Bacteria-diet interactions affect longevity in the medfly - Ceratitis capitata
Bacteria-diet interactions affect longevity in the medfly - Ceratitis capitata
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DOI：
10.1111/j.1439-0418.2008.01330.x
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发表时间：
2008-12-01
影响因子：
1.9
通讯作者：
Yuval, B.
中科院分区：
文献类型：
--
作者：
Ben-Yosef, M.;Behar, A.;Yuval, B.
地中海果蝇(Certis Capitata Wiedemann，Dipt.：Tephritidae)在其消化系统中有各种各样的细菌群落。这种微生物区系可能对果蝇的健康有重要影响。最近，我们描述了清除肠道细菌对头状毛囊线虫雄性和雌性生殖成功的影响。在这里，我们通过研究细菌对雄性和雌性寿命的影响来扩展对苍蝇-细菌相互作用的本质的看法。抗生素被用来抑制肠道细菌群落，并比较了在营养压力(维持在糖分上)或提供充分饮食的情况下，抗生素治疗的果蝇和未治疗的果蝇的死亡率。这些测试表明，消除肠道细菌群可以延长寿命，但只有在果蝇受到营养压力的情况下才能延长寿命，这表明细菌对寿命的影响取决于饮食。考虑到细菌对苍蝇健康成分的其他已知影响，考虑到这些结果，证明了头状毛虫和其肠道微生物群之间的成本-效益关系。
Mediterranean fruit flies (Ceratitis capitata Wiedemann, Dipt.: Tephritidae) harbour a diverse community of bacteria in their digestive system. This microbiota may have important functions impacting on the fly's fitness. Recently, we described the effect of eliminating intestinal bacteria on the reproductive success of C. capitata males and females. Here, we expand the view on the nature of fly-bacteria interactions by examining the effect of bacteria on male and female longevity. Antibiotics were used to suppress the gut bacterial community and mortality rates were compared between antibiotic-treated and non-treated flies when either nutritionally stressed (maintained on sugar) or provided with a full diet. These tests revealed that eliminating the gut bacterial population prolonged longevity, but only when flies were nutritionally stressed, indicating that the effect of bacteria on lifespan was diet dependent. Considering these results in light of other known effects of bacteria on fitness components of the fly demonstrates a cost-benefit relationship between C. capitata and its gut microbiota.