Insecticide Activity of and (Asteraceae) against (Diptera: Psychodidae).

Background: Insects are mostly pathogens transmitters, thus the necessity of finding effective bioinsecticides to combat them. In the present investigation, the insecticide activity of and (Asteraceae) essential oils, methanol, and aqueous extracts was evaluated against (Diptera: Psychodidae) females, transmitters, a wide distributed parasitosis in Latin America.

Materials And Methods: All extracts were prepared by maceration at room temperature, and essential oils were obtained by hydrodistillation process.

Effect of environmental disturbance on the population of sandflies and leishmania transmission in an endemic area of Venezuela.

The exploitation of new wilderness areas with crops is increasing and traditional crop substitution has been modified by new more productive crops. The results show the anthropogenic disturbance effect on the sandflies population and Leishmania transmission in endemic areas of Venezuela. Three agroecosystems with variable degrees of ecological disturbance, forest (conserved), cacao (fragmented), and orangery (disturbed), were selected.

Adulticide effect of Monticalia greenmaniana (Asteraceae) against Lutzomyia migonei (Diptera: Psychodidae).

Leishmaniasis is a public health problem that has been increasing year by year, with the further difficulty that an efficient control system is not available. Therefore, it is necessary to search for less contaminating and dangerous alternatives for controlling Leishmania transmitting sandflies. The purpose of this study was to evaluate the activity of Monticalia greenmaniana (Asteraceae) extracts and essential oil as an adulticide against Lutzomyia migonei (Diptera: Psychodidae) females, from a laboratory colony, in experimental conditions.

The salivary glands of two sand fly vectors of Leishmania: Lutzomyia migonei (França) and Lutzomyia ovallesi (Ortiz)(Diptera: Psychodidae).

Introduction: Leishmaniasis is a vector-borne disease transmitted by the intradermal inoculation of Leishmania (Kinetoplastida: Trypanosomatidae) promastigotes together with saliva during the bite of an infected sand fly.

Objective: The salivary glands were compared from two vector species, Lutzomyia ovallesi (Ortiz,1952) and Lutzomyia migonei (França,1920) (Diptera: Psychodidae).

Material And Methods: Protein profiles by SDS PAGE of salivary glands were compared among species as well as their development at several times post feeding.

[Repellent activity of plant essential oils against bites of Lutzomyia migonei (Diptera: Psychodidae)].

Natural repellents from plant extracts have demonstrated good efficacy against bites of some insect species. The present study evaluated the repellent effect of essential oils extracted from 8 plants species against bites of Lutzomyia migonei, the Leishmania vector. The essential oils were extracted by steam destillation in Clevenger chamber, from the following plants: Hyptis suaveolens, Pimenta racemosa, Piper marginatum, Monticalia imbricatifolia, Pseudognaphalium caeruleocanum, Espeletia shultzii, Plecthranthus amboinicus and Cinnamomun zeylanicum.

[Evaluation of knowledge and practice on tegumentary leishmaniasis in an endemic area of Venezuela].

Introduction: Leishmaniases constitutes a serious public health problem in many parts of the Americas. However, the populations exposed to leishmaniasis lack information about this disease. For this reason, educational assessments and interventions were deemed necessary to contribute to a greater impact of control measures.

Effect of blood source on the survival and fecundity of the sandfly Lutzomyia ovallesi Ortiz (Diptera: Psychodidae), vector of Leishmania.

Introduction: The reproductive potential of sandflies depends on various factors, one of which is the type of host available as blood source, which is important in determining their capacity to serve as vectors.

Objective: The present study evaluated the effect of the animal blood source on various biological parameters of Lutzomyia ovallesi (Ortiz) under laboratory conditions.

Materials And Methods: Two-day-old females from a L.