A history of diversification, extinction, and invasion in tropical America as derived from species-level phylogenies of chionine genera (Family Veneridae)

2001 ◽  
Vol 75 (5) ◽  
pp. 644-657
Author(s):  
Peter D. Roopnarine
Keyword(s):  
Species Level ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Western Atlantic ◽  
Early Oligocene ◽  
Tropical America ◽  
History Of ◽  
Extinction Events ◽  
Fossil Records

Phylogenetic reconstructions of two tropical American venerid genera, Chione and Chionopsis (subfamily Chioninae) were attempted at the species-level. The purposes of the analyses were to provide historical reconstructions of origination and extinction events in the two clades, as well as patterns of invasion and diversification. The analyses were based entirely on conchological characters to facilitate the inclusion of a substantial number of fossil taxa, but difficulties were encountered due to the quality of preservation and availability of material. Nevertheless the two genera were established as monophyletic clades, and the reconstructions yielded considerable insight into their histories in tropical America. The analyses suggest that both genera originated in the tropical western Atlantic, Chionopsis by at least the early Oligocene, and Chione in the early Miocene. Various branches of both genera subsequently invaded the tropical eastern Pacific several times prior to Seaway closure, with only one possible reciprocal invasion of the western Atlantic. Pliocene extinction affected both genera more significantly in the western Atlantic relative to the eastern Pacific, and diversity is higher today in the latter region. These conclusions are not entirely consistent with the fossil records of the genera, but this incongruency highlights the need for much more extensive sampling of the eastern Pacific Cenozoic record.

A history of diversification, extinction, and invasion in tropical America as derived from species-level phylogenies of chionine genera (Family Veneridae)

2001 ◽  
Vol 75 (3) ◽  
pp. 644-657 ◽  
Author(s):  
Peter D. Roopnarine
Keyword(s):  
Species Level ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Western Atlantic ◽  
Early Oligocene ◽  
Tropical America ◽  
History Of ◽  
Extinction Events ◽  
Fossil Records

Phylogenetic reconstructions of two tropical American venerid genera, Chione and Chionopsis (subfamily Chioninae) were attempted at the species-level. The purposes of the analyses were to provide historical reconstructions of origination and extinction events in the two clades, as well as patterns of invasion and diversification. The analyses were based entirely on conchological characters to facilitate the inclusion of a substantial number of fossil taxa, but difficulties were encountered due to the quality of preservation and availability of material. Nevertheless the two genera were established as monophyletic clades, and the reconstructions yielded considerable insight into their histories in tropical America. The analyses suggest that both genera originated in the tropical western Atlantic, Chionopsis by at least the early Oligocene, and Chione in the early Miocene. Various branches of both genera subsequently invaded the tropical eastern Pacific several times prior to Seaway closure, with only one possible reciprocal invasion of the western Atlantic. Pliocene extinction affected both genera more significantly in the western Atlantic relative to the eastern Pacific, and diversity is higher today in the latter region. These conclusions are not entirely consistent with the fossil records of the genera, but this incongruency highlights the need for much more extensive sampling of the eastern Pacific Cenozoic record.

Distribution, history, and taxonomy of the Thais clade (Gastropoda: Muricidae) in the Neogene of tropical America

2001 ◽  
Vol 75 (3) ◽  
pp. 697-705 ◽  
Author(s):  
Geerat J. Vermeij
Keyword(s):  
New Species ◽  
South Atlantic ◽  
Eastern Pacific ◽  
Caribbean Region ◽  
Large Species ◽  
The South ◽  
Western Atlantic ◽  
Extinction Rates ◽  
Tropical America ◽  
The Caribbean

