|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|142296||163095||2016||12 صفحه PDF||سفارش دهید||دانلود رایگان|
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پایگاه «دانشیاری» آمادگی دارد با همکاری مجموعه «شهر محتوا» با استفاده از این مقاله علمی، برای شما به زبان فارسی، تولید محتوا نماید.
Many biologists are asking whether environmentally initiated phenotypic change (i.e., ‘phenotypic plasticity’) precedes, and even facilitates, evolutionary adaptation. However, this ‘plasticity-first’ hypothesis remains controversial, primarily because comprehensive tests from natural populations are generally lacking. We briefly describe the plasticity-first hypothesis and present much-needed key criteria to allow tests in diverse, natural systems. Furthermore, we offer a framework for how these criteria can be evaluated and discuss examples where the plasticity-first hypothesis has been investigated in natural populations. Our goal is to provide a means by which the role of plasticity in adaptive evolution can be assessed.
TrendsPhenotypic plasticity has long been proposed to precede and possibly facilitate adaptive evolution.This ‘plasticity-first hypothesis’ is controversial because skeptics argue that it lacks compelling evidence from natural populations.A chief difficulty with demonstrating plasticity-first evolution in natural populations is that, once a trait has evolved, its evolution cannot be studied in situ. To get around this difficulty, researchers can study extant lineages that act as ancestral-proxies to the lineage possessing the focal trait.Using such an approach, key criteria of the plasticity-first hypothesis can be evaluated using a relatively simple experimental design.Applying these criteria to various systems, the plasticity-first hypothesis has some empirical support. However, more studies are needed to conclusively determine the role of plasticity in adaptive evolution.
Journal: - Volume 31, Issue 7, July 2016, Pages 563–574