The genus Reithrodontomys consists of a group of rodents characterized by a high genetic and chromosomal variability. This genus consists of two subgenera: Aporodon, whose species have highly conservative karyotypes, and Reithrodontomys which, on the contrary, shows a marked chromosomal variability suggesting that a process of megakaryotipic evolution is taking...
Cultural Importance (CI) of plants represents the rol that they play, or the meaning that they have within a particular locality. “Pitayas” are important not only as a local food resource, but also as an economic purchase in the region known as Mixteca Poblana. About 25 species receive the same...
La contaminación atmosférica en la Cuenca del Valle de México es un problema que afecta a sus ecosistemas, incluyendo a las poblaciones de ratones que habitan en bosques aledaños. Debido a esto, en el presente trabajo, se documentó el efecto fisiológico causado por los contaminantes ambientales (CA) sobre dos especies...
The morphometric study is a tool for delimitation of species, however in Dinoflagellates is complicated and demand a big labour under microscopy. Works previous about Ornithocercus and Prorocentrum genus, both they are part of the “Biología y Filogenia Molecular de Dinoflagelados del Pacifico Mexicano” proyect, who is funded by the...
Anoda cristata es una Malvácea de amplia distribución en México, utilizada como recurso alimenticio en la zona centro del país, siendo las hojas anchas, suaves y poco pubescentes el rasgo de interés. En la región de la Montaña de Guerrero (Copanatoyac y Tlapa) se encuentran poblaciones ruderales de A. cristata...
En esta investigación se estudió la dinámica anual del embolismo anatómico y el fisiológico, el estatus hídrico, el ángulo de plegamiento foliar y del gradiente de presiones del continuo suelo-planta-atmósfera en individuos adultos de Alvaradoa amorphoides Liebm. (Picramniaceae), localizados en una selva baja caducifolia, en la localidad de Valle de...
Nematodes life-cycle consists of four larval stages (L1, L2, L3, and L4) and a fifth, adult stage (L5). During this development four molt processes occur. Nevertheless, it seems that this feature is not shared by all nematodes. To date, three larval stages and the adult stage are known for the...
"La Cienega Grande de Xochimilco" is part of the Ecological preservation zone “Ejidos de Xochimilco y San Gregorio Atlapulco”. It’s considered as a regulation lagoon for flood control. It’s an important area for birds associated to aquatic environments, but there are no actions for wildlife conservation. Education is one of...
In the present study, water quality and the concentration of polycyclic aromatic hydrocarbons (PAHs) in sediments of reef ecosystems from Mahahual to Xahuayxol Ensenada, and in the coastal lagoon Santa Rosa, Quintana Roo, Mexico in two tourist season, to propose a Water Quality Index Marine and necessary mitigation measures to...
This paper presents the results of an ethnobotanical survey on the knowledge of medicinal plants used for controlling diabetes type 2 (non-insulin-dependent diabetes mellitus) in the rural community of Agua del Perro in the municipality of Acapulco, Guerrero, Mexico, a small town that has 3 types of vegetal communities in...