Fish diversity divergence between tropical eastern pacific and tropical western Atlantic coral reefs

2020 ◽  
Vol 103 (11) ◽  
pp. 1323-1341
Author(s):  
Manuel Olán-González ◽  
Héctor Reyes-Bonilla ◽  
Lorenzo Álvarez-Filip ◽  
Horacio Pérez-España ◽  
Damien Olivier
Keyword(s):  
Coral Reefs ◽  
Eastern Pacific ◽  
Fish Diversity ◽  
Tropical Eastern Pacific ◽  
Western Atlantic

scholarly journals PRIMER REGISTRO DEL GENERO Echineulima LUTZEN Y NIELSEN (GASTROPODA: EULIMIDAE), MOLUSCOS PARASITOS DE ERIZOS DE MAR EN LA ISLA DE GORGONA (PACIFICO COLOMBIANO

2016 ◽  
Vol 17 ◽  
Author(s):  
Jaime Ricardo Cantera K. ◽  
Raúl Neira O.
Keyword(s):  
Coral Reefs ◽  
Geographical Distribution ◽  
Sea Urchin ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
First Time

This paper reports for the first time for the tropical Eastern Pacific the genus Echineulima (Gastropoda: Eulimidae), a parasite of the sea urchin Centrostephanus coronatus, in coral reefs of Gorgona Island at 2 4 m depth. It seems likely that it is an undescribedspecies. This paper presents information abftut the snail including a brief description, size, habitat, and considerations about the effects of the parasite on the sea urchin. A discussión about the geographical distribution of the genus is also presented.

scholarly journals Filling the gaps: first record of the Crown-of-thorns Starfish, Acanthaster planci (Linnaeus, 1758) (Spinulosida: Acanthasteridae), at Gorgona Island, Colombia, Tropical Eastern Pacific

Check List ◽  
2017 ◽  
Vol 13 (3) ◽  
pp. 2112
Author(s):  
Fernando A. Zapata ◽  
María Del Mar Palacios ◽  
Valentina Zambrano ◽  
Melina Rodríguez-Moreno
Keyword(s):  
Coral Reefs ◽  
Geographic Distribution ◽  
First Record ◽  
Eastern Pacific ◽  
Pocillopora Damicornis ◽  
Acanthaster Planci ◽  
Tropical Eastern Pacific

We report the occurrence of a major corallivore, the Crown-of-thorns Starfish Acanthaster planci, on the coral reefs of Gorgona Island, Tropical Eastern Pacific. Three individuals were sighted on opposite sides of the island, where they fed on small coral colonies of Pavona varians and Pocillopora damicornis. These sightings are noteworthy in light of reports that have demonstrated that the geographic distribution of A. planci is gradually increasing in the equatorial eastern Pacific, particularly south of the Gulf of Chiriquí (Panama) where it was previously absent.

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.

scholarly journals MOLUSCOS DE LA REGION DE LA CIENAGA GRANDE DE SANTA MARTA (COSTA DEL CARIBE DE COLOMBIA)

2016 ◽  
Vol 15 ◽  
Author(s):  
Rudo Von Cosel
Keyword(s):  
Marine Species ◽  
Eastern Pacific ◽  
Natural Occurrence ◽  
Freshwater Species ◽  
Tropical Eastern Pacific ◽  
Caribbean Coast ◽  
Western Atlantic ◽  
Small Areas ◽  
Planktonic Larvae ◽  
The Caribbean

