Diamondback moth, Plutella xylostella, is considered the most important pest species of brassica crops and Euborellia annulipes can exhibit potential for its control. This work recorded the consumption of 4 th-instar larvae and pupae of P. xylostella by nymphs and adult females of the ring-legged earwig E. annulipes at different ages: 2, 4, 6, 8 and 10 days old. Nymphs in the 3 rd-instar and females of E. annulipes consumed daily more P. xylostella larvae than pupae. The consumption of diamondback moth pupae became constant as the 5 th-instar nymphs of the predator develop. In the other hand, the consumption of larvae decreases when nymphs are closer to molt. Female, regardless of its age, consumed more larvae than pupae of P. xylostella.
Fruit flies are pests of great agricultural concern, as they cause serious damage to the global fruit production. However, there are potential entomophagous organisms that can reduce the population of pest species such as Ceratitis capitata. Among the voracious and entomophagous Dermaptera predators, the species Pygidicrana v-nigrum displays a strong predatory potential to improve the agricultural handling by assisting the reduction of agrochemical use. This study aims to evaluate the biological development and quantification of P. v-nigrum consumption and predation of C. capitata during the fruit fly's immature stages. Larvae from the 3 rd instar and pupae of the Mediterranean fruit fly were used, where biological parameters were analyzed, including the duration and nymphal viability, adult insect size (length), sex ratio, survival of adults and egg production, and the ethology Original Research Article
The diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae), is the main pest of brassica crops worldwide. The ringlegged earwig, Euborellia annulipes (Lucas) (Dermaptera: Anisolabididae), has been reported as a potential predator of lepidopteran larvae, including this pest, and may therefore be used for biological control. Knowledge about predator-prey interactions is important to establish pest management strategies. Therefore, the objective of this work was to evaluate the influence of the developmental stage (larva and pupa) and density of P. xylostella on the preference and functional response of E. annulipes adult females. We used choice and no-choice tests to evaluate the foraging behavior and preference of E. annulipes on DBM life stages and varied prey density to assess the type of functional response of the ringlegged earwig. Larvae were preferred over pupae, and the predator's functional response was type II for both prey stages. Our results report the potential of E. annulipes as a biocontrol agent of P. xylostella. Understanding their interactions may help in decision-making and optimization of integrated management strategies.
Ecosystem engineer species can affect the assembly and maintenance of biological communities by altering local environmental conditions. Several palm tree species play this role in changing the surrounding environment mainly through the fall of entire rachis and the formation of a thick and homogeneous leaf litter layer beneath the canopy. However, their impact on soil animal communities remains unclear. In particular, soil organisms (e.g. ants) can be negatively affected by palm-driven local changes, since they are especially susceptible to leaf litter changes. Our objective was to test if the presence of
ResumoAs espécies engenheiras do ecossistema podem afetar a constituição e manutenção das comunidades biológicas, alterando as condições ambientais locais. Várias espécies de palmeiras desempenham este papel na mudança do ambiente circundante, principalmente através da queda de raques inteiras e da formação de uma camada de folhas espessa e homogênea sob o dossel. Entretanto, seu impacto sobre as comunidades animais do solo permanece pouco claro. Em particular, os organismos do solo (por exemplo formigas) podem ser afetados negativamente por mudanças locais provocadas pelas palmeiras, uma vez que são especialmente suscetíveis a mudanças na serrapilheira. Nosso objetivo era testar se a presença de palmeiras reduz a diversidade alfa e beta das comunidades de formigas a níveis taxonômicos e morfométricos. Também testamos se a área do sub‐bosque das palmeiras (pilha de restos abaixo da copa das palmeiras) e a densidade populacional reduzem as diversidades alfa e beta das comunidades de formigas (em níveis taxonômicos e morfométricos) nas florestas tropicais. Para isso, descrevemos padrões de diversidade taxonômica e morfométrica de comunidades de formigas em um remanescente da Mata Atlântica (nordeste do Brasil), utilizando os números de Hill em dois hábitats: sub‐bosques em torno da espécie de palmeira Acrocomia intumescens, e sub‐bosques florestais sem A. intumescens (sub‐bosque sem palmeiras). Nossas principais descobertas foram: (1) A diversidade taxonômica e morfométrica alfa era semelhante entre o sub‐bosque com A. intumescens e o sub‐bosque sem palmeiras; (2) As comunidades de formigas em sub‐bosques sem palmeiras apresentaram maior diversidade beta do que as comunidades de sub‐bosques com A. intumescens considerando tanto as espécies raras quanto os atributos morfométricos; (3) a área de sub‐bosque de A. intumescens afetou negativamente as espécies comuns e dominantes de formigas; e (4) a interação entre a área de sub‐bosque e a densidade populacional de A. intumescens afetou as espécies dominantes de formigas de forma complexa e os resultados dependem do equilíbrio entre ambos os preditores. Nossas descobertas apontam para um papel importante das palmeiras como engenheiros do ecossistema na redução da biodiversidade das formigas e na mudança da assinatura funcional das florestas tropicais modificadas pelo homem.
