scholarly journals Abundancia del gato montés (Lynx rufus escuinapae J. A. Allen, 1903) en el Parque Nacional el Cimatario, Querétaro, México

2015 ◽  
Vol 31 (1) ◽  
Author(s):  
Carlos A. López-González ◽  
Daniel Ávila Aguilar ◽  
María Fernanda Cruz-Torres
Keyword(s):  
Conservation Status ◽  
Lynx Rufus ◽  
Central Mexico ◽  
Fragmented Landscapes ◽  
Minimum Density

Bobcat conservation status in central Mexico remains unclear. In many localities it is possible that bobcat populations are declining, so it is very important to estimate the densities of this species. In this note we report an abundance of 3 ± 0.78 bobcats and a minimum density of 0.17 ind/km2 at the Parque Nacional El Cimatario, Querétaro. Information on the species is limited and this data are needed to improve our knowledge in fragmented landscapes.

scholarly journals Carnivores (Mammalia) from areas of Nearctic–Neotropical transition in Puebla, central Mexico: presence, distribution, and conservation

Check List ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 1833 ◽  
Author(s):  
Osvaldo Eric Ramírez-Bravo ◽  
Lorna Hernandez-Santin
Keyword(s):  
Habitat Loss ◽  
Conservation Status ◽  
The State ◽  
Lynx Rufus ◽  
Risk Category ◽  
Central Mexico ◽  
Leopardus Pardalis ◽  
Lethal Control ◽  
Hunting Pressure ◽  
Carnivore Species

The Nearctic and Neotropical realms converge in central Mexico, where many areas have not been adequately characterized. Our objective was to revise the distribution and conservation status of carnivores in the state of Puebla, central Mexico. Between September 2008 and January 2011, we conducted interviews and fieldwork on seven previously selected areas. We complemented our data with bibliographical research. We obtained 733 records for 21 species, representing 63% of the carnivores reported for Mexico. We expanded known ranges of three species: Ocelot (Leopardus pardalis), Bobcat (Lynx rufus), and Tropical Ringtail (Bassariscus sumichastrii). Fifty percent of the carnivore species we recorded in Puebla are considered under some risk category. We found that carnivores in our study area are vulnerable to hunting pressure, human-carnivore conflicts that result in lethal control practices, and extensive habitat loss.

Beaucarnea olsonii (Ruscaceae), a new species of ponytail palm from southwestern Puebla, Mexico

Phytotaxa ◽  
2016 ◽  
Vol 286 (1) ◽  
pp. 13
Author(s):  
VANESSA ROJAS-PIÑA ◽  
LEONARDO O. ALVARADO-CÁRDENAS
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Conservation Status ◽  
Deciduous Forests ◽  
Central Mexico ◽  
Distribution Map ◽  
Southern Central ◽  
Tropical Deciduous Forests ◽  
A New Species

Beaucarnea olsonii is described and illustrated from tropical deciduous forests of SW Puebla, Mexico. The new species can be distinguished from other Beaucarnea species by its massively swollen base that abruptly tapers into slender branches, by its conspicuously long stigma, and by its pedicel articulation that occurs at 2/3 of the length of the pedicel below the flower. With this new addition, the total number of endemic species of Beaucarnea for Mexico increases to 10, making this country the greatest center of diversification and endemism for the genus. We also provide a distribution map and a conservation status recommendation for the new species, as well as a key to the Beaucarnea species of southern central Mexico.

scholarly journals Temporary freshwater wetlands floristics in central Mexico highlands

2018 ◽  
Vol 96 (1) ◽  
pp. 138 ◽  
Author(s):  
Tatiana Lobato-de Magalhães ◽  
Mahinda Martínez
Keyword(s):  
Species Richness ◽  
Life Form ◽  
Conservation Status ◽  
Life Forms ◽  
Freshwater Wetlands ◽  
Central Mexico ◽  
Anthropogenic Pressure ◽  
Temporary Wetlands ◽  
First Time ◽  
Economic Use

<p><strong>Background: </strong>Mexico has a high diversity of aquatic and subaquatic plants that occur between 1,000 and 2,500 m of elevation, although a larger proportion of aquatic plants is concentrated at lower altitudes. Temporary wetlands harbor close to 73 % of the aquatic species in Mexico. These systems are under a strong anthropogenic pressure and suffer constant degradation.</p><p><strong>Questions:</strong> i) How many species grow in highland temporary wetlands? ii) Are they floristically similar? iii) Is there a latitudinal pattern of species richness?</p><p><strong>Studied groups: </strong>Charophyta, Pteridophyta, Angiosperms.</p><p><strong>Study site and years of study:</strong> Central Mexico (39 wetlands) from 2015 to 2016.<strong></strong></p><p><strong>Methods: </strong>We collected in 39 temporary wetlands for two years. We made a presence/absence list of species per locality, and calculated floristic similarities and correlations between wetlands. We include data characterizing life form, plant use, and conservation status.</p><p><strong>Results:</strong> We found 126 species belonging to 80 genera and 38 families. The richest families were Cyperaceae, Asteraceae, and Poaceae. As to genera, <em>Eleocharis</em>, <em>Cyperus</em>, and <em>Juncus </em>had more species. Species with the widest distributions were <em>Persicaria mexicana</em>, <em>Marsilea mollis</em>, <em>Luziola fluitans</em>, <em>Heteranthera peduncularis</em>, and <em>Nymphoides fallax</em>.  We found five different life forms – all herbaceous, including 27 threatened species, 24 species with economic use, 48 endemic species, and 19 cosmopolitan species. In addition, we found 20 species recorded for the first time in some states included in our study, and two species of <em>Eleocharis</em> that might represent undescribed species. The richest wetland harbors 40 species, the poorest has only five. Wetlands were comparable to each other in species composition, and species richness increases towards the south.</p><p><strong>Conclusions:</strong> Temporary wetlands harbor a high floristic diversity and are similar to each other. Lower latitudes host higher numbers of species.</p>

