Effect of entomopathogens on Africanized Apis mellifera L. (Hymenoptera: Apidae)

Potrich, Michele; Silva, Rita T.L. da; Costa-Maia, Fabiana Martins; Lozano, Everton Ricardi; Rossi, Robson Marcelo; Colombo, Fernanda Caroline; Tedesco, Flavia Galvan; Gouvêa, Alfredo de

doi:10.1016/j.rbe.2017.12.002

Cited by 28 publications

(21 citation statements)

References 29 publications

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“…aizawai and kurstaki (GC-91 strain). Moreover, reduced survival of honeybee workers is observed for further Bt strains (Brighenti et al 2007;Libardoni et al 2018;Potrich et al 2018). However, the toxicity of MPCPs appears to depend on the tested exposure route (Soni and Thakur 2011).…”

Section: Introductionmentioning

confidence: 99%

“…However, the toxicity of MPCPs appears to depend on the tested exposure route (Soni and Thakur 2011). In contrast to exposure by feeding, some application methods, such as stripping or spraying of various MPCPs, do not affect the survival of bees under laboratory conditions (Brighenti et al 2007;Mommaerts et al 2010;Libardoni et al 2018;Potrich et al 2018). Mommaerts et al (2010) reported 100% worker mortality of tested bumble bees after 1 week of oral exposure at the maximum field recommended rate of Bacillus thuringiensis ssp.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the impacts of microbial plant protection products containing Bacillus thuringiensis on the survival of adults and larvae of the honeybee (Apis mellifera)

Steinigeweg

Alkassab

Beims

et al. 2021

Environ Sci Pollut Res

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This study was aimed at evaluating the effect of a microbial pest-controlling product (MPCP) with the active substance Bacillus thuringiensis ssp. aizawai (strain: ABTS-1857) on adults and larvae of honeybees. To determine the contamination levels of Bt spores in different matrices, a colony-feeding study under semi-field conditions was performed. Furthermore, two chronic adult trials and a chronic larval study were conducted under laboratory conditions to test the effects of different concentrations of the plant protection product (PPP) on the development and mortality. Possible modifications of the chronic oral toxicity test were assessed by additional pollen feeding. Our results showed that Bt spores were detected in all matrices over the entire test duration in different concentrations, decreasing over time. The survival of adult bees and larvae was negatively affected in laboratory conditions after a chronic exposure to the MPCP depending on the tested concentrations. Moreover, the earliest sign of bee mortality, resulting from exposure to ABTS-1857, was recorded only after 96 h at the highest tested concentration. Pollen feeding to adults significantly increased the survival of the treated bees. In conclusion, the PPP with the Bt strain ABTS-1857 showed an effect on the mortality of adults and larvae under laboratory conditions. Further studies with Bt-based PPPs under realistic field conditions are necessary to evaluate the potential risk of those MPCPs on honeybees.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of the impacts of microbial plant protection products containing Bacillus thuringiensis on the survival of adults and larvae of the honeybee (Apis mellifera)

Steinigeweg

Alkassab

Beims

et al. 2021

Environ Sci Pollut Res

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“…In a similar research, four methods were used to apply M. anisopliae and B. bassiana commercial preparations on honey bees. B. bassiana decreased the rates of alive bees in all methods, while M. anisopliae were less effective [35]. These results indicated that the application methods could also change the efficacy of entomopathogens.…”

Section: Discussionmentioning

confidence: 78%

Effects of Some Entomopathogen Fungi on Apis mellifera L. and Bombus terrestris L.

