Host associations and evolutionary relationships of avian blood parasites from West Africa.
Host associations and evolutionary relationships of avian blood parasites from West Africa.
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DOI：
10.1016/j.ijpara.2008.06.005
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发表时间：
2009-01
影响因子：
4
通讯作者：
Fleischer RC
中科院分区：
文献类型：
--
作者：
Beadell JS;Covas R;Gebhard C;Ishtiaq F;Melo M;Schmidt BK;Perkins SL;Graves GR;Fleischer RC
从对喀麦隆和加蓬527只鸟类的调查中发现的血液寄生虫的宿主特异性在进化框架内的几个水平上进行了检查。平均从1.3个寄主种（最多3个）和1.2个寄主科（最多3个）中恢复了血红杆菌的独特线粒体谱系，平均从2.5个寄主种（最多27个）和1.6个寄主科（最多9个）中恢复了疟原虫的线粒体谱系。在属内平均，疟原虫和嗜血杆菌的谱系相对于随机预期在宿主分布上受到限制。然而，尽管两个属中的几个单独的谱系表现出明显的宿主约束，但宿主宽度在相关谱系中差异很大，特别是在疟原虫属中。在最近的进化史上，一些疟原虫谱系表现出极端的多向寄主寄生策略，而其他谱系似乎仅限于某些寄主家族。从有限的疟原虫样本中恢复的两个核基因序列数据表明，在本研究的分辨率下，关于宿主宽度的推断不太可能受到使用寄生虫线粒体谱系作为生物物种代理的严重影响。在密切相关的寄生虫谱系中使用不同的寄主-寄生策略表明寄主范围是一个相对不稳定的特征。由于宿主特异性也可能影响寄生虫的毒力，因此这些结果表明，应在谱系特异性的基础上考虑血虫对禽类宿主的影响。
The host specificity of blood parasites recovered from a survey of 527 birds in Cameroon and Gabon was examined at several levels within an evolutionary framework. Unique mitochondrial lineages of Haemoproteus were recovered from an average of 1.3 host species (maximum = 3) and 1.2 host families (maximum = 3) while lineages of Plasmodium were recovered from an average of 2.5 species (maximum = 27) and 1.6 families (maximum = 9). Averaged within genera, lineages of both Plasmodium and Haemoproteus were constrained in their host distribution relative to random expectations. However, while several individual lineages within both genera exhibited significant host constraint, host breadth varied widely among related lineages, particularly within the genus Plasmodium. Several lineages of Plasmodium exhibited extreme generalist host-parasitism strategies while other lineages appeared to have been constrained to certain host families over recent evolutionary history. Sequence data from two nuclear genes recovered from a limited sample of Plasmodium parasites indicated that, at the resolution of this study, inferences regarding host breadth were unlikely to be grossly affected by the use of parasite mitochondrial lineages as a proxy for biological species. The use of divergent host-parasitism strategies among closely related parasite lineages suggests that host range is a relatively labile character. Since host specificity may also influence parasite virulence, these results argue for considering the impact of haematozoa on avian hosts on a lineage-specific basis.
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DOI：
10.1098/rstb.1994.0149
发表时间：
1994-11-29
影响因子：
6.3
作者：
GUSTAFSSON, L;NORDLING, D;QVARNSTROM, A
通讯作者：
QVARNSTROM, A
影响因子：
56.9
作者：
Joy, DA;Feng, XR;Su, XZ
通讯作者：
Su, XZ
DOI：
10.1098/rspb.2006.3671
发表时间：
2006-12-07
影响因子：
4.7
作者：
Beadell, Jon S.;Ishtiaq, Farah;Fleischer, Robert C.
通讯作者：
Fleischer, Robert C.
DOI：
10.1098/rspb.2005.3313
发表时间：
2006-03-07
影响因子：
4.7
作者：
Ishtiaq, F;Beadell, JS;Fleischer, RC
通讯作者：
Fleischer, RC
影响因子：
1.3
作者：
Kimura, Mari;Dhondt, Andre A.;Lovette, Irby J.
通讯作者：
Lovette, Irby J.