New species of Pseudonereis Kinberg, 1865 (Polychaeta: Nereididae) from the Atlantic Ocean, and a review of paragnath morphology and methodology

Zootaxa ◽  
2018 ◽  
Vol 4471 (2) ◽  
pp. 245 ◽  
Author(s):  
VÍCTOR M. CONDE-VELA
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Caribbean Sea ◽  
Distinct Species ◽  
Eastern Pacific ◽  
Type Locality ◽  
Gulf Of Guinea ◽  
Undescribed Species ◽  
The Caribbean

Pseudonereis gallapagensis Kinberg, 1865 and P. variegata (Grube & Kröyer in Grube, 1858) are the only two species of this genus commonly recorded along Atlantic American coasts, but their type localities are in the Eastern Pacific, and their morphology differs. Two new Pseudonereis species are described from Eastern Mexico: P. brunnea sp. n. from the Gulf of Mexico, and P. citrina sp. n. from the Caribbean Sea, previously confused with P. gallapagensis. In order to facilitate comparisons, descriptions based on specimens from near the type locality for P. gallapagensis (Peru and Ecuador), and topotypes for P. variegata (Valparaiso, Chile), are included. Based on these comparisons and current descriptions, the synonymies of Nereis ferox Hansen, 1882 described from Brazil with P. variegata, and of Pseudonereis formosa Kinberg, 1865 described from Hawaii with P. gallapagensis, are rejected. Consequently, both are regarded as distinct species and revised diagnoses are provided for them. The record of P. ferox from the Gulf of Guinea proved to be an undescribed species, and is herein described as P. fauveli sp. n. The number of paragnath rows in nereidid pharynx areas VII–VIII has been interpreted in several ways, leading to confusion; an alternative method to determine the number of bands and rows is proposed. The midventral region, the division of areas VII–VIII in furrow and ridge regions, and the description of the arrangement based on the pattern of paragnaths in such regions, are proposed. Further, the terms shield-shaped and pointed (P-bars) bars are redefined, and a new term, crescent-shaped bars, is proposed for paragnaths in the areas VI in some Pseudonereis and Perinereis species. A key for all Pseudonereis species is also included. 

scholarly journals Taxonomic Transfer of the Red Algal Genus Gloiosaccion to Chrysymenia (Rhodymeniaceae, Rhodymeniales), Including the Description of a New Species, Chrysymenia pseudoventricosa, for the Gulf of Mexico

Phytotaxa ◽  
2016 ◽  
Vol 243 (1) ◽  
pp. 54 ◽  
Author(s):  
William E Schmidt ◽  
Carlos Frederico D. Gurgel ◽  
Suzanne L. Fredericq
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Gulf Of Mexico ◽  
Caribbean Sea ◽  
Distinct Species ◽  
Lsu Rdna ◽  
Rdna Sequences ◽  
Red Algal ◽  
Algal Genus ◽  
A New Species

Gloiosaccion Harvey, with type G. brownii (Rhodymeniaceae, Rhodymeniales), is a red algal genus characterized by the presence of large, hollow and saccate vesicle-shaped thalli arising from small solid axes. Whereas Gloiosaccion has traditionally been viewed as being closely related to Botryocladia (Agardh) Kylin, a multi-marker phylogenetic analysis based on chloroplast-encoded rbcL and UPA and nuclear LSU rDNA sequences instead places Gloiosaccion brownii and G. pumila in the Chrysymenia clade that includes the generitype C. ventricosa (Lamouroux) J. Agardh. Gloiosaccion is reduced to synonymy with Chrysymenia J. Agardh, a taxonomic move first advocated by De Toni in 1900. In addition to C. brownii (Harvey) De Toni, “Gloiosaccion” brownii var. firmum Harvey and “G.” pumilum J. Agardh are recognized as the distinct species Chrysymenia coriacea comb. et stat. nov. and C. pumila (J. Agardh) Weber-van Bosse, respectively. A new species, C. pseudoventricosa sp. nov. is proposed to accommodate specimens going under the name C. ventricosa (J.V. Lamouroux) J. Agardh from the Gulf of Mexico and Caribbean Sea.

