scholarly journals Charophyceae, Charales, Characeae, Chara drouetii R.D. Wood, 1965: first record from the state of Quintana Roo, Mexico

Check List ◽  
2011 ◽  
Vol 7 (1) ◽  
pp. 021 ◽  
Author(s):  
Mitchell S. Alix ◽  
Robin W. Scribailo
Keyword(s):  
Aquatic Macrophytes ◽  
Yucatan Peninsula ◽  
First Record ◽  
The State ◽  
Type Locality ◽  
Quintana Roo ◽  
Morphometric Data ◽  
Yucatán Peninsula

Chara drouetii R.D. Wood, 1965 was recently collected during floristic surveys of aquatic macrophytes in the Yucatán Peninsula, Mexico. This discovery represents the first documented record for this species from the state of Quintana Roo, Mexico. This report extends the range of Chara drouetii by approximately 300 km east of the nearest known occurrence of this species in Mexico and approximately 6,000 km northwest of the type locality (municipality of Fortaleza, state of Ceará, Brazil). Comparative morphometric data on diagnostic taxonomic characters of this species are presented.

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.

scholarly journals First record of Vanilla labellopapillata (Orchidaceae: Vanilloideae) in the state of Amazonas, Brazil

2020 ◽  
Vol 50 (3) ◽  
pp. 260-262
Author(s):  
Dayse Raiane Passos KRAHL ◽  
Amauri Herbert KRAHL ◽  
Guy CHIRON ◽  
Mário Henrique TERRA-ARAÚJO
Keyword(s):  
First Record ◽  
The State ◽  
Type Locality ◽  
Ecological Aspects ◽  
New Finding

ABSTRACT The first record of Vanilla labellopapillata is presented for the state of Amazonas, Brazil, in the region of Manaus, now the western limit of the species, which was previously known only from the type locality in the state of Pará. A brief description is provided and taxonomic and ecological aspects of the species are discussed in the light of this new finding.

scholarly journals Amphibia, Anura, Hylodidae, Megaelosia apuana Pombal, Prado and Canedo, 2003: distribution extension, new state record and geographic distribution map

Check List ◽  
2011 ◽  
Vol 7 (4) ◽  
pp. 394 ◽  
Author(s):  
Patrícia Da Silva Santos ◽  
Emanuel Teixeira da Silva ◽  
Bruno Henrique Barbosa Felhberg ◽  
Marcus Thadeu Teixeira Santos ◽  
Paulo Christiano De Anchietta Garcia
Keyword(s):  
Geographic Distribution ◽  
First Record ◽  
Minas Gerais ◽  
The State ◽  
Type Locality ◽  
Southeastern Brazil ◽  
Distribution Map

In this study we report the first record of the giant torrent frog Megaelosia apuana in the state of Minas Gerais, southeastern Brazil. The finding of this species at Reserva Particular do Patrimônio Natural (RPPN) Mata do Sossego, municipality of Simonésia, east of Minas Gerais extends its geographic distribution by 120 km from the type locality, and 45 km northwest from its westernmost known record. A geographic distribution map is presented. 

scholarly journals Amphibia, Anura, Leptodactylidae, Leptodactylus cupreus Caramaschi, Feio and São-Pedro, 2008: distribution extension

Check List ◽  
2010 ◽  
Vol 6 (4) ◽  
pp. 481 ◽  
Author(s):  
Juliana Peres ◽  
José Eduardo Simon ◽  
Denise S. Nascimento ◽  
Renato Neves Feio
Keyword(s):  
Geographic Distribution ◽  
First Record ◽  
The State ◽  
Type Locality ◽  
Southeastern Brazil ◽  
Altitudinal Distribution ◽  
Espírito Santo ◽  
Espirito Santo ◽  
Inferior Limit

We provide the first record of Leptodactylus cupreus out of its type locality, as well the first record of this species in the State of Espírito Santo, southeastern Brazil. The record of Leptodactylus cupreus from municipality Santa Teresa extends in approximately 220 km to the northeastern of its geographic distribution and establishes the inferior limit of 800 m in its altitudinal distribution in the Serra da Mantiqueira.

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 Comparison of small mammal prevalence of Leishmania (Leishmania) mexicana in five foci of cutaneous leishmaniasis in the State of Campeche, Mexico

2009 ◽  
Vol 51 (2) ◽  
pp. 87-94 ◽  
Author(s):  
N.R. Van Wynsberghe ◽  
S.B. Canto-Lara ◽  
E.I. Sosa-Bibiano ◽  
N.A. Rivero-Cárdenas ◽  
F.J. Andrade-Narváez
Keyword(s):  
Cutaneous Leishmaniasis ◽  
Yucatan Peninsula ◽  
The State ◽  
Control Measures ◽  
Effective Control ◽  
Leishmania Mexicana ◽  
Wild Rodents ◽  
Terrestrial Mammals ◽  
Yucatán Peninsula ◽  
Reservoir Species

In the Yucatan Peninsula of Mexico, 95% of the human cases of Cutaneous Leishmaniasis are caused by Leishmania (Leishmania) mexicana with an incidence rate of 5.08 per 100,000 inhabitants. Transmission is limited to the winter months (November to March). One study on wild rodents has incriminated Ototylomys phyllotis and Peromyscus yucatanicus as primary reservoirs of L. (L.) mexicana in the focus of La Libertad, Campeche. In the present study, the prevalence of both infection and disease caused by L. (L.) mexicana in small terrestrial mammals were documented during five transmission seasons (1994-2004) in five foci of Leishmaniasis in the state of Campeche. Foci separated by only 100 km, with similar relative abundances of small mammals, were found to differ significantly in their prevalence of both symptoms and infection. Transmission rates and reservoir species seemed to change in space as well as in time which limited the implementation of effective control measures of the disease even in a small endemic area such as the south of the Yucatan 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.

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