Ocorrência de sirfídeos afidófagos (Diptera, Syrphidae) em Lavras, MG

Auad, Alexander Machado; Trevizani, Raphael

doi:10.1590/s0085-56262005000300013

Cited by 7 publications

(6 citation statements)

References 4 publications

(13 reference statements)

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“…The presence of aphidophagous syrphids is determined by climatic factors, availability of flowers and preys, habitat, and geographical area, which is positively correlated with aphid population TREVIZANI, 2005;BOKINA, 2012). Moreover, the ability of these insects to oviposite near aphid colonies and their voracity make them effective aphid predators (ALMOHAMAD et al, 2009).…”

Section: Resultsmentioning

confidence: 99%

Entomofauna associated with Avena sativa in southern Mato Grosso do Sul, Brazil

et al. 2019

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This study was aimed at examining the composition of insects and fluctuations in their populations in Avena sativa in southern Mato Grosso do Sul. The study was carried out at the experimental farm of the Federal University of Grande Dourados (FAECA) in Dourados, Mato Grosso do Sul, in 2014 and 2015, in an area of three hectares divided into 80 plots of 169 m2 each. The assessments were carried out weekly by sampling the area within a 0.25-m2 metal frame, totaling ten evaluations. Within the frame, ten plants were examined for aphids and all plants were inspected for other insects. Based on the faunistic analysis (abundance, constancy, frequency, and dominance), eight species were observed during the two years of study. The most frequent, abundant, dominant, and recurring species were Rhopalosiphum padi, Spodoptera frugiperda and dipterans of the family Syrphidae (hoverfly). The population of R. padi increased until approximately the 40th day after emergence (DAE), when the highest abundance of hoverflies was also observed. After that, the population of R. padi decreased. The aphid R. padi was the main insect observed in A. sativa during the two years of study but were naturally controlled by hoverflies; therefore, chemical intervention was not needed.

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Section: Resultsmentioning

confidence: 99%

Entomofauna associated with Avena sativa in southern Mato Grosso do Sul, Brazil

et al. 2019

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“…Ocyptamus gastrostactus Wiedemann, Allograpta exotica , and Pseudodorus clavatus Fabricius were the species of Syrphidae found. In Brazil, there are several reports of Syrphidae causing mortality of aphids including Allograpta neotropica Curran, O. gastrostactus , Syrphus phaetostigma Wiedemann, Ocyptamus dimidiatus Fabricius, and P. clavatus predating aphids in citrus, kale, cucumber, wheat and potato (Auad & Trevizani, 2005). In general, Syrphidae larvae feed on 660 to 1140 third instar nymphs during their larval development (Tenhumberg & Poehling, 1995; Soleyman-Nezhadiyan & Laughlin, 1998) and play an important role in aphid regulation (Michaud & Belliure, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Exemplars of parasitized L. erysimi were collected in the evaluated plants and in other plants of the crop and placed in 100-ml plastic pots for the emergence of the parasitoids in the laboratory. Specimens of predators and parasitoids were maintained in 70% alcohol and identified according to the literature (Auad & Trevizani, 2005; Rakhshani et al , 2008). Fungi infected aphids were mounted on microscope slides to identify the entomopathogens.…”

Section: Methodsmentioning

confidence: 99%

Natural factors regulating mustard aphid dynamics in cabbage

Fidelis

Farias

Silva

et al. 2018

Bull. Entomol. Res.

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Lipaphis erysimi (L.) Kaltenbach (Hemiptera: Aphididae) is one of the most important pests of brassica crops, mainly causing losses due to sap sucking, toxin injection and viral transmission. Knowledge about the main natural factors that regulate populations of this pest, as well as its critical mortality stage, is crucial for the development of integrated pest management of L. erysimi. Here, we determined the critical stage and key mortality factors for L. erysimi in cabbage using an ecological life table. Causes of mortality at each stage of L. erysimi development were monitored daily in the field for seven seasons. From the experimental data, we determined the key factor and critical stage of mortality through correlation and regression analyses. The nymphal stage, especially first instar nymphs, was critical for L. erysimi mortality. The key mortality factors were, in descending order of importance, physiological disturbances and predation by Syrphidae, Coccinellidae and Solenopsis ants. Therefore, control measures should target early stages of L. erysimi and the use of cabbage cultivars that have negative effects against L. erysimi may be a promising strategy for its management. Our results may be useful for plant geneticists who could develop new cabbage cultivars based on these findings. In addition, conservation measures of the main predators of L. erysimi may contribute to the natural control of this pest.

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“…Fungi‐infected aphids were mounted on microscope slides to identify the entomopathogens. Parasitoids and predators were assembled and identified according to the literature (Auad & Trevizani, ; Rakhshani et al, ).…”

Section: Methodsmentioning

confidence: 99%

Contributions of climate, plant phenology and natural enemies to the seasonal variation of aphids on cabbage

Fidelis

Farias

Lopes

et al. 2019

J Applied Entomology

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Brevicoryne brassicae (L), Lipaphis erysimi (Kalt) and Myzus persicae (Sultzer) (Homoptera: Aphididae) form the aphid complex that causes great losses in Brassicaceae in tropical and subtropical regions. Knowledge of their population dynamics is important for the development of integrated pest management programmes. This study aimed to investigate the effects of cabbage phenology, climatic factors and natural enemies populations on the dynamics of these organisms, and the factors regulating their predators’ occurrence. The densities of aphids and their natural enemies and the climate were monitored for two years in 16 cabbage crops. The highest densities of the aphids occurred during periods of relative humidity (RH) drop, a condition that affects them positively. Regarding the predators, the factors affecting their abundance varied but RH was positively related to most of them. This study provides relevant insights into the factors that regulate the aphids in cabbage and for the decision‐making process of control of these severe pests.

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Ocorrência de sirfídeos afidófagos (Diptera, Syrphidae) em Lavras, MG

Cited by 7 publications

References 4 publications

Entomofauna associated with Avena sativa in southern Mato Grosso do Sul, Brazil

Entomofauna associated with Avena sativa in southern Mato Grosso do Sul, Brazil

Natural factors regulating mustard aphid dynamics in cabbage

Contributions of climate, plant phenology and natural enemies to the seasonal variation of aphids on cabbage

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