scholarly journals First occurrence of <i>Panthera atrox</i> (Felidae, Pantherinae) in the Mexican state of Hidalgo and a review of the record of felids from the Pleistocene of Mexico

Fossil Record ◽  
2016 ◽  
Vol 19 (2) ◽  
pp. 131-141 ◽  
Author(s):  
Victor Manuel Bravo-Cuevas ◽  
Jaime Priego-Vargas ◽  
Miguel Ángel Cabral-Perdomo ◽  
Marco Antonio Pineda Maldonado
Keyword(s):  
North America ◽  
Late Pleistocene ◽  
Puma Concolor ◽  
Lynx Rufus ◽  
Central Mexico ◽  
Diagnostic Features ◽  
Large Herbivores ◽  
Lower Canine ◽  
Articulating Surface ◽  
Panthera Atrox

Abstract. Panthera atrox was a common large-sized cat in North America during the late Pleistocene. An isolated lower canine and a fifth metacarpal bone referable to this species were recovered from fluvial Quaternary deposits that outcrop in southeastern Hidalgo, central Mexico. Associated fossil material belonging to Bison indicates a Rancholabrean North American Land Mammal Age; the age assignment is corroborated by the presence of P. atrox. A comparative study with selected specimens of Panthera and Smilodon indicates that the Hidalgoan sample shares the following diagnostic features with P. atrox: a large, robust, and non-strongly curved lower canine; a large and relatively slender fifth metacarpal with a well-developed projection on the palmar side at the proximal end, narrow articulating surface for the unciform; a narrow notch on the articulating surface for the fourth metacarpal; and a diaphysis that at the middle is oval in cross section. The record supplements the evidence of P. atrox in central Mexico and represents the first reported occurrence of this cat species in the state of Hidalgo. By the same token, the known geographic distribution of P. atrox in the Mexican territory suggests that it was relatively common in temperate areas of central Mexico between 19 and 24° N at an altitudinal range from 1500 to 2250 m a.s.l. The large size (mean body mass of 300 kg) and hypercarnivorous adaptations of the American lion suggest it was the top predator of the mammalian community recorded at southeastern Hidalgo, displacing other members of the carnivore guild at the mesopredator level, such as the dire wolf (Canis dirus ), which has been also reported in the area. The high diversity of large herbivores recorded at southeastern Hidalgo, which in turn could represent potential prey of P. atrox, suggests that some areas that now are part of central Mexico were suitable hunting sites for this large-sized cat. A review of the Pleistocene record of Felidae from Mexico revealed that it encompasses 87.5 and 73.3 % of generic and specific diversity known for North America, respectively, including seven genera (Felis, Miracinonyx, Panthera, Puma, Lynx, Leopardus, and Smilodon) and 11 species (Felis rexroadensis, Miracinonyx inexpectatus, Panthera atrox, Panthera onca, Puma concolor, Puma yagouaroundi, Lynx rufus, Leopardus pardalis, Leopardus wiedii, Smilodon fatalis, and Smilodon gracilis). The majority of these taxa have been reported from numerous late Pleistocene localities; in particular, Panthera atrox was relatively common and widely distributed across the Mexican territory.

Landscape attributes determine bobcat (Lynx rufus escuinapae) presence in Central Mexico

Mammalia ◽  
2017 ◽  
Vol 81 (1) ◽  
Author(s):  
María Eugenia Espinosa-Flores ◽  
Carlos A. López-González
Keyword(s):  
Patch Size ◽  
Camera Traps ◽  
Lynx Rufus ◽  
Tree Cover ◽  
Central Mexico ◽  
Anthropogenic Pressure ◽  
Landscape Characteristics ◽  
Breeding Populations ◽  
Minimum Patch Size

AbstractCentral Mexico has experienced a decline of its natural vegetation due to anthropogenic pressure. In 12 sites in the southeastern portion of Guanajuato, we deployed camera traps and analyzed landscape characteristics. We recorded the presence of bobcats in four sites. Their presence was explained by a combination of patch size and tree cover. Because bobcats are sensitive to fragmentation and habitat loss, it is essential to increase sampling and conservation efforts to define the minimum patch size and maximum area of human development that can limit their long-term persistence and the establishment of breeding populations.

