scholarly journals Description and distribution of Nemacystus howei (W.R. Taylor) Kylin (Chordariaceae) from the northern coast of the Yucatán peninsula

2020 ◽  
Vol 99 (1) ◽  
pp. 161-168
Author(s):  
Ileana Ortegón-Aznar ◽  
Ana M. Suárez ◽  
María del Carmen Galindo-de Santiago ◽  
Michael J. Wynne
Keyword(s):  
Sea Water ◽  
Yucatan Peninsula ◽  
Atlantic Coast ◽  
Morphological Characteristics ◽  
Small Mass ◽  
North Coast ◽  
Northern Coast ◽  
Yucatán Peninsula ◽  
Dry And Rainy Seasons ◽  
Light Brown Color

Background: There are few studies about Nemacystus on the Atlantic coast, and N. howei has been reported only once for Mexico; that record, however, did not provide a description of this species. Question: What are the morphological characteristics of Nemacystus howei and its distribution on the Yucatan coast? Species study: Macroalgae, Phaeophyceae, Nemacystus howei. Study site and year of study: North coast of Yucatán Peninsula of Mexico. Dry and rainy seasons from 2017 to 2019. Methods: Sampling was carried out at five localities, at 5 and 10 m depths, with scuba equipment. Specimens were preserved in diluted formalin in sea water; silica gel and dried-pressed vouchers are housed at the UADY Results: Six samples were collected at the five localities. Each one contains a small mass of filamentous of specimens of Nemacystus howei, that were found only during dry season, at both depths sampled. This alga has a thallus of an entangled filamentous mass of cylindrical, mucilaginous axes, of a light brown color. Younger branches have a solid central axis. Branching is abundant. The main, older axes are hollow. The assimilatory filaments are branched a few times, producing uniseriate colorless hairs and with plurilocular sporangia arising from the base. Nemacystus howei is easily confused with Cladosiphon occidentalis Kylin due to their similar morphology, branching pattern, and size. Conclusion: The significant morphological similarities between these species as well as the paucity of specific works on the Phaeophyceae of the Yucatan Peninsula may explain why Nemacystus howei had not been previously reported.

Redescription of Orthopristis ruber and Orthopristis scapularis (Haemulidae: Perciformes), with a hybridization zone off the Atlantic coast of South America

Zootaxa ◽  
2019 ◽  
Vol 4576 (1) ◽  
pp. 109 ◽  
Author(s):  
ALEXANDRE PIRES MARCENIUK ◽  
RODRIGO ANTUNES CAIRES ◽  
LEONARDO MACHADO ◽  
NAJILA NOLIE CATARINE DANTAS CERQUEIRA ◽  
RAYLA ROBERTA M. DE S. SERRA ◽  
...  
Keyword(s):  
South America ◽  
Nuclear Dna ◽  
Atlantic Coast ◽  
Morphological Characteristics ◽  
Distinct Species ◽  
Valid Species ◽  
Brazilian Coast ◽  
Northern Coast ◽  
Western Atlantic ◽  
Coloration Patterns

The genus Orthopristis includes seven valid species, three from the western Atlantic and five from eastern Pacific, while the available identification guides and taxonomic keys incorrectly recognize Orthopristis ruber as the only valid species found on the Atlantic coast of South America. Efforts to expand the inventory of fish species from the northern coast of Brazil led to the identification of two distinct species of Orthopristis from Atlantic South America, based on the analysis of coloration patterns and meristic data, as well as DNA. In the present study, the limits of Orthopristis ruber are reviewed, while Orthopristis scapularis is recognized as a valid species for the northern and northeastern coasts of South America. Based on intermediate morphological characteristics and nuclear DNA markers, a hybrid zone was identified off the state of Espírito Santo, on the eastern Brazilian coast. Additionally, considerations are made on the diversity and biogeography of the coastal marine and estuarine fishes found on the Brazilian coast. 

Environmental drivers of decadal change of a mangrove forest in the North coast of the Yucatan peninsula, Mexico

2016 ◽  
Vol 21 (1) ◽  
pp. 167-175 ◽  
Author(s):  
Rodolfo Rioja-Nieto ◽  
Eric Barrera-Falcón ◽  
Edgar Torres-Irineo ◽  
Gabriela Mendoza-González ◽  
Angela P. Cuervo-Robayo
Keyword(s):  
Mangrove Forest ◽  
Yucatan Peninsula ◽  
Environmental Drivers ◽  
North Coast ◽  
Decadal Change ◽  
The North ◽  
Yucatán Peninsula

scholarly journals Reproductive biology of the southern pufferfish, Sphoeroides nephelus (Actinopterygii: Tetraodontiformes: Tetraodontidae), in the northern coast off the Yucatan Peninsula, Mexico

2019 ◽  
Vol 49 (2) ◽  
pp. 133-146
Author(s):  
Jorge Peniche Perez ◽  
Carlos Gonzalez Salas ◽  
Harold Villegas Hernández ◽  
Raul Diaz Gamboa ◽  
Alfonso Aguilar Perera ◽  
...  
Keyword(s):  
Reproductive Biology ◽  
Yucatan Peninsula ◽  
Northern Coast ◽  
Yucatán Peninsula

Updated checklist and identification key of benthic tanaidaceans (Crustacea: Peracarida) of the sublittoral zone of the northern Yucatan Peninsula, Mexico

Zootaxa ◽  
2019 ◽  
Vol 4711 (1) ◽  
pp. 51-76
Author(s):  
MÓNICA MARIEL ABARCA-ÁVILA ◽  
MARÍA TERESA HERRERA-DORANTES ◽  
IGNACIO WINFIELD ◽  
PEDRO-LUIS ARDISSON
Keyword(s):  
Gulf Of Mexico ◽  
Geographic Distribution ◽  
New Records ◽  
Yucatan Peninsula ◽  
Identification Key ◽  
North Coast ◽  
The North ◽  
Yucatán Peninsula ◽  
Sublittoral Zone ◽  
Southern Gulf Of Mexico

A taxonomic checklist of sublittoral tanaidaceans from the north coast of the Yucatan Peninsula, southern Gulf of Mexico, is presented in this study; it includes notes on geographic distribution, habitat, and an identification key. The genus Cacoheterotanais and the species Cacoheterotanais rogerbamberi, Mesokalliapseudes macsweenyi, Pagurotanais largoensis, Parakonarus juliae, and Psammokalliapseudes granulosus have their known distribution range within the Gulf of Mexico expanded, and are considered new records; this increases the number of tanaidacean species to 23 for the southeastern Gulf, and to 87 for the entire Gulf of Mexico. 

Length-weight relationships of three fish species collected by recreational fishing in the northern coast of Yucatan Peninsula, Mexico

2017 ◽  
Vol 33 (6) ◽  
pp. 1249-1250 ◽  
Author(s):  
G. Poot-López ◽  
R. Díaz-Gamboa ◽  
C. González-Salas ◽  
S. Guillén-Hernández
Keyword(s):  
Fish Species ◽  
Yucatan Peninsula ◽  
Recreational Fishing ◽  
Northern Coast ◽  
Yucatán Peninsula
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