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Antonio Euzebio Goulart Santana - One of the best experts on this subject based on the ideXlab platform.
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morphology and distribution of antennal sensilla of automeris liberia lepidoptera saturniidae
Micron, 2019Co-Authors: Kelly Barbosa Da Silva, Chryslane Barbosa Da Silva, Karlos Antonio Lisboa Ribeiro, Jeniffer Mclaine Duarte De Freitas, Johnnatan Duarte De Freitas, Gilson Sanchez Chia, Ricardo Salles Tinoco, Joao Gomes Da Costa, Henrique Fonseca Goulart, Antonio Euzebio Goulart SantanaAbstract:The lepidopteran species Automeris liberia from the Saturniidae family is a polyphagous Insect responsible for defoliating plants, such as the oil palm (Elaeis guineensis Jaquim). The antennae of Insects play an important role in survival in various environments. Antennae are the main olfactory and sensory organs of Insects and have different sensilla to detect chemical cues, movement, humidity and temperature. The olfactory structures present in the antennae are responsible for certain Insect behavior, which is influenced by chemical Communication. The morphology, distribution and location of the sensilla in the antennae of male and female A. liberia were investigated by scanning electron microscopy to understand the olfactory mechanisms relevant to Insect-Insect Communication and Insect-plant Communication, among others. The results showed that the flagellum, scape and pedicel length and the number of antennomeres differed between the sexes and demonstrating the existence of sexual dimorphism in the antennae males (bipectinate) and females (filiform). According to the morphological data, seven types of sensilla were identified along the surface of the antennae, classified as trichodea, chaetica, basiconica, coeloconica, squamiformia, styloconica and Bohm's bristles. Among the sensilla chaetica, basiconica and Bohm's bristles, two subtypes based on length were identified in both sexes. The sensilla trichodea exhibited dimorphism since three subtypes were observed in males, while in females, only one subtype was observed, according to the length of the sensilla. Sensilla trichodea subtypes I and II were specific to males, while subtype III was observed in both sexes. These types of sensilla are involved in the recognition of pheromone molecules. Therefore, morphological study of the localization of the sensilla in the antennae will provide useful and relevant results for electrophysiological studies and behavioral tests. This information can help to understand the chemical Communication of Insects and helps in research directed strategies for pest control.
Kelly Barbosa Da Silva - One of the best experts on this subject based on the ideXlab platform.
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morphology and distribution of antennal sensilla of automeris liberia lepidoptera saturniidae
Micron, 2019Co-Authors: Kelly Barbosa Da Silva, Chryslane Barbosa Da Silva, Karlos Antonio Lisboa Ribeiro, Jeniffer Mclaine Duarte De Freitas, Johnnatan Duarte De Freitas, Gilson Sanchez Chia, Ricardo Salles Tinoco, Joao Gomes Da Costa, Henrique Fonseca Goulart, Antonio Euzebio Goulart SantanaAbstract:The lepidopteran species Automeris liberia from the Saturniidae family is a polyphagous Insect responsible for defoliating plants, such as the oil palm (Elaeis guineensis Jaquim). The antennae of Insects play an important role in survival in various environments. Antennae are the main olfactory and sensory organs of Insects and have different sensilla to detect chemical cues, movement, humidity and temperature. The olfactory structures present in the antennae are responsible for certain Insect behavior, which is influenced by chemical Communication. The morphology, distribution and location of the sensilla in the antennae of male and female A. liberia were investigated by scanning electron microscopy to understand the olfactory mechanisms relevant to Insect-Insect Communication and Insect-plant Communication, among others. The results showed that the flagellum, scape and pedicel length and the number of antennomeres differed between the sexes and demonstrating the existence of sexual dimorphism in the antennae males (bipectinate) and females (filiform). According to the morphological data, seven types of sensilla were identified along the surface of the antennae, classified as trichodea, chaetica, basiconica, coeloconica, squamiformia, styloconica and Bohm's bristles. Among the sensilla chaetica, basiconica and Bohm's bristles, two subtypes based on length were identified in both sexes. The sensilla trichodea exhibited dimorphism since three subtypes were observed in males, while in females, only one subtype was observed, according to the length of the sensilla. Sensilla trichodea subtypes I and II were specific to males, while subtype III was observed in both sexes. These types of sensilla are involved in the recognition of pheromone molecules. Therefore, morphological study of the localization of the sensilla in the antennae will provide useful and relevant results for electrophysiological studies and behavioral tests. This information can help to understand the chemical Communication of Insects and helps in research directed strategies for pest control.
Wheatcroft David - One of the best experts on this subject based on the ideXlab platform.
