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| Registros recuperados: 152 | |
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| Bray, David Barton; Florida International University; brayd@fiu.edu; Duran, Elvira; Centro Interdisciplinario de Investigacion para el Desarrollo Integral Regional, Unidad Oaxaca; eduran3@hotmail.com; Ramos, Victor Hugo; Wildlife Conservation Society-Guatemala; vhramos@wcs.org; Mas, Jean-Francois; Universidad Autonoma de Mexico; jfmas@ciga.unam.mx; Velazquez, Alejandro; Universidad Autonoma de Mexico; avmontes@ciga.unam.mx; McNab, Roan Balas; Wildlife Conservation Society-Guatemala; mcnab@wcs.org; Barry, Deborah; Center for International Forestry Research; dbarry@cgiar.org; Radachowsky, Jeremy; University of Florida; radachowsky@hotmail.com. |
| Community forests and protected areas have each been proposed as strategies to stop deforestation. These management strategies should be regarded as hypotheses to be evaluated for their effectiveness in particular places. We evaluated the community-forestry hypothesis and the protected-area hypothesis in community forests with commercial timber production and strict protected areas in the Maya Forest of Guatemala and Mexico. From land-use and land cover change (LUCC) maps derived from satellite images, we compared deforestation in 19 community forests and 11 protected areas in both countries in varying periods from 1988 to 2005. Deforestation rates were higher in protected areas than in community forests, but the differences were not significant. An... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Community forest management; Guatemala; Land-use and land cover change analysis; Logging; Mexico; Protected areas. |
| Ano: 2008 |
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| Local communities collectively managing common pool resources can play an important role in sustainable management, but they often lack the skills and context-specific tools required for such management. The complex dynamics of social-ecological systems (SES), the need for management capacities, and communities’ limited empowerment and participation skills present challenges for community-based natural resource management (CBNRM) strategies. We analyzed the applicability of prospective structural analysis (PSA), a strategic foresight tool, to support decision making and to foster sustainable management and capacity building in CBNRM contexts and the modifications necessary to use the tool in such contexts. By testing PSA in three SES in Colombia,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Argentina; Colombia; Latin America; Local knowledge; Mexico; Participatory techniques; Social-ecological systems; Strategic foresight. |
| Ano: 2016 |
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| Mendoza-Ruvalcaba,Sandra del Carmen; Brambila-Tapia,Aniel Jessica Leticia; Juárez-Osuna,Jesús Alejandro; Silva-José,Thiago Donizete Da; García-Ortiz,José Elías. |
| Abstract Mucopolysaccharidoses (MPS) are a group of genetic disorders, each resulting from the deficiency of one of the lysosomal enzymes that catabolizes mucopolysaccharides. For the accurate diagnosis of the disease, the quantification of a specific enzymatic activity is needed. In the present study, we analyzed seven MPS over several periods of time ranging from 2 to 5 years in a reference center in Mexico. During this time, a total of 761 samples belonging to 505 individuals with suspected MPS were analyzed. A total of 198 (26.01%) positive results were found. Among these, MPS IVA accounted for the highest frequency of positive results (49.10%), followed by MPS III (17.69%, IIIA: 11.80% and IIIB: 5.89%). Adjusting for the number of births per year, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mucopolysaccharidoses; Leukocyte enzymatic activity; Fluorometric assay; Mexico. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100106 |
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| Bandy, W; Michaud, F; Dyment, Jerome; Mortera Gutierrez, C; Bourgois, J; Calmus, T; Sosson, M; Ortega Ramirez, J; Royer, J; Pontoise, B; Sichler, Bertrand. |
| To better understand the recent motion of the Pacific plate relative to the Rivera plate and to better define the limitations of the existing Rivera-Pacific plate motion models for accurately predicting this motion, total-field magnetic data, multibeam bathymetric data and sidescan sonar images were collected during the BART and FAMEX campaigns of the N/O L'Atalante conducted in April and May 2002 in the area surrounding the Moctezuma Spreading Segment of the East Pacific Rise, located offshore of Manzanillo, Mexico, at 106 degrees 16'W, between 17.8 degrees N and 18.5 degrees N. Among the main results are: (1) the principle transform displacement zone of the Rivera Transform is narrow and well defined east of 107 degrees 15'W and these azimuths should be... |
