Revisiting the diversity and distribution of the ophiuroids (Echinodermata: Ophiuroidea) from Peru

Zootaxa ◽  
2020 ◽  
Vol 4766 (4) ◽  
pp. 539-556
Author(s):  
REBECA GRANJA FERNÁNDEZ ◽  
YURI HOOKER
Keyword(s):  
Spatial Distribution ◽  
New Records ◽  
Transitional Zone ◽  
Eastern Pacific ◽  
Distribution Analysis ◽  
Deep Zone ◽  
Tropical Eastern Pacific ◽  
Southeastern Pacific ◽  
Warm Temperate ◽  
Pacific Area

While the Ophiuroidea of Peruvian waters have long been studied, there exists inconsistencies regarding taxonomy and spatial distribution records. Based on literature review and museum records, we provide an updated checklist of the ophiuroids accompanied by the first geographical distribution analysis. Peruvian waters host 36 species of Ophiuroidea (three doubtful), yet 15 previous records of species are considered invalid for the area. We recorded five new records of species for Peru: Amphiodia oerstedi, Diopederma daniana, Ophiocomella alexandri, Ophiolepis crassa, and Ophiophthalmus normani. Peruvian maritime area is divided into four areas: The Tropical Eastern Pacific area where 16 species of ophiuroids occur, the Transition Zone with 13 species, the Warm Temperate Southeastern Pacific with nine species, and the Deep Zone with 14 species. We found significant differences in species composition among areas (except among the Eastern Pacific and the Transitional Zone), and each of them is represented by particular species. According to the rarefaction curve, the inventory of ophiuroids for the country is not yet complete; therefore, we suggest performing more expeditions along the Peruvian waters focusing mainly on the deep zones which remain relatively unexplored to date. 

New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific

Zootaxa ◽  
2016 ◽  
Vol 4184 (3) ◽  
pp. 401 ◽  
Author(s):  
J. ROLANDO BASTIDA-ZAVALA ◽  
ALONDRA SOFÍA RODRÍGUEZ BUELNA ◽  
JESÚS ANGEL DE LEÓN-GONZÁLEZ ◽  
KARLA ANDREA CAMACHO-CRUZ ◽  
ISABEL CARMONA
Keyword(s):  
New Records ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific

New records of decapod species from Malpelo Island, tropical eastern Pacific

2015 ◽  
Vol 46 (3) ◽  
pp. 699-702 ◽  
Author(s):  
Daniel Valencia-Giraldo ◽  
Juan F. Lazarus ◽  
Edgardo Londoño-Cruz
Keyword(s):  
New Records ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Malpelo Island

scholarly journals Temporal–Spatial Distribution of Thin Moist Layers in the Midtroposphere over the Tropical Eastern Pacific

2009 ◽  
Vol 22 (19) ◽  
pp. 5102-5114
Author(s):  
Shigenori Otsuka ◽  
Shigeo Yoden
Keyword(s):  
Spatial Distribution ◽  
Annual Variation ◽  
Intertropical Convergence Zone ◽  
Eastern Pacific ◽  
Boreal Summer ◽  
Boreal Winter ◽  
Tropical Eastern Pacific ◽  
Local Maxima ◽  
The North ◽  
The Vertical Distribution

Abstract The temporal–spatial distribution of thin moist layers in the midtroposphere over the tropical eastern Pacific is studied by data analyses of radiosonde soundings and downscaling numerical experiments with a regional model. Radiosonde soundings at San Cristóbal, Galápagos, show frequent existence of thin moist layers between 2 and 10 km in altitude, with a local minimum at 7–8 km. The downscaling experiments with global objective analyses are completed for 2005–06, September and December of 1999–2004, and March of 2000–04. The vertical distribution of thin moist layers has three local maxima at 5, 10, and 16 km, where bimodality of the frequency distribution of water vapor is evident. Between 4 and 7 km, an annual variation is dominant in the occurrence ratio of thin moist layers, which tend to appear in nonconvective regions. In boreal winter, the layers appear to the north of the intertropical convergence zone (ITCZ), whereas in boreal summer the layers appear in the equator-side of the ITCZ. Interannual variations of the appearance of thin moist layers are also studied in 1999–2006, based on the experiments for particular months (March, September, and December). The occurrence ratio is generally high in December and March and low in September. In La Niña years, the annual variation is smaller than that in El Niño years; the occurrence ratio is higher in boreal summer to the south of the ITCZ.

