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New species of Rhabdias sp. (Nematoda: Rhabdiasidae) parasite of Bufo occidentalis (Anura: Bufonidae) from Sierra Madre del Sur, Mexico.
Martinez-Salazar, E. A. - Leon-Regagnon, V.

Formato:	Artículo
Enlaces:	Rhabdias kuzmini n. sp., a parasite of the lungs of Bufo occidentalis, is described and illustrated. This Mexican taxon differs from the related species in the genus by the possession of 4 lips (2 subdorsal and 2 subventral) and 2…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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A new Rhabdochonid from the blue striped chub sectator ocyurus (Osteichthyes: Kyphosidae) in Chamela bay, Mexico.
Mejia-Madrid, H. - Perez-Ponce de Leon, G.

Formato:	Artículo
Enlaces:	Megachona chamelensis n. gen., n. sp. is described from the intestinal cecae of blue striped chub Sectator ocyurus (Kyphosidae, Perciformes), from Chamela Bay, Mexico. Megachona n. gen. most closely resembles Beaninema CaspetaMandujano, Moravec, and Salgado-Maldonado, 2001; Fellicola Petter and Køie,…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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A new species of Oochoristica (Eucestoda: Cyclophyllidea) parasite of Ctenosaura oaxacana (Reptilia: Iguanidae) from Mexico.
Guillen-Hernandez, S. - Garcia-Prieto, L. - Arizmendi-Espinosa, M. A.

Formato:	Artículo
Enlaces:	Oochoristica whitfieldi n. sp., parasitizing the intestine of the Oaxacan black iguana Ctenosaura oaxacana (Kohler and Hasbun, 2001), in Ruinas de Guiengola, Oaxaca state, Mexico, is described. The new species can be distinguished from all 4 congenera infecting Iguanidae in…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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Moussonia adpressipilosa (Gesneriaceae), a new solitary flowered species from Mexico.
Ramirez-Roa, A.

Formato:	Artículo
Enlaces:	Mousonnia adpressipilosa D. L Denham ex Ramirez-Roa (Gesneriaceae), a new solitary-flowered species from southern Mexico and Guatemala. is described and illustrated. It has been collected principally in Chiapas, Mexico, with only one location in the Sierra de los Cuchumatenes, Guatemala.…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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Presence of antigen-B from Taenia-solium cysticercus in other platyhelmithes.
Olivo, A - Plancarte, A - Flisser, A

Formato:	Article
Enlaces:	Descripción completa.
Fecha:	2011-12-07
Recurso:	Facultad de Ciencias - UNAM

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A new species belonging to the Vaejovis punctipalpi group (Scorpiones, Vaejovidae) from Southern Mexico.
Francke, O. F. - Gonzalez-Santillan, E.

Formato:	Artículo
Enlaces:	A new species, Vaejovis atenango, belonging to the V. punctipalpi group is described from southern Mexico; this group was previously only known from the North American deserts in the USA and northern Mexico. This geographically discontinuous distribution is similar to…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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A new species of Amyris (Rutaceae) from Baja California Sur, Mexico.
Rebman, J. P. - Chiang, F.

Formato:	Artículo
Enlaces:	Field exploration and floristic research have revealed another plant species endemic to the peninsula of Baja California, Mexico. A new shrubby species (Amyris certerae)from the Sierra Guadalupe and Sierra de la Giganta, Baja California Sur, is described here. Distribution, associated…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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A new species of Gochnatia (Asteraceae: Mutisieae) from the desert scrubland of the State of Hidalgo, Mexico.
Gonzalez-Medrano, F. - Villaseñor, J.L. - Medina, R.

Formato:	Artículo
Enlaces:	A new species, Gochnatia hiriartiana Medrano, Villaseñor & Medina (Asteraceae, tribe Mutisieae), of the desert scrubland of the state of Hidalgo, Mexico, is described. Its distinctive morphological traits are discussed and compared with the other Mexican species of the genus…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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A new species of Pachychernes (Pseudoscorpiones: Chernetidae) from Mexico associated with nests of Neotoma micropus (Rodentia, Muridae).
Villegas-Guzman, G. A. - Perez, T. M.

