Possibilities to combine augmentative biological control using Trichogramma spp. egg parasitoids and conservation through habitat manipulation, for the management of rice leaffolder stemborer pests have received only cursory mention in literature. We reviewed information on use releases manipulation manage leaffolders stemborers rice. Stemborers become a priority since 1990s with research focus...

Globally, insect abundance and diversity are experiencing a rapid decline. Despite important inter-taxa geographical variability, this can entail an extinction of ecological interactions decay ecosystem functions. In study, we compared the spatial distribution, species composition Trichogramma spp. egg parasitoids (Hymenoptera: Trichogrammatidae) over 30-year time period in China. During 1980s ...

Studies on aggressiveness of parasitoids, as assessed by their parasitism against pests, used in biological-control programs are highly important to select the most suitable species and/or strain control insect pests. The present study investigated whether egg parasitoid Trichogramma galloi Zucchi, an efficient agent for sugarcane borer Diatraea saccharalis (Fabricius) Brazil, could be replaced...

conclusions the results of the present study revealed that soil resources of these areas were contaminated with opportunistic amoebas such as acanthamoeba and hartmannella spp. and this may lead to severe diseases in high-risk people, such as immunocompromised patients. background free-living amoebas are very abundant in nature, especially in water and soil. some species of amoebas cause seriou...

Wolbachia is an intracellular symbiont of invertebrates responsible for inducing a wide variety of phenotypes in its host. These host-Wolbachia relationships span the continuum from reproductive parasitism to obligate mutualism, and provide a unique system to study genomic changes associated with the evolution of symbiosis. We present the genome sequence from a parthenogenesis-inducing Wolbachi...

Toxicity of three modern insecticides (chlorantraniliprole, thiamethoxam and spinetoram) was examined against the first instar larvae of Pectinophora gossypiella (Saunders). The field rate and other two concentrations were used. The results showed that thiamethoxam was the most effective insecticide followed by chlorantraniliprole and spinetoram. The LC50,s were 8.9, 13.9 and 19 ppm for thiamet...

The objective of this work was the identification and differentiation of Trichogramma exiguum Pinto and Platner species, T. pretiosum Riley, and T. galloi Zucchi using sequences of the ITS2 region of ribosomal DNA. After extracting DNA from the studied species, a PCR reaction was performed, where the amplified samples were subjected to sequencing. The sequences obtained were submitted to a simi...