DETECTION BY ALLOZYME ELECTROPHORESIS OF CRYPTIC SPECIES OF HYPODONTUS-MACROPI (NEMATODA, STRONGYLOIDEA) FROM MACROPODID MARSUPIALS
DETECTION BY ALLOZYME ELECTROPHORESIS OF CRYPTIC SPECIES OF HYPODONTUS-MACROPI (NEMATODA, STRONGYLOIDEA) FROM MACROPODID MARSUPIALS
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DOI：
10.1016/s0020-7519(05)80004-9
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发表时间：
1992-05-01
影响因子：
4
通讯作者：
ANDREWS, RH
中科院分区：
文献类型：
--
作者：
CHILTON, NB;BEVERIDGE, I;ANDREWS, RH
使用 24 种酶对来自 8 个不同宿主物种的 98 个 Hypodontus macropi 进行同种酶电泳，揭示了至少 6 个兄弟物种的复合体，类群之间有 15-50% 的固定遗传差异。除寄生Macropus rufus/M 的分类单元外。在粗壮物种中，在每种情况下，在每个地点检查的成对寄生虫类群都是同域的，从而支持了它们代表有效物种的结论。一系列宿主特异性线虫类群的存在解释了先前在 H. macropi 宿主分布中注意到的许多不一致之处。寄生虫同种异型酶表型图与宿主系统发育的比较表明，其中四个物种形成事件可归因于共物种形成，两个可归因于宿主转换。 M. rufus/M. 之间宿主切换的明显案例。发现了Robustus和M.fuliginosus。
Allozyme electrophoresis of 98 Hypodontus macropi from eight different species of hosts using 24 enzymes revealed a complex of at least six sibling species, with 15-50% fixed genetic differences between taxa. Except for the taxon parasitizing Macropus rufus/M. robustus, pairs of parasite taxa were, in each case, sympatric at each locality examined, thus supporting the conclusion that they represent valid species. The existence of a series of host-specific nematode taxa explains many of the inconsistencies noted previously in the host distribution of H. macropi. Comparison of parasite allozyme phenograms with host phylogeny suggests that four of the speciation events could be attributable to cospeciation and two to host switching. A clear case of host switching between M. rufus/M. robustus and M. fuliginosus was found.