Results: 63

Exposure of Apis mellifera (Hymenoptera: Apidae) to pollen grains of soybean plants (Glycine max L) originated from treated seeds

Arq. Inst. Biol; 87 (), 2020
Residues of plant protection products have been reported in floral resources such as pollen, but the potential risks of pollinator exposure are still unclear. Therefore, studies are needed to assess the risk of exposure/intoxication of bees, as they collect these resources to maintain their colony. The p...

Diversity of parasitoid wasps in conventional and organic guarana (Paullinia cupana var. sorbilis) cultivation areas in the Brazilian Amazon

Acta amaz; 49 (4), 2019
We surveyed parasitoid wasps (Hymenoptera) in two guarana plantations in the central Brazilian Amazon (one conventionally, and one organically managed), as well as in adjacent forest and edge areas between crop and forest. We evaluated differences between management systems in parasitoid diversity and ab...

Floral visitors of canola (Brassica napus L. ) hybrids in Cerrado Mineiro region, Brazil

Arq. Inst. Biol; 86 (), 2019
The objective of this study was to verify floral visitors of canola in the Triângulo Mineiro region, Minas Gerais, Brazil. A completely randomized plot design with two hybrids and 10 replicates was used, totaling 20 plots. The survey of floral visitors was made during 10 days. Faunal analyses of the col...

Do parasitoid density and host age affect the parasitism of Palmistichus elaeisis (Hymenoptera: Eulophidae)?

Arq. Inst. Biol; 86 (), 2019
The incidence of lepidopteran defoliants is one of the environmental factors that regulate the productivity of cultivated forests. The parasitoid Palmistichus elaeisis (Hymenoptera: Eulophidae) has significant importance for its efficiency in the parasitism of pupae of these Lepidoptera. The objective of...

Biología y comportamiento de Palpita flegia (Lepidoptera: Crambidae), mariposa blanca de las Tevetias (Apocynaceae)

Rev. biol. trop; 66 (4), 2018
Resumen Palpita flegia (Cramer 1777) (Lepidoptera, Crambidae), es un insecto plaga que se alimenta del follaje de Cascabela thevetia (L.) Lippold., originario de México. Para el manejo integrado de la especie se requieren conocimientos sobre su biología y comportamiento. El objetivo del trabajo fue det...

Domestic infestation by Sclerodermus sp. with associated skin manifestation

An. bras. dermatol; 93 (4), 2018
Abstract: Sclerodermus sp. is an aculeate insect (Hymenoptera: Bethylidae), measuring 2-4 mm in length. It is a parasitoid and needs termites as hosts to complete its life cycle. It is found in a wide variety of woods and may accidentally sting humans who come near affected wooden objects. A 50-year-old ...

Hymenoptera stings in Brazil: a neglected health threat in Amazonas State

Abstract INTRODUCTION: Hymenoptera injuries are commonly caused by stinging insects. In Amazonas state, Brazil, there is no information regarding distribution, profile, and systemic manifestations associated with Hymenoptera injuries. METHODS: This study aimed to identify risk factors for systemic ma...

Inhibition of symbiote fungus of the leaf cutter ant Atta sexdens by secondary metabolites from the bacterium Xenorhabdus szentirmaii associated with entomopathogenic nematodes

Arq. Inst. Biol; 85 (), 2018
Leaf-cutter ants (Hymenoptera: Formicidae) have evolved as dominant herbivores on the American continent. These social insects remove the leaves of economically important plant species to maintain their colony’s food reserves, the symbiotic fungus Leucocoprinus gongylophorus, a basidiomycete. Such fung...

Density of Diachasmimorpha longicaudata (Ashmead) and host Ceratitis capitata (Wied) larvae for the increase of parasitoid female production

Arq. Inst. Biol; 85 (), 2018
The objective of the present study was to evaluate the ratio of Ceratitis capitata larvae/female of Diachasmimorpha longicaudata that results in the increase of parasitism and the production of females in the progeny. We used 8-day-old copulated D. longicaudata females with oviposition parasite experienc...

Guía de práctica clínica: Alergia a picadura de himenópteros en pediatría: actualización de 2017
Guidelines for Clinical Practice: Hymenoptera sting allergy in children: 2017 update

Arch. argent. pediatr; 115 (5), 2017
Las picaduras por himenópteros son frecuentes en la infancia. La mayoría producen reacciones locales, consecuencia de un mecanismo infamatorio, no alérgico, no tienen progresión y se resuelven con simples medidas terapéuticas. Las reacciones más extensas, generalmente, están asociadas a mecanismos...