Changes in social behavior are induced by pesticide ingestion in a Neotropical stingless bee

Boff, Samuel; Friedel, Anna; Mussury, Rosilda Mara; Lenis, Patricia Roseti; Raizer, Josué

doi:10.1016/j.ecoenv.2018.08.061

Cited by 31 publications

(20 citation statements)

References 29 publications

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“…However, in our study, we found no effects of FPF on other related behaviors: time spent foraging, time spent unloading food, number of dance bouts per nest visit, or number of dance circuits per dance bout. In stingless bees (Melipona quadrifasciata), neonicotinoid pesticides can reduce social behaviors such as antennation and trophallaxis (Boff et al, 2018). However, we found no evidence of impaired food exchange as measured in terms of unloading wait times for foragers bringing back 4 ppm FPF, which is not a neonicotinoid, in nectar.…”

Section: Discussioncontrasting

confidence: 60%

Flupyradifurone reduces nectar consumption and foraging but does not alter honey bee recruitment dancing

Pasberg

Diao

et al. 2021

Ecotoxicology and Environmental Safety

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Foraging is essential for honey bee colony fitness and is enhanced by the waggle dance, a recruitment behavior in which bees can communicate food location and quality. We tested if the consumption of nectar (sucrose solution) with a field-realistic concentration of 4 ppm flupyradifurone (FPF) could alter foraging behavior and recruitment dancing in Apis mellifera. Foragers were repelled by FPF. They visited the FPF feeder less often and spent less time imbibing sucrose solution (2.5 M, 65% w/w) with FPF. As a result, bees feeding on the FPF treatment consumed 16% less nectar. However, FPF did not affect dancing: there were no effects on unloading wait time, the number of dance bouts per nest visit, or the number of dance circuits performed per dance bout. FPF could therefore deter bees from foraging on contaminated nectar. However, the willingness of bees to recruit nestmates for nectar with FPF is concerning. Recruitment can rapidly amplify the number of foragers and could overcome the decrease in consumption of FPF-contaminated nectar, resulting in a net inflow of pesticide to the colony. FPF also significantly altered the expression of 116 genes, some of which may be relevant for the olfactory learning deficits induced by FPF and the toxicity of FPF.

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Section: Discussioncontrasting

confidence: 60%

Flupyradifurone reduces nectar consumption and foraging but does not alter honey bee recruitment dancing

Pasberg

Diao

et al. 2021

Ecotoxicology and Environmental Safety

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“…However, the negative effect that was observed directly after application of the agrochemical decreased over time, with similar visitation rates between control and treatment groups after 1 and 2 h of fungicide (2nd and 3rd rounds) application. The disappearance of pesticide toxicity on bees has also been observed in a social interaction context [ 17 ].…”

Section: Discussionmentioning

confidence: 99%

“…These findings may be explained by low flower exploitation [ 14 , 15 ] and poor pollination efficiency due to reduced ability to perform pollination [ 16 ]. Although studies reporting sub-lethal effects of pesticides have mostly focused on social bees, aspects of social interaction [ 17 ], foraging and memory ([ 18 ], but see [ 19 ]), and pollination itself [ 14 , 16 ], there is emerging evidence of behavioral impairment caused by pesticide exposure for solitary bees [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Environmental Display Can Buffer the Effect of Pesticides on Solitary Bees

Boff

Raizer

Lupi

2020

Insects

Self Cite

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Environmental quality (e.g., diversity of resource availability, nesting sites, environmental display) plays an important role in an animal’s life. While homogeneous environments can restrict organisms from developing activities such as food seeking (behavioral impairment), more complex environments allow animals to perform activities with learning and behavioral perfecting outcomes. Pesticides are known to affect the learning and foraging behaviors of bees; however, little is known about the counterbalance displayed by the environment. Herein, we conducted two experiments that simulated distinct environmental displays, in which the effects of a fungicide (IndarTM 5EW-febunconazole) on solitary bee foraging activities were tested. We found that the fungicide only impaired the activities of bees in one of the studied environments. The difference in visitation rates and flower exploitation of bees between the two different environmental displays led to changes in metrics of bee–flower networks across environments. Linkage density, a metric associated with pollination efficiency that is known to be impacted by different environments, differed across environments. Our results showed that ecological interaction network metrics can differ regarding the different environmental displays. This study indicates that environmental complexity helps balance the negative effects of pesticides on solitary bees and highlights the potential use of solitary bees as model organisms for experimental simulations of environmental change.

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“…Calculation of important kinematic measurements, including the tracked distance, is feasible when tracking animals, and the evaluation of complex behaviors can provide relevant insights about animal biology. For example, the evaluation of complex behaviors among social insects, such as changes in grooming and trophallaxis, is important for understanding their response to stress agents such as pesticides (Gandra, Amaral, Couceiro, Della Lucia, & Guedes, 2016;Boff, Friedel, Mussury, Lenis, & Raizer, 2018).…”

Section: Introductionmentioning

confidence: 99%

Ethoflow: computer vision and artificial intelligence-based software for automatic behavior analysis

Bernardes

Lima

Guedes

et al. 2020

Preprint

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Manual monitoring of animal behavior is time-consuming and prone to bias. An alternative to such limitations is the use of computational resources in behavioral assessments, such as a tracking system, to facilitate accurate and long-term evaluations. There is a demand for robust software that addresses analysis in heterogeneous environments (such as in field conditions) and evaluates multiple individuals in groups while maintaining their identities.The Ethoflow software was developed using computer vision and artificial intelligence (AI) tools to automatically monitor various behavioral parameters. A state-of-the-art object detection algorithm based on instance segmentation was implemented, allowing behavior monitoring in the field under heterogeneous environments. Moreover, a convolutional neural network was implemented to assess complex behaviors, thus expanding the possibilities of animal behavior analyses.The heuristics used to automatically generate training data for the AI models are described, and the models trained with these datasets exhibited high accuracy in detecting individuals in heterogeneous environments and assessing complex behavior. Ethoflow was employed for kinematic assessments and to detect trophallaxis in social bees. The software runs on the Linux, Microsoft Windows, and IOS operating systems with an intuitive graphical interface.In the Ethoflow algorithm, the processing with AI is separate from the other modules, which facilitates kinematic measurements on an ordinary computer and the assessment of complex behavior on machines with graphics processing units (GPUs). Thus, Ethoflow is a useful support tool for applications in biology and related fields.

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Changes in social behavior are induced by pesticide ingestion in a Neotropical stingless bee

Cited by 31 publications

References 29 publications

Flupyradifurone reduces nectar consumption and foraging but does not alter honey bee recruitment dancing

Flupyradifurone reduces nectar consumption and foraging but does not alter honey bee recruitment dancing

Environmental Display Can Buffer the Effect of Pesticides on Solitary Bees

Ethoflow: computer vision and artificial intelligence-based software for automatic behavior analysis

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