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.

scholarly journals Shallow-Water Foraminifera and Other Microscopic Biota of Clipperton Island, Tropical Eastern Pacific

2019 ◽  
Author(s):  
Mary L McGann ◽  
Robert W. Schmieder ◽  
Louis-Philippe Loncke
Keyword(s):  
Shallow Water ◽  
Geographic Location ◽  
Oceanic Islands ◽  
Tropical Pacific ◽  
Eastern Pacific ◽  
North Equatorial Current ◽  
Tropical Eastern Pacific ◽  
Foraminiferal Assemblage ◽  
Island Endemic ◽  
The North

<p></p><p>The recent foraminiferal fauna and associated microbiota of Clipperton Island (10.2833°N, 109.2167°W) were investigated at 20 sites collected in the intertidal zone around the perimeter of the island and from the edge of the inner brackish-water lagoon. Due to the island’s geographic location in a low productivity zone, a lack of variable habitats on and surrounding the island, and heavy surf that pounds the exposed land, a depauperate fauna was recovered although mixed biogeographic affinities are represented. The shallow-water foraminiferal assemblage has no endemics but primarily tropical Indo-Pacific and eastern Pacific (Panamic) affinities, as well as one species of Caribbean affinity. The most abundant taxa are <i>Sorites</i> spp. and <i>Quinqueloculina</i> spp. Noticeably absent are any species of <i>Amphistegina, </i>despite the fact that they are considered ubiquitous in the tropical Pacific. The molluscan fauna has Clipperton Island endemics, a tropical Pacific/Inter-Island endemic, and tropical eastern Pacific oceanic islands/Panamic Molluscan affinities. The ostracods included endemics found restricted to Clipperton Island lagoon, as well as Indo-Pacific and Panamic Province species. The foraminifera, mollusks, and ostracods are thought to disperse to Clipperton Island by way of the North Equatorial Countercurrent and North Equatorial Current, suggesting that the island is indeed a stepping stone for migration both east and west across the Eastern Pacific Barrier.</p><br><p></p>

scholarly journals Ophioderma hendleri sp. nov. (Echinodermata: Ophiuroidea: Ophiodermatidae) and its congeners from the Eastern Pacific

2020 ◽  
Vol 729 ◽  
Author(s):  
Rebeca Granja-Fernández ◽  
Tania Pineda-Enríquez ◽  
Francisco Alonso Solís-Marín ◽  
Alfredo Laguarda-Figueras
Keyword(s):  
Costa Rica ◽  
Original Description ◽  
Tropical Pacific ◽  
Distribution Range ◽  
Eastern Pacific ◽  
Type Material ◽  
Valid Species ◽  
Eastern Tropical Pacific ◽  
The World ◽  
Cocos Island

The widespread Ophioderma hendleri sp. nov., from the Eastern Tropical Pacific (Mexico to Colombia) is distinguished from its congeners by having radial shields covered by granules, naked adoral shields, up to 11 arm spines, and by its brown and beige coloration. Ophioderma hendleri sp. nov. belongs to the group of species with naked adoral shields (i.e., O. pentacanthum H.L. Clark, 1917, O. variegatum Lütken, 1856), and it has frequently been misidentified as O. panamense Lütken, 1859 or O. variegatum. Therefore, the main aim of the present work was to describe Ophioderma hendleri sp. nov. and differentiate it from its congeners. The original description of O. panamense was incomplete; thus, we provide a redescription. Due to the confusion in previous designations of its type material, we designate a lectotype and paralectotype of O. variegatum. Finally, we expand the distribution range of O. pentacanthum to Cocos Island, Costa Rica. With this work, the total number of valid species of Ophioderma Müller & Troschel, 1840 in the world increases to 33 and in the Eastern Pacific to nine species.

Distribution and Differentiation of Populations of Dolphins of the Genus Stenella in the Eastern Tropical Pacific

1975 ◽  
Vol 32 (7) ◽  
pp. 1059-1067 ◽  
Author(s):  
William F. Perrin
Keyword(s):  
Adult Male ◽  
Color Pattern ◽  
Tropical Pacific ◽  
Costa Rican ◽  
Eastern Pacific ◽  
Eastern Tropical Pacific ◽  
Striped Dolphin ◽  
Spotted Dolphin ◽  
Spinner Dolphin ◽  
Stenella Attenuata

There are at least two races of spotted dolphin, Stenella attenuata, in the eastern Pacific, based on length, color pattern, and skeletal differences. The coastal form is provisionally called S. attenuata graffmani. The offshore form is distinct from a third, Hawaiian race. Likewise, at least three unnamed races of spinner dolphin, S. longirostris, occur in the eastern Pacific. Length, shape of adult male, color pattern, and cranial differences are used to distinguish a Costa Rican, an eastern, and a whitebelly race. An Hawaiian race is distinct from these. A distributional break may indicate two stocks of the striped dolphin, S. coeruleoalba.

