Results: 331

Isolation and characterization of bacteria associated with silkworm gut under antibiotic-treated larval feeding

Braz. j. biol; 84 (), 2024
Abstract The impact of antibiotics on growth, cocoon production was assessed in addition to isolation and characterization of bacteria associated with silkworm gut of infected larvae. Larval rearing was maintained at recommended conditions of temperature and humidity. Silkworm larvae showing abnormal sym...

Resistance of bmr energy sorghum hybrids to sugarcane borer and fall armyworm

Braz. j. biol; 84 (), 2024
Abstract The lower lignin content in plants species with energy potential results in easier cellulose breakdown, making glucose available for ethanol generation. However, higher lignin levels can increase resistance to insect attack. The objective of this work was to evaluate the susceptibility of a bmr-...

Infestation of Portulaca oleracea (Portulacaceae) plants by Neotuerta platensis (Lepidoptera: Noctuidae) larvae in Brazil: evaluations for five consecutive years

Braz. j. biol; 84 (), 2024
The bioecology and infestation aspects of Neotuerta platensis Berg, 1882 (Lepidoptera: Noctuidae) on plants are poorly known. This insect fed on the leaves of common purslane, Portulaca oleracea L. (Portulacaceae) for two consecutive years, which triggered its study in the following five years in Január...

Efficacy of Citrullus colocynthis seed extract on Earias vittella, Fabricius, (Lepidoptera: Noctuidae): environment sustainable approach

Braz. j. biol; 84 (), 2024
Abstract Earias vittellaFabricius, 1794 (Noctuidae: Lepidoptera) is deliberated to be one of the most destructive pests of cotton and okra vegetation in the world including Asia. The pest has established resistance to various synthetic insecticides. The use of bio-pesticide is one of the unconventional a...

Caracterização morfológica e morfométrica de estágios larvares de Strongyloides spp, ancilostomídeos e Angiostrongylus spp: subsídios para identificação em amostras ambientais

A identificação precisa de nematódeos de interesse médico-veterinário em amostras de solo ou alimentos é uma ação complexa, devido à grande diversidade de nematódeos no ambiente. O objetivo do estudo foi realizar a caracterização morfológica e morfométrica de diferentes estágios larvár...

Ocorrência de Cochliomyia hominivorax em bovinos no Maranhão, Brasil

Rev. bras. ciênc. vet; 30 (1), 2023
A bovinocultura possui grande importância na economia brasileira, entretanto, enfermidades afetam a produção, ocasionando perdas econômicas, como a miíase. O agente causador da miíase é Cochliomyia hominivorax, mosca-da-bicheira. Os agentes são aptos às regiões tropicais e subtropicais no Brasi...

Chemical composition, in vitro larvicidal and antileishmanial activities of the essential oil from Citrus reticulata Blanco fruit peel

Braz. j. biol; 83 (), 2023
Abstract Numerous studies have investigated the chemical composition and biological activities of essential oils from different Citrus species fruit peel, leaves and flowers. This paper aims to investigate the chemical composition, larvicidal and antileishmanial activities of essential oil from Citrus re...

Toxicity and larvicidal activity on Aedes aegypti of citronella essential oil submitted to enzymatic esterification

Braz. j. biol; 83 (), 2023
Abstract The essential oil of citronella (Cymbopogon winterianus) has several biological activities, among them the insect repellent action. Some studies showed that cinnamic acid esters can be applied as natural pesticides, insecticides and fungicides. In this context, the objective of the present work ...

How omnivory affects the survival and choices of earwig Doru luteipes (Scudder) (Dermaptera: Forficulidae)?

Braz. j. biol; 83 (), 2023
Abstract Doru luteipes (Scudder, 1876) is an omnivorous predator that finds different food resources in the corn plant: eggs of Spodoptera frugiperda (J.E. Smith, 1797), uredospores of Puccinia polysora (Underw, 1897), and pollen. Knowing the survival and food preferences of this predator is essential to...

Influence of garlic extract on larval performance and survival of juvenile angelfish Pterophyllum scalare during transport

Braz. j. biol; 83 (), 2023
Abstract The objective of this study was to evaluate the properties of garlic as a growth promoter in larvae of angelfish Pterophyllum scalare and its benefits during transport of juveniles of this species. The experiment was conducted in recirculation aquaculture system, consisting of 20 tanks of 40 L e...