Symbiont survival and host-symbiont disequilibria under differential vertical transmission.
Symbiont survival and host-symbiont disequilibria under differential vertical transmission.
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差异垂直传播下的共生体存活和宿主-共生体不平衡。
DOI:
10.1093/genetics/154.3.1347
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发表时间:
2000
期刊:
影响因子:
3.3
通讯作者:
Asmussen,MA
中科院分区:
文献类型:
--
作者:
Sánchez,MS;Arnold,J;Asmussen,MA
Interspecific genetic interactions in host-symbiont systems raise intriguing coevolutionary questions and may influence the effectiveness of public health and management policies. Here we present an analytical and numerical investigation of the effects of host genetic heterogeneity in the rate of vertical transmission of a symbiont. We consider the baseline case with a monomorphic symbiont and a single diallelic locus in its diploid host, where vertical transmission is the sole force. Our analysis introduces interspecific disequilibria to quantify nonrandom associations between host genotypes and alleles and symbiont presence/absence. The transient and equilibrium behavior is examined in simulations with randomly generated initial conditions and transmission parameters. Compared to the case where vertical transmission rates are uniform across host genotypes, differential transmission (i) increases average symbiont survival from 50% to almost 60%, (ii) dramatically reduces the minimum average transmission rate for symbiont survival from 0.5 to 0.008, and (iii) readily creates permanent host-symbiont disequilibria de novo, whereas uniform transmission can neither create nor maintain such associations. On average, heterozygotes are slightly more likely to carry and maintain the symbiont in the population and are more randomly associated with the symbiont. Results show that simple evolutionary forces can create substantial nonrandom associations between two species.
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影响因子:
10.7
作者:
Marta L. Wayne;D. Contamine;M. Kreitman
通讯作者:
Marta L. Wayne;D. Contamine;M. Kreitman
DOI:
--
发表时间:
1982
期刊:
Cytobios
影响因子:
--
作者:
W. Reisser;A. Radunz;W. Wiessner
通讯作者:
W. Wiessner
影响因子:
3.3
作者:
A. Schnabel;M. Asmussen
通讯作者:
M. Asmussen
DOI:
--
发表时间:
1984
期刊:
Evolution; international journal of organic evolution
影响因子:
--
作者:
W. Rice
通讯作者:
W. Rice
影响因子:
2.2
作者:
Douglas, AE
通讯作者:
Douglas, AE