scholarly journals Microplastic pollution in seawater and marine organisms across the Tropical Eastern Pacific and Galápagos

2020 ◽  
Author(s):  
Alonzo Alfaro-Núñez ◽  
Diana Astorga ◽  
Lenin Cáceres-Farías ◽  
Lisandra Bastidas ◽  
Cynthia Soto Villegas ◽  
...  
Keyword(s):  
Water Samples ◽  
Sea Water ◽  
Marine Organisms ◽  
Eastern Pacific ◽  
Human Consumption ◽  
Pacific Region ◽  
Eastern Tropical Pacific ◽  
Tropical Eastern Pacific ◽  
Plastic Debris ◽  
Galapagos Archipelago

Abstract It is not surprising anymore the detection of plastic debris degrading into micro and nanoplastics across all oceanic environments and in marine organisms, which now appears as one of the world’s main concerns. To determine the levels of microplastic pollution at sea, water samples were collected across a 4000 km-trajectory in the Tropical Eastern Pacific and the Galápagos archipelago, covering an area of 453,000 square kilometres. Furthermore, 240 specimens of 16 different species of fish, squid, and shrimp, all of human consumption, were collected along the continental coast. Microplastic particles were found in 100% of the water samples and marine organisms. Microplastic particles from 150 – 500 µm were the most predominant. This is one of the first reports simultaneously detecting and quantifying microplastic particles abundance in the Eastern Tropical Pacific region, the Galápagos archipelago and inside marine organisms.

scholarly journals Microplastic pollution in seawater and marine organisms across the Tropical Eastern Pacific and Galápagos

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alonzo Alfaro-Núñez ◽  
Diana Astorga ◽  
Lenin Cáceres-Farías ◽  
Lisandra Bastidas ◽  
Cynthia Soto Villegas ◽  
...  
Keyword(s):  
Water Samples ◽  
Sea Water ◽  
Marine Organisms ◽  
Eastern Pacific ◽  
Human Consumption ◽  
Tropical Eastern Pacific ◽  
Plastic Debris ◽  
Galapagos Archipelago ◽  
Micro Particles ◽  
Continental Coast

AbstractDetection of plastic debris degrading into micro particles across all oceanic environments and inside of marine organisms is no longer surprising news. Microplastic contamination now appears as one of the world’s environmental main concerns. To determine the levels of microplastic pollution at sea, water samples were collected across a 4000 km-trajectory in the Tropical Eastern Pacific and the Galápagos archipelago, covering an area of 453,000 square kilometres. Furthermore, 240 specimens of 16 different species of fish, squid, and shrimp, all of human consumption, were collected along the continental coast. Microplastic particles were found in 100% of the water samples and marine organisms. Microplastic particles ranging from 150 to 500 µm in size were the most predominant. This is one of the first reports simultaneously detecting and quantifying microplastic particles abundance and their impact on marine organisms of this region.

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.

scholarly journals First record of the blacktip reef shark Carcharhinus melanopterus (Carcharhiniformes: Carcharhinidae) from the Tropical Eastern Pacific

2017 ◽  
pp. 275-278
Author(s):  
Andrés López-Garro ◽  
Ilena Zanella ◽  
Geiner Golfín-Duarte ◽  
Maikel Pérez-Montero
Keyword(s):  
Costa Rica ◽  
National Park ◽  
First Record ◽  
Eastern Pacific ◽  
Juvenile Male ◽  
Eastern Tropical Pacific ◽  
Tropical Eastern Pacific ◽  
Reef Shark ◽  
Reef Sharks ◽  
Carcharhinus Melanopterus

The blacktip reef shark Carcharhinus melanopterus, is one of the most common Indo-Pacific reef sharks. On April 29, 2012, a juvenile male blacktip reef shark measuring 89 cm total length (TL), was incidentally caught during a research expedition in Chatham Bay, Isla del Coco National Park, Costa Rica, located in the Tropical Eastern Pacific. This is the first record of the species from Isla del Coco National Park, Costa Rica, and from the Tropical Eastern Pacific. Citation: López-Garro, A., I. Zanella, G. Golfín-Duarte & M. Pérez-Montero. 2012. First record of the blacktip reef shark Carcharhinus melanopterus (Carcharhiniformes: Carcharhinidae) from the Eastern Tropical Pacific. Rev. Biol. Trop. 60 (Suppl. 3): 275-278. Epub 2012 Dec 01.

scholarly journals ADDITIONAL DATA RELATED TO THE DISTRIBUTION OF VENTRALLY SCLEROTIZED SPECIES OF Lepidophthalmus HOLMES, 1904 (DECAPODA: AXIIDEA, CALLIANASSIDAE, CHALLICHIRINAE) FROM THE TROPICAL EASTERN PACIFIC

2012 ◽  
Vol 27 (2) ◽  
pp. 59
Author(s):  
H. E. Hendricks ◽  
J. López
Keyword(s):  
El Salvador ◽  
Additional Data ◽  
Tropical Pacific ◽  
Eastern Pacific ◽  
Eastern Tropical Pacific ◽  
Tropical Eastern Pacific