Littoral Maeridae and Melitidae (Amphipoda: Gammaridea) from the Gulf of Tehuantepec, Mexico

Zootaxa ◽  
2010 ◽  
Vol 2623 (1) ◽  
pp. 1 ◽  
Author(s):  
MARÍA DEL SOCORRO GARCÍA-MADRIGAL
Keyword(s):  
New Species ◽  
Gulf Of California ◽  
New Records ◽  
Galapagos Islands ◽  
Eastern Pacific ◽  
Galápagos Islands ◽  
Tropical Eastern Pacific ◽  
The North ◽  
The Pacific ◽  
Gulf Of Tehuantepec

In the Tropical Eastern Pacific region, the gammaridean amphipods of the families Maeridae and Melitidae are represented by 28 species and 11 genera; the genus Elasmopus is the richest, with 13 species. The examination of approximately 3,250 specimens resulted in 12 new records from the Gulf of Tehuantepec, belonging to four genera, Elasmopus, Maera, Quadrimaera and Melita. All species are illustrated and described. Seven new species are described as: Elasmopus bastidai n. sp., Elasmopus karlae n. sp., Elasmopus lecroyae n. sp., Elasmopus marcelae n. sp., Elasmopus oaxaquensis n. sp., Maera umarae n. sp., and Melita bousfieldi n. sp. With these new species the genus Elasmopus from the Tropical Eastern Pacific is increased to 18 species that corroborates the hypothesis of Barnard (1979) “on the Pacific there are (sic) a mark of speciation of genus Elasmopus”. In addition, there are five new records from the Gulf of Tehuantepec: three species of Elasmopus and two of Quadrimaera. Also, the range distribution of Elasmopus temori Barnard and E. zoanthidea Barnard, is increased to the north from the Galapagos Islands to the Gulf of Tehuantepec; for E. tubar Barnard, Quadrimaera chinarra Barnard, and Q. reishi Barnard, there are new intermediate records between the Gulf of California and the Galapagos Islands. With the exception of the species of Quadrimaera, all known species represent the second record in the region after their first descriptions.

scholarly journals First records and two new species of sipunculans (Sipuncula) from the Southern Mexican Pacific

2021 ◽  
Vol 740 ◽  
pp. 77-117
Author(s):  
Itzahí Silva-Morales ◽  
Julio D. Gómez-Vásquez
Keyword(s):  
New Species ◽  
Species Composition ◽  
New Records ◽  
Identification Key ◽  
Eastern Pacific ◽  
Nominal Species ◽  
Tropical Eastern Pacific ◽  
Mexican Pacific ◽  
Two New Species

Sipunculans are a poorly studied group in the Tropical Eastern Pacific. For the Southern Mexican Pacific (SMP) there is only one record of a sipunculan species. The main objective of this work was to determine the species composition of the phylum Sipuncula present in the SMP. The study area covered three Mexican states: Guerrero, Oaxaca and Chiapas; specimens from 28 localities were examined from both intertidal and subtidal zones. A total of 551 specimens were reviewed, from which 11 species were identified. Five of them have previously been recorded in the Tropical Eastern Pacific (TEP): Apionsoma (A.) hespera comb. nov., A. (Edmondsius) pectinatum, Aspidosiphon (A.) elegans, Phascolosoma (P.) puntarenae and Themiste (T.) hennahi; four species are similar to nominal species: Sipunculus (S.) cf. polymyotus, Siphonosoma cf. vastum, Siphonosoma cf. cumanense and Phascolosoma (P.) cf. perlucens; and two new species are described: Aspidosiphon (Paraspidosiphon) cutleri sp. nov. and Aspidosiphon (Paraspidosiphon) pastori sp. nov. A checklist and an identification key for all sipunculan species from the TEP are presented. The checklist includes 53 taxa, 25 of which are questionable records. This work generated 11 new records of sipunculans in the SMP and five new records in the TEP.

scholarly journals New records of Demospongiae (Porifera) from Reserva Marina El Pelado (Santa Elena, Ecuador), with description of Tedania (Tedania) ecuadoriensis sp. nov.

ZooKeys ◽  
2021 ◽  
Vol 1011 ◽  
pp. 101-120
Author(s):  
Karla B. Jaramillo ◽  
Báslavi Cóndor-Luján ◽  
Belinda Longakit ◽  
Jenny Rodriguez ◽  
Olivier P. Thomas ◽  
...  
Keyword(s):  
Protected Area ◽  
New Records ◽  
Marine Protected Area ◽  
Eastern Pacific ◽  
Shallow Waters ◽  
Tropical Eastern Pacific ◽  
Taxonomic Descriptions ◽  
Sponge Diversity ◽  
First Time ◽  
Santa Elena

The first taxonomic descriptions of the sponge diversity at El Pelado Marine Protected Area in the province of Santa Elena, Ecuador is reported. Tedania (Tedania) ecuadoriensis Jaramillo & Hajdu, sp. nov. is described from its shallow waters. In addition, Callyspongia (Callyspongia) aff. californica (sensuCruz-Barraza and Carballo 2008; nonsensuDickinson 1945) and Cliona aff. euryphylle are reported for the first time. The former species is likely distributed over 4,000 km along the Tropical Eastern Pacific, whereas the latter might be an example of a trans-isthmian lineage. An amended diagnosis for Callyspongia (Callyspongia) and an updated identification key for the subgenera of Callyspongia are provided.