This paper deals with the moDusk species known from the Ciénaga Grande de Santa Marta and from the littoral zone and the upper continental shelf of the coastal strip between lala de Salamanca and the balneario El Rodadero (Caribbean coast of Colombia, South America). 468 species and subspecies ofmarine, brackish-water and freshwater mollusks are reponed comprising 211 bivalves. 6 scaphopods and 251 gastropods. 101 species and 1 subspecies have been found in the Ciénaga Grande (most of them also in the sea), a further 9 marine species have been recorded only as old shells in the estuarine part of the Ciénaga Grande, the rest have been collected exclusively in the marine part of the investigated area. 268 species (120 bivalves, 3 scaphopods and 145 gastropods) have been live-collected, the remainder only as empty shells. 165 species and 9 subspecies (90 + 1 bivalves and 75 + 2 gastropods) are monographed and discussed in detail, among them 98 species and 1 subspecies (48 bivalves and 50 + 1 gastropods) from the Ciénaga Grande or its estuarine región, and 67 species and 2 subspecies only from the sea. Of the 98 species from the Ciénaga Grande, 64 have been live-collected, tlte oth*er 34 as empty shells only. The Ciénaga Grande de Santa Marta is the largest coastal lagoon of the Caribbean coast of Colombia, occupying an area of 450 km'. According to the season, drastic changes in salinity of between 0 and S0*/oo may be observed. Depth varies between 1 and 2.5 m, and the shore mostly consists of mangrove swamps. The bottom is muddy, some more or less extended areas having oyster reefs or shell concentrates. There are small areas in the northern part with sandy bottoms. Most mollusk species enter the lagoon and spread out within it as planktonic larvae by means of the currents, if conditions are favourable. Only very rarely are adult snails able to enter {he Ciénaga Grande actively. The propagation of the planktonic larvae within the lagoon depends on the nearest natural occurrence of the species, the duration of the pelagic phase, settlement depends on the presence of suitable substrate (besides the other ecological conditions needed). On account of finding older empty shells in a relative uniform state of preservation throughout the whole basin of the Ciénaga Grande, and of species not having been encountered there live, it can be assumed that there had previously existed an extremely long period of high salinity in the lagoon, with lower amplitudes than nowadays. According to C dates this period can be located ¿00-360 years ago, and its duration is estimated at at lea»t 3.5 years. The reason for this was most probably the greater interchange of sea and lagoonal water through several no longer existing, but still traceable, inlets. The zoogeographic division of those species treated in detail (except the freshwater species) is as follows: western Atlantic species. 68; Caribbean species. 48: southern Caibbean species, partly also from Brasil, 39. Í2 species are amphi-atlantic and 5 amphi-american. Six species known from Suriname, Venezuela or Brasil are recorded for the first time from Colombia and the southwestern Caribbean. 69 species have a win species (cognate species) existing in the Eastern Pacific (Panamic zoogeographic province). The portion of species with Pacific twin species found in the studied area is very high in comparison with other regions of the Caribbean, especially among the bivalves. This is due most probably to the similarity of the biotopes on large parts of the Colombian Caribbean coast and the tropical Eastern Pacific coast, preferred by these species.

Revision of the Alpheus nuttingi (Schmitt) species complex (Crustacea: Decapoda: Alpheidae), with description of a new species from the tropical eastern Pacific

Zootaxa ◽  
2007 ◽  
Vol 1577 (1) ◽  
pp. 41-60 ◽  
Author(s):  
ARTHUR ANKER ◽  
CARLA HURT ◽  
NANCY KNOWLTON
Keyword(s):  
Gulf Of California ◽  
Species Complex ◽  
Divergence Time ◽  
Color Pattern ◽  
Sister Species ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Western Atlantic ◽  
Sister Clade ◽  
Pacific Species

The Alpheus nuttingi (Schmitt, 1924) species complex consists of three species.  The only western Atlantic species, A. nuttingi, occurs from the southeastern United States to Brazil.  The two eastern Pacific species are A. galapagensis Sivertsen, 1933 (synonyms: A. canalis Kim & Abele, 1988; A. cryptodentatus Christoffersen & Ramos, 1988), which occurs from the Gulf of California to Colombia and Galapagos, and A. millsae, n. sp., presently known only from a few localities in Panama.  The three species differ morphologically, genetically, and in color pattern.  The two eastern Pacific species both can be found in the intertidal, but A. millsae, n. sp. occurs slightly deeper, suggesting the possibility of ecological speciation.  All evidence shows that A. nuttingi and A. millsae, n. sp. are transisthmian sister species, with A. galapagensis forming their sister clade.  Genetic differentiation between the transisthmian sister species suggests a divergence time of approximately 6 mya, well before the final closure of the Isthmus of Panama.

