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Pablo A Reyes-Castro, Robin B Harris, Heidi E Brown, Gary L Christopherson, Kacey C Ernst
Little is currently known about the spatial-temporal dynamics of dengue epidemics in arid areas. This study assesses dengue outbreaks that occurred in two arid cities of Mexico, Hermosillo and Navojoa, located in northern state of Sonora. Laboratory confirmed dengue cases from Hermosillo (N=2730) and Navojoa (N=493) were geocoded by residence and assigned neighborhood-level characteristics from the 2010 Mexican census. Kernel density and Space-time cluster analysis was performed to detect high density areas and space-time clusters of dengue...
March 2017: Acta Tropica
Alejandro Sanchez-Flores, Fernando Peñaloza, Javier Carpinteyro-Ponce, Nestor Nazario-Yepiz, Cei Abreu-Goodger, Carlos A Machado, Therese Ann Markow
We report genomes of two species of cactophilic Drosophila: Drosophila arizonae and D. navojoa These two are the closest relatives of D. mojavensis, forming the D. mojavensis cluster. D. mojavensis and D. arizonae diverged from D. navojoa ∼5.8 Mya, while the split between D. arizonae and D. mojavensis is more recent, at 1.5 Mya. Together the three genomes provide opportunities to examine genomic changes associated with speciation and host shifts in this ecologically defined group of flies. The three species are also separated by fixed inversion differences in three of their six chromosomes...
October 13, 2016: G3: Genes—Genomes—Genetics
Cosme Alvarado-Esquivel, Antonio Rascón-Careaga, Jesús Hernández-Tinoco, María Alba Guadalupe Corella-Madueño, Luis Francisco Sánchez-Anguiano, María Lourdes Aldana-Madrid, Gerardo Javier Almada-Balderrama, Alan Daniel Nuñez-Aguirre, Oliver Liesenfeld
OBJECTIVES: We sought to determine the prevalence of anti-Toxoplasma gondii antibodies in Yoremes and to identify associations of T. gondii exposure with sociodemographic, clinical and behavioural characteristics of Yoremes. DESIGN: A cross-sectional survey. SETTING: Yoremes were enrolled in the locality of Tierra Blanca in the municipality of Navojoa in Sonora State, Mexico. PARTICIPANTS: We studied 200 Yoremes (Mayos); they are an indigenous ethnic group living in a coastal region in northwestern Mexico...
May 12, 2016: BMJ Open
Alexel Burgara-Estrella, Mónica Reséndiz-Sandoval, Martí Cortey, Enric Mateu, Jesús Hernández
The aim of this work was to examine the evolution and potential existence of intragenic recombinations of PRRSV strains in Sonora, Mexico. In this study, 142 serum samples from farms located in Hermosillo (HMO), Cd. Obregón (OBR) and Navojoa (NAV) were sequenced from 2002 to 2012. Ninety non-redundant sequences of ORF5 gene were analyzed for temporal and spatial relationships among strains and the probability of a recombination event. The phylogenetic analysis showed 30 strains grouped into eight groups; 16 strains were closely related among the farms, while 14 were un-related...
December 5, 2014: Veterinary Microbiology
Edward Pfeiler, Carlos A Flores-López, Jesús Gerardo Mada-Vélez, Juan Escalante-Verdugo, Therese A Markow
The population genetics and phylogenetic relationships of Culex mosquitoes inhabiting the Sonoran Desert region of North America were studied using mitochondrial DNA and microsatellite molecular markers. Phylogenetic analyses of mitochondrial cytochrome c oxidase subunit I (COI) from mosquitoes collected over a wide geographic area, including the Baja California peninsula, and mainland localities in southern Arizona, USA and Sonora, Mexico, showed several well-supported partitions corresponding to Cx. quinquefasciatus, Cx...
2013: TheScientificWorldJournal
María del Refugio Palacios-Esquer, Orlando Tortoledo-Ortiz, Eréndira Torres-Valencia
OBJECTIVE: To assessment the nutrition condition and alimentary behavior in adolescents. METHODS: A sample of 616 adolescents of high school system financed by the government was studied. The number of the meals having at home on a weekly basis diet. Body Mass Index (BMI), anemia and vitamin were measured. They were divide by region of residence: north (Nogales), center (Hermosillo) and south (Navojoa) differenced by human development index (HDI) and its components...
