First record of Tamarixia dahlsteni Zuparko (Hymenoptera, Eulophidae), a parasitoid of Trioza eugeniae Froggatt (Hemiptera, Triozidae) and current status of the Tamarixia species in Mexico

Parasitic wasps of the genus Tamarixia represent important biological control agents of members of the true bug group, Psylloidea, and are host specific; therefore, they can be used to control insect pests. In this study we report, for the first time, the presence of the parasitoid Tamarixia dahlsteni in Mexico and its mitochondrial barcode region of the cytochrome oxidase I gene (COI). We also review the species diversity of the genus Tamarixia in Mexico

First record of Tamarixia dahlsteni Zuparko (Hymenoptera, Eulophidae), a parasitoid of Trioza eugeniae Froggatt (Hemiptera, Triozidae) and current status of Tamarixia species in Mexico

Parasitic wasps of the genus Tamarixia represent important biological control agents of members of the Psylloidea group and are host specific; therefore, they can be delivery used to control insect pests. In this study we report for the first time the parasitoid Tamarixia dahlsteni in Mexico and its mitochondrial barcode region of the cytochrome oxidase 1 gene (CO1). We also reviewed the species diversity of the genus Tamarixia in Mexico

Parasitoids of Chrysopidae Eggs in Sinaloa Mexico

The eggs parasitoids Myartsevaia chrysopae (Crawford) (Hymenoptera: Encyrtidae), Telenomus lobatus Johnson, Telenomus tridentatus Johnson (Hymenoptera: Scelionidae) and Trichogramma atopovirilia Oatman and Platner (Hymenoptera: Trichogrammatidae) are reported for the first time or in new localities in Mexico. Their occurrence was first discovered in 2018 during a survey of parasitism on chrysopid eggs, conducted on Sorghum bicolor L. Moench (Poales: Poaceae) and Zea mays L. (Poales: Poaceae) in different locations in Sinaloa, Mexico. The identity of the parasitoids was determined by morphology and for both species of Telenomus the barcode region of the cytochrome oxidase 1 gene (CO1) was generated to facilitate molecular diagnosis of these species in future studies

Association of the polymorphism 12109g>A from the gene as a risk factor for preterm birth

Introduction: Preterm birth is the most important cause of neonatal mortality and morbidity. It is a multifactorial disease with different etiologies, including genetic factors. Genetic variability is represented by single nucleotide polymorphisms (SNPs) in genes of proteins involved in the contractile activity. We determine the association between SNP 12109G> A in REN associated with preterm birth and premature rupture of membrane. Materials and methods: A study of cases ( N =112, 22–36 weeks of gestation; mean: 31, 95% confidence interval 30.7–32.2) and controls ( N =66; 38–40 weeks of gestation from the last menstrual period; mean: 39.8, 95% confidence interval 38.9–39.4) was performed. Genomic DNA was isolated in all patients from peripheral blood. The SNP 12109G> A ( Mbo I) in REN was typified by PCR-restriction fragment length polymorphism. Results: A significant difference in the case group for the SNP 12109G>A was observed. The A allele was increased in women with preterm birth (81% cases vs . 15% control, p A has odds ratio 6.62 (95% confidence interval 3.14–14.15), which means a high risk of preterm birth/premature rupture of membrane in presence of allele A, both in homozygotes and in heterozygotes. Conclusion: Allelic frequency of A of SNP 12109G>A was higher in women with preterm birth than in women with normal vaginal delivery and could be considered a risk factor