Akkoç

Karaca

2019

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Bees are essential elements of agricultural production because of their role in pollination. However, some practices during production, especially pesticide applications have negative effects on bee life and behaviours. In order to decrease the side effects of pesticides, alternative methods, especially biological control, gained importance. In this study, effects of preparations containing; Beaveria bassiana, Verticillium lecanii and Metarhizium anisopliae var. anisopliae, and also Chlorpyrifos-ethyl for comparison, on Apis mellifera and Bombus terrestris, were investigated. Preparations were applied with two different methods; directly as food and by spraying, with concentrations recommended by the producer companies. In the first method, bees were fed with 5 ml solutions of the preparations mixed with sucrose solution and antenna, wing, leg and abdomen movements of the bees were controlled and scored 4 hours after applications. In the second method, bees were sprayed with the preparations and mortality rates were found. As a result of feeding method, entomopathogen preparations slightly affected the movement of the honey bees, while Chlorpyrifos-ethyl, almost totally inhibited their movement. Similarly, entomopathogens had no harmful effect on the movement of bombus bees, but the insecticide totally inhibited their movement. In the spraying method, the insecticide killed all the individuals of both bee species, while entomopathogens caused the death of only a few individuals. Bazı Entomopatojen Fungusların Apis mellifera L. ve Bombus terrestris L.'e Etkileri Anahtar KelimelerBeauveria bassiana, Metarhizium anisopliae var. anisopliae, Verticillium lecanii, Bal arısı, Bombus arısı, Toksik etki Özet: Arılar tozlaşmadaki önemli rolleri nedeniyle bitkisel üretimin vazgeçilmez unsurlarıdır. Ancak üretim sırasındaki bazı işlemlerin, özellikle de pestisit uygulamalarının arıların canlılığı ve davranışları üzerinde olumsuz etkileri bulunmaktadır. Pestisitlerin istenmeyen etkilerini azaltmak amacıyla alternatif yöntemler, bunlar arasında da biyolojik mücadele önem kazanmıştır. Bu çalışmada Beaveria bassiana, Verticillium lecanii ve Metarhizium anisopliae var. anisopliae ile karşılaştırma ilacı olarak Chlorpyrifos-ethyl etken maddeli preparatların, Apis mellifera ve Bombus terrestris'e etkisi incelenmiştir. Preparatlar yedirme ve püskürtme şeklinde iki yöntemle, önerilen dozlarda uygulanmıştır. İlk yöntemde, sukroz çözeltisi ile karıştırılarak hazırlanmış preparatlar arılara 5'er ml yedirilmiş ve 4 saat sonra anten, kanat, bacak ve abdomen hareketleri kontrol edilerek puanlanmıştır. İkinci yöntemde ise preparatlar arılara püskürtülmüştür. Çalışma sonucunda, entomopatojenlere ait preparatlar ağız yoluyla uygulandığında bal arılarının hareketleri üzerinde çok düşük seviyede etkili olurken, Chlorpyrifosethyl arı hareketlerini neredeyse tamamen engellemiştir. Aynı şekilde, bombus arılarının hareketleri üzerinde entomopatojenlerin hiçbir olumsuz etkisi olmazken insektisit bunların hareketini de tamamen engellemiştir. Püskürtm...

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“…The evaluation of the mortality of the bees was performed 1,2,3,4,5,6,9,12,15,18,21,24,30,36,42,48,60,72,96,120, and 144 h after the incorporation of products in the feed (methodology adapted from Baptista et al 49 , Libardoni et al 33 . All the tests were performed in triplicates.…”

Section: Survival Bioassaymentioning

confidence: 99%

Possible interference of Bacillus thuringiensis in the survival and behavior of Africanized honey bees (Apis mellifera)

Libardoni

Neves

Abati

et al. 2021

Sci Rep

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Bacillus thuringiensis (Bt), an entomopathogenic bacterium, has been used as bioinsecticides for insect pest control worldwide. Consequently, the objective of this work was to evaluate the possible effects of commercial formulations of Bt products, Dipel and Xentari, on the survival and behavior of Africanized honey bees (Apis mellifera). Bioassays were performed on foragers and newly emerged (24-h-old) bees that received the products mixed in the food. Their survival and behavior were evaluated through the vertical displacement tests and the walk test, analyzed using software Bee-Move. Then, histological analysis of the mesenterium was performed. As control treatment was used sterile water. The honey bees’ survival was evaluated for between 1 and 144 h. No interference of B. thuringiensis, Dipel and Xentari, in the survival of Africanized honey bees were found. Only Xentari interfered with vertical displacement behavior of newly emerged (24-h-old) bees. Both the products tested were selective and safe for A. mellifera.

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Effect of entomopathogens on Africanized Apis mellifera L. (Hymenoptera: Apidae)

Cited by 28 publications

References 29 publications

Assessment of the impacts of microbial plant protection products containing Bacillus thuringiensis on the survival of adults and larvae of the honeybee (Apis mellifera)

Assessment of the impacts of microbial plant protection products containing Bacillus thuringiensis on the survival of adults and larvae of the honeybee (Apis mellifera)

Effects of Some Entomopathogen Fungi on Apis mellifera L. and Bombus terrestris L.

Possible interference of Bacillus thuringiensis in the survival and behavior of Africanized honey bees (Apis mellifera)

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