New records of Calcareous sponges (Porifera, Calcarea) from the Chilean coast

Zootaxa ◽  
2009 ◽  
Vol 2072 (1) ◽  
pp. 1-30 ◽  
Author(s):  
FERNANDA AZEVEDO ◽  
EDUARDO HAJDU ◽  
PHILIPPE WILLENZ ◽  
MICHELLE KLAUTAU
Keyword(s):  
Antarctic Peninsula ◽  
New Records ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Western Atlantic ◽  
Chilean Coast ◽  
South Eastern ◽  
Calcareous Sponges ◽  
Sponge Diversity ◽  
The Antarctic

The present study is part of a large international effort to inventory the markedly underestimated sponge diversity in the coastal south-eastern Pacific, and figure its biotic affinities with neighbouring faunas in the Antarctic peninsula, in the south-western Atlantic and in the tropical eastern Pacific. Collections were assembled between 2003 and 2007 from 20 Chilean localities, at depths varying from 8 to 35 m. Thirty nine specimens of calcareous sponges were collected totalling 7 species which are described here, 6 being new to science. Four species belong to Calcinea (Clathrina antofagastensis sp. nov., Clathrina fjordica sp. nov., Guancha ramosa sp. nov., and Leucaltis nuda sp. nov.), and 3 to Calcaronea (Leucosolenia australis, Sycon huinayense sp. nov., and Sycettusa chilensis sp. nov.).

Chrysopetalids (Phyllodocida: Chrysopetalidae) from the southern Mexican Pacific, including a new species

Zootaxa ◽  
2018 ◽  
Vol 4521 (1) ◽  
pp. 61 ◽  
Author(s):  
CHRISTOPHER CRUZ-GÓMEZ ◽  
J. ROLANDO BASTIDA-ZAVALA
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
New Records ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Mexican Pacific ◽  
The Pacific ◽  
The Family ◽  
First Time ◽  
A New Species

The family Chrysopetalidae has been poorly studied from the Pacific coast of Mexico compared to other families. Specifically from the southern Mexican Pacific, only two species of the family have been recorded in previous studies, Chrysopetalum occidentale and Paleanotus chrysolepis. In this study 311 specimens were revised, and nine species, belonging to six genera were found. Eight of these species are new records from the southern Mexican Pacific coast: Arichlidon watsonae n. sp., Bhawania cf. goodei, Chrysopetalum elegantoides, C. maculata, Hyalopale sp., Paleaequor psamathe, Paleanotus bellis and P. purpurea. A new species is also described, Arichlidon watsonae n. sp., which is characterized by the curved tips blades of the falcigers and their small and ovoid palps. Additionally, the genera Arichlidon and Hyalopale are recorded by first time from the Tropical Eastern Pacific. 

scholarly journals Hyperiid amphipods distribution between the central coast and oceanic islands off Chile, southeastern Pacific

2021 ◽  
Vol 49 (1) ◽  
pp. 169-181
Author(s):  
Christian Véliz ◽  
Armando Mujica ◽  
María Luisa Nava
Keyword(s):  
Spatial Distribution ◽  
Central Region ◽  
New Records ◽  
Oceanic Islands ◽  
Central Coast ◽  
Composition Distribution ◽  
Subtropical Water ◽  
Southeastern Pacific ◽  
Bodies Of Water ◽  
Subantarctic Water

The composition, distribution, and abundance of hyperiid amphipods collected in the oceanographic cruise between the central coast and oceanic islands of Chile in the southeastern Pacific were analyzed. Thirty-four genera and 54 species were identified, grouped into two infraorders and 16 families. The presence of Hemityphis tenuimanus Claus 1879, and Laxohyperia vespuliformis Vinogradov & Volkov 1982, expands its geographical distribution as new records for the southeastern Pacific. According to the founded species, spatial distribution, and the bodies of water present in the study area, Chile’s central region would be a transition zone for species originating from the Magellan Province (Subantarctic water) and the Peru-Chile Province (Subtropical water).

A new species of the genus Psammogorgia (Cnidaria: Anthozoa: Octocorallia) from the Hannibal Bank in Pacific Panama

2020 ◽  
Vol 96 (1) ◽  
pp. 169-180
Author(s):  
Odalisca Breedy ◽  
Hector M Guzman ◽  
Catalina Murillo ◽  
Sergio Vargas
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
New Records ◽  
Eastern Pacific ◽  
Molecular Phylogenetic Analysis ◽  
Tropical Eastern Pacific ◽  
Molecular Phylogenetic ◽  
A New Species

The octocoral faunas occurring at mesophotic depths (from 40 to 150 m) have been relatively unexplored. Recent expeditions to Hannibal Bank, a guyot seamount off Pacific Panama, have yielded new octocoral species and new records for the tropical eastern Pacific. Herein, we describe a new species for the genus Psammogorgia Verrill, 1868a, Psammogorgia pax sp. nov., characterized by having a whitish flabellate colony with orange polyp apertures, slightly raised and sparse calyces, and colorless coenenchymal sclerites (which are mostly spindles and large wart-clubs). A preliminary molecular phylogenetic analysis supports the differences between the new species with other congener and related taxa.

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