Formato:	Artículo
Enlaces:	The new species Pachychernes tamaulipensis is described from all freeliving stages collected in nests of the packrat, Neotoma micropus, in Tamaulipas, Mexico. This species is related to P. shelfordi, P. zehorum, P. attenuatus and P. baileyi; all of them form…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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10.

A new species of Pseudoeurycea (Caudata: Plethodontidae) from Northern Oaxaca, Mexico.
Canseco-Marquez, L. - Parra-Olea, G.

Formato:	Artículo
Enlaces:	We describe a new species of Pseudoeurycea from the northernmost high peak of the Sierra de Juárez, Oaxaca, México. This species belongs to the P. juarezi group, a monophyletic assemblage restricted to northern Oaxaca and comprising three species: P. juarezi,…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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11.

A new species of Sciurodendrium (Nematoda: Heligmonellidae) in Sciurus aureogaster (Rodentia: Sciuridae) from Morelos, Mexico.
Falcon-Ordaz, J - Lamonthe-Argumedo, R.

Formato:	Artículo
Enlaces:	Sciurodendrium bravohollisa e n,sp.(Heligrnone llidae) is described as an intestinal parasite of 2 squirrels. Sciurus aureogaster Cuvier,1829, collected from Los Robles, Municipio de Tlalnepantla, Morelos State, Mexico. The new species differs from all other congeners in possessing a very well…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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12.

A new species of the genus Hirstiella (Acari: Prostigmata: Pterygosomatidae) parasitic on Phyllodactylus bordai (Reptilia: Squamata: Gekkonidae) in Mexico.
Paredes-Leon, R. - Morales-Malacara, J. B.

Formato:	Artículo
Enlaces:	Hirstiella jimenezi new species is described from specimens found on the gecko Phyllodactylus bordai Taylor in the southern part of Mexico and also recorded from a single specimen of P. tuberculosus magnus Taylor. The female, male, deutonymph, and larva are…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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13.

Description of six new species of Amnestus Dallas (Hemiptera: Heteroptera: Cydnidae) from Mexico.
Mayorga, C. M. - Cervantes-Peredo, L.

Formato:	Artículo
Enlaces:	Six new species of Amnestus Dallas from the Mexican states of Campeche, Chiapas, Hidalgo, and Veracruz are described. Illustrations of adults and diagnostic characters of the head, prosternal carina, pronotum, legs, parameres, and methatoracic scent gland are provided. Distribution and…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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14.

New and poorly known species of the mexicanus group of the genus Vaejovis (Scorpiones: Vaejovidae) from Oaxaca, Mexico.
Santibañez-Lopez, C. E. - Francke, O. F.

Formato:	Artículo
Enlaces:	Four new species belonging to the mexicanus group of the genus Vaejovis C.L. Koch 1836 from Oaxaca, Mexico are described. The number of species of this group for the state is raised to seven. The males of V. franckei and…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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15.

Six new species of Leptoglossus guerin (Hemiptera: Heteroptera: Coreidae: Coreinae: Anisoscelini).
Brailovsky, H. - Barrera, E.

Formato:	Artículo
Enlaces:	Six new species of Leptoglossus Guerin from Brazil, Costa Rica, Mexico, Peru, and Venezuela are described. Diagnostic taxonomic characters of antennal segments, legs, male genital capsules, and dorsal views of some species are illustrated. Most of the species are placed…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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16.

The rectification of the type species of Acolhua distant with the description of a new species (Heteroptera: Rhyparochromidae).
Slater, J.A. - Brailovsky, H.

Formato:	Artículo
Enlaces:	The type species of Acolhua is discussed. The specimens considered to represent the type species Acolhua championi Distant by Slater & Brailovsky (1986) are shown to represent a previously undescribed species described as A. barrerai new species. The actual type…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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17.