| Tipo: Text |
Palavras-chave: Plate motions; Plate boundary morphology; Mexico; Rivera plate; Rivera Transform; East Pacific Rise. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4486.pdf |
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| Vázquez-Barragán,Miguel Ángel; Garza-Báez,Azalea; Morales-Avalos,Rodolfo; Martínez-González,Brenda; Jacobo-Baca,Guillermo; Pinales-Razo,Ricardo; Quiroga-Garza,Alejandro; de la Fuente-Villarreal,David; Elizondo-Riojas,Guillermo; Elizondo-Omaña,Rodrigo E; Guzmán-López,Santos. |
| The Mexican government passed a new reform of article 11 of the General Law in 2014 regarding Women's Access to a Life Free of Violence, which states that a cesarean section may not be performed if a vaginal birth is viable. Cesarean sections are excessively indicated in Northen Mexico, using the diagnosis of cephalopelvic disproportion due to a narrow pelvis. Currently, there is no standardized morphometry of the female pelvis in a Mexican population to establish adequate diagnostic parameter. Our study measures the pelvic diameters of the birth canal using abdominopelvic computed tomography (CT). Two hundred and ninety CT from Mexican women between the ages of 18 and 50 were collected and 3D reformatted in order to morphologically measure the pelvic... |
| Tipo: Journal article |
Palavras-chave: Pelvimetry; Cesarean; Cephalopelvic disproportion; Reformatted CT; Morphometry; Mexico. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100043 |
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| Jiménez-Coello,Matilde; Acosta-Viana,Karla; Guzmán-Marín,Eugenia; Bárcenas-Irabién,Alejandra; Ortega-Pacheco,Antonio. |
| AbstractBackground The American trypanosomiasis is a zoonosis caused by the protozoaTrypanosoma cruzi (T. cruzi). The disease is widely distributed throughout the American continent, affecting a wide range of hosts, including dogs. It is present in the canine population in the State of Yucatan, Mexico. However, no significant studies in owned dogs have been performed in the metropolitan area of Merida. A transversal study was conducted in 370 owned dogs from Merida, Yucatan, Mexico.Methods A cross-sectional study including 370 dogs was performed in a major city of Yucatan, Mexico, to detect IgG antibodies against T. cruzi. A commercial ELISA test kit was used and a chi-square test used to evaluate associated risk factors; odds ratio (OR) and 95 %... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trypanosoma cruzi; Epidemiology; Owned dogs; Major city; Mexico. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100343 |
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| Vega, Francisco J.; Garcia-Barrera, P.; Coutiño, M.; Nyborg, T.; Cifuentes-Ruiz, P.; González-Rodríguez, K.; Martens, A.; Delgado, C.R.; Carbot, G.. |
| Several well-preserved arthropod faunas have been studied in Mexico during the past few years. The purpose of the present note is to outline advances in the study of these arthropods and of their paleoenvironmental implications, from four localities. The age for these localities ranges from the Early to the Late Cretaceous. At most of these localities lithographic limestones crop out, with fish remains representing the most attractive element of study. However, arthropods constitute a very important tool for reconstructing paleoenvironment (marine crustaceans, freshwater and terrestrial insects and arachnids). Detailed studies of these assemblages will aid in our understanding of ancient coastal dynamics and the paleoecology of these unique environments. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cretaceous; Plattenkalk; Arthropoda; Mexico. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/534392 |
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| Fraaije, R.H.B.; Vega, F.J.; Bakel, B.W.M. van; Garibay-Romero, L.M.. |
| Two new brachyuran species are described for the Upper Cretaceous Mexcala Formation, Guerrero State, Mexico. Longusorbis quadratus new species (Coniacian, Temalac region) is the oldest and southernmost record for the genus. Xanthosia zoquiapensis new species (Campanian, Zoquiapa region) is the first record for the genus in Mexico. In addition, the age for Costacopluma bishopi Vega and Feldmann is discussed (Coniacian, Temalac region) and represents the oldest and southernmost record for Cretaceous representatives of this genus in North America. All specimens are considerably smaller compared to other species of the same genera and are interpreted as the first example of brachyuran dwarfism in the geological record. These species add new insight into... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dwarfism; Decapoda; Cretaceous; New species; Mexico; 38.22; 42.74. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/214533 |