New and rare micro-pagurid hermit crabs (Crustacea: Anomura: Paguridae) from the Caribbean Sea and Gulf of Mexico

Zootaxa ◽  
2020 ◽  
Vol 4722 (4) ◽  
pp. 301-325
Author(s):  
RAFAEL LEMAITRE
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Florida Keys ◽  
Caribbean Sea ◽  
Hermit Crabs ◽  
Caribbean Region ◽  
Bocas Del Toro ◽  
The Family ◽  
Two New Species ◽  
The Caribbean

Six species of hermit crabs of the family Paguridae from the Caribbean Sea and Gulf of Mexico region, including two new species, Anisopagurus asteriscus sp. nov. and Pagurus alarius sp. nov., are documented. The two new species are described, and recognition characters summarized for the four previously known species. Reports of the latter, Nematopaguroides fagei Forest & de Saint Laurent, 1968, N. karukera Lemaitre, Felder & Poupin, 2017, Paguriscus robustus Lemaitre, Felder & Poupin, 2017, and Pylopaguridium markhami McLaughlin & Lemaitre, 2001, represent range extensions for all four species. Color photographs are included for four of the species, as well as remarks on their taxonomy and distributions. All six species included can be categorized as micro-pagurids (with shield length rarely exceeding 2.0 mm), and were collected from cryptic reef habitats in Bocas del Toro, Panama; the French Antillean island of Guadeloupe; and the Gulf of Mexico coasts of Louisiana, Yucatán, and Florida Keys. The discovery of these new or rare species supports the conclusion of recent studies that the diversity of pagurids from the Caribbean region has yet to be fully realized. 

Gracilaria falconii sp. nov. (Gracilariales, Rhodophyta): a new species with flat axes from Venezuela

Phytotaxa ◽  
2017 ◽  
Vol 292 (3) ◽  
pp. 271 ◽  
Author(s):  
SONIA ARDITO M. ◽  
MARÍA LUISA NÚÑEZ-RESENDIZ ◽  
KURT M. DRECKMANN ◽  
ABEL SENTÍES
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Related Species ◽  
Caribbean Sea ◽  
Closely Related Species ◽  
The Caribbean ◽  
A New Species

Gracilaria falconii from Falcón, Venezuela, is described as a new species, based mainly on phylogenetic evidence. Morphologically, G. falconii is similar to G. mammillaris, a species previously reported from the Gulf of Mexico, the Caribbean Sea, Venezuela, and Brazil. Although G. falconii is morphologically different from phylogenetically closely related species, morphological boundaries between G. falconii and other flattened Gracilaria are not so clear.

scholarly journals NEW RECORDS OF THE DISTINCTIVE BENTHIC DINOFLAGELLATE GENUS Cabra (DINOPHYCEAE)

2015 ◽  
Vol 30 (1) ◽  
pp. 63
Author(s):  
F. Gómez ◽  
R. M. Lopes
Keyword(s):  
Atlantic Ocean ◽  
Light Microscopy ◽  
Mediterranean Sea ◽  
New Records ◽  
Morphological Variability ◽  
Caribbean Sea ◽  
Original Description ◽  
Undescribed Species ◽  
The Caribbean ◽  
First Time

