00421nas a2200121   4500008004100000245008800041210006900129300001200198490000700210100001900217700001500236856004800251       1999                        eng d00aPartial 28S rDNA sequence and the antiquity of hydrothermal vent endemic gastropods0 aPartial 28S rDNA sequence and the antiquity of hydrothermal vent  a255-2740 v131 aMcArthur, A.G.1 aKoop, B.F.  uhttps://neritopsine.myspecies.info/node/27102660nas a2200145   4500008004100000245018500041210006900226260001300295300001400308490000700322520209300329100002102422700002302443856004802466       2008                        eng d00aMolecular phylogenies and historical biogeography of a circumtropical group of gastropods (Genus: <i>Nerita</i>): implications for regional diversity patterns in the marine tropics0 aMolecular phylogenies and historical biogeography of a circumtro  c2008 Sep  a1067-10860 v483 aTo determine how historical processes, namely speciation, extinction, and dispersal, have contributed to regional species diversity patterns across the marine tropics, we examined the biogeographical history of a circumtropical genus of intertidal gastropods. A species-level phylogeny of Nerita, representing approximately 87% of extant species, was developed from 1608bp of mitochondrial (COI and 16S) and nuclear (ATPSalpha) markers. Phylogenetic relationships generally corresponded to prior classifications; however, comprehensive sampling revealed a number of previously undetected ESUs. Using the resulting tree as a framework, we combined geographical distributions and fossil evidence to reconstruct ancestral ranges, produce a time-calibrated chronogram, and estimate diversification rates. Analyses revealed two monophyletic eastern Pacific+Atlantic (EPA) clades, each of which likely split from an Indo-West Pacific (IWP) sister clade prior to an early Miocene Tethys Seaway closure. More recent diversification throughout the IWP appears to have been driven by both vicariance and dispersal events; EPA diversity has been further shaped by speciation across the Central American Seaway prior to its closure and dispersal across the Atlantic. Despite the latter, inter-regional dispersal has been rare, and likely contributes little to regional diversity patterns. Similarly, infrequent transitions into temperate regions combined with reduced diversification rates may explain low diversity in West and South Pacific clades. Since origination, Nerita diversification appears remarkably constant, with the exception of a lag in the late Eocene-early Oligocene and elevated rates in the late Oligocene-early Miocene. However, a comparison among regions suggested that IWP clades have experienced, on average, higher rates of speciation. Fossil evidence indicates that the EPA likely witnessed greater extinction relative to the IWP. We propose that regional differences in species diversity in Nerita have been largely shaped by differential rates of speciation and extinction.1 aFrey, Melissa, A1 aVermeij, Geerat, J  uhttps://neritopsine.myspecies.info/node/231