Morphometry and distribution of sensilla on the antennae of Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae)

Bisotto-de-Oliveira, Ricardo; Redaelli, LR; Sant’Ana, Josué

doi:10.1590/s1519-566x2011000200009

Cited by 21 publications

(20 citation statements)

References 11 publications

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“…The Tephritidae are, together with the Drosophilidae, members of the Acalyptrata subsection of Brachyceran Diptera, and scanning electron microscopy (SEM) has revealed a spatial distribution of olfactory sensilla on the funiculus surface for C . capitata 37 , Anastrepha fraterculus 38 , and species in the Dacini tribe 32 , 39 – 41 that is roughly similar to the one observed in Drosophila . EAG signals were found to vary with the relative density of sensilla at the electrode location in C .…”

Section: Introductionsupporting

confidence: 57%

Current source density mapping of antennal sensory selectivity reveals conserved olfactory systems between tephritids and Drosophila

Jacob

Scolari

Delatte

et al. 2017

Sci Rep

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Ecological specialization of insects involves the functional and morphological reshaping of olfactory systems. Little is known about the degree to which insect sensitivity to odorant compounds is conserved between genera, tribes, or families. Here we compared the olfactory systems of six tephritid fruit fly species spanning two tribes and the distantly related Drosophila melanogaster at molecular, functional, and morphological levels. Olfaction in these flies is mediated by a set of olfactory receptors (ORs) expressed in different functional classes of neurons located in distinct antennal regions. We performed a phylogenetic analysis that revealed both family-specific OR genes and putative orthologous OR genes between tephritids and Drosophila. With respect to function, we then used a current source density (CSD) analysis to map activity across antennae. Functional maps mirrored the intrinsic structure of antennae observed with scanning electron microscopy. Together, the results revealed partial conservation of the olfactory systems between tephritids and Drosophila. We also demonstrate that the mapping of olfactory responses is necessary to decipher antennal sensory selectivity to olfactory compounds. CSD analysis can be easily applied to map antennae of other species and therefore enables the rapid deriving of olfactory maps and the reconstructing of the target organisms’ history of evolution.

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Section: Introductionsupporting

confidence: 57%

Current source density mapping of antennal sensory selectivity reveals conserved olfactory systems between tephritids and Drosophila

Jacob

Scolari

Delatte

et al. 2017

Sci Rep

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“…In spite of their abundance, only three subtypes were distinguished. The sensilla styloconica are well studied and several functions have been assigned to them in different insects: mechano‐, chemo‐, hygro‐, and/or thermoreceptors (Bissoto de Oliviera, Redaelli, & Santana, 2011; Schneider, 1964; Shields, 2009; Steinbrecht, 1998; Zacharuk, 1985). In aquatic insects sensilla styloconica are reported mainly as chemosensory organs, although little information is available (Gaino & Rebora, 1999).…”

Section: Discussionmentioning

confidence: 99%

Characterization and mapping of sensilla on the head appendages of noterid larvae (Coleoptera: Noteridae), and development of a preliminary biometric method for taxa delimitation

Urcola

Benetti

Alarie

et al. 2020

Journal of Morphology

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Larvae of the burrowing water beetle family Noteridae are distributed worldwide and are often abundant in a broad range of aquatic habitats, playing an important role in structuring freshwater communities, yet they have remained among the most poorly studied groups of aquatic beetles. Studies on sensillar equipment of aquatic insect larvae are largely lacking, despite their potential use in phylogeny and biometric identification methods. In this article, the external morphology and distribution of sensilla on the head appendages of first instar larvae of selected genera of Noteridae were examined using scanning electron microscopy. Seven main types were distinguished based on their morphological structure: basiconica (3 subtypes), campaniformia (2 subtypes), chaetica (7 subtypes), coeloconica (6 subtypes), coniform complex (2 subtypes), placodea, and styloconica (3 subtypes). The apex of the labial palpus was found to be the most variable and informative region in regard to the number, relative position, and topology of sensilla. Fingerprint models were, therefore, generated for this region in each of the studied genera, allowing their identification.

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“…In some species of Bactrocera, TS, CS and basiconic sensilla have been identified on tarsi (Zhang et al 2012); moreover, in Helicoverpa assulta, trichoid chemosensilla on the fifth tarsomere were reported (Zhang et al 2011). In Ceratitis and generally in Tephritidae, similar sensilla were observed in antennal segments (Mayo et al 1987;Dickens et al 1988;Bigiani et al 1989;Hu et al 2010;Bisotto-De-Oliveira et al 2011). CS were considered mechanoreceptors, and basiconic sensilla have been related to olfaction, while TS could have multiple (mechano, olfactory or gustatory) functions (Zhang et al 2012).…”

Section: Morphologymentioning

confidence: 99%

Morphological and electrophysiological analysis of tarsal sensilla in the medfly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae)

Loy

Solari

Isola

et al. 2016

Italian Journal of Zoology

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The Mediterranean fruit fly, Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae), is a polyphagous pest in horticulture, mainly targeting pomaceous and citrus fruits. To gain better knowledge about its chemosensory system related to taste, essential for behavioural strategies and localisation of host plants, we examined the tarsal external morphology by highresolution scanning electron microscopy, focusing on sensilla. Numerous trichoid and chaetica sensilla, related to taste and mechanoreceptor systems, and other types of sensilla are present in tarsal segments. The responses of specific trichoid chemosensilla were also studied through electrophysiological experiments by stimulation with sodium chloride, fructose and four bitter stimuli. Electrophysiological data allowed us to distinguish three types of different neurons: high ("H"), middle ("M") and small ("S"). Increasing concentrations of sodium chloride enhanced the activity of H cells, while fructose boosted M cells activity. On the contrary, S cells showed no increase in spike activity after stimulation with these substances. Bitter stimuli induced no significant response on these cells. Behavioural assays showed no statistical difference among the responses to sugars, bitter substances and citric acid. Our results on taste stimuli will be useful in increasing knowledge of Ceratitis chemoreception, fundamental in new integrated pest management.

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Morphometry and distribution of sensilla on the antennae of Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae)

Cited by 21 publications

References 11 publications

Current source density mapping of antennal sensory selectivity reveals conserved olfactory systems between tephritids and Drosophila

Current source density mapping of antennal sensory selectivity reveals conserved olfactory systems between tephritids and Drosophila

Characterization and mapping of sensilla on the head appendages of noterid larvae (Coleoptera: Noteridae), and development of a preliminary biometric method for taxa delimitation

Morphological and electrophysiological analysis of tarsal sensilla in the medfly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae)

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