EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland.
EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland; Institute of Integrative Biology, ETH Zürich, Universitätsstrasse 16, 8092 Zürich, Switzerland.
Curr Opin Insect Sci. 2019 Apr;32:8-14. doi: 10.1016/j.cois.2018.08.008. Epub 2018 Sep 1.
Insects commonly possess heritable microbial symbionts that increase their resistance to particular parasites. A diverse community of defensive symbionts may thus provide hosts with effective and specific protection against multiple parasites, although costs might constrain the accumulation of many symbionts. In parallel to the allelic diversity in the MHC complex of the vertebrate immune system, parasite diversity could be the driving force behind symbiont diversity. There is indeed evidence that parasites have the ability to drive frequencies of defensive symbionts in their hosts, and that these symbionts influence parasite communities, but direct evidence that parasite diversity can promote symbiont diversity is still lacking. We provide suggestions to investigate this potential link.
昆虫通常拥有可遗传的微生物共生体，这增加了它们对特定寄生虫的抵抗力。因此，多样化的防御共生体群落可能为宿主提供针对多种寄生虫的有效和特定的保护，尽管成本可能限制了许多共生体的积累。与脊椎动物免疫系统 MHC 复合体中的等位基因多样性平行，寄生虫多样性可能是共生体多样性的驱动力。确实有证据表明，寄生虫有能力驱动宿主中防御共生体的频率，并且这些共生体影响寄生虫群落，但缺乏寄生虫多样性可以促进共生体多样性的直接证据。我们提供了一些建议来研究这种潜在的联系。
