scholarly journals Molecular assessment of the species of Gracilariaceae (Gracilariales, Rhodophyta) from the Yucatan Peninsula, Mexico, including two new records for the Mexican Atlantic

2022 ◽  
Vol 1 (1) ◽  
Author(s):  
Martha I. Vilchis ◽  
Kurt M. Dreckmann ◽  
Oscar E. Hernández ◽  
Carlos A. Palma Ortíz ◽  
María Luisa Núñez Resendiz ◽  
...  
Keyword(s):  
New Records ◽  
Yucatan Peninsula ◽  
Morphological Variability ◽  
Genetic Distances ◽  
Quintana Roo ◽  
Yucatán Peninsula ◽  
The Family ◽  
Gracilariopsis Tenuifrons ◽  
Molecular Assessment ◽  
Rbcl Sequences

Background. The Gracilariaceae is one of the most diverse and abundant families of marine red algae. Most species in this family exhibit high morphological variability and overlapping of characters. In the Yucatan Peninsula 30 species have been historically recorded, but the phylogenetic identity for many of them is still unknown. Questions: Is the current diversity of the family in the area overestimated? Studied species: Crassiphycus caudatus, C. corneus, C. usneoides, Gracilaria flabelliformis, G. hayi, G. cf isabellana, G. microcarpa, G. occidentalis, G. suzanneae, Gracilariopsis tenuifrons. Study site and dates: Campeche: km 33 carretera Champotón, Bahía Tortuga, Puente Xen Kan III, Punta Xen, Sabancuy, 2017, 2018; Yucatan: Puerto Sisal, Puerto Progreso, Puerto Chicxulub, Puerto Telchac, 2018; Quintana Roo: Playa 88, Xcalacoco, Punta Esmeralda, 2019. Methods. Phylogenetic analysis (with COI-5P and rbcL sequences), supported by DNA species delimitation methods, genetic distances and morphological comparisons, allowed us to molecularly identify the specimens collected. Results. The phylogenetic identity of 10 species of Gracilariaceae was confirmed, two of which are new records for the Mexican Atlantic: G. hayi and G. suzanneae. Conclusion. The study demonstrated that the molecular assessment has proved to be very useful for the diversity evaluation, thus, the future phylogenetic identifies for the rest of morphospecies recorded in the area will allow a better approximation of Gracilariaceae diversity species.

scholarly journals Lista de algas del Area de Protección Yum Balam, Quintana Roo, México

2015 ◽  
pp. 487-492
Author(s):  
M A Díaz-Martín ◽  
E Torres-Mejía ◽  
J Espinoza-Avalos
Keyword(s):  
Marine Algae ◽  
New Records ◽  
Yucatan Peninsula ◽  
Quintana Roo ◽  
Yucatán Peninsula

A checklist on benthic marine algae of the Yum Balam Reserve, Quintana Roo, México, is presented. All species are "new records" for the area because this is the first study for the locality, 122 taxa were identified, 55 are speCies. Df Rhodophyta, 44 Chlorophyta and nine Phaeophyta. Batophora oerstedii v. occidentalis, Halodictyon mirabile, Hypoglosslim involvens and Polysiphonia ramentacea are new records for the Yucatán Península

scholarly journals New records of anchialine fauna from the Yucatan Peninsula, Mexico

Check List ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 1505 ◽  
Author(s):  
Fernando Alvarez
Keyword(s):  
New Records ◽  
Yucatan Peninsula ◽  
First Record ◽  
Quintana Roo ◽  
Depth Data ◽  
Yucatán Peninsula ◽  
Alpheid Shrimp

New records for 17 species of crustaceans from anchialine systems in the Yucatan Peninsula, Mexico, are presented. The records come from explorations in Dzilam de Bravo, Yucatan, and from Puerto Aventuras and the Nohoch Nah Chich and Ox Bel Ha cave systems near Tulum in Quintana Roo, Mexico. For five of the 17 species dealt with here, the records presented constitute the second time those species are reported after their original descriptions. For the alpheid shrimp Yagerocaris cozumel, we present the first record of the species for continental Yucatan and for the atyid shrimp Jonga serrei, the second record from Mexico. Depth data are provided for all species.