The earliest known members of the Thais clade of rapanine muricid neogastropods comprise four species from the Cantaure Formation (early Miocene: Burdigalian) of Venezuela; three of these species are new. Neorapana rotundata Gibson-Smith et al., 1997, is most closely related to the Recent Pacific Mexican N. tuberculata (Sowerby, 1835), and represents the only known Atlantic occurrence of the genus. Thais brevicula new species is closest to T. callaoensis (Gray, 1828) from the Recent of northern Peru and the Galápagos. A review of the genus Thais indicates that the typical members of this group occur in the South Atlantic, West Africa, and eastern Pacific, but not in the Recent fauna of the southern Caribbean. Stramonita bifida new species is a large species related to the Recent S. haemastoma floridana (Conrad, 1837), which occurs throughout the Caribbean. A review of American species of Stramonita indicates that the taxon S. biserialis (de Blainville, 1832) from the Recent fauna of the eastern Pacific, and the taxon S. h. haemastoma (Linnaeus, 1767), may each be composed of more than one species despite the teleplanic dispersal of their larvae. Stramonita semiplicata new species is closely related to the Recent S. bicarinata (de Blainville, 1832) from the South Atlantic, and represents a lineage that occurred in the Caribbean region until at least the late Miocene. It may have given rise to the eastern Pacific genus Acanthais. The higher diversity and greater antipredatory specialization of eastern Pacific as compared to western Atlantic members of the Thais clade may have resulted from higher post-Miocene rates of speciation and lower extinction rates in the eastern Pacific.

The evolutionary history of the goby Elacatinus puncticulatus in the tropical eastern pacific: Effects of habitat discontinuities and local environmental variability

2019 ◽  
Vol 130 ◽  
pp. 269-285 ◽  
Author(s):  
E.R. Sandoval-Huerta ◽  
R.G. Beltrán-López ◽  
C.R. Pedraza-Marrón ◽  
M.A. Paz-Velásquez ◽  
A. Angulo ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Environmental Variability ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
History Of

scholarly journals Molluscan diversification and extinction on opposite sides of the Isthmus of Panama

1992 ◽  
Vol 6 ◽  
pp. 144-144
Author(s):  
Jeremy B. C. Jackson ◽  
Peter Jung
Keyword(s):  
Late Miocene ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Early Pliocene ◽  
Isthmus Of Panama ◽  
Late Neogene ◽  
Tropical America ◽  
The Caribbean ◽  
First Time ◽  
Final Closure

Molluscs are the most diverse and abundant tropical American macrofossils, but their distributions and evolution are not well understood. Classic studies by Olsson and Woodring documented a rich Late Miocene to Early Pliocene “Gatunian” fauna throughout the Caribbean and tropical Eastern Pacific, with many species in common between the oceans. This fauna was divided by formation of the Isthmus of Panama, and diverged into distinct Pacific and Caribbean faunas sometime thereafter. Diversity also decreased by about half in the Caribbean. However, the timing, rates and correlation of these major biological changes with changes in environmental conditions have not been resolved because of imprecise dating and taxonomy and failure to consider problems of sampling and biofacies in biological comparisons. We used the newly revised late Neogene stratigraphy for Panama and Costa Rica to date for the first time the radiation and extinction of molluscs on opposite sides of the Isthmus. Data include occurrences throughout tropical America for nearly 100 species of the Strombina-group (Gastropoda, Columbellidae) and for more than 500 gastropod and bivalve genera from 240 Late Miocene to Pleistocene isthmian collections.All evidence suggests that final closure of the Isthmus of Panama occurred between 3.5 and 2.5 My. Subgeneric divergence between the oceans was well developed, and trans-isthmian species were rare by the Early Pliocene, at least 2 Ma before final closure. Caribbean diversity remained high until 1.8 to 1.5 Ma when massive but selective extinction occurred. This was at least 1 Ma after final closure of the Isthmus, and may be correlated with onset of slightly cooler Caribbean sea surface temperatures in the Pleistocene. In contrast, Eastern Pacific diversity did not decline, and even increased during the Pleistocene.