A new capillariid (Nematoda) parasitizing Heterandria bimaculata (Heckel, 1848) (Poeciliidae) in Mexico.
Caspeta-Mandujano, J. M. - Salgado-Maldonado, G. - Vazquez, G.

Formato:	Artículo
Enlaces:	A new nematode species, Freitascapillaria moraveci n. sp., is described; it was obtained from specimens recovered from the gall bladder of the 2spot livebearer Heterandrá bimaculata (Heckel, 1848) from La Antigua River, State of Veracruz, Mexico. The new species is…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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18.

A new Cryptogonimid (Digenea) from the Mayan cichlid, Cichlasoma urophthalmus (Osteichthyes: Cichlidae), in several localities of the Yucatan Peninsula, Mexico.
Razo-Mendivil, U. - Rosas-Valdez, R. - Perez-Ponce de Leon, G.

Formato:	Artículo
Enlaces:	Oligogonotylus mayae n.sp. is described from the intestine of the Mayan cichlid Cichlasoma urophthalmus (Günther) in Ría Lagartos, Ría Celestún, and Estero Progreso, Yucatán State. This is the second species described for Oligogonotylus Watson, 1976, the other being O.manteri Watson,…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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19.

A new dicrocoeliid (Digenea: Dicrocoeliinae) parasite of rodents from Tlaxcala, Mexico.
Lamothe-Argumedo, R. - Falcon-Ordaz, J. - Garcia-Prieto, L. - Fernandez-Fernandez, J.

Formato:	Artículo
Enlaces:	Caballerolecythus ibunami n. gen., n. sp. is described from the intestine of 2 species of rodents (Liomys irroratus [Gray, 1868] and Peromyscus difficilis [Allen, 1891]) from Piñonal, El Carmen Tequexquitla, Tlaxcala state, Mexico. These specimens represent a new genus and…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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20.

A new species of arboreal salamander (Caudata: Plethodontidae: Pseudoeurycea) from the mountains of Oaxaca, Mexico.
Parra-Olea, G. - Garcia-Paris, M. - Hanken, J.

Formato:	Artículo
Enlaces:	Recent surveys of the plethodontid salamander fauna of Oaxaca, Mexico, disclosed the existence of a new, morphologically distinct arboreal species of the genus Pseudoeurycea. The new species, described here, is from the Sierra Mazateca in northern Oaxaca. Sequences of 1833…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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21.

A new species of Gnathostoma (Nematoda: Gnathostomatidae) in Procyon lotor hernandezii from Mexico.
Bertoni-Ruiz, F. - Garcia-Prieto, L. - Osorio-Sarabia, D.

Formato:	Artículo
Enlaces:	Gnathostoma lamothei n. sp., inhabiting the stomach of Procyon lotor hernandezii Wagler, 1831, in Tlacotalpan, Veracruz State, and Rio Sapo, Oaxaca, Mexico, is described. This new species differs from all other congeners by having the posterior half of the body…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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22.

A new species of Heteromyoxyuris (Nematoda: Oxyuridae), parasite of Perognathus flavus (Rodentia: Heteromyidae) from Mexico.
Garcia-Prieto, L. - Falcon-Ordaz, J. - Lira-Guerrero, G.

Formato:	Artículo
Enlaces:	Heteromyoxyuris otomii n. sp., which inhabits the intestinal caecum of Perognathus flavus (Heteromyidae), in Zaragoza, Hidalgo, Mexico, is described. This new species differs from the 2 other congeneric species in the morphology and length of lateral alae in males. Heteromyoxyuris…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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23.

A new species of Hysterothylacium (Nematoda: Anisakidae) parasite of Ariopsis guatemalensis (Osteichthyes: Ariidae) from Tres Palos lagoon, Mexico.
Gopar, M. L. - Osorio, D. - Garcia-Prieto, L.