Larval development of the stygobitic shrimp Creaseria morleyi (Creaser, 1936) (Decapoda: Caridea: Palaemonidae) from the Yucatán Peninsula, Mexico

2020 ◽  
Vol 40 (3) ◽  
pp. 221-229
Author(s):  
Sergio A Benítez ◽  
Thomas M Iliffe ◽  
Salvador Martínez ◽  
Juan Carlos Ojeda ◽  
José Luis Villalobos ◽  
...  
Keyword(s):  
Larval Development ◽  
Yucatan Peninsula ◽  
Juvenile Stage ◽  
Quintana Roo ◽  
Stages Of Development ◽  
Larval Stages ◽  
Yucatán Peninsula ◽  
Anchialine Caves

Abstract Although the larval development of epigean palaemonid shrimps has been studied extensively, only a few investigations deal with stygobitic species. We present the larval development of the cave-adapted Creaseria morleyi (Creaser, 1936) from anchialine caves in the Tulum area, Quintana Roo, Yucatán Peninsula, Mexico. Through the discovery of a series of larvae at different stages of development, we constructed a sequence extending through the juvenile stage. The larvae (41) were captured in plankton tows above the halocline at depths ranging between 11 and 15 m during eight surveys conducted between 2013 and 2016. Six larval stages and the first juvenile were identified; however, it is clear from the gradual modification of structures and appendages that more stages exist. The first larvae have a large quantity of vitellum and do not feed, since they have only rudimentary, and possibly non-functional, mouthparts. In the sixth stage and the juvenile, when the stages have no vitellum left, the mouthparts, chelae, and pleopods develop entirely. A comparison with other palaemonid shrimps suggests that C. morleyi has a greater affinity with those palaemonid species possessing extended larval development as is seen in species of MacrobrachiumSpence Bate, 1868.

Triacanthoneus akumalensis, a new species of alpheid shrimp (Crustacea: Caridea: Alpheidae) from an anchialine cave in Quintana Roo, Mexico

Zootaxa ◽  
2012 ◽  
Vol 3154 (1) ◽  
pp. 61 ◽  
Author(s):  
FERNANDO ALVAREZ ◽  
THOMAS M. ILIFFE ◽  
BRETT GONZALEZ ◽  
JOSÉ LUIS VILLALOBOS
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Quintana Roo ◽  
Yucatán Peninsula ◽  
Fourth Species ◽  
A New Species ◽  
Alpheid Shrimp

A new species of Triacanthoneus Anker, 2010 is described from an anchialine cave near Akumal, Quintana Roo, Mexico.Triacanthoneus akumalensis sp. nov., is the fourth species in the genus and can be distinguished from the previously de-scribed species by the position of the sharp lateral teeth on the carapace, the length and shape of the rostrum, the eyes beingcompletely concealed by the carapace, the dentition of the major chela fingers, and the shape of the telson. The presenceof a pleural process in the new species represents a new character for the genus. The description of T. akumalensis sp. nov. increases the number of caridean genera having representatives in the anchialine systems of the Yucatan Peninsula to 11.

Marine red algae (Rhodophyta) of economic use in the algal drifts from the Yucatan Peninsula, Mexico

Phytotaxa ◽  
2019 ◽  
Vol 387 (3) ◽  
pp. 219 ◽  
Author(s):  
MARÍA LUISA NÚÑEZ RESENDIZ ◽  
KURT M. DRECKMANN ◽  
ABEL SENTÍES ◽  
MICHAEL J. WYNNE ◽  
HILDA LEÓN TEJERA
Keyword(s):  
Red Algae ◽  
New Records ◽  
Yucatan Peninsula ◽  
First Record ◽  
Economic Importance ◽  
Raw Material ◽  
Western Atlantic ◽  
Yucatán Peninsula ◽  
Red Algal ◽  
Economic Use

Red algae are the most conspicuous component in algal drifts that periodically arrive on the coasts of the Yucatan Peninsula. Given the presence of agars and carrageenans in their cell wall and the synthesis of secondary metabolites that act as antitumors or antioxidants, most of these species are highly valued in the international market. However, in this region of Mexico they are not used but represent a problem of waste from beaches. Our aim was to determine the composition of marine red algae of economic use in the algal drifts of the Yucatan Peninsula, providing brief descriptions, photographs that facilitate their identification and possible explanations for their causes and routes of origin. 13 samplings were carried out at 14 sites, collecting fresh and complete thalli from which the species of economic importance were described. 24 species distributed in six orders and seven families were identified. The most abundant families for both the number of species and the amount of biomass were Gracilariaceae (10 species), Rhodomelaceae (6 species) and Solieriaceae (3 species). The localities with the greatest diversity and biomass were those belonging to Campeche: Sabancuy (11 species), Punta Xen (14 species), Tortuga Bay (13 species) and Playa Bonita (13 species). From the present study we contributed six new records endemic to Campeche, including the first record of the genus Codiophyllum for the Western Atlantic Ocean. Our data on diversity, biomass, periodicity and growth rates of red algal drifts allow us to suggest that the Campeche and Yucatan drifts are a sustainable source of raw material.

