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https://www.readbyqxmd.com/read/28738511/litter-thickness-but-not-root-biomass-explains-the-average-and-spatial-structure-of-soil-hydraulic-conductivity-in-secondary-forests-and-coffee-agroecosystems-in-veracruz-mexico
#1
B E Marín-Castro, S Negrete-Yankelevich, D Geissert
Secondary forests and coffee agroecosystems are considered good alternatives for conservation of a high capacity for water filtration in the soil where tropical montane cloud forests (TMCF) once grew; however, it is not clear which characteristics of the vegetation modulate the field saturated hydraulic conductivity of the soil (Kfs) and whether these characteristics persist in such derived systems. Here, we explore how changes in vegetation between secondary forests and coffee agroecosystems have consequences for the average value and spatial variation of litter thickness and root biomass, and whether these differences can explain the Kfs and its spatial distribution...
July 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28630868/serum-dried-samples-to-detect-dengue-antibodies-a-field-study
#2
Angelica Maldonado-Rodríguez, Othon Rojas-Montes, Guillermo Vazquez-Rosales, Adolfo Chavez-Negrete, Magdalena Rojas-Uribe, Araceli Posadas-Mondragon, Leopoldo Aguilar-Faisal, Ana Maria Cevallos, Beatriz Xoconostle-Cazares, Rosalia Lira
BACKGROUND: Dried blood and serum samples are useful resources for detecting antiviral antibodies. The conditions for elution of the sample need to be optimized for each disease. Dengue is a widespread disease in Mexico which requires continuous surveillance. In this study, we standardized and validated a protocol for the specific detection of dengue antibodies from dried serum spots (DSSs). METHODS: Paired serum and DSS samples from 66 suspected cases of dengue were collected in a clinic in Veracruz, Mexico...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28610195/three-new-species-of-i-pergalumna-i-acari-oribatida-galumnidae-from-the-tropical-rainforest-of-veracruz-mexico
#3
José G Palacios-Vargas, Fernando Villagomez
Three new species of oribatid mites of the genus Pergalumna from a tropical rain forest in Veracruz, Mexico are described. Pergalumna hypergranulosa sp. nov. differs from Pergalumna granulatus Balogh & Mahunka, 1967 by unilaterally barbulated bothridial setae, elongated notogastric porose areas, and also a more profuse granulation of the cerotegument. Pergalumna obsidiana sp. nov. differs from P. granulatus by the unilateral barbulation of bothridial setae and the presence of protuberances on the genital plates; from Pergalumna paralongisetosa Ermilov & Kalúz, 2012 by a diverging cerotegumental granulation on the notogaster...
March 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610098/new-state-records-and-updated-checklist-of-aphodiini-and-eupariini%C3%A2-coleoptera-scarabaeidae-aphodiinae-from-mexico
#4
Pablo Minor
Thirty one new state records of species of Aphodiinae (Coleoptera: Scarabaeidae) from Mexico are presented, 24 species belong to Aphodiini and seven species to Eupariini into the genera Agrilinellus, Alloblackburneus, Aphotaenius, Ataenius, Blackburneus, Cephalocyclus, Coelotrachelus, Euparia, Euparixia, Geomyphilus, Gonaphodiellus, Gonaphodiopsis, Haroldiellus, Liothorax, Nialaphodius, Odontolytes, Oscarinus, Pharaphodius, and Planolinellus. New records are from the states of Aguascalientes, Baja California, Baja California Sur, Campeche, Colima, Chiapas, Estado de México, Guerrero, Hidalgo, Jalisco, Michoacán, Morelos, Nayarit, Puebla, Sonora, Tabasco, Tamaulipas, Tlaxcala, Veracruz, Zacatecas, and Distrito Federal...
March 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609907/morphology-variation-of-lutzomyia-cruciata-eggs-diptera-psychodidae-phlebotominae-in-southern-mexico
#5
Ana Celia Montes DE Oca-Aguilar, Oscar Mikery-Pacheco, Alfredo Castillo, Eduardo A Rebollar-Téllez, Peter M Piermarini, Sergio Ibáñez-Bernal
The sand fly Lutzomyia cruciata has been associated with the transmission of Leishmania mexicana to humans in Mexico. This species has a wide distribution in Mexico occupying different microhabitats and environments. In this work comparisons of the egg exochorion of Lu. cruciata from different physiographic areas are presented. Study sites are from different states of southern Mexico. Exochorion analysis was carried out using scanning electron microscopy (SEM). Results show differences in the exochorionic pattern among samples from Veracruz (AVER), Yucatán (HOYU) and Chiapas (TACH)...