Formato:	Artículo
Enlaces:	Hysterothylacium perezi; n. sp. is described from the intestine of the "cuatete" Ariopsis guatemalensis Giinther, 1864 (Osteichthyes: Ariidae),in Tres Palos,a coastal lagoon located in the Mexican Pacific basin.The new species differs from all other species of Hysterothylacium Wardand Magath ,…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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24.

A new species of leaf-toed gecko, genus Phyllodactylus (Squamata: Gekkota: Phyllodactylidae) from Guerrero.
Murphy, R. W. - Blair, C. - Mendez-de la Cruz, F. R.

Formato:	Artículo
Enlaces:	A new, miniaturized species of Phyllodactylus Gray from Guerrero, Mexico is described. The species appears to be the smallest American species of leaftoed gecko. The diploid karyotype consists of a graded series of 36 acrocentric and 2 subtelocentric chromosomes; the…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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25.

A new species of Neoheterospilus (Braconidae: Doryctinae) from Chamela, Jalisco, Mexico.
Martinez, J. J. - Zaldivar-Riveron, A.

Formato:	Artículo
Enlaces:	A new species of Neoheterospilus, N. chamelae n. sp., is described from the ChamelaCuixmala biosphere reserve in the Pacific coast of Jalisco, Mexico. This new species is placed within the subgenus Harpoheterospilus as it has an almost indistinct suture between…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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26.

A new species of Oochoristica (Eucestoda: Cyclophyllidea) parasite of Ctenosaura pectinata (Reptilia: Iguanidae) from Oaxaca, Mexico.
Arizmendi-Espinosa, M. A. - Garcia-Prieto, L. - Guillen-Hernandez, S.

Formato:	Artículo
Enlaces:	During January 2002, 3 specimens of an undescribed species of Oochoristica Lühe, 1898, were collected in Ctenosaura pectinata (Wiegmann, 1834) from Santa Mará Mixtequilla, Oaxaca, Mexico. Oochoristica leonregagnonae n. sp. differs from 71 of 82 species of the genus by…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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27.

A new species of Pelecitus (Filarioidea: Onchocercidae) from the endangered Tehuantepec jackrabbit Lepus flavigularis.
Jimenez-Ruiz, F. A. - Gardner, S. L. - Cervantes, F. A.

Formato:	Artículo
Enlaces:	Pelecitus meridionaleporinus n. sp. from the Tehuantepec jackrabbit is described. The new species differs from Pelecitus helicinus (Molin, 1860) in having delicate transverse striations, a salient vulva , and a readily apparent preesophageal ring; P. hellcinus has teardrop cellsaroundthe vulva,…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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28.

A new species of Spauligodon (Nemata: Oxyuridae) parasite of Cnemidophorus (Lacertilia: Teiidae) from Southern Mexico.
Jimenez-Ruiz, F. A. - Leon-Regagnon, V. - Campbell, J. A.

Formato:	Artículo
Enlaces:	A new species of Spauligodon collected from Cnemidophorus mexicanus and C. deppii is described in this study. The species is placed in Spauligodon because the caudal alae start at the level of the precloacal papillae and embed the adcloacal papillae.…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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29.

Heteroflorum: un nuevo genero del grupo Peltophorum (Leguminosae: Caesalpinioideae: Caesalpinieae), endemico para Mexico.
Sousa-Sanchez, M.

Formato:	Artículo
Enlaces:	A new monotypic arboreal and dioecious genus, endemic to Mexico, is described and illustrated: Heteroflorum, within the Leguminosae, Caesalpinioideae, Caesalpinieae, Peltophorum species group, including the new species H. sclerocarpum from the Balsas River basin and the Mexican coastal plains of…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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30.

New species of the genus Typhlatya Creaser, 1936 (Decapoda: Atyidae) from anchialine caves in Mexico, the Bahamas and Honduras.
Alvarez, F. - liffe, T. M. - Villalobos, J. L.

Formato:	Artículo
Enlaces:	Three new species of the genus Typhlatya from anchialine caves in Mexico (T. dzilamensis), the Bahamas (T. kakuki), and Honduras (T. utilaensis) are described. Typhlatya dzilamensis is the fourth species to be described from the Yucatan Peninsula, Mexico, and is…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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31.

