Comparative morphogenesis of sensilla: A review

Keil, Thomas A.

doi:10.1016/s0020-7322(97)00017-2

Cited by 92 publications

(84 citation statements)

References 74 publications

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“…The differentiation of neurons in white-eyed T. angustula pupae suggests that sensilla are in the early developmental stages, forming the sensillogenic region of the epidermis, such as that reported in the pupae of Antherae polyphemus Cramer, 1776 (Saturniidae: Saturniinae) (Keil and Steiner, 1990). The expression of the genes that play some roles in the sensilla differentiation affect the antennal epidermis before the pupal stage (Keil and Steiner, 1990;Keil, 1997).…”

Section: Discussionmentioning

confidence: 89%

“…The proneural genes induce the formation of precursor sensory cells, which, on differentiation, inhibit differentiation of the neighboring cells, resulting in the formation of sensillogenic epidermis by lateral inhibition (Campuzano and Modolell, 1992;Keil, 1997).…”

Section: Discussionmentioning

confidence: 99%

“…The sensilla of insects are usually formed by an oligocellular complex with one or more bipolar sensitive neurons associated with accessory thecogen, trichogen, and tormogen cells (Schneider, 1964;Keil, 1997;Euzebio et al, 2013). The thecogen cell envelops the neuron as a sheath for structural and metabolic support.…”

Section: Introductionmentioning

confidence: 99%

“…The trichogen cell partially covers the dendrite and is responsible for the production of the sensitive cuticular hair. The basal region of the cuticular hair has an elastic protein that is released by the tormogen cell (Schneider, 1964;Keil, 1997).…”

Section: Introductionmentioning

confidence: 99%

“…In general, the antennal sensilla develop in the pupal stage (Eichmuller and Schäfer, 1995;Schmidt and Kuhbandner, 1983) when a single precursor cell arises in the epidermal surface and differentiates into neurons and accessory cells, followed by the formation of sensory cuticle structures (Keil, 1997;Ray and Rodrigues, 1995;Azevedo et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Development of antennal sensilla of Tetragonisca angustula Latreille, 1811 (Hymenoptera: Meliponini) during pupation

et al. 2016

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The antennal sensilla are sensory organs formed by a group of neurons and accessory cells, which allow perception of environmental cues, which play a role as mechanoreceptors and chemoreceptors. This study describes the post-embryonic development of the antennal sensilla of the stingless Tetragonisca angustula (Hymenoptera: Meliponini) workers. The development of the antennal sensilla begins in the transition stage of the pre-pupae to white-eyed pupae. The sensilla are completely developed at the black-eyed pupae stage, but they are covered by the old cuticle. The sensilla are exposed to the environment only in newly emerged workers of T. angustula, but it is possible that environmental stimuli can be recognized due to the pores in the old cuticle.Keywords: placoid sensilla, trichodea sensilla, stingless bee, pupal development.Desenvolvimento das sensilas antenais de Tetragonisca angustula latreille, 1811 (Hymenoptera: Meliponini) durante a pupação ResumoAs sensilas antenais são órgãos sensoriais formados