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By Pfennig, David William; Pfennig, Karin Susan

Evolutionary biology has lengthy sought to give an explanation for how new qualities and new species come up. Darwin maintained that festival is vital to realizing this biodiversity and held that choice appearing to lessen festival motives opponents to turn into more and more varied, thereby selling new qualities and new species. regardless of Darwin’s emphasis, competition’s position in diversification continues to be arguable and mostly underappreciated.

In their artificial and provocative e-book, evolutionary ecologists David and Karin Pfennig discover competition's function in producing and preserving biodiversity. The authors speak about how choice can decrease source festival or high priced reproductive interactions through selling trait evolution via a technique referred to as personality displacement. They additional describe personality displacement’s underlying genetic and developmental mechanisms. The authors then give some thought to personality displacement’s myriad downstream results, starting from shaping ecological groups to selling new features and new species or even fueling large-scale evolutionary tendencies. Drawing on quite a few stories from normal populations, and written for a vast viewers, Evolution’s Wedge seeks to encourage destiny learn into personality displacement’s many implications for ecology and evolution.

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Additional resources for Evolution's wedge : competition and the origins of diversity

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Because character displacement is central to an explanation of the origins of biodiversity, the study of character displacement can help unify disparate areas of evolutionary biology as well as the fields of evolution and ecology. 2, we list some suggestions for future research. FURTHER RE ADING Brown, W. , and E. O. Wilson. 1956. Character displacement. Systematic Zoology 5:49–64. This is the paper that first brought the concept of character displacement to the attention of many scientists. Darwin, C.

1), are common in many ecological communities (Stachowicz 2001; Bruno et al. 2003). According to this theory, potential competitors may coexist if the fitness benefits of positive interactions compensate for the costs of competition. A recent empirical test of this facilitation hypothesis, however, found a pattern opposite from that predicted by the theory. In particular, Alexandrou and colleagues (2011) evaluated the relative importance of competition versus Müllerian mimicry in determining the local community structure in a species-rich group of Neotropical catfishes that have converged on both an effective predator deterrent—retractable venomous spines—and a similar warning signal—bold color patterns (Müllerian mimics are mutualists that share the mortality costs of predator education concerning their unprofitability as prey; see Ruxton et al.

First, the study of character displacement can illuminate how evolutionary processes acting within species translate into major evolutionary change above the level of species. That is, character displacement can link microevolution and macroevolution. The relationship between microevolution and macroevolution has long been the focus of debate in evolutionary biology (for recent discussions, see Gould [2002] and Carroll [2005]). 2. Suggestions for Future Research . Identify the various agents of selection (other than competition) that can generate patterns that could be mistaken for character displacement.

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