A New Species of (Acari: Tenuipalpidae) from Brazil and Re-Description of (De Leon), the Type Species of the Genus, with DNA Barcodes.

Species of the genus bear a broad subquadrate propodosoma with many large, flattened, lanceolate to ovate dorsal setae. They also bear some plesiomorphic character states, such as the presence of three pairs of ventral setae. Here, we describe Castro, Ochoa & Feres sp.

High susceptibility of (Acari: Tetranychidae), an emergent pest of the tropical crop , towards and strains.

Background: The mite is considered to be an emerging pest of various crops in tropical countries. It is one of the most detrimental pests in the papaya orchards of some regions of México. The current field control of spp.

Brevipalpus mites associated with coffee plants (Coffea arabica and C. canephora) in Chiapas, Mexico.

Tenuipalpid mites of the genus Brevipalpus are of significant economic and quarantine importance in agriculture. They can damage and vector phytopathogenic viruses in coffee plantations and other crops. In this study, we focused on: identification of the Brevipalpus species, assessment of the spread of Brevipalpus-associated viruses (CoRSV, CiLV-N, CiLVC and CiLVC2), and mite population fluctuations over the course of 1 year.

Potential areas for the establishment of citrus leprosis virus vectors, Brevipalpus spp., in Mexico.

Citrus leprosis is a viral disease vectored by the mites Brevipalpus californicus and Brevipalpus yothersi. This work aimed to determine the potential areas for establishment of both mites and viruses in Mexico, based on the geographical distribution of the hosts and the climatic suitability for the vectors. Life tables of both mites were constructed to determine their thermal requirements-base temperature and degree-days required to complete life cycle-and population growth parameters-net reproduction rate, generation time, and intrinsic growth rate.

First detection of orchid fleck virus in orchids in Mexico.

For the first time, an isolate of the dichorhavirus orchid fleck virus (OFV, family ) was found infecting an orchid plant in Mexico. The infected sample of was collected in a nursery in Lagunillas, municipality of Zihuateutla, Edo. Puebla.

Dispersal and resistance to starvation in Raoiella indica (Acari: Tenuipalpidae).

Raoiella indica Hirst (Tenuipalpidae) is an obligate phytophagous mite that has rapidly colonized wide areas of tropical America and causes severe injuries, mainly to plants in the families Arecaceae, Heliconiaceae, Zingiberaceae and Musaceae. This study evaluates biological attributes of the species that could explain its potential as invasive pest, its capacity to survive when deprived of food and its dispersal mechanisms, including passive displacement by wind and possible phoretic association with insects. This mite has a higher resistance to starvation than other phytophagous mites, with a maximum 12 days for adult females.

Reassortment of Genome Segments Creates Stable Lineages Among Strains of Orchid Fleck Virus Infecting Citrus in Mexico.

The genus s contains viruses with bipartite, negative-sense, single-stranded RNA genomes that are transmitted by flat mites to hosts that include orchids, coffee, the genus , and citrus. A dichorhavirus infecting citrus in Mexico is classified as a citrus strain of orchid fleck virus (OFV-Cit). We previously used RNA sequencing technologies on OFV-Cit samples from Mexico to develop an OFV-Cit-specific reverse transcription PCR (RT-PCR) assay.

Identification and Molecular Characterization of Nuclear Citrus leprosis virus, a Member of the Proposed Dichorhavirus Genus Infecting Multiple Citrus Species in Mexico.

Citrus leprosis is one of the most destructive diseases of Citrus spp. and is associated with two unrelated virus groups that produce particles primarily in either the cytoplasm or nucleus of infected plant cells. Symptoms of leprosis, including chlorotic spots surrounded by yellow haloes on leaves and necrotic spots on twigs and fruit, were observed on leprosis-affected mandarin and navel sweet orange trees in the state of Querétaro, Mexico.

Genome assembly of citrus leprosis virus nuclear type reveals a close association with orchid fleck virus.

The complete genome of citrus leprosis virus nuclear type (CiLV-N) was identified by small RNA sequencing utilizing leprosis-affected citrus samples collected from the state of Querétaro, Mexico. The nucleotide identity and phylogenetic analysis indicate that CiLV-N is very closely related to orchid fleck virus, which typically infects Cymbidium species.

[Intraspecific variation analysis of Conidiobolus coronatus using RAPD and ITS sequencing].

Introduction: The fungus Conidiobolus coronatus (C. coronatus) has an extensive distribution of habitats and hosts. It is found saprophytically, and attacks insects and mammals, including humans.

Repellency of the oily extract of neem seeds (Azadirachta indica) against Varroa destructor (Acari: Varroidae).

A crude oil extract of neem seed (Azadirachta indica, Sapindales: Meliaceae) was evaluated for repellency on Varroa destructor Anderson and Trueman. Burgerjon's tower was used to spray worker bee pupae with 0.0, 0.

Identification and characterization of a novel etiological agent of mango malformation disease in Mexico, Fusarium mexicanum sp. nov.

The primary objective of this study was to characterize Fusarium spp. associated with the economically devastating mango malformation disease (MMD) in Mexico. In all, 142 Fusarium strains were isolated from symptomatic mango inflorescences and vegetative tissues in eight geographically diverse Mexican states from 2002 through 2007.

The population level of Eotetranychus lewisi and the concentration of carbohydrates in peach trees.

Lewis spider mite Eotetranychus lewisi (McGregor) is the most important pest in peach orchards, Prunus persica (L.) (Batsch), in North-Central Mexico. In autumn 2003 and spring 2004, two glasshouse experiments were carried out to assess the influence of that mite on the concentration of total soluble sugars and starch in leaves, bark and roots of 'diamante mejorado' peach trees.