Specimens of the two species of “ventrally sclerotized” Lepidophthalmus currently known from the eastern tropical pacific were collected at El Salvador and Mexico. These specimens represent additional records and support the idea that L. bocourti and L. eiseni should be considered as separated species. Información adicional relacionada con la distribución de especies de Lepidophthalmus Holmes, 1904 (Decapoda: Axiidea, Callianassidae, Challichirnae) con esclerosis ventral en el Pacífico este tropical Especímenes de las dos especies de Lepidophthalmus con esclerosis ventral, conocidas para el Pacífico este tropical fueron recolectadas en El Salvador y México. Representan registros adicionales y apoyan la idea de que L. bocourti y L. eiseni representan dos especies distintas.

Population-level morphological variation of Anisotremus interruptus (Gill, 1862) (Perciformes: Haemulidae) in the Tropical Eastern Pacific, with the description of two new species

Zootaxa ◽  
2021 ◽  
Vol 4975 (1) ◽  
pp. 141-158
Author(s):  
EDGAR ADRIÁN ACEVEDO-ÁLVAREZ ◽  
GORGONIO RUIZ-CAMPOS ◽  
OMAR DOMÍNGUEZ-DOMÍNGUEZ
Keyword(s):  
New Species ◽  
Population Level ◽  
Taxonomic Diversity ◽  
Oceanic Islands ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Morphometric Variation ◽  
Galapagos Archipelago ◽  
Two New Species ◽  
Revillagigedo Archipelago

The family Haemulidae is a wide-ranging group of marine fishes that are of significant commercial value in the Tropical Eastern Pacific (TEP). Phylogenetic studies on the species Anisotremus interruptus have revealed high levels of genetic diversity as well as divergence among populations in the TEP, which suggests that the taxonomic diversity of A. interruptus could be underestimated. Anisotremus interruptus has a large distribution, ranging from central Baja California, Mexico to northern Peru, including all oceanic islands except Clipperton. Recent genetic studies on this taxon indicate the presence of a species complex of at least three distinctive lineages. We performed a comparative study of the population-level meristic and morphometric variation of A. interruptus in the TEP to evaluate and identify possible morphological features concordant with the genetic differentiation of populations. Our results provide evidence of the presence of two new species of the genus Anisotremus, A. perezponcedeleoni sp. n. from the Revillagigedo Archipelago and A. espinozai sp.n. from Galapagos Archipelago-Cocos Island. 

scholarly journals Acanthurus mata (Cuvier, 1829), Elongate Surgeonfish (Acanthuridae), newly recorded in the Tropical Eastern Pacifi

Check List ◽  
2021 ◽  
Vol 17 (6) ◽  
pp. 1609-1614
Author(s):  
D. Ross Robertson ◽  
Allison L. Morgan-Estapé ◽  
Carlos J. Estapé
Keyword(s):  
Reef Fish ◽  
Habitat Preference ◽  
Fish Fauna ◽  
Scuba Diving ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Additional Species ◽  
Galapagos Archipelago ◽  
Pelagic Habitat ◽  
Recreational Scuba

The reef-fish fauna of the Tropical Eastern Pacific (TEP) includes 12 species of surgeonfishes (Acanthuridae), five of them in the genus Acanthurus. Recent recreational scuba diving at Isla Darwin in the Galapagos archipelago produced photographs of adults of an additional species of Acanthurus, A. mata (Cuvier, 1829), for which there are no previous records in the TEP. This species may have escaped previous notice due to its semi-pelagic habitat preference and its resemblance to Acanthurus xanthopterus Valenciennes, 1835, which occurs throughout much of the Galapagos.

SITE-SPECIFIC EQUATIONS OF STATE FOR COASTAL SEA AREAS AND INLAND WATER BODIES

2017 ◽  
Author(s):  
Natalia Andrulionis ◽  
Natalia Andrulionis ◽  
Ivan Zavialov ◽  
Ivan Zavialov ◽  
Elena Kovaleva ◽  
...  
Keyword(s):  
Equation Of State ◽  
Black Sea ◽  
Water Samples ◽  
Equations Of State ◽  
Sea Water ◽  
Ionic Composition ◽  
Water Bodies ◽  
Aral Sea ◽  
The Black Sea ◽  
Coastal Sea

This article presents a new method of laboratory density determination and construction equations of state for marine waters with various ionic compositions and salinities was developed. The validation of the method was performed using the Ocean Standard Seawater and the UNESCO thermodynamic equation of state (EOS-80). Density measurements of water samples from the Aral Sea, the Black Sea and the Issyk-Kul Lake were performed using a high-precision laboratory density meter. The obtained results were compared with the density values calculated for the considered water samples by the EOS-80 equation. It was shown that difference in ionic composition between Standard Seawater and the considered water bodies results in significant inaccuracies in determination of water density using the EOS-80 equation. Basing on the laboratory measurements of density under various salinity and temperature values we constructed a new equation of state for the Aral Sea and the Black Sea water samples and estimated errors for their coefficients.

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