Range expansion of the whitenose shark, Nasolamia velox, and migratory movements to the oceanic Revillagigedo Archipelago (west Mexico)

2017 ◽  
Vol 98 (4) ◽  
pp. 949-953 ◽  
Author(s):  
Frida Lara-Lizardi ◽  
Mauricio Hoyos-Padilla ◽  
James T. Ketchum ◽  
Felipe Galván-Magaña
Keyword(s):  
Acoustic Telemetry ◽  
Gulf Of California ◽  
National Park ◽  
Oceanic Islands ◽  
Eastern Pacific ◽  
Single Individual ◽  
Galapagos Archipelago ◽  
West Mexico ◽  
Revillagigedo Archipelago ◽  
Migratory Movements

Current literature considers that Nasolamia velox has a limited distribution along the coastline of the Eastern Pacific with sporadic sightings in the Galapagos Archipelago. This study provides evidence of the occurrence of this species at the Revillagigedo Archipelago (18°99′186″N 112°08′44″W), Mexico, using acoustic telemetry and videos taken from 2014 to 2016. We report here movements from a coastal location (National Park Cabo Pulmo) to a group of oceanic islands (Revillagigedo Archipelago) by one single individual, supporting the idea of the potential connectivity of sharks between the Gulf of California and the Revillagigedo Archipelago. This report extends the known distribution of N. velox to 400 km off the mainland coast of the Americas, thereby increasing the knowledge of the distribution of a species commonly reported in fishery landings of the Eastern Pacific.

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. 

First record and range extension of the Galapagos slipper lobster, Scyllarides astori (Decapoda, Scyllaridae) in the central Pacific coast of Mexico mainland

Zootaxa ◽  
2017 ◽  
Vol 4277 (2) ◽  
pp. 285
Author(s):  
ALBERTO CARBAJAL-LÓPEZ ◽  
ALEJANDRO ROSENDE-PEREIRO ◽  
ANTONIO CORGOS
Keyword(s):  
Gulf Of California ◽  
New Record ◽  
Pacific Coast ◽  
First Record ◽  
Range Extension ◽  
Central Pacific ◽  
Western Mexico ◽  
Galapagos Archipelago ◽  
Revillagigedo Archipelago ◽  
First Time

The Galapagos slipper lobster Scyllarides astori was found for the first time off western Mexico mainland. A male and two female specimens were collected in south Jalisco and north Colima. This represents a new record from central Pacific coast of Mexico and a range extension of 700 km southwards, as the species was previously reported from the Gulf of California, 780 km eastwards from Revillagigedo Archipelago and 2400 km northwestwards from Isla del Coco and Galapagos Archipelago. 

scholarly journals A BIBLIOGRAPHIC AND FIELD RECORD CHRONOLOGY OF SHARKS AT CABO PULMO NATIONAL PARK, GULF OF CALIFORNIA

2016 ◽  
Vol 31 (1) ◽  
pp. 55
Author(s):  
Hector Reyes -Bonilla ◽  
Arturo Ayala -Bocos ◽  
Francisco Javier Fernández -Rivera Melo ◽  
Ronald Zepeta -Vilchis ◽  
Andrea Asúnsolo-Rivera ◽  
...  
Keyword(s):  
Gulf Of California ◽  
National Park ◽  
Sphyrna Lewini

Cronología de tiburones del Parque Nacional Cabo Pulmo, Golfo de California; registros bibliográficos y de campo El arrecife de Cabo Pulmo en el suroeste del Golfo de California, México (23° 26´ N, 109° 25´ W), es considerado una de las áreas protegidas más exitosas del Pacífico americano, ya que durante este siglo han habido aumentos en abundancia y biomasa de peces carnívoros residentes (pargos, cabrillas, jureles, tiburones, etc.). Ello se debe al régimen de no pesca y el buen estado de conservación que le permiten mantener niveles altos de productividad primaria y secundaria. El aumento en el flujo de materia y energía ha provocado la llegada de especies de niveles tróficos altos como los tiburones, los cuales son más frecuentes y representan una atracción turística local. El objetivo del presente trabajo es presentar una cronología de la aparición de las distintas especies de tiburones en Cabo Pulmo, con base en bibliografia, trabajo de campo y consultas con residentes locales, guías de buceo y especialistas que han visitado la zona en los últimos 15 años. Los resultados muestran que en el arrecife de Cabo Pulmo se han registrado 11 especies de tiburones de 9 géneros y 6 familias; ocho de estas fueron anotadas en diversas fuentes bibliográficas; aquí se cita por primera vez la ocurrencia de tres más (Sphyrna lewini, Gynglymostoma cirratum y Carcharhinus longimanus). La llegada de estas especies a la zona arrecifal pudiera ser indicativo de un buen estado del ecosistema local, por ello es de esperarse que los próximos años se registre un número mayor de especies de tiburones, o de su biomasa.