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Experience modulates an Insect's response to anthropogenic noise
'Oxford University Press (OUP)', 2020Co-Authors: Gallego-abenza Mario, Mathevon Nicolas, Wheatcroft DavidAbstract:In response to anthropogenic noise, vertebrates express modified acoustic Communication signals either through individual plasticity or local population adaptation. In contrast, how Insects respond to this stressor is poorly studied. Field crickets Gryllus bimaculatus use acoustic signals to attract and locate mates and are commonly found in noisy roadside environments, offering a powerful system to study the effects of anthropogenic noise on Insect Communication. Rapid repetition of sexual calls (chirps) is essential to attract females, but calling incurs energetic costs and attracts predators. As a result, males are predicted to reduce calling rates when background noise is high. Here, we combine observations and experimental playbacks to show that the responses of field cricket males to anthropogenic noise also depend on their previous experience with passing cars. First, we show that males living on highway edges decrease their chirp rate in response to passing cars. To assess whether this behavioral response depends on previous exposure to car noise, we then broadcast recordings of car noise to males located at different distances from the road and, therefore, with different previous exposure to car noise. Although all tested individuals responded to broadcasted traffic noise, males closest to the road decreased their chirp rate less than individuals calling further from the road. These results suggest that regular exposure to anthropogenic noise may decrease individuals' sensitivity and behavioral responses to noise, allowing them to maintain effective signaling rates. Behavioral plasticity modulated by experience may thus allow some Insect species to cope with human-induced environmental stressors
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Data from: Experience modulates an Insect’s response to anthropogenic noise
2019Co-Authors: Gallego-abenza Mario, Mathevon Nicolas, Wheatcroft DavidAbstract:In response to anthropogenic noise, vertebrates express modified acoustic Communication signals either through individual plasticity or local population adaptation. In contrast, how Insects respond to this stressor is poorly studied. Field crickets Gryllus bimaculatus use acoustic signals to attract and locate mates and are commonly found in noisy roadside environments, offering a powerful system to study the effects of anthropogenic noise on Insect Communication. Rapid repetition of sexual calls (chirps) is essential to attract females, but calling incurs energetic costs and attracts predators. As a result, males are predicted to reduce calling rates when background noise is high. Here, we combine observations and experimental playbacks to show that the responses of Field cricket males to anthropogenic noise also depend on their previous experience with passing cars. First, we show that males living on highway edges decrease their chirp rate in response to passing cars. To assess whether this behavioural response depends on previous exposure to car noise, we then broadcast recordings of car noise to males located at different distances from the road and, therefore, with different previous exposure to car noise. Although all tested individuals responded to broadcasted traffic noise, males closest to the road decreased their chirp rate less than individuals calling further from the road. These results suggest that regular exposure to anthropogenic noise may decrease individuals' sensitivity and behavioural responses to noise, allowing them to maintain effective signalling rates. Behavioural plasticity modulated by experience may thus allow some Insect species to cope with human-induced environmental stressors
Dominique Fresneau - One of the best experts on this subject based on the ideXlab platform.
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Role of cuticular hydrocarbons in the chemical recognition between ant species in the Pachycondyla villosa species complex.
Journal of insect physiology, 2005Co-Authors: Christophe Lucas, D.b. Pho, J.m. Jallon, Dominique FresneauAbstract:Cuticular hydrocarbons (HCs) play important roles in Insect Communication but few studies clearly demonstrate the direct link between HCs and nestmate recognition. Therefore, cuticular lipids were extracted from ants, their HC and non-HC fractions as well as the three principal classes of HCs (n-alkanes, branched alkanes and alkenes) were purified and tested using an immobilizing "joust" device which allowed quantification of early pairwise behavioural responses, mandibular opening and antennal retraction, without occurrence of subsequent damages as in classic dyadic encounters. Chemical recognition of ants was studied at three levels of interactions (intra-colonial, intra-specific and inter-specific). Three closely related species already chemically characterized were used: Pachycondyla villosa (Pv), P. inversa (Pi) and P. subversa (Ps). Each species had its own behavioural responses. Moreover, responses of Pi and Ps towards Pv were significantly longer, than they were between themselves whereas Pv ants were equally aggressive towards Pi and Ps. These differences are in agreement with the results of the cluster analysis of the cuticular HCs profiles that place Pi closer to Ps. In support of the idea that components of cuticular lipids profiles are important for recognition, we found that only the HC fraction and its branched subfraction elicited a behavioural response of Ps workers. It is suggested that internally branched methyl- and dimethylalkanes are involved in recognition behaviour.
Ricardo Salles Tinoco - One of the best experts on this subject based on the ideXlab platform.
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morphology and distribution of antennal sensilla of automeris liberia lepidoptera saturniidae
Micron, 2019Co-Authors: Kelly Barbosa Da Silva, Chryslane Barbosa Da Silva, Karlos Antonio Lisboa Ribeiro, Jeniffer Mclaine Duarte De Freitas, Johnnatan Duarte De Freitas, Gilson Sanchez Chia, Ricardo Salles Tinoco, Joao Gomes Da Costa, Henrique Fonseca Goulart, Antonio Euzebio Goulart SantanaAbstract:The lepidopteran species Automeris liberia from the Saturniidae family is a polyphagous Insect responsible for defoliating plants, such as the oil palm (Elaeis guineensis Jaquim). The antennae of Insects play an important role in survival in various environments. Antennae are the main olfactory and sensory organs of Insects and have different sensilla to detect chemical cues, movement, humidity and temperature. The olfactory structures present in the antennae are responsible for certain Insect behavior, which is influenced by chemical Communication. The morphology, distribution and location of the sensilla in the antennae of male and female A. liberia were investigated by scanning electron microscopy to understand the olfactory mechanisms relevant to Insect-Insect Communication and Insect-plant Communication, among others. The results showed that the flagellum, scape and pedicel length and the number of antennomeres differed between the sexes and demonstrating the existence of sexual dimorphism in the antennae males (bipectinate) and females (filiform). According to the morphological data, seven types of sensilla were identified along the surface of the antennae, classified as trichodea, chaetica, basiconica, coeloconica, squamiformia, styloconica and Bohm's bristles. Among the sensilla chaetica, basiconica and Bohm's bristles, two subtypes based on length were identified in both sexes. The sensilla trichodea exhibited dimorphism since three subtypes were observed in males, while in females, only one subtype was observed, according to the length of the sensilla. Sensilla trichodea subtypes I and II were specific to males, while subtype III was observed in both sexes. These types of sensilla are involved in the recognition of pheromone molecules. Therefore, morphological study of the localization of the sensilla in the antennae will provide useful and relevant results for electrophysiological studies and behavioral tests. This information can help to understand the chemical Communication of Insects and helps in research directed strategies for pest control.