Effects of inbreeding in three life stages of Drosophila buzzatii after embryos were exposed to a high temperature stress.

作者: Jesper Dahlgaard , Volker Loeschcke

DOI: 10.1038/HDY.1997.64

关键词: Inbreeding depressionGeneticsLife stageAnimal scienceTemperature stressHatchingBiologyGenetic variationEmbryoDrosophila buzzatiiInbreeding

摘要: The interaction between inbreeding and high-temperature stress was examined in the cactophilic fruit fly, Drosophila buzzatii. Embryos of four levels (F = 0, F 0.25, 0.375, 0.5) were either maintained at 25°C throughout egg-to-adult development or exposed to 41.5°C for 110 min an age 20 h. Hatching, larva-to-pupa survival, pupa-to-adult survival estimated. Heat shock reduced hatching rates, but adulthood individuals that hatched unaffected by heat shock. Inbreeding proportion eggs control group only. For there no stress. effect on stronger compared with results imply environmental dependency depression suggest tolerance may not always be inbreeding. thermal microenvironment cactus rots field assessed measuring temperatures inside 17 rots. Internal rot varied a maximum temperature 48°C during day. Selection nature have depleted genetic variation this trait limiting resistance.

参考文章(26)
Ary A. Hoffmann, P. A. Parsons, Evolutionary Genetics and Environmental Stress ,(1991)
T. P. Hauser, C. Damgaard, V. Loeschcke, Effects of inbreeding in small plant populations: Expectations and implications for conservation Birkhäuser, Basel. pp. 115- 129 ,(1994) , 10.1007/978-3-0348-8510-2_11
Robert A. Krebs, Volker Loeschcke, ACCLIMATION AND SELECTION FOR INCREASED RESISTANCE TO THERMAL STRESS IN DROSOPHILA BUZZATII Genetics. ,vol. 142, pp. 471- 479 ,(1996) , 10.1093/GENETICS/142.2.471
Leslie A. Pray, James M. Schwartz, Charles J. Goodnight, Lori Stevens, Environmental Dependency of Inbreeding Depression: Implications for Conservation Biology Conservation Biology. ,vol. 8, pp. 562- 568 ,(1994) , 10.1046/J.1523-1739.1994.08020562.X
N. G. Ehiobu, M. E. Goddard, J. F. Taylor, Effect of rate of inbreeding on inbreeding depression in Drosophila melanogaster. Theoretical and Applied Genetics. ,vol. 77, pp. 123- 127 ,(1989) , 10.1007/BF00292326
P A Parsons, Extreme-environment heterosis and genetic loads. Heredity. ,vol. 26, pp. 479- 483 ,(1971) , 10.1038/HDY.1971.59
J. Langridge, Thermal responses of mutant enzymes and temperature limits to growth. Molecular Genetics and Genomics. ,vol. 103, pp. 116- 126 ,(1968) , 10.1007/BF00427139
Sandra Bergh, Robert Arking, Developmental profile of the heat shock response in early embryos of Drosophila Journal of Experimental Zoology. ,vol. 231, pp. 379- 391 ,(1984) , 10.1002/JEZ.1402310312