The benthic dinoflagellate genus Cabra is reported for the first time in the Mediterranean Sea and the South Atlantic Ocean, with additional records in the Caribbean Sea and the eastern Asian coasts. Cabra aremorica is reported for the first time after the original description. However, these records should be considered cautiously because the distinction between Cabra aremorica and C. reticulata is difficult based on routine light microscopy observations. It is uncertain whether there is a high intraspecific morphological variability or several co-occurring undescribed species. Cabra levis, a species recently described, is reported for first time beyond the type locality. Nuevos registros del distintivo género de dinoflagelado bentónico Cabra (Dinophyceae) El dinoflagelado bentónico del géneroCabrase describe por primera vez en el Mar Mediterráneo y el Océano Atlántico Sur, con registros adicionales en el Mar Caribe y las costas orientales de Asia. Cabra aremorica se cita por primera vez después de la descripción original. Sin embargo, estos registros deben ser considerados con cautela porque la distinción entre Cabra aremorica y C. reticulata es difícil basándose solo en observaciones rutinarias de microscopía óptica. No está claro si existe una alta variabilidad morfológica intra-específica o si existen varias especies no descritas que coexisten. Cabra levis, una especie recientemente descrita, se describe por primera vez más allá de su localidad tipo.

Winds aloft over three water bodies influence spring stopover distributions of migrating birds along the Gulf of Mexico coast

The Auk ◽  
2021 ◽  
Author(s):  
Hannah L Clipp ◽  
Jeffrey J Buler ◽  
Jaclyn A Smolinsky ◽  
Kyle G Horton ◽  
Andrew Farnsworth ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Caribbean Sea ◽  
Radar Data ◽  
Water Bodies ◽  
Northern Gulf Of Mexico ◽  
The Caribbean ◽  
Migrating Birds ◽  
Spring Stopover ◽  
Mexico Coast

Abstract Migrating birds contend with dynamic wind conditions that ultimately influence most aspects of their migration, from broad-scale movements to individual decisions about where to rest and refuel. We used weather surveillance radar data to measure spring stopover distributions of northward migrating birds along the northern Gulf of Mexico coast and found a strong influence of winds over nonadjacent water bodies, the Caribbean Sea and Atlantic Ocean, along with the contiguous Gulf of Mexico. Specifically, we quantified the relative influence of meridional (north–south) and zonal (west–east) wind components over the 3 water bodies on weekly spring stopover densities along western, central, and eastern regions of the northern Gulf of Mexico coast. Winds over the Caribbean Sea and Atlantic Ocean were just as, or more, influential than winds over the Gulf of Mexico, with the highest stopover densities in the central and eastern regions of the coast following the fastest winds from the east over the Caribbean Sea. In contrast, stopover density along the western region of the coast was most influenced by winds over the Gulf of Mexico, with the highest densities following winds from the south. Our results elucidate the important role of wind conditions over multiple water bodies on region-wide stopover distributions and complement tracking data showing Nearctic–Neotropical birds flying nonstop from South America to the northern Gulf of Mexico coast. Smaller-bodied birds may be particularly sensitive to prevailing wind conditions during nonstop flights over water, with probable orientation and energetic consequences that shape subsequent terrestrial stopover distributions. In the future, the changing climate is likely to alter wind conditions associated with migration, so birds that employ nonstop over-water flight strategies may face growing challenges.

Redescriptions and taxonomic notes on species of the Synalpheus townsendi Coutiere, 1909 complex (Decapoda: Caridea: Alpheidae)

Zootaxa ◽  
2005 ◽  
Vol 1027 (1) ◽  
pp. 1 ◽  
Author(s):  
MARGARITA HERMOSO SALAZAR ◽  
MARY WICKSTEN ◽  
JUAN J. MORRONE
Keyword(s):  
Gulf Of Mexico ◽  
Gulf Of California ◽  
Species Complex ◽  
Distinct Species ◽  
Morphological Features ◽  
Eastern Pacific ◽  
Type Material ◽  
The Caribbean

We compared morphological features in 122 specimens of the Synalpheus townsendi species complex from the Caribbean, Gulf of Mexico and eastern Pacific. Our objectives were to examine the taxonomy of S. townsendi townsendi, S. t. mexicanus, S. t. brevispinis and S. t. peruvianus, which we felt have not been appropriately described and to reconsider their status. Based on examination of type material and different characters, we conclude that these taxa should be treated as distinct species, S. townsendi Coutière, 1909; S. mexicanus Coutière, 1909, S. brevispinis Coutière, 1909 and S. peruvianus Rathbun, 1910. We agree with Dardeau, 1986, that S. scaphoceris Coutière, 1910, is a distinct species. Specimens identified as S. townsendi productus Coutière, 1909, overlap in morphology with typical S. townsendi, and therefore are not considered to warrant designation as a separate taxon. Synalpheus mexicanus is not endemic to the Gulf of California.