Rhabdochona ahuehuellensis n. sp. (Nematoda: Rhabdochonidae) from the Balsas goodeid, Ilyodon whitei (Osteichthyes: Gooedeidae), in Mexico.
Mejia-Madrid, H. - Perez-Ponce de Leon, G.

Formato:	Artículo
Enlaces:	Rhabdochona ahuehuellensis n. sp. is described from the Balsas goodeid, Ilyodon whitei. The distinctive characters are cuticular elevations in the middle of the prostom, tricuspid ending of the distal part of the left spicule combined with a scoop shape, and…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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32.

Six new mexican species of Bernardia (Euphorbiaceae).
Cervantes, A. - Flores-Olvera, H.

Formato:	Artículo
Enlaces:	Six new species of Bernardia from Mexico are described and illustrated. Species are distinguished by a combination of characters such as habit, leaf shape and size, indumentum, venation pattern, gland position, length of staminate inﬂorescence, number of bracts, number of…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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33.

Systematics and biogeography of the New World species of Trichadenotecnum Enderlein (Insecta: Psocodea: Psocoptera: Psocidae).
Yoshizawa, K. - Garcia-Aldrete, A. N. - Mockford, E. L.

Formato:	Artículo
Enlaces:	The taxonomy of the New World species of the genus Trichadenotecnum is revised. A total of 44 species, including 29 new species, were treated. These species are classiﬁed into 12 monophyletic species groups, eight of them newly proposed here. Two…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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34.

Two new species of Bauhinia (Fabaceae: Caesalpinioideae: Cercideae) from Southeastern Mexico and Mesoamerica.
Torres-Colin, R.

Formato:	Artículo
Enlaces:	Two new species of Bauhinia L. (Fabaceae, Caesalpinioideae, Cercideae) are described and illustrated: B. miriamae R. Torres endemic to Oaxaca, and B. wunderlinii R. Torres from Mexico, Belize, and Honduras. Similarities to and differences from B. divaricata L. are discussed…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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35.

Two new species of freshwater crabs of the genus Tehuana (Brachyura: Pseudothelphusidae) from southern Mexico.
Villalobos, J. L. - Alvarez, F.

Formato:	Artículo
Enlaces:	Two new species of freshwater crabs of the genus Tehuana from the states of Tabasco and Oaxaca, Mexico, are described, and a new diagnosis for the genus is presented. Tehuana chontalpaensis, new species, was collected in a mountain river in…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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36.

Two new species of Gyrodactylus von Nordmann, 1832 (Monogenea: Gyrodactylidae) parasitizing Girardinichthys multiradiatus (Cyprinodontiformes: Goodeidae), an endemic freshwater fish from central Mexico.
Mendoza-Palmero, C. - Sereno-Uribe, A. - Salgado-Maldonado, G.

Formato:	Artículo
Enlaces:	Gyrodactylus mexicanus n. sp. and Gyrodactylus lamothei n. sp. are described from the ﬁns and skin of Girardinichthys multiradiatus, an endemic freshwater ﬁsh from central Mexico. Gyrodactylus mexicanus is compared to other Gyrodactylus species that parasitize Fundulus spp., the phylogenetically…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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37.

Two new species of nocturnal bees of the genus Megalopta (Hymenoptera: Halictidae) with keys to species.
Gonzalez, V. H. - Griswold, T. - Ayala, R.

Formato:	Artículo
Enlaces:	Megalopta Smith, 1853, is a Neotropical genus of nocturnal or crepuscular bees. Two subgenera are recognized with most of its nearly 30 species placed in the nominate subgenus. Species of Megalopta s. str. are more commonly collected than species of…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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38.

A new genus and species of Philometrid (Nematoda) from the subcutaneous tissue of the crevalle jack, Caranx hippos (Osteichthyes), from the southern Gulf of Mexico.
Moravec, F. - Montoya-Mendoza, J. - Salgado-Maldonado, G.