Long-term natural and human perturbations and current status of Clipperton Atoll, a remote island of the Eastern Pacific

2006 ◽  
Vol 12 (3) ◽  
pp. 207 ◽  
Author(s):  
Christian H. Jost ◽  
Serge Andréfouët
Keyword(s):  
Coral Reef ◽  
Eastern Pacific ◽  
Current Status ◽  
Tropical Eastern Pacific ◽  
Remote Island ◽  
The World ◽  
The Future ◽  
Human Perturbations ◽  
History Of

Clipperton Atoll is one of the most isolated tropical island in the world and the only atoll of the eastern Pacific. Its outer slopes also make the largest coral reef of this region. Clipperton is a remarkable site for the geochemistry of its closed eutrophic stratified lagoon, the influence of both tropical eastern Pacific and Oceania gene pool on coral reef communities, the low diversity of the marine and land fauna, and for the equilibrium of its land ecosystem. The three components of the Clipperton Atoll seascape (coral reef-lagoon-land) all appear to have remarkable properties and history. All components experienced important changes in the last century due to anthropogenic (importation of exogenous species) or natural perturbations (closing of passes, coral bleaching). Here, we review the history of these three systems (land-lagoon-coral reef) and provide new insights of the current status of the atoll based on recent surveys and high resolution IKONOS satellite imagery. Most dramatic changes occurring in the last decades include explosion in crab Gecarcinus planatus population, almost-complete desertification of the island and increase in Masked Boobies Sula dactylatra population, making Clipperton Atoll one of the most important sites for this specie in the world. This review intends to provide a sound basis to discuss the future of Clipperton balanced between conservation and development priorities, and to raise awareness on the future of a delicate ecosystem.

scholarly journals CRUSTACEOS DECAPODOS DEL PACIFICO COLOMBIANO: LISTA DE ESPECIES Y CONSIDERACIONES ZOOGEOGRAFICAS

2016 ◽  
Vol 21 ◽  
Author(s):  
Rafael Lemaitre ◽  
Ricardo Alvarez León
Keyword(s):  
Gulf Of California ◽  
Pacific Coast ◽  
Marine Species ◽  
Eastern Pacific ◽  
Nominal Species ◽  
Review Of The Literature ◽  
Tropical Eastern Pacific ◽  
The Pacific ◽  
History Of ◽  
The Caribbean

The Pacific coast of Colombia has been poorly explored, and its fauna is one of the least known in the tropical eastern Pacific. Although knowledge of the decapod fauna from this coast has recently increased, the information is scattered in numerous sources. A review of the literature showed that 378 decapods have been reported from this coast, including the islands of Gorgona and Malpelo. The numbers of species are distributed as follows; Dendrobranchiata, 18; Caridea,79; Thalassinidea, 13; Palinura, 6; Anomura, 61; and Brachyura, 201 .Twenty-seven species are known exclusively from the Colombian coast, three of which are endemic to the islands of Malpelo or Gorgona. A list of nominal species is presented, including information on distribution, important references, and synonyms under which the taxa have been reported for this coast. A summary of the history of explorations of the Pacific coast of Colombia as it relates to decapods, is presented. Zoogeographic affinities are briefly discussed for the marine species based on published distributions. Affinities are greatest with the Gulf of California (51.8%), followed by the Galápagos (28.6%), the Indo-Pacific (8.8%), and the Caribbean- Atlantic (7.7%).

A multi-locus approach to elucidating the evolutionary history of the clingfish Tomicodon petersii (Gobiesocidae) in the Tropical Eastern Pacific

2021 ◽  
pp. 107316
Author(s):  
Eloísa Torres-Hernández ◽  
Isai Betancourt-Resendes ◽  
Arturo Angulo ◽  
D. Ross Robertson ◽  
Enrique Barraza ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
History Of

Revision of the family Euryplacidae Stimpson, 1871 (Crustacea: Decapoda: Brachyura: Goneplacoidea)

Zootaxa ◽  
2010 ◽  
Vol 2375 (1) ◽  
pp. 1 ◽  
Author(s):  
PETER CASTRO ◽  
PETER K. L. NG
Keyword(s):  
Florida Keys ◽  
Eastern Pacific ◽  
Nominal Species ◽  
Pacific Region ◽  
Tropical Eastern Pacific ◽  
Atlantic Region ◽  
Western Atlantic ◽  
The Family ◽  
The World ◽  
Pacific Species

