traits and thermal adaptation in adult Drosophila buzzatii from the New World
Autor:Sørensen, J.G.; Norry, F.M.; Scannapieco, A.C.; Loeschcke, V.
Filiación:Department of Ecology and Genetics, Aarhus Centre for Environmental Stress Research (ACES), University of Aarhus, Ny Munkegade, Aarhus C, Denmark
Departamento de Ecología, Genética Y Evolución, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Aarhus Centre for Environmental Stress Research (ACES), Department of Ecology and Genetics, University of Aarhus, Ny Munkegade, DK-8000 Aarhus C, Denmark
Palabras clave:Altitudinal gradient; Desiccation resistance; Heat-shock protein; Knock-down resistance; Starvation resistance; heat shock protein 70; adaptation; altitude; environmental stress; heat shock; stress resistance; adaptation; altitude; analysis of variance; animal; Argentina; climate; comparative study; conference paper; dehydration; Drosophila; metabolism; pathophysiology; physiology; stress; temperature; Adaptation, Physiological; Altitude; Analysis of Variance; Animals; Argentina; Climate; Dehydration; Drosophila; HSP70 Heat-Shock Proteins; Stress; Temperature; Argentina; South America; Western Hemisphere; World; Drosophila buzzatii
Año:2005
Volumen:18
Número:4
Página de inicio:829
Página de fin:837
DOI: http://dx.doi.org/10.1111/j.1420-9101.2004.00876.x
Título revista:Journal of Evolutionary Biology
Título revista abreviado:J. Evol. Biol.
ISSN:1010061X
CODEN:JEBIE
CAS:HSP70 Heat-Shock Proteins
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v18_n4_p829_Sorensen

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Citas:

---------- APA ----------
Sørensen, J.G., Norry, F.M., Scannapieco, A.C. & Loeschcke, V. (2005) . Altitudinal variation for stress resistance traits and thermal adaptation in adult Drosophila buzzatii from the New World. Journal of Evolutionary Biology, 18(4), 829-837.
http://dx.doi.org/10.1111/j.1420-9101.2004.00876.x
---------- CHICAGO ----------
Sørensen, J.G., Norry, F.M., Scannapieco, A.C., Loeschcke, V. "Altitudinal variation for stress resistance traits and thermal adaptation in adult Drosophila buzzatii from the New World" . Journal of Evolutionary Biology 18, no. 4 (2005) : 829-837.
http://dx.doi.org/10.1111/j.1420-9101.2004.00876.x
---------- MLA ----------
Sørensen, J.G., Norry, F.M., Scannapieco, A.C., Loeschcke, V. "Altitudinal variation for stress resistance traits and thermal adaptation in adult Drosophila buzzatii from the New World" . Journal of Evolutionary Biology, vol. 18, no. 4, 2005, pp. 829-837.
http://dx.doi.org/10.1111/j.1420-9101.2004.00876.x
---------- VANCOUVER ----------
Sørensen, J.G., Norry, F.M., Scannapieco, A.C., Loeschcke, V. Altitudinal variation for stress resistance traits and thermal adaptation in adult Drosophila buzzatii from the New World. J. Evol. Biol. 2005;18(4):829-837.
http://dx.doi.org/10.1111/j.1420-9101.2004.00876.x