Formato:	Artículo
Enlaces:	A new genus and species of nematode, Caranginema americanum n. gen., n. sp. (Philometridae), are described from gravid, subgravid, and nongravid female specimens collected from the subcutaneous tissue of the ﬁsh (crevalle jack) Caranx hippos (Carangidae, Perciformes) from the coral…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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39.

Cystoopsis atractostei sp. n. (Nematoda: Cystoopsidae) from the subcutaneous tissue of the tropical gar, Atractosteus tropicus (Pisces), in Mexico.
Moravec, F. - Salgado-Maldonado, G.

Formato:	Artículo
Enlaces:	A new species of parasitic nematode, Cystoopsis atractostei (Trichinelloidea: Cystoopsidae), is described based on female specimens recovered from the subcutaneous tissue of the tropical gar, Atractosteus tropicus Gill (Lepisosteiformes: Lepisosteidae), from 2 localities (Canal Nueva Esperanza and Canal Tabasquillo) of…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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40.

Description of a new species of Crassicutis Manter, 1936, parasite of Cichlasoma beani Jordan (Osteichthyes: Cichlidae) in Mexico, based on morphology and sequences of the ITS1 and 28S ribosomal RNA genes.
Perez-Ponce de Leon, G. - Razo-Mendivil, U. - Rosas-Valdez, R. - Mejia-Madrid, H.

Formato:	Artículo
Enlaces:	A new species of Crassicutis Manter, 1936 is described from the Sinaloan cichlid Cichlasoma beani (Jordan) (Osteichthyes: Cichlidae) in the upper Rıo Santiago basin. Crassicutis choudhuryi n. sp. differs from most of the other nominal species by having testes located…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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41.

Ipomoea tehuantepecensis (Convolvulaceae): a new species from the Isthmus of Tehuantepec, Mexico.
Torres-Colin, L. - Torres-Colin, R. - Ramirez-de Anda, M. P. - McDonald, J. A.

Formato:	Artículo
Enlaces:	A new and narrowly endemic species from the Tehuantepec District of Oaxaca, Ipomoea tehuantepecensis L. Torres Colín, R. Torres Colín, M.P. Ramírez & J.A. McDonald, is described and illustrated. The new species belongs to a primitive assemblage of hairyseeded lianas…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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42.

Two new species of the spider genus Ochyrocera (Araneae, Ochyroceratidae) from Mexico.
Valdez-Mondragon, A.

Formato:	Artículo
Enlaces:	Two new species of the spider genus Ochyrocera Simon 1891 are described from Mexico. Ochyrocera juquila new species was collected under moist rotten logs and hollow trunks on a thick bed of pine needles in oakpine forests located in a…
Fecha:	2013-11-20
Recurso:	Facultad de Ciencias - UNAM

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43.

Redescubrimiento de Axiniphyllum sagittalobum (Asteraceae) en la Sierra Madre del Sur y notas de las especies de este género que habitan en el estado de Guerrero, México
González, A - Luna Vega, Mercedes Isolda - Villaseñor, JL

Formato:	Artículo de investigación
Enlaces:	Descripción completa.
Fecha:	20130312T14:39:15Z, 20130312T14:39:15Z, 2007
Recurso:	Facultad de Ciencias - UNAM

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44.

Understanding cultural significance, the edible mushrooms case.
Garibay Origel, Roberto - Caballero, J - Estrada Torres, A - Cifuentes Blanco, Joaquín

Formato:	Artículo
Enlaces:	Descripción completa.
Fecha:	2013-04-11
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

45.

Molecular evolution of peptide methionine sulfoxide reductases (MsrA and MsrB): on the early development of a mechanism that protects against oxidative damage
Delaye, L - Becerra Bracho, Arturo Carlos ll - Orgel, LE - Lazcano Araujo Reyes, Antonio Eusebio

Formato:	Artículo de investigación
Enlaces:	Methionine sulfoxide reductases, enzymes that reverse the oxidation of methionine residues, have been described in a wide range of species. The reduction of the diastereoisomers of oxidized methionine is catalyzed by two different monomeric methionine sulfoxide reductases (MsrA and MsrB)…
Fecha:	20130312T14:38:32Z, 20130312T14:38:32Z, 2007
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

46.