The family Euryplacidae Stimpson, 1871, traditionally included in the Goneplacidae MacLeay, 1838, is revised based on the examination of the type material of many of its species as well as unidentified and previously identified material from around the world. The revised family now consists of 31 species (including five that are described as new) belonging to 13 genera (including four that are described as new): Eucrate De Haan, 1835, with eight species, of which one is new; Euryplax Stimpson, 1859, with two species; Frevillea A. Milne-Edwards, 1880, with three species; Henicoplax n. gen., with five species of which three are new; Heteroplax Stimpson, 1858, monotypic; Machaerus Leach, 1818, with two species; Nancyplax Lemaitre, García-Gómez, von Sternberg & Campos, 2001, monotypic; Platyozius Borradaile, 1902, monotypic; Psopheticoides Sakai, 1969, monotypic; Systroplax n. gen., monotypic; Trissoplax n. gen., with two species, of which one is new; Trizocarcinus Rathbun, 1914, with two species; Villoplax n. gen., monotypic; and Xenocrate Ng & Castro, 2007, monotypic. The genus Platyozius and Eucrate formosensis Sakai, 1974, are removed from the synonymy of Eucrate and E. alcocki Serène, in Serène & Lohavanijaya, 1973, respectively. Neotypes are selected for Heteroplax dentata Stimpson, 1858, and Pilumnoplax sulcatifrons Stimpson, 1858, two species described from Hong Kong that have a confusing taxonomic history. A neotype is also selected for Euryplax nitida Stimpson, 1859, described from the Florida Keys. Seven nominal species described by other authors were found to be junior subjective synonyms for other species: Eucrate affinis Haswell, 1882, E. costata Yang & Sun 1979, E. haswelli Campbell 1969, and Pseudorhombila sulcatifrons var. australiensis Miers, 1884, of Trissoplax dentata (Stimpson, 1858); Galene laevimanus (Lucas, in Jacquinot & Lucas, 1853) of Eucrate dorsalis (White, 1849); Heteroplax nagasakiensis Sakai, 1934, of H. transversa Stimpson, 1858; and Pilumnoplax sulcatifrons Stimpson, 1858, of Eucrate crenata (De Haan, 1835). Eight euryplacid genera are exclusively found in the Indo-West Pacific region (except one species introduced in the Mediterranean), one is exclusive to each the Eastern Atlantic and Tropical Eastern Pacific regions, three to the Western Atlantic region, and one genus has both Western Atlantic and Tropical Eastern Pacific species.

On two new species of the shrimp genus Salmoneus Holthuis, 1955 (Decapoda, Caridea, Alpheidae) from the tropical eastern Pacific

Zootaxa ◽  
2015 ◽  
Vol 3957 (5) ◽  
pp. 520 ◽  
Author(s):  
ARTHUR ANKER ◽  
JUAN FELIPE LAZARUS
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Morphological Characters ◽  
Sister Species ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Ecological Data ◽  
Western Atlantic ◽  
Two New Species ◽  
Alpheid Shrimp

The present study deals two new alpheid shrimp species from the transisthmian Salmoneus ortmanni (Rankin, 1898) complex. Salmoneus alvarezi sp. nov. is described based on materials collected in Bahía Málaga, Colombia, and Punta Morales, Costa Rica, and is closely related to the western Atlantic S. ortmanni and S. wehrtmanni Anker, 2011. Salmoneus malagensis sp. nov. is described based on specimens from Bahía Málaga, Colombia, and beyond any doubts represents the eastern Pacific sister species of the western Atlantic S. carvachoi Anker, 2007. The two new species can be easily distinguished from each other by a number of morphological characters and colouration, and in addition appear to be ecologically separated. All previous records of S. ortmanni from the eastern Pacific are reassigned, some tentatively, to S. alvarezi sp. nov. based on description, illustrations or ecological data.

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