Dispersal in a patchy landscape reveals contrasting determinants of infection in a wild avian malaria system.
Dispersal in a patchy landscape reveals contrasting determinants of infection in a wild avian malaria system.
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在斑驳景观中的传播揭示了野生禽疟疾系统中感染的不同决定因素。
DOI：
10.1111/1365-2656.12154
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Knowles SC
中科院分区：
文献类型：
--
作者：
Knowles SC
准确地了解宿主感染寄生虫的时间、地点和方式，对于了解宿主-寄生虫在自然种群中的共同进化至关重要。然而，对于宿主或寄生虫在其中移动的宿主-寄生虫系统，例如在媒介传播的疾病中，感染的空间位置和寄生虫在连续宿主生活史阶段暴露的相对重要性通常是不确定的。在这里，使用空间参考的蓝山雀种群的6年纵向数据集，我们检验了禽类疟疾寄生虫的感染程度是由出生或繁殖地点经历的条件以及出生后两者之间的传播决定的。我们表明，感染的位置和时间在两个共面的疟疾寄生虫物种之间明显不同。对于一个物种(旋转性疟原虫)，我们的分析表明，感染发生在鸟类在繁殖区域定居后，由于这种寄生虫的分布在多年中具有时间稳定性，出生在疟疾地区的宿主原则上可以改变它们的暴露，并有可能通过出生后的传播避免感染。相反，另一种寄生虫(残存疟原虫)的空间分布是不可预测的，感染概率与出生后扩散距离呈正相关，这可能表明感染发生在这一重大扩散事件中。这些发现表明，该种群中的宿主可能受到来自这两种寄生虫的不同选择压力，可能在不同的生活史阶段发挥作用。因为这意味着对许多共同进化过程的寄生虫物种特异性预测，它们也说明了在多寄生虫系统中预测这种过程的复杂性。
Understanding exactly when, where and how hosts become infected with parasites is critical to understanding host–parasite co‐evolution in natural populations. However, for host–parasite systems in which hosts or parasites are mobile, for example in vector‐borne diseases, the spatial location of infection and the relative importance of parasite exposure at successive host life‐history stages are often uncertain.Here, using a 6‐year longitudinal data set from a spatially referenced population of blue tits, we test the extent to which infection by avian malaria parasites is determined by conditions experienced at natal or breeding sites, as well as by postnatal dispersal between the two.We show that the location and timing of infection differs markedly between two sympatric malaria parasite species. For one species (Plasmodium circumflexum), our analyses indicate that infection occurs after birds have settled on breeding territories, and because the distribution of this parasite is temporally stable across years, hosts born in malarious areas could in principle alter their exposure and potentially avoid infection through postnatal dispersal. Conversely, the spatial distribution of another parasite species (Plasmodium relictum) is unpredictable and infection probability is positively associated with postnatal dispersal distance, potentially indicating that infection occurs during this major dispersal event.These findings suggest that hosts in this population may be subject to divergent selection pressures from these two parasites, potentially acting at different life‐history stages. Because this implies parasite species‐specific predictions for many coevolutionary processes, they also illustrate the complexity of predicting such processes in multi‐parasite systems.
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兄弟山雀（Parus Major、P. caeruleus）的分散距离和方向是否相似？
影响因子：
2.7
作者：
E. Matthysen;T. Casteele;F. Adriaensen
通讯作者：
F. Adriaensen
影响因子：
2.1
作者：
Hellgren, O.;Wood, M. J.;Bensch, S.
通讯作者：
Bensch, S.
DOI：
10.7589/0090-3558-7.1.5
发表时间：
1971
期刊：
Physica D: Nonlinear Phenomena
影响因子：
--
作者：
R. Beaudoin;J. E. Applegate;D. E. Davis;R. Mclean
通讯作者：
R. Mclean
影响因子：
3.3
作者：
Sadd, Ben M.;Schmid-Hempel, Paul
通讯作者：
Schmid-Hempel, Paul
影响因子：
3.3
作者：
Fellous, Simon;Quillery, Elsa;Kaltz, Oliver
通讯作者：
Kaltz, Oliver