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.

Unesconia coibensis, gen. et sp. nov., a miniature sponge-associated shrimp from a biodiversity hotspot in the tropical eastern Pacific (Decapoda: Palaemonidae)

Zootaxa ◽  
2020 ◽  
Vol 4731 (1) ◽  
pp. 115-133
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Genus ◽  
Pacific Coast ◽  
Dorsal Surface ◽  
Eastern Pacific ◽  
New Genus And Species ◽  
Tropical Eastern Pacific ◽  
Diagnostic Features ◽  
Western Atlantic ◽  
Shallow Marine ◽  
Associated Species

A new palaemonid shrimp genus, Unesconia gen. nov., is established to accommodate a peculiar, small, presumably sponge-associated species, Unesconia coibensis gen. et sp. nov. The description of the new genus and species is based on several specimens found in the shallow marine waters of the Coiba Archipelago, Pacific coast of Panama. Unesconia gen. nov. does not seem to have close affinities to other eastern Pacific or western Atlantic palaemonid genera, including those harbouring sponge symbionts. On the other hand, it shares many characters with three Indo-West Pacific genera, which contain sponge-associated species, viz. Paraclimenaeus Bruce, 1988, Apopontonia Bruce, 1976 and Climeniperaeus Bruce, 1996. The most important diagnostic features of Unesconia gen. nov. are the strongly carinate, dorsally dentate rostrum, with its lateral carinae greatly expanded basally and armed with strong supraorbital teeth; the non-filtering mouthparts, with mandible lacking palp; the first pereiopod chela with excavated fingers and strongly tridentate fingertips; the asymmetrical second pereiopods (chelipeds), with the major chela bearing a double-fossa mechanism on the finger cutting edges; the ambulatory pereiopod dactylus armed with one large tooth and at least two small spinules on the ventral margin of the corpus, in addition to the terminal unguis; the lateral section of the uropodal diaeresis armed with five spiniform setae, the latter not extending to the lateral margin of the exopod; and the telson with two pairs of stout long cuspidate setae on dorsal surface and three pairs of strong, elongate spiniform setae on the posterior margin. 

scholarly journals Current Ecological Status of Remote Coral Reefs of Clipperton Island, Tropical Eastern Pacific

2021 ◽  
Author(s):  
Claudia Pogoreutz ◽  
Eric E. G. Clua ◽  
JOSE DE JESUS ADOLFO TORTOLERO LANGARICA
Keyword(s):  
Coral Reefs ◽  
Coral Cover ◽  
Ecological Status ◽  
Parasite Prevalence ◽  
Coral Community ◽  
Eastern Pacific ◽  
Marine Biodiversity ◽  
Live Coral ◽  
Tropical Eastern Pacific ◽  
Live Coral Cover

Abstract Clipperton, an uninhabited and remote coral atoll from the Eastern Pacific, is an important steppingstone area that harbors a high marine biodiversity. Despite its biogeographic importance, little information on the ecological status of its coral reefs is available from the last decade. Herein, we characterized the benthic coral community and health status among four different shallow reef-zones (North to South) of Clipperton during the Tara Pacific expedition in 2018. The benthic composition and coverage percentage, as well as occurrence of a pink-spotted coral phenotype (trematodiasis infection) was assessed. Total live coral cover on Clipperton reefs was 66% (55-85%), differing between sites, with massive Porites and branching Pocillopora corals dominating the benthic community with an average 48% (32-66%), and 15% (3-21%), respectively. While Clipperton reefs exhibited significant live coral cover overall, the trematode infection was commonly observed, with a higher occurrence in massive corals (Porites 27%, and Pavona 31%). This observation is possibly related to the combined effects of previously heatwaves, and local inputs of guano-derived nutrients discharged during storms and hurricanes. These results demonstrates that even highly remote reefs supporting high coral cover can be subjected to local and global threats, including but not limited to parasite prevalence, likely in relation to natural disturbances such as thermal stress and tropical cyclones.

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