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The Great American Schism: Divergence of Marine Organisms After the Rise of the Central American Isthmus
TLDR
After a 12-million-year process, the Central American Isthmus was completed 2.8 My ago and launched marine organisms of the two oceans into independent evolutionary trajectories and those that did not go extinct have diverged.
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Evolution and the latitudinal diversity gradient: speciation, extinction and biogeography.
TLDR
Two major hypotheses for the origin of the latitudinal diversity gradient are reviewed, including the time and area hypothesis and the diversification rate hypothesis, which hold that tropical regions diversify faster due to higher rates of speciation, or due to lower extinction rates.
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MASS MORTALITY OF DIADEMA ANTILLARUM IN THE CARIBBEAN: What Have We Learned?
Description de la mortalite catastrophique de D. antillarum et essai de generalisation sur la connaissance acquise a partir de l'etude de ce phenomene
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POPULATION STRUCTURE AND SPECIATION IN TROPICAL SEAS: GLOBAL PHYLOGEOGRAPHY OF THE SEA URCHIN DIADEMA
TLDR
The phylogeny of the pantropical and subtropical sea urchin genus Diadema is reconstructed, using sequences of mitochondrial DNA from 482 individuals collected around the world, to determine the efficacy of barriers to gene flow and to ascertain the history of possible dispersal and vicariance events that led to speciation.
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Formation of the Isthmus of Panama
TLDR
An exhaustive review and reanalysis of geological, paleontological, and molecular records converge upon a cohesive narrative of gradually emerging land and constricting seaways, with formation of the Isthmus of Panama sensu stricto around 2.8 Ma.
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Dispersal barriers in tropical oceans and speciation in Atlantic and eastern Pacific sea urchins of the genus Echinometra
TLDR
Correlation between cladogenic and vicariant events supports E. Mayr’s contention that marine species, despite their high dispersal potential, form by means of geographical separation.
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Spread of Diadema Mass Mortality Through the Caribbean
TLDR
Several lines of indirect evidence suggest that the phenomenon is due to a water-borne pathogen, and if so, this is the most extensive epidemic documented for a marine invertebrate.
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PHYLOGEOGRAPHY OF THE PANTROPICAL SEA URCHIN EUCIDARIS IN RELATION TO LAND BARRIERS AND OCEAN CURRENTS
TLDR
The phylogeny of Eucidaris confirms Ernst Mayr's conclusions that major barriers to the dispersal of tropical echinoids have been the wide stretch of deep water between central and eastern Pacific, the cold water off the southwest coast of Africa, and the Isthmus of Panama and suggests that a colonization event in the eastern Pacific has led to speciation between mainland and island populations.
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Testing electrophoretic data for agreement with hardy-weinberg expectations
TLDR
This paper summarizes literature on statistical testing for Hardy-Weinberg equilibrium and suggests and analytical strategy based on carrying out computationally simple goodness-of-fit ϰ2 tests when appropriate, and resorting to computationally tedious, exact tests when necessary.
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TEST FOR SIMULTANEOUS DIVERGENCE USING APPROXIMATE BAYESIAN COMPUTATION
TLDR
A flexible approximate Bayesian computational (ABC) framework that can test for simultaneous divergence (TSD) using a hierarchical model that incorporates idiosyncratic differences in demographic history across taxon pairs is introduced and is shown to be accurate even with single-locus mitochondrial DNA (mtDNA) data.
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