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 Ocean salinity indices of interannual modes in the tropical Pacific

2021 ◽  
Author(s):  
Jianwei Chi ◽  
Tangdong Qu ◽  
Yan Du ◽  
Jifeng Qi ◽  
Ping Shi
Keyword(s):  
Global Warming ◽  
El Niño ◽  
El Nino ◽  
Tropical Pacific ◽  
Eastern Pacific ◽  
Dipole Mode ◽  
Eastern Tropical Pacific ◽  
Central Pacific El Niño ◽  
Eastern Pacific El Niño ◽  
The Tropical Pacific

AbstractThis study investigates the interannual modes of the tropical Pacific using salinity from observations, ocean reanalysis output and CMIP6 products. Here we propose two indices of sea surface salinity (SSS), a monopole mode and a dipole mode, to identify the El Niño—South Oscillation (ENSO) and its diversity, respectively. The monopole mode is primarily controlled by atmospheric forcing, namely, the enhanced precipitation that induces negative SSS anomalies across nearly the entire tropical Pacific. The dipole mode is mainly forced by oceanic dynamics, with zonal current transporting fresh water from the western fresh pool into the western-central and salty water from the subtropics into the eastern tropical Pacific. Under a global warming condition, an increase in the monopole and dipole mode variance indicates an increase in both the central and eastern Pacific El Niño variability. The increase in central Pacific El Niño variability is largely due to enhanced vertical stratification during global warming in the upper layer, with intensified zonal advection. An eastern Pacific El Niño-like warming pattern contributes to the increase in eastern Pacific El Niño, with enhanced precipitation over the central-eastern tropical Pacific.

scholarly journals Shallow-Water Foraminifera and Other Microscopic Biota of Clipperton Island, Tropical Eastern Pacific

2019 ◽  
Author(s):  
Mary L McGann ◽  
Robert W. Schmieder ◽  
Louis-Philippe Loncke
Keyword(s):  
Shallow Water ◽  
Geographic Location ◽  
Oceanic Islands ◽  
Tropical Pacific ◽  
Eastern Pacific ◽  
North Equatorial Current ◽  
Tropical Eastern Pacific ◽  
Foraminiferal Assemblage ◽  
Island Endemic ◽  
The North

<p></p><p>The recent foraminiferal fauna and associated microbiota of Clipperton Island (10.2833°N, 109.2167°W) were investigated at 20 sites collected in the intertidal zone around the perimeter of the island and from the edge of the inner brackish-water lagoon. Due to the island’s geographic location in a low productivity zone, a lack of variable habitats on and surrounding the island, and heavy surf that pounds the exposed land, a depauperate fauna was recovered although mixed biogeographic affinities are represented. The shallow-water foraminiferal assemblage has no endemics but primarily tropical Indo-Pacific and eastern Pacific (Panamic) affinities, as well as one species of Caribbean affinity. The most abundant taxa are <i>Sorites</i> spp. and <i>Quinqueloculina</i> spp. Noticeably absent are any species of <i>Amphistegina, </i>despite the fact that they are considered ubiquitous in the tropical Pacific. The molluscan fauna has Clipperton Island endemics, a tropical Pacific/Inter-Island endemic, and tropical eastern Pacific oceanic islands/Panamic Molluscan affinities. The ostracods included endemics found restricted to Clipperton Island lagoon, as well as Indo-Pacific and Panamic Province species. The foraminifera, mollusks, and ostracods are thought to disperse to Clipperton Island by way of the North Equatorial Countercurrent and North Equatorial Current, suggesting that the island is indeed a stepping stone for migration both east and west across the Eastern Pacific Barrier.</p><br><p></p>

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 New distribution record of Megalops atlanticus Valenciennes, 1847 (Elopiformes, Megalopidae) in El Salvador, Eastern Pacific Ocean

Check List ◽  
2018 ◽  
Vol 14 (5) ◽  
pp. 933-935 ◽  
Author(s):  
José Enrique Barraza
Keyword(s):  
Pacific Ocean ◽  
El Salvador ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Tropical Eastern Pacific ◽  
Species Occurrence ◽  
Regional Monitoring ◽  
Megalops Atlanticus ◽  
Distribution Record ◽  
New Distribution

A new geographical distribution record of an Atlantic Ocean species, Megalops atlanticus Valenciennes, 1847, is reported on the Tropical Eastern Pacific Ocean based on 2 incidental captures by local fishermen at the Acajutla city, El Salvador. Two photographs, which give clear evidence of this species, demonstrate the increasing range of M. atlanticus in the Tropical Eastern Pacific. Regional monitoring of this species occurrence is recommended.

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