Reproductive Parasitism: Maternally Inherited Symbionts in a Biparental World
Open Access
- 1 May 2015
- journal article
- review article
- Published by Cold Spring Harbor Laboratory in Cold Spring Harbor Perspectives in Biology
- Vol. 7 (5), a017699
- https://doi.org/10.1101/cshperspect.a017699
Abstract
Most species of insect, and many other plants and animals, carry maternally heritable microorganisms—viruses, bacteria, unicellular eukaryotes, and fungi that pass from a female host to her progeny. Maternal inheritance establishes a correlation between the fitness of symbiont and host female, which can select for the symbiont to contribute to host fitness. Nevertheless, its lack of transmission through male hosts places the symbiont in conflict with biparentally inherited nuclear genes. In this review, we first examine how this conflict is manifest in selection to promote the production and survival of infected female hosts and gametes. We then examine how the distorted population sex ratios that they produce may affect host reproductive ecology, and thus the intensity of other conflicts associated with sexual reproduction. Finally, we examine evolved host responses to symbiont manipulation. We argue that the unusual intensity of symbiont–host conflict generates extreme selection pressures that can drive changes in sex-determination systems, the basic pathway through which males and females are constructed.Keywords
This publication has 94 references indexed in Scilit:
- A male-killing Wolbachia carries a feminizing factor and is associated with degradation of the sex-determining system of its hostBiology Letters, 2012
- The genetics and evolution of obligate reproductive parasitism in Trichogramma pretiosum infected with parthenogenesis-inducing WolbachiaHeredity, 2010
- Reproductive compensation favours male-killingWolbachiain a live-bearing hostProceedings. Biological sciences, 2009
- Unravelling theWolbachiaevolutionary role: the reprogramming of the host genomic imprintingProceedings. Biological sciences, 2009
- A Bacterium Targets Maternally Inherited Centrosomes to Kill Males in NasoniaCurrent Biology, 2008
- A new cytogenetic mechanism for bacterial endosymbiont-induced parthenogenesis in HymenopteraProceedings. Biological sciences, 2008
- YOU CAN'T KEEP A GOOD PARASITE DOWN: EVOLUTION OF A MALE-KILLER SUPPRESSOR UNCOVERS CYTOPLASMIC INCOMPATIBILITYEvolution, 2008
- Novel RNA sequences associated with late male killing inHomona magnanimaProceedings. Biological sciences, 2008
- Population dynamics of defensive symbionts in aphidsProceedings. Biological sciences, 2007
- Strategic sperm allocation under parasitic sex-ratio distortionBiology Letters, 2005