作者: Jesper Dahlgaard , Volker Loeschcke
DOI: 10.1038/HDY.1997.64
关键词: Inbreeding depression 、 Genetics 、 Life stage 、 Animal science 、 Temperature stress 、 Hatching 、 Biology 、 Genetic variation 、 Embryo 、 Drosophila buzzatii 、 Inbreeding
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.