Protein disulfide oxidoreductases and the evolution of thermophily: was the last common ancestor a heatloving microbe?
Becerra Bracho, Arturo Carlos ll - Delaye, L - Lazcano Araujo Reyes, Antonio Eusebio - Orgel, L

Formato:	Artículo de investigación
Enlaces:	Protein disulfide oxidoreductases (PDOs) are redox enzymes that catalyze dithioldisulfide exchange reactions. Their sequences and structure reveal the presence of two thioredoxin fold units, each of which is endowed with a catalytic site CXXC motif. PDOs are the outcome of…
Fecha:	20130312T14:38:32Z, 20130312T14:38:32Z, 2007
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

47.

A new species of Tantilla (Squamata: Colubridae) of the calamarina group from volcán Ceboruco, Nayarit, Mexico
Canseco Márquez, Luis - Smith, EN - Flores Villela, Oscar Alberto - Campbell, JA - PonceCampos, P

Formato:	Artículo de investigación
Enlaces:	(2) the Balsas Basin of Morelos, Puebla, Distrito Federal, and the State of Mexico, A new species of Tantilla is described freom a single specimen obtained freom Volcan Ceboruco, southern Nayarit, Mexico. The new species closely resembles other species of…
Fecha:	20130312T14:39:10Z, 20130312T14:39:10Z, 2007
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

48.

Epidemiologic and ultrasonographic study of echinococcosis in a community in the state of Mexico
Mata-Miranda, Pilar - Osnaya-Palma, Israel - Rodriguez-Prado, Ulises - Guteirrez-Marin, America - Tawil, Marcos - Hernandez-González, Sandy - Solano-Ceh, Miguel - Villalvaso, Luis - Martinez-Maya, Jose Juan - Maravilla, Pablo - García-de-la-Torre, Guadalupe - Flisser, Ana

Formato:	Article
Enlaces:	No epidemiologic study for cystic echinococcosis in Mexico has yet been described. The objective of this work was to determine the prevalence and distribution of human echinococcosis in a community of the state of Mexico and its probable risk factors.…
Fecha:	2011-12-07
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

49.

Floristic and structural contrasts between natural savannas and anthropogenic pastures in a tropical dry landscape
López-Olmedo, LI - Meave del Castillo, Jorge Arturo - Pérez-García, Eduardo Alberto

Formato:	Article
Enlaces:	The magnitude of the biological differentiation between natural savannas and pastures (anthropogenic grasslands) coexisting in a single landscape, in terms of their floristic composition and community structure, was studied in the Nizanda region, Isthmus of Tehuantepec, Oaxaca State, southern Mexico.…
Fecha:	2011-01-22
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

50.

Variation in the population dynamics of the palm Sabal yapa in a landscape shaped by shifting cultivation in the Yucatan Peninsula, Mexico
Pulido, MT - Valverde-Valdés, María Teresa - Caballero, J

Formato:	Article
Enlaces:	To understand the population dynamics of a species, it is necessary to document the way in which its demographic behaviour varies through space and time. Anthropogenic disturbance, such as shifting cultivation, is an important factor causing demographic variation in many…
Fecha:	2013-04-05
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

51.

Variation in reproductive traits within the lizard genus Xenosaurus
Zamora-Abrego, JG - Zúñiga-Vega, José Jaime - Nieto-Montes de Oca, A

Formato:	Article
Enlaces:	We document variation among 13 populations of distinct species of the lizard genus Xenosaurus in four key reproductive traits: minimum size at maturity, litter size, size at birth, and relative clutch mass (RCM). Despite a common flattened morphology, considerable variation…
Fecha:	2013-04-05
Recurso:	Facultad de Ciencias - UNAM