GEOGRAPHIC SPECIATION IN TROPICAL ECHINOIDS
نویسندگان
چکیده
منابع مشابه
Adaptive speciation: the role of natural selection in mechanisms of geographic and non-geographic speciation.
Recent discussion of mechanism has suggested new approaches to several issues in the philosophy of science, including theory structure, causal explanation, and reductionism. Here, I apply what I take to be the fruits of the 'new mechanical philosophy' to an analysis of a contemporary debate in evolutionary biology about the role of natural selection in speciation. Traditional accounts of that d...
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The high biodiversity in tropical seas provides a long-standing challenge to allopatric speciation models. Physical barriers are few in the ocean and larval dispersal is often extensive, a combination that should reduce opportunities for speciation. Yet coral reefs are among the most species-rich habitats in the world, indicating evolutionary processes beyond conventional allopatry. In a survey...
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The tradition of classifying cases of speciation into discrete geographic categories (allopatric, parapatric and sympatric) fuelled decades of fruitful research and debate. Not surprisingly, as the science has become more sophisticated, this simplistic taxonomy has become increasingly obsolete. Geographic patterns are now reasonably well understood. Sister species are rarely sympatric, implying...
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Erythranthe (Mimulus) filicifolia was recently recognized and formally described as a new species of sect. Simiola from Butte and Plumas counties in north-central California (Sexton et al. 2013; transferred to Erythranthe by Nesom 2013b). Sexton et al. compared the new species to E. laciniata, as both species have a Sierra Nevadan geographic range, generally similar habitats, and dissected leav...
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BACKGROUND The metabolic rate of consumers is a key driver of ecosystem dynamics. On coral reefs, herbivorous echinoids consume fleshy algae, facilitating the growth of reef-building calcified organisms; however, little is known about differences among species in their metabolic and functional ecology. Here, we used log-linear (log-log) regression models to examine the allometric scaling of mas...
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ژورنال
عنوان ژورنال: Evolution
سال: 1954
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1954.tb00104.x