Resumo. Objetivou-se avaliar o desenvolvimento biológico das fases imaturas de Ceraeochrysa cubana Hagen alimentada com ovos de Ephestia kueniella Zeller submetida a diferentes dietas com ingredientes em diferentes concentrações (%): Farinha de milho (50%) + Farinha de trigo (50%) + Lêvedo de cerveja (3%); Farinha de milho transgênico (fubá) (50%) + Farinha de Trigo (50%) + Lêvedo de cerveja (3%); Farinha de rosca (97%) + Lêvedo de cerveja (3%); Farinha de rosca (48,5%) + Farinha de trigo (48,5%) + Lêvedo de cerveja (3%); Farinha de arroz (97%) + Lêvedo de cerveja (3%); Farinha de arroz (48,5%) + Farinha de trigo (48,5%) + Lêvedo de cerveja (3%); Farinha de aveia (97%) + Lêvedo de cerveja (3%); Farinha de aveia (48,5%) + Farinha de trigo (48,5%) + Lêvedo de cerveja (3%). Avaliaram-se os períodos de cada estádio larval, larval completo, pré-pupa+pupa, larva-adulto, razão sexual, viabilidades larval e pupal. Dietas com farinha de aveia para a traçapromovem maior tempo para o predador alcançar a fase adulta, com farinha de arroz baixa razão sexual e com farinha de rosca baixa viabilidade pupal. Dietas contendo farinha de milho são as mais recomendadas para E. kuehniella, visando à criação de C. cubana.Influence of feeding of Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) on development of Ceraeochrysa cubana Hagen (Neuroptera: Chrysopidae)Abstract. Aimed to evaluate the biological development of Ceraeochrysa cubana Hagen immature stages fed on eggs of the mothsubmitted to different food substrates with ingredients on different concentrations (%): Corn flour (50%) + Wheat flour (50%) + Brewer’s yeast (3%); Transgenic corn flour (50%) + Wheat flour (50%) + Brewer’s yeast (3%); Breadcrumbs (97%) + Brewer’s yeast (3%); Breadcrumbs (48.5%) + Wheat flour (48.5%) + Brewer’s yeast (3%); Rice flour (97%) + Brewer’s yeast (3%); Rice flour (48.5%) + Wheat flour (48.5 %) + Brewer’s yeast (3%); Oatmeal (97%) + Brewer’s yeast (3%); Oatmeal (48.5%) + Wheat flour (48.5%) + Brewer’s yeast (3%). We evaluated the period of each larval stage, complete larval period, pre pupal+pupal period, and larva to adulthood period, larval and pupal feasibility. Diets with oatmeal provided for moth promote greater time for the predator reach adulthood, with rice flour low sex ratio and with breadcrumbs low pupal feasibility. Diets formulated with corn flours + brewer’s yeast are most recommended for Ephestia kuehniella Zeller, aiming C. cubana mass rearing.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
334 Leonard St
Brooklyn, NY 11211
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.