May 2, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609884/new-species-of-narberdia-burke-from-m%C3%A3-xico-and-central-america-coleoptera-curculionidae
#6
Macotulio Soto-Hernández
Four new species of the previously monotypic genus Narberdia Burke are described. All of them are intimately associated with plants of the genus Bernardia (Euphorbiaceae). Narberdia cervantae Soto-Hernández, new species (México, Jalisco on Bernardia spongiosa McVaugh), N. sarukhani Soto-Hernández, new species (México, Veracruz and Costa Rica on B. mexicana (Hook. & Arn.) Müll. Arg. and B. nicaraguensis Standl. & L.O. Williams), N. dugesi Soto-Hernández (México, Querétaro and Michoacán on B. mexicana and B...
May 8, 2017: Zootaxa
https://www.readbyqxmd.com/read/28468861/detection-of-emerging-vaccine-related-polioviruses-by-deep-sequencing
#7
Malaya K Sahoo, Marisa Holubar, ChunHong Huang, Alisha Mohamed-Hadley, Yuanyuan Liu, Jesse J Waggoner, Stephanie B Troy, Lourdes Garcia-Garcia, Leticia Ferreyra-Reyes, Yvonne Maldonado, Benjamin A Pinsky
Oral poliovirus vaccine can mutate to regain neurovirulence. To date, evaluation of these mutations has been performed primarily on culture-enriched isolates by using conventional Sanger sequencing. We therefore developed a culture-independent, deep-sequencing method targeting the 5' untranslated region (UTR) and P1 genomic region to characterize vaccine-related poliovirus variants. Error analysis of the deep-sequencing method demonstrated reliable detection of poliovirus mutations at levels of <1%, depending on read depth...
July 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28463567/phylogeny-and-polycyclic-aromatic-hydrocarbons-degradation-potential-of-bacteria-isolated-from-crude-oil-contaminated-site
#8
David Tirado-Torres, Otilio Acevedo-Sandoval, Blanca R Rodríguez-Pastrana, Martha Gayosso-Canales
This study employed the use of 16S rRNA gene sequence analysis to identify three of four native bacterial strains isolated from crude oil-contaminated site in Poza Rica, Veracruz, Mexico. The identified bacteria were Ochrobactrum intermedium, Pandoraea pnomenusa and Ochrobactrum sp., but SA2-09 strain was not identified. The ability of the isolates to degrade polycyclic aromatic hydrocarbons (PAHs) was evaluated at 31.61 and 54.52 mg/kg PAHs in soil, when used as crude oil in soil microcosm during 80 days of incubation at 30°C...
May 2, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28434667/sedimentary-heavy-metal-loid-contamination-in-the-veracruz-shelf-gulf-of-mexico-a-baseline-survey-from-a-rapidly-developing-tropical-coast
#9
Omar Celis-Hernandez, Leticia Rosales-Hoz, Andrew B Cundy, Arturo Carranza-Edwards
This study examines sediment texture, geochemistry and sediment accumulation in cores from four sites in the Veracruz shelf area of the Gulf of Mexico, to assess the inputs of heavy metal(loid)s (and their potential biological impacts) in this carbonate-dominated shelf system, and to examine the rate of sedimentation near to the mouths of the La Antigua and Jamapa Rivers. The use of different pollution indices showed enrichment with Pb in all cores studied, although based on sediment quality guidelines As was the only element that has potential to occasionally cause damage to the benthic organisms present in the area...
April 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28423109/effects-of-climatic-and-social-factors-on-dengue-incidence-in-mexican-municipalities-in-the-state-of-veracruz
#10
Grea Litai Moreno-Banda, Horacio Riojas-Rodríguez, Magali Hurtado-Díaz, Rogelio Danis-Lozano, Stephen Joel Rothenberg
Objective: To assess links between the social variables and longer-term El Niño-Southern Oscillation (ENSO) related weather conditions as they relate to the week-to-week changes in dengue incidence at a regional level. Materials and methods: We collected data from 10 municipalities of the Olmeca region in México, over a 10 year period (January 1995 to December 2005). Negative binomial models with distributed lags were adjusted to look for associations between changes in the weekly incidence rate of dengue fever and climate variability...
