Insect vision models under scrutiny: what bumblebees (Bombus terrestris terrestris L.) can still tell us

Telles, Francismeire Jane; Rodríguez‐Gironés, Miguel A.

doi:10.1007/s00114-014-1256-1

Cited by 21 publications

(19 citation statements)

References 78 publications

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“…Models designed to explain the neuronal processing of color vision include ideas that assume that noise is limited to the receptor level and downstream processing is noise-free (“RNL”, receptor noise limited model) and that discrimination between wavelengths occurs through color-opponent neurons (“COC”, color-opponent coding). The different parallel pathways to process colors might explain why the different models are only partially successful depending on the behavioral task [88]. …”

Section: Conclusion and Perspectivementioning

confidence: 99%

Retinal perception and ecological significance of color vision in insects

Lebhardt

Desplan

2017

Current Opinion in Insect Science

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Color vision relies on the ability to discriminate different wavelengths and is often improved in insects that inhabit well-lit, spectrally rich environments. Although the Opsin proteins themselves are sensitive to specific wavelength ranges, other factors can alter and further restrict the sensitivity of photoreceptors to allow for finer color discrimination and thereby more informed decisions while interacting with the environment. The ability to discriminate colors differs between insects that exhibit different life styles, between female and male eyes of the same species, and between regions of the same eye, depending on the requirements of intraspecific communication and ecological demands.

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Section: Conclusion and Perspectivementioning

confidence: 99%

Retinal perception and ecological significance of color vision in insects

Lebhardt

Desplan

2017

Current Opinion in Insect Science

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“…(). We fixed a minimum threshold of 0·27 just noticeable differences (JNDs) for colour discrimination by bees (Telles & Rodríguez‐Gironés ) and 1·0 JNDs for hummingbirds (Vorobyev et al . ).…”

Section: Methodsmentioning

confidence: 99%

Flower colour and visitation rates of Costus arabicus support the ‘bee avoidance’ hypothesis for red‐reflecting hummingbird‐pollinated flowers

et al. 2015

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Summary Floral colour mediates plant–pollinator interactions by often signalling floral resources. In this sense, hummingbird‐pollinated flowers are frequently red‐coloured, and there are two tentative hypotheses to explain this pattern: 1. hummingbirds are attracted to red due its easier detection and 2. bees are sensorially excluded from red flowers. The second hypothesis is based on bees’ red colour blindness, which lead them to be less frequent and less important than hummingbirds as pollinators of red‐reflecting flowers. Here, we untangled the role of different flower traits mediating plant–pollinator interactions and empirically tested the above hypotheses. We chose Costus arabicus due to its synchronopatric white‐ and pink‐flowered individuals and its bee and hummingbird pollination system. Although pink flowers are not totally achromatic as pure red ones, they show an achromaticity degree that could drive bee exclusion. Specifically, we tested whether differences on red reflectance work attracting hummingbirds or excluding bees and the consequent implications for the plant's reproduction. Flower colour morphs of C. arabicus do differ neither in morphology nor in nectar sugar content. Moreover, white and pink flowers can be discriminated by the bees’ and hummingbirds’ colour vision system. Both groups are able to discriminate the red colour variation morph on the flower petals, the white flowers being more easily detected by bees and the pink flowers by hummingbirds. Bees preferentially visited the white flowers, whereas hummingbirds visited both colours at the same rate – both patterns corroborating the second hypothesis. Pollen loads deposited on stigmas did not differ between flower colour morphs, indicating that bees and hummingbirds play a similar role in the overall pollen deposition. However, bees are more likely to self‐pollinate than hummingbirds. Self‐pollination limits C. arabicus reproduction, and red‐reflecting flowers may be better pollinated by discouraging bee visitation. Therefore, the intraspecific colour variation is driving flowers to show colour‐related different levels of generalization. Our results support the ‘bee avoidance’ rather than the ‘hummingbird preference’ hypothesis. Sensory exclusion of bees seems to be the pressure for red‐reflecting flowers evolution, driving specialization in hummingbird‐pollinated flowers due to the costs of bee pollination on plant reproduction.

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“…Apesar dos modelos darem uma noção da percepção das cores pelas abelhas, é importante notar que o condicionamento experimental também pode melhorar a discriminação de cores pelas abelhas (Giurfa 2004). Além disso, como cada tipo de modelo visual diverge em suas premissas, o uso de um ou outro modelo deve ser cuidadosamente aplicado e justificado pelo pesquisador (Kemp et al 2015, Telles & Rodríguez-Gironés 2015, Gawryszewski 2018. Portanto, estes modelos servem como uma primeira abordagem das capacidades visuais dos polinizadores.…”

Section: Cores E Fragrâncias: Os Principais Sinais Floraisunclassified

Como Treinar Sua Abelha: Métodos Aplicados À Biologia Cognitiva Da Polinização

et al. 2020

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Resumo:As abelhas são os principais vetores bióticos da polinização, fenômeno extremamente importante para a manutenção dos sistemas naturais e também para a produção de alimentos. Durante décadas, estudos mostraram como as abelhas são notáveis quanto às suas capacidades cognitivas através de protocolos desenvolvidos para se entender o comportamento, aprendizado e memória desses insetos. O objetivo desta revisão é apresentar as bases dos experimentos de cognição em abelhas, descrevendo protocolos clássicos, novas abordagens e estudos empíricos mostrando como o treinamento de abelhas pode ser aplicado à diferentes questões na biologia da polinização.Palavras-chave: aprendizado; cognição; comportamento; memória; percepção. HOW TO TRAIN YOUR BEE: METHODS APPLIED TO THE COGNITIVE BIOLOGY OF POLLINATION.Bees are the major biotic pollination agents, an extremely important phenomenon to the maintenance of the natural systems and food production. For decades, studies have shown the remarkable cognition system of bees, and several protocols were developed to understand behavior, learning and memory of these insects. The aim of this review is to present the basis of cognitive experiments using bees as a model, describing classical protocols, new approaches and empiric studies showing how bee training can be applied to different questions on pollination biology.

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Insect vision models under scrutiny: what bumblebees (Bombus terrestris terrestris L.) can still tell us

Cited by 21 publications

References 78 publications

Retinal perception and ecological significance of color vision in insects

Retinal perception and ecological significance of color vision in insects

Flower colour and visitation rates of Costus arabicus support the ‘bee avoidance’ hypothesis for red‐reflecting hummingbird‐pollinated flowers

Como Treinar Sua Abelha: Métodos Aplicados À Biologia Cognitiva Da Polinização

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