Molecular evidence of Leishmania spp. in spider monkeys (Ateles geoffroyi) from The Tuxtlas Biosphere Reserve, Veracruz, Mexico.

The black-handed spider monkey (Ateles geoffroyi) is a platyrrhine primate distributed in southern Mexico, Central America, and part of South America. Two subspecies inhabit Mexico: Ateles geoffroyi vellerosus and Ateles geoffroyi yucatanensis, both threatened with extinction. Serological evidence of exposure of spider monkeys to various groups of parasites such as Trypanosoma cruzi in México and Leishmania spp.

Seroprevalence and risk factors associated with infection in sheep of Veracruz State, southeast Mexico.

is widely prevalent in sheep and their products pose a risk to public health. The aim of this study was to identify the seroprevalence and risk factors associated with infection in sheep in Veracruz State, Mexico. The study was cross-sectional and it was carried out in thirteen municipalities distributed in three regions of Veracruz State.

Comparative Survival and the Cold-Induced Gene Expression of Pathogenic and Nonpathogenic from Tropical Eastern Oysters during Cold Storage.

Expression of the regulatory stress gene controls the transcription of genes, which are involved in survival and adaptation to low temperatures. The purpose of this study was to assess the growth kinetics of naturally occurring . in shellstock oysters and in vitro and the cold-shock-induced expression of the and gene response in vitro during postharvest refrigeration.

Effect of stress during slaughter on carcass characteristics and meat quality in tropical beef cattle.

Objective: This study aimed to determine the effects of stress during slaughter of beef cattle on physiological parameters, carcass, and meat quality at a Federal Inspection Type slaughterhouse located in the southeast of Mexico.

Methods: A total of 448 carcasses of male Zebu×European steers with an average age of 36 months were included. Carcass assessment of presence of bruises and bruise characteristics was carried out on each half-carcass.

Improved Microbial Safety of Direct Ozone-Depurated Shellstock Eastern Oysters () by Superchilled Storage.

The effect of superchilled storage at -1°C on the microbial safety of oyster depurated with 0.2, 0.4, and 0.

[Growth and survival of total and pathogenic Vibrio parahaemolyticus in American oyster (Crassostrea virginica) under cold storage].

Objective: To quantify Vibrio parahaemolyticus densities in American oyster (Crassostrea virginica) under cold storage.

Materials And Methods: 320 oysters were stored at 7°C for nine days and total and pathogenic densities were determined by the NMP-PCR methodology.

Results: V.

Environmental parameters influence on the dynamics of total and pathogenic Vibrio parahaemolyticus densities in Crassostrea virginica harvested from Mexico's Gulf coast.

The influence of environmental parameters on the total and pathogenic Vibrio parahaemolyticus seasonal densities in American oysters (Crassostrea virginica) was evaluated for 1 year. Harvesting site A yielded the highest mean densities of V. parahaemolyticus tlh+, tdh+/trh-, tdh-/trh+ and tdh+/trh+ during spring season at 2.

[Microbial risk assessment of Vibrio spp. in seafood products in Mexico].

Food-borne diseases are among the major public health problems that currently exist. Microbiological risk assessment is a process used to evaluate the hidden hazards in food, the likelihood of exposure to these hazards and their impact on public health. Risk assessment is performed in four steps: hazard identification, hazard characterization, assessment of exposure and risk characterization.

Seasonal abundance of total and pathogenic Vibrio parahaemolyticus isolated from American oysters harvested in the Mandinga Lagoon System, Veracruz, Mexico: implications for food safety.

The abundance of total and pathogenic Vibrio parahaemolyticus (Vp) strains in American oysters (Crassostrea virginica) harvested in two different harvest sites from the Mandinga lagoon System was evaluated monthly for 1 year (January through December 2012). Frequencies of species-specific genes and pathogenic genes exhibited a seasonal distribution. The annual occurrence of Vp with the species-specific tlh gene (tlh(+)) was significantly higher during the winter windy season (32.

Influence of water temperature and salinity on seasonal occurrences of Vibrio cholerae and enteric bacteria in oyster-producing areas of Veracruz, México.

The influence of temperature and salinity on the occurrence of Vibrio cholerae, Escherichia coli and Salmonella spp. associated with water and oyster samples was investigated in two lagoons on the Atlantic Coast of Veracruz, Mexico over a 1-year period. The results indicated that seasonal salinity variability and warm temperatures, as well as nutrient influx, may influence the occurrence of V.