scholarly journals FIRST REPORT OF ANASTREPHA COMPRESSA IN MEXICO AND NEW RECORDS FOR OTHER ANASTREPHA SPECIES IN THE YUCATAN PENINSULA (DIPTERA: TEPHRITIDAE)

2002 ◽  
Vol 85 (2) ◽  
pp. 389-391 ◽  
Author(s):  
V. Hernández-Ortiz ◽  
P. Manrique-Saide ◽  
H. Delfín-González ◽  
L. Novelo-Rincón
Keyword(s):  
New Records ◽  
Yucatan Peninsula ◽  
First Report ◽  
Yucatán Peninsula

scholarly journals The relationship between forest fragmentation and the potential geographical distribution of psittacids (Psittaciformes: Psittacidae) in the Yucatan Peninsula, Mexico

2017 ◽  
Vol 65 (4) ◽  
pp. 1470
Author(s):  
Alexis Herminio Plasencia Vázquez ◽  
Griselda Escalona Segura ◽  
Yarelys Ferrer Sánchez
Keyword(s):  
Geographical Distribution ◽  
Forest Fragmentation ◽  
Potential Distribution ◽  
Yucatan Peninsula ◽  
Quintana Roo ◽  
Distribution Area ◽  
Yucatán Peninsula ◽  
Amazona Oratrix ◽  
The Mean ◽  
The Relationship

Parrots are a seriously threatened group because of the illegal pet trade, their habitat fragmentation and the destruction of tropical forests. This study aimed to determine the relationship between forest fragmentation and the geographic potential distribution of parrot species in the Yucatan Peninsula, Mexico. The research was carried out in the Mexican portion of the Yucatan Peninsula Biotic region, which includes the states of Campeche, Quintana Roo and Yucatan. We worked with the eight species of psittacids that inhabit the selected areas: Eupsittula nana, Amazona albifrons, Amazona xantholora, Amazona autumnalis, Pionus senilis, Pyrilia haematotis, Amazona oratrix and Amazona farinosa. For these species, we used the potential geographical distribution maps that were obtained through the Maximum Entropy algorithm, published in 2014. To measure the levels of forest fragmentation in the Peninsula, we employed the land use and vegetation maps from series IV (2007-2010) of the National Institute of Statistics and Geography. We calculated different landscape metrics at 100 sites randomly distributed within the predicted presence and absence areas for the species. Multivariate methods were used to shorten dimensionality in the analysis, as well as to explore the observed patterns. We did not find any pattern regarding the number of variables that contribute to the logistic regression models (LR) and the size of the parrots’ potential geographical distribution area within the Peninsula. For Pyrilia haematotis and Amazona oratrix, the fragmentation variables used did not seem to have any relationship with their potential geographical distribution in the Peninsula (intersection, Pr < 0.0001). Only for Eupsittula nana, Amazona xantholora and Pionus senilis, we found that the mean patch edge, the mean shape index and the mean perimeter-area ratio were important to determine their potential distribution patterns, respectively; and, in general, the variables indicated the preferences of these parrots to occupy larger habitat patches. Parrots must be given a special care and protection within the states of Campeche and Quintana Roo, since there are areas with high parrot diversity and are importantly affected by human activities. The best recommendation for managers and users of protected areas within the Yucatan Peninsula is that extensive areas of forest should be maintained in order to guarantee the suvival of psittacid populations.

scholarly journals First evidence of parasitation of a Bosmina (Cladocera) by a water mite larva in a karst sinkhole, in Quintana Roo (Yucatán Peninsula, México)

Acarologia ◽  
2019 ◽  
Vol 59 (1) ◽  
pp. 111-114
Author(s):  
Lucia Montes-Ortiz ◽  
Tom Goldschmidt ◽  
Manuel Elías-Gutiérrez
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Yucatan Peninsula ◽  
Quintana Roo ◽  
Water Mite ◽  
Yucatán Peninsula ◽  
Sem Imaging ◽  
Karst Sinkhole ◽  
First Time ◽  
Scanning Electron

For the first time a parasitic relationship between a water mite larva and a Cladocera is found and documented by scanning electron microscope (SEM) imaging. A Unionicolidae larva (cf. Unionicola) has been found attached to a Bosmina tubicen (Cladocera) collected in a karst sinkhole (cenote) in the southeast of the Yucatán Peninsula (México).

scholarly journals Field book - Yucatan Peninsula, Quintana Roo, Guatemala, and Belize, 1986-1987

1986 ◽  
Author(s):  
James Francis Lynch ◽  
Smithsonian Environmental Research Center
Keyword(s):  
Yucatan Peninsula ◽  
Quintana Roo ◽  
Yucatán Peninsula
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