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>

Temporal and Spatial Abundance of Acanthaster cf. Solaris (Echinodermata: Asteroidea) in a National Park in the Gulf of California, Mexico: 2005–2016

2021 ◽  
Vol 74 (3) ◽  
Author(s):  
Jenny Carolina Rodríguez-Villalobos ◽  
Carlos Hernández-Carreón ◽  
Héctor Reyes-Bonilla ◽  
Bárbara Rojas-Montiel ◽  
Amy Hudson Weaver
Keyword(s):  
Gulf Of California ◽  
National Park ◽  
Temporal And Spatial

Coral colonies in the eastern tropical Pacific: predation by Acanthaster cf. solaris

2018 ◽  
Vol 24 (4) ◽  
pp. 419
Author(s):  
J. C. Rodríguez-Vilalobos ◽  
A. Ayala-Bocos
Keyword(s):  
Gulf Of California ◽  
National Park ◽  
Threshold Value ◽  
Tropical Pacific ◽  
Scleractinian Corals ◽  
Historical Records ◽  
Eastern Tropical Pacific

The crown of thorns (CoTS; Acanthaster cf. solaris) have not been reported as an actual threat to reefs in the Gulf of California; however, in the Espiritu Santo Archipelago National Park, we have evidenced massive predation over scleractinian corals. Its abundance is now over outbreaks threshold value and it is higher than historical records

Distribution and morphological variation of Synalpheus superus Abele and Kim, 1989 and notes on the distribution of S. fritzmuelleri Coutière, 1909 (Decapoda: Caridea: Alpheidae)

Zootaxa ◽  
2010 ◽  
Vol 2505 (1) ◽  
pp. 65
Author(s):  
MARGARITA HERMOSO-SALAZAR ◽  
VIVIANNE SOLÍS-WEISS
Keyword(s):  
Morphological Variation ◽  
Gulf Of California ◽  
Eastern Pacific ◽  
Single Specimen ◽  
Northern Limit ◽  
Snapping Shrimp ◽  
Intraspecific Morphological Variation

A significant intraspecific morphological variation was observed in the eastern Pacific snapping shrimp Synalpheus superus Kim & Abele, 1989, especially in the proportions of some cephalotoracic appendages. The northern limit of the distribution of S. superus is expanded from Panama to Guerrero, Mexico. We also consider that Synalpheus fritzmuelleriCoutière, 1909 is most probably not an amphi-American species. Its former status as such was due to taxonomic misinterpretations by Hernández Aguilera et al. (1986) and probably by Coutière (1909) himself, although his questionable record of a single specimen of S. fritzmuelleri from the Gulf of California could not be verified, because the specimen could not be located and may be lost.

scholarly journals Marine biodiversity from zero to a thousand meters at Clipperton Atoll (Île de La Passion), Tropical Eastern Pacific

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7279 ◽  
Author(s):  
Alan M. Friedlander ◽  
Jonatha Giddens ◽  
Enric Ballesteros ◽  
Shmulik Blum ◽  
Eric K. Brown ◽  
...  
Keyword(s):  
Marine Reserve ◽  
Oceanic Islands ◽  
Eastern Pacific ◽  
Taxonomic Resolution ◽  
Marine Biodiversity ◽  
Tropical Eastern Pacific ◽  
High Turnover ◽  
Depth Effect ◽  
Black Corals ◽  
Manned Submersible

Clipperton Atoll (Île de La Passion) is the only atoll in the Tropical Eastern Pacific (TEP) ecoregion and, owing to its isolation, possesses several endemic species and is likely an important stepping stone between Oceania, the remainder of the TEP, including other oceanic islands and the west coast of Central America. We describe the biodiversity at this remote atoll from shallow water to depths greater than one thousand meters using a mixture of technologies (SCUBA, stereo baited remote underwater video stations, manned submersible, and deep-sea drop cameras). Seventy-four unique taxa of invertebrates were identified during our expedition. The majority (70%) of these taxa were confined to the top 400 m and consisted mostly of sessile organisms. Decapod crustaceans and black corals (Antipatharia) had the broadest depth ranges, 100–1,497 m and 58–967 m, respectively. Decapods were correlated with the deepest depths, while hard corals were correlated with the shallow depths. There were 96 different fish taxa from 41 families and 15 orders, of which 70% were restricted to depths <200 m. While there was a decreasing trend in richness for both fish and invertebrate taxa with depth, these declines were not linear across the depth gradient. Instead, peaks in richness at ∼200 m and ∼750 m coincided with high turnover due to the appearance of new taxa and disappearance of other taxa within the community and is likely associated with the strong oxygen minimum zone that occurs within the region. The overall depth effect was stronger for fishes compared with invertebrates, which may reflect ecological preferences or differences in taxonomic resolution among groups. The creation of a no-take marine reserve 12 nautical miles around the atoll in 2016 will help conserve this unique and relatively intact ecosystem, which possesses high predator abundance.