A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf

Zootaxa ◽  
2019 ◽  
Vol 4612 (3) ◽  
pp. 301
Author(s):  
JANESSA C. COBB ◽  
JOHN M. LAWRENCE ◽  
JOAN C. HERRERA ◽  
DANIEL JANIES
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
The Body ◽  
Molecular Evidence ◽  
Undescribed Species ◽  
Florida Shelf ◽  
Oral Surface ◽  
The Caribbean ◽  
Major Radius ◽  
A New Species

A new species of Astropecten is described, supported by morphological and molecular evidence, from the Gulf of Mexico and the East Florida Shelf with most specimens from 30–60 m in depth. The new species, A. mcedwardi n. sp., is small, with a maximum major radius < 30 mm. Specimens of A. mcedwardi n. sp. have been found in five museums as an undescribed species or misidentified under several names. The spination of the oral surface most closely resembles that of Astropecten antillensis Lütken, 1859 from the Caribbean, but the body form is similar to that of Astropecten duplicatus Gray, 1840, which is found in the same geographic range. Examination of specimens from different collections indicates that the new species may overlap in distribution with A. antillensis along the East Florida Shelf.  Sequencing and phylogenetic analysis of two mitochondrial genes reveal that A. mcedwardi is closely related to A. antillensis but that its phylogenetic lineage is distinct from that of A. antillensis. 

Sabellariids (Annelida: Sedentaria: Sabellariidae) from shallow waters of the Gulf of Mexico and the Caribbean Sea, including three new species

Zootaxa ◽  
2021 ◽  
Vol 5048 (2) ◽  
pp. 191-214
Author(s):  
YESSICA CHÁVEZ-LÓPEZ
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Caribbean Sea ◽  
Tropical Atlantic ◽  
University Of Florida ◽  
History Museum ◽  
Reference Collection ◽  
The Caribbean ◽  
Three New Species ◽  
Scientific Collections

The Sabellariidae has been scarcely studied in the Gulf of Mexico and the Caribbean Sea, and there are 18 species recorded out of 140 species known in the world. This work aims to improve the knowledge of the sabellariids in the northwestern tropical Atlantic region, provide standardized descriptions, and generate taxonomic identification keys. Sabellariids from three scientific collections were revised: Reference Collection of Laboratorio de Poliquetos, El Colegio de la Frontera Sur (ECOSUR), Chetumal, Collection of Laboratorio de Biodiversidad y Cambio Climático, ECOSUR, Campeche and Invertebrate Zoology Collection of Florida Natural History Museum, University of Florida, Gainesville. Three new species are described: Idanthyrsus bastidai n. sp. and I. mikeli n. sp. from Venezuela, and Sabellaria salazari n. sp. from the Yucatán Peninsula. In addition, new records of S. floridensis Hartman, 1944, S. vulgaris Verrill, 1873, and Phragmatopoma caudata Krøyer in Mörch, 1863 are provided.  

scholarly journals The connectivity of eddy variability in the Caribbean Sea, the Gulf of Mexico, and the Atlantic Ocean

1999 ◽  
Vol 104 (C1) ◽  
pp. 1431-1453 ◽  
Author(s):  
Sylvia J. Murphy ◽  
Harley E. Hurlburt ◽  
James J. O'Brien
Keyword(s):  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Caribbean Sea ◽  
The Caribbean
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