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| Braet, Y.; Achterberg, C. van. |
| Three genera of the subfamily Doryctinae Foerster, 1862 (Hymenoptera: Braconidae) are treated and keyed: Ptesimogaster Marsh, 1965, Caingangia Marsh, 1993, and Leptodoryctes Barbalho & Penteado- Dias, 1999. The latter genus is characterised by the presence of an apical setal comb on the hind tibia. Two new genera are described: Ptesimogastroides gen. nov. (type species: P. cerdai spec. nov. from French Guiana and Brazil) and Dicarinoryctes gen. nov. (type species: D. apicalis spec. nov. from French Guiana). A further three new species are described: Caingangia delicata spec. nov. from French Guiana, Leptodoryctes barbalhoae spec. nov. from French Guiana, and Ptesimogaster lemkoi spec. nov. from Brazil. Pseudorhoptrocentrus platyfemur (Marsh, 1993) is a... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Braconidae; Doryctinae; Caingangia; Leptodoryctes; Heterospathius; Ptesimogaster; Dicarinoryctes; Ptesimogastroides; Pseudorhoptrocentrus; Curtisella; New species; New genus; Neotropical; French Guiana; Brazil; U.S.A.; Mexico; Distribution; Keys; 42.75. |
| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/217438 |
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| Fiers, Frank; Reid, Janet W.; Iliffe, Thomas M.; Suárez-Morales, Eduardo. |
| Four previously unknown hypogean species of cyclopoid copepods were collected in cenotes and wells of the Yucatán Peninsula, Mexico. Diacyclops chakan sp. n. and D. puuc sp. n. differ from their congeners in combining 3-segmented swimming legs, 11-segmented antennules, and legs 1-4 endopodite segment 2 all with 2 setae. Species of Diacyclops rarely occur in tropical regions, and the Diacyclops described here are only the second and third species recorded from Mexico. The benthic D. puuc was found in the large underground reservoir of a cenote. Diacyclops chakan was encountered in such large open subterranean water basins, but more frequently and abundantly in wells. The two Mesocyclops species, M. chaci sp. n. and M. yutsil sp. n., most closely resemble... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Diacyclops; Mesocyclops; Copepoda; Cyclopoida; Biogeography; Evolution; Hypogean; Karst; Species-flock; Taxonomy; Mexico. |
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/504240 |
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| Anderson, C.. |
| A review of collections from Mexico to northern South America that had been primarily determined as H. barclayana, H. reclinata, and H. ternifolia, or synonyms, showed them to include ten species. Misinterpretations were caused by superficial morphological similarities and traditional nomenclatural errors. The species now recognized include six previously described: H. barclayana, H. hookeriana (formerly included in H. reclinata), H. reclinata, H. sanctae-marthae, H. ternifolia, and H. transiens. Four new species are proposed: H. mcvaughii, H. silvicola, and H. venezuelana; H. trianae was previously recognized at varietal level and is elevated to species. A neotype is chosen for H. reclinata. Lectotypes are designated for H. velutina (= H. barclayana) and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Central America; Colombia; Hiraea; Malpighiaceae; Mexico; Venezuela. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/613731 |
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| Bishop, G.A.; Feldmann, R.M.; Vega, F.. |
| The podotrematous crab family Dakoticancridae includes four genera: Dakoticancer Rathbun, Tetracarcinus Weller, Avitelmessus Rathbun, and Seorsus Bishop, all known solely from the Late Cretaceous of North America. Lathelicocarcinus Bishop, originally referred to the family, must be reassigned. Fine details of anatomy, preserved on specimens of D. overanus Rathbun and A. grapsoideus Rathbun, permit description of genital openings and interpretation of functional morphology of appendages. Although one species, D. australis Rathbun, has been found associated with burrow structures, all were probably vagrant epifaunal animals on fine- to medium-grained siliciclastic substrata. Food was probably obtained by generalized low-level predation and scavenging.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dakoticancridae; Brachyura; Paleobiology; Paleobiogeography; Late Cretaceous; North America; Mexico; Taxonomy; Cladistics. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/534324 |
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| Registros recuperados: 152 | |
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