scholarly journals A Numerical Investigation of Wet and Dry Onset Modes in the North American Monsoon Core Region. Part I: A Regional Mechanism for Interannual Variability

2012 ◽  
Vol 25 (11) ◽  
pp. 3953-3969 ◽  
Author(s):  
Cuauhtémoc Turrent ◽  
Tereza Cavazos
Keyword(s):  
Interannual Variability ◽  
Diurnal Cycle ◽  
North American ◽  
Gulf Of California ◽  
Deep Convection ◽  
Core Region ◽  
Eastern Pacific ◽  
North American Monsoon ◽  
The Core ◽  
The North

In this study the results of two regional fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) simulations forced at their boundaries with low-pass-filtered North American Regional Reanalysis (NARR) composite fields from which synoptic-scale variability was removed are presented. The filtered NARR data are also assimilated into the inner domain through the use of field nudging. The purpose of this research is to investigate wet and dry onset modes in the core region of the North American monsoon (NAM). Key features of the NAM that are present in the NARR fields and assimilated into the regional simulations include the position of the midlevel anticyclone, low-level circulation over the Gulf of California, and moisture flux patterns into the core monsoon region, for which the eastern Pacific is the likely primary source of moisture. The model develops a robust diurnal cycle of deep convection over the peaks of the Sierra Madre Occidental (SMO) that results solely from its radiation scheme and internal dynamics, in spite of the field nudging. The wet onset mode is related to a regional land–sea thermal contrast (LSTC) that is ~2°C higher than in the dry mode, and is further characterized by a northward-displaced midlevel anticyclone, a stronger surface pressure gradient along the Gulf of California, larger mean moisture fluxes into the core region from the eastern Pacific, a stronger diurnal cycle of deep convection, and the more northward distribution of precipitation along the axis of the SMO. A proposed regional LSTC mechanism for NAM onset interannual variability is consistent with the differences between both onset modes.

Revision of theAlpheus cristulifronsspecies complex (Crustacea: Decapoda: Alpheidae), with description of a new species from the tropical eastern Atlantic

2008 ◽  
Vol 88 (3) ◽  
pp. 543-562 ◽  
Author(s):  
Arthur Anker ◽  
Carla Hurt ◽  
Nancy Knowlton
Keyword(s):  
Gulf Of California ◽  
Molecular Data ◽  
Sensu Stricto ◽  
Eastern Pacific ◽  
Gulf Of Guinea ◽  
Western Atlantic ◽  
Sister Clade ◽  
The Caribbean ◽  
Colour Patterns ◽  
A New Species

The taxonomy of the snapping shrimpAlpheus cristulifronsRathbun, 1900, previously reported from the eastern Pacific and western and eastern Atlantic, is reviewed based on molecular data (COI), morphology and colour patterns. Three species are recognized in theA. cristulifronsspecies complex.Alpheus cristulifrons sensu strictois restricted to the western Atlantic, ranging from Florida and the Caribbean Sea to southern Brazil. The eastern PacificA. cristulifrons sensuKim & Abele, 1988 corresponds toA. utriensisRamos & Von Prahl, 1989, ranging from the Gulf of California to Colombia; this species can be separated fromA. cristulifronsby the absence of balaeniceps setae on the male minor chela and the presence of bands on the antennular and antennal flagella. The eastern AtlanticA. cristulifronssensuCrosnier & Forest, 1966 is described asA. xanthocarpussp. nov. based on recently collected material from the island of São Tomé in the Gulf of Guinea; this species differs fromA. cristulifronsby the posteriorly more extending rostral carina and the presence of conspicuous yellow spots on the carpus and chela of the second pereiopod. Molecular data suggest thatA. utriensisis the eastern Pacific sister clade to the amphi-Atlntic clade that includesA. cristulifronsandA. xanthocarpussp. nov.

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