McCoy Karen D
Department of Biology, Queen's University, Kingston, Ontario, Canada.
Trends Parasitol. 2003 Sep;19(9):400-4. doi: 10.1016/s1471-4922(03)00194-6.
Parasites account for a large part of known species diversity and are considered to have a high potential for sympatric speciation. However, the frequency of sympatric divergence in these organisms will depend on the definition of sympatry that one uses. Like many of our current species concepts, the typical definition of sympatry is not widely applicable to parasites. Revisiting the historically defined conditions for sympatric speciation and considering the situations in which we might regard parasites as being sympatric leads us to question the classic prediction that parasites have a greater tendency to speciate in sympatry than do free-living organisms.
寄生虫占已知物种多样性的很大一部分，并且被认为具有很高的同域物种形成潜力。然而，这些生物中同域分化的频率将取决于所使用的同域定义。与我们当前的许多物种概念一样，同域的典型定义并不广泛适用于寄生虫。重新审视历史上定义的同域物种形成条件，并考虑我们可能将寄生虫视为同域的情况，这使我们质疑经典预测，即寄生虫比自由生活的生物更倾向于在同域中发生物种形成。