scholarly journals Echeandia cholulensis (Asparagaceae), a new species from central Mexico

2021 ◽  
Author(s):  
Aarón Rodríguez ◽  
Juan Pablo Ortiz Brunel
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Volcanic Belt ◽  
Field Work ◽  
Iucn Red List ◽  
Morphological Description ◽  
Central Mexico ◽  
New Taxon ◽  
Area Of Occupancy ◽  
A New Species

Background and Aims: The genus Echeandia (Asparagaceae) characterizes the Mexican geophyte flora. The group is exclusive of the Americas and includes 85 species. In Mexico, there are 74 species, of which 63 are endemic; however, the species richness is concentrated in the Mexican Transition Zone, including the Transmexican Volcanic Belt (TMVB). Here, we name and describe a new species of Echeandia found along the TMVB in the states of Puebla and Tlaxcala.Methods: Field work and herbarium revision led us to discover a new species of Echeandia. The morphological description and illustration were based on eight voucher specimens plus living plants from two populations. Moreover, we compared the morphology of the new taxon with that of E. michoacensis and E. robusta. Lastly, we assessed its conservation status by calculating its extent of occurrence (EOO) and its area of occupancy (AOO), using the GeoCAT tool and based on the IUCN Red List categories and criteria.Key results: Echeandia cholulensis is a new species from Mexico. The new taxon includes robust plants characterized by root-thickenings distant from the corm; lanceolate, undulate, and glaucous leaves; ascending flowers with white tepals; clavate and muricate filaments, and free anthers with longitudinal dehiscence. Until now, it is known from three populations in central Mexico in the states of Puebla and Tlaxcala.Conclusions: Along the TMVB, volcanism has created topographic and climatic variation favoring speciation and persistence. The discovery and morphological description of Echeandia cholulensis exemplifies this observation. Furthermore, botanical exploration and herbaria revisions might discover new species that would increase the great plant diversity of the TMVB.

scholarly journals DEPREDACIÓN DE UN CINCUATE (Pituophis lineaticollis) Y UNA ARDILLA ARBORÍCOLA (Sciurus aerogaster) POR UN GATO MONTÉS (Lynx rufus escuinapae) EN EL PARQUE ESTATAL HERMENEGILDO GALEANA, ESTADO DE MÉXICO

2018 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Leopoldo Islas Flores ◽  
Gerardo Ceballos
Keyword(s):  
Temperate Forest ◽  
Camera Traps ◽  
Lynx Rufus ◽  
Central Mexico ◽  
Gray Squirrel

ResumenRegistramos aquí la depredación del lince rojo (Lynx rufus escuinapae) en la serpiente gopher (Pituophis lineaticollis) y la ardilla gris (Sciurus aureogaster) en un bosque templado en el centro de México. La localidad se encuentra en el Parque Estatal Hermenegildo Galeana, Tenancingo, Estado de México, utilizando cámaras trampa.Palabras Clave: Depredación, gato montés, foto-trampeo, Estado de México, Lynx rufus escuinapae, Pituophis lineaticollis, Sciurus aureogaster.AbstractWe record here the predation of bobcat (Lynx rufus escuinapae) on gopher snake (Pituophis lineaticollis) and gray squirrel (Sciurus aureogaster) in a temperate forest in Central Mexico. The locality is at the Hermenegildo Galeana State Park, Tenancingo, State of México using camera-traps.Key works: Predation, bobcat, camera-traps, State of Mexico, Lynx rufus escuinapae, Pituophis lineaticollis, Sciurus aureogaster.

Ultrastructure of the effect of T-514 obtained from Karwinskia humboldtiana on assembly and integrity of yeast's peroxisomes

1991 ◽  
Vol 49 ◽  
pp. 136-137
Author(s):  
J. Sepulveda-Saavedra ◽  
I. Vander-Klei ◽  
M. Venhuis ◽  
Y. Piñeyro-Lopez
Keyword(s):  
Culture Conditions ◽  
Toxic Effects ◽  
Candida Boidinii ◽  
Central Mexico ◽  
Poisonous Plant ◽  
Biological Behaviour ◽  
Enzyme Content ◽  
Fat Deposits ◽  
Yeast Model

Karwinskia humboldtiana is a poisonous plant that grows in semi desertic areas in north and central México. It produces several substances with different toxic effects. One of them designated T-514 damages severely the lung, kidney and liver, producing in the hepatoeyte large intracellular fat deposits and necrosis. Preliminary observations demonstrated that three is a decrease in the amount of peroxisomes in the hepatocytes of experimentally intoxicated rats and monkeys. To study the effect exerted by the T-514 on peroxisomes, a yeast model was selected, thus, three species: Saccha romices cerevisiae, Ilansenula polymorpha and Candida boidinii were used, because there is information concerning their peroxisome's morphology, enzyme content, biological behaviour under different culture conditions and biogenesis.

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