January 2017: Salud Pública de México
https://www.readbyqxmd.com/read/28420310/helminth-fauna-associated-with-three-neotropical-bat-species-chiroptera-mormoopidae-in-veracruz-mexico
#11
Emilio Clarke-Crespo, Gerardo Pérez-Ponce de León, Salvador Montiel-Ortega, Miguel Rubio-Godoy
Bats are recognized as potential hosts of pathogens exploiting the food chain to reach them as definitive hosts. However, very little is known about their endoparasites, especially for Neotropical bats. In this study, we assessed the helminth fauna associated with 3 insectivorous bat species roosting in the same single hot cave in central Veracruz, Mexico: the ghost-faced bat (Mormoops megalophylla), the naked-backed bat (Pteronotus davyi) and Wagner's mustached bat (Pteronotus personatus). During a period of 1 yr (April 2007-2008), a total of 135 mormoopid bats were collected and examined for helminths...
April 18, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28355391/nesting-of-morelet-s-crocodile-crocodylus-moreletii-dumeril-and-bibron-in-los-tuxtlas-mexico
#12
A Villegas, G D Mendoza, J L Arcos-García, V H Reynoso
We evaluated the nesting by Crocodylus moreletii in Lago de Catemaco, Veracruz, southeastern, Mexico. During the nesting and hatching seasons, we searched for nests along the northern margins of the lake and small associated streams. We investigated egg mortality by weekly monitoring each of the nests found, recording sign of predation (tracks and holes dug into the nest) and the effect of water level fluctuations. We not found differences to nest between inland or flooded zones. However, we found that egg size varied among nests...
March 16, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28319178/inter-nesting-movements-and-habitat-use-of-adult-female-kemp-s-ridley-turtles-in-the-gulf-of-mexico
#13
Donna J Shaver, Kristen M Hart, Ikuko Fujisaki, David Bucklin, Autumn R Iverson, Cynthia Rubio, Thomas F Backof, Patrick M Burchfield, Raul de Jesus Gonzales Diaz Miron, Peter H Dutton, Amy Frey, Jaime Peña, Daniel Gomez Gamez, Hector J Martinez, Jaime Ortiz
Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60); Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11); and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11)...
2017: PloS One
https://www.readbyqxmd.com/read/28317799/a-first-insight-into-the-genetic-diversity-of-mycobacterium-tuberculosis-in-veracruz-mexico
#14
Raquel Almaraz-Velasco, Daniela Munro-Rojas, Javier Fuentes-Domínguez, Raquel Muñiz-Salazar, Maria Angélica Ibarra-Estela, Alma Delia Guevara-Méndez, Rosa Icela Chaparro-Martinez, Monserrat Perez-Navarro, Roberto Zenteno-Cuevas
OBJECTIVE/BACKGROUND: Tuberculosis (TB) remains one of the most important infectious diseases. Although Mexico is one of the Latin American countries with the largest contribution to these statistics, there are few reports that describe the genotypic characteristics of TB. The aim of this study was to use the MIRU-VNTR-24 loci to analyze the genetic diversity of M. tuberculosis circulating in the state of Veracruz, Mexico. METHODS: Here, we analyze by MIRU-VNTR-24 loci 80 clinical isolates from individuals with confirmed TB from Veracruz México, also clinical and epidemiological variables were recovered and analyzed...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28278121/statistical-analysis-of-corn-consumption-for-improved-mycotoxin-exposure-estimates-for-the-population-of-veracruz-city-mexico
#15
H A Wall-Martínez, A Ramírez-Martínez, N Wesolek, C Brabet, G C Rodríguez-Jimenes, M A García-Alvarado, M A Salgado-Cervantes, V J Robles-Olvera, A C Roudot
Corn consumption was evaluated in the population of Veracruz City, Mexico, through two different dietary intake questionnaires. The selection of 300 sampling locations was completely random. The population was segregated into gender and age categories. A daily consumption questionnaire was used to determine the consumption of corn tortillas and a frequency questionnaire to determine the consumption of other corn products. A book of photographs was used to adjust criteria on the size of the portions of corn products and a probability distribution was built of the weight and content of corn for tortillas...