January 2011: Revista Médica del Instituto Mexicano del Seguro Social
Luciano M Matzkin
Drosophila mojavensis is a cactophilic fly endemic to the northwestern deserts of North America. This species includes four genetically isolated cactus host races each individually specializing on the necrotic tissues of a different cactus species. The necrosis of each cactus species provides the resident D. mojavensis populations with a distinct chemical environment. A previous investigation of the role of transcriptional variation in the adaptation of D. mojavensis to its hosts produced a set of candidate loci that are differentially expressed in response to host shifts, and among them was glutathione S-transferase D1 (GstD1)...
February 2008: Genetics
L K Reed, M Nyboer, T A Markow
The cactophilic Drosophila mojavensis species group living in the deserts and dry tropical forests of the southwestern United States and Mexico provides a valuable system for studies in diversification and speciation. Rigorous studies of the relationships between host races of D. mojavensis and the relationships among the members of the species group (D. mojavensis, Drosophila arizona, and Drosophila navojoa) are lacking. We used mitochondrial CO1 sequence data to address the phylogenetics and population genetics of this species group...
March 2007: Molecular Ecology
D C S G Oliveira, E H Wintermute, W J Etges, W B Heed, P M O'Grady, R Desalle
Sequences from three gene regions from the nuclear and mitochondrial genomes were used to examine the extent and nature of hierarchical structure in the Drosophilamojavensis cluster (Drosophila arizonae, D. mojavensis and D. navojoa) of the D. repleta species group. To determine the genetic divergence of these three species, sequence data were analyzed using maximum parsimony and population aggregation analysis. Individual and combined gene genealogies indicate that D. arizonae and D. mojavensis are neither diagnosable nor monophyletic with respect to one another...
2003: Hereditas
W J Etges, L L Jackson
Epicuticular hydrocarbon variation was investigated among the three species of the Drosophila mojavensis cluster (D. mojavensis, D. arizonae, and D. navojoa) within the large D. repleta group. Because these hydrocarbons serve as contact pheromones in adult D. mojavensis, the chemical characteristics and differences in hydrocarbon profiles in populations of these three sibling species were further investigated. Twenty-seven hydrocarbon components with chain lengths ranging from C28 to C40, including n-alkanes, methyl-branched alkanes, n-alkenes, methyl-branched alkenes, and alkadienes were observed...
October 2001: Journal of Chemical Ecology
J R Weaver, J M Andrews, D T Sullivan
No abstract text is available yet for this article.
September 25, 1989: Nucleic Acids Research
H Gutiérrez Avila, S Becerra Winkler, H Brust Carmona
Based on the fact that drinking-water is of great significance in the transmission of infectious diseases, the incidence of diarrheal disorders was examined in two cities similar in their demographic composition and in their use of health services, but not in the quality of the drinking-water supply. In Navojoa, a city with high incidence of diarrheal diseases (116/1000 pop. in 1985), high rates of drinking-water contamination with fecal coliforms were found (43% of water samples); on the contrary, in Ciudad Obregón, a city with lower rates of diarrheal diseases (49/1000 pop...
May 1989: Salud Pública de México
A Ruiz, W B Heed, M Wasserman
The mojavensis cluster of the repleta species group of Drosophila (Drosophilidae: Diptera) consists of three species. One is newly described as D. navojoa. A second species, described here as D. arizonae, replaces D. arizonensis, which has become a junior subjective synonym for D. mojavensis, the third species in the cluster. A phylogeny of the three species is presented, based on chromosomal inversions, morphology, and the ability to produce hybrids. Breakage points are assigned for all inversions, and male genitalia are figured; 186 crosses were made from 225 possible combinations among 15 geographic strains from the southwestern United States, Mexico, and Guatemala...
January 1990: Journal of Heredity
C A Bayer, S W Curtiss, J A Weaver, D T Sullivan
The control of expression of the Adh-1 gene of Drosophila mojavensis has been analyzed by transforming ADH null Drosophila melanogaster hosts with P element constructs which contain D. mojavensis Adh-1 having deletions of different extent in the 5' and 3' ends. Adh-1 expression in the D. melanogaster hosts is qualitatively similar to expression in D. mojavensis, although expression is quantitatively lower in transformants. Deletions of the 5' end indicate that information required for normal temporal and tissue expression in larvae is contained within 70 bp of the transcription start site...
May 1992: Genetics
A G Adriano, A Sánchez
No abstract text is available yet for this article.
July 1975: Salud Pública de México
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