کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
142848 163158 2009 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ecological explanations for (incomplete) speciation
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Ecological explanations for (incomplete) speciation
چکیده انگلیسی

Divergent natural selection has been shown to promote speciation in many taxa. However, although divergent selection often initiates the process of speciation, it often fails to complete it. Several time-based, geographic and genetic factors have been recognized to explain this variability in how far speciation proceeds. We review here recent evidence indicating that variability in the completeness of speciation can also be associated with the nature of divergent selection itself, with speciation being greatly promoted by (i) stronger selection on a given, single trait (the ‘stronger selection’ hypothesis) and (ii) selection on a greater number of traits (the ‘multifarious selection’ hypothesis). However, evidence for each selective hypothesis is still scarce, and further work is required to determine their relative importance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 24, Issue 3, March 2009, Pages 145–156
نویسندگان
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