May 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28249704/-out-of-pocket-expenditure-by-elderly-adults-enrolled-in-a-public-health-insurance-programme-in-mexico
#16
Patricia Pavón-León, Hortensia Reyes-Morales, Armando J Martínez, Silvia María Méndez-Maín, María Del Carmen Gogeascoechea-Trejo, María Sobeida L Blázquez-Morales
OBJECTIVE: To identify the association between various sociodemographic variables and out-of-pocket expenditure on health by elderly people enrolled in Seguro Popular (SP). METHOD: Analytical cross-sectional study. An in-person survey was administered to users of three outpatient clinics in the state of Veracruz: a health centre (first level), regional hospital (second level) and highly specialised hospital. The out-of-pocket expenditure on health was analysed using a generalised linear model...
February 26, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/28236707/effect-of-landscape-tree-cover-sex-and-season-on-the-bioaccumulation-of-persistent-organochlorine-pesticides-in-fruit-bats-of-riparian-corridors-in-eastern-mexico
#17
Carolina Valdespino, Vinicio J Sosa
Riparian forests are recognized as important ecosystems for biodiversity conservation in transformed landscapes. Many animal species that use this type of vegetation facilitate its recovery through pollination and seed dispersal. In landscapes dominated by agrosystems and cattle ranching, persistent organochlorine pesticides (OCPs) in the riparian system may have an effect on the physiology and fitness of animals. In this study, we measured bioaccumulation of OCPs in the most abundant frugivorous bat, Sturnira hondurensis, from the upper part of La Antigua basin, Veracruz, Mexico and, from these data, estimated accumulation by the frugivorous bat community of riparian forests in contrasting, transformed (TL) and forested (FL) landscapes...
May 2017: Chemosphere
https://www.readbyqxmd.com/read/28187611/on-the-poorly-known-haplogynae-spiders-of-the-genus-i-ochyrocera-i-simon%C3%A2-araneae-ochyroceratidae-from-mexico-description-of-two-new-species-with-an-updated-identification-key-for-mexican-species
#18
Alejandro Valdez-Mondragón
Two new species of the spider genus Ochyrocera Simon 1891 are described from Mexico. Ochyrocera jarocha new species was collected under rotten trunks and hollow trunks in a tropical rainforest, in San Martin Volcano, Veracruz, Mexico. Ochyrocera pojoj new species was collected in a mixed forest, under rotten trunks, in La Trinitaria, Chiapas, Mexico, which represents the third species described from the state of Chiapas. With the description of the two new species herein, six species of Ochyrocera are recorded from Mexico...
January 26, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187558/a-new-species-of-i-frankliniella-i-with-7-segmented-antennae-from-mexico-thysanoptera-thripinae
#19
Arturo Goldaracena, Thierry Hance
Frankliniella veracrucensis sp. n. is described from flowers of Salvia leucantha [Lamiaceae] in Veracruz, Mexico. This is the fourth Frankliniella species known with seven antennal segments, and a key to the Frankliniella species with antennae 7-segmented is provided.
February 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28185210/a-multi-criteria-approach-to-identify-favorable-areas-for-goat-production-systems-in-veracruz-m%C3%A3-xico
#20
Emmanuel de Jesús Ramírez-Rivera, Jose Lopez-Collado, Pablo Díaz-Rivera, Eusebio Ortega-Jiménez, Glafiro Torres-Hernández, Jazmín Jacinto-Padilla, Erasmo Herman-Lara
This research identifies favorable areas for goat production systems in the state of Veracruz, Mexico. Through the use of the analytic hierarchy process, layers of biophysical and soil information were combined to generate a model of favorability. Model validation was performed by calculating the area under the curve, the true skill statistic, and a qualitative comparison with census records. The results showed the existence of regions with high (4494.3 km(2)) and moderate (2985.8 km(2)) favorability, and these areas correspond to 6...
April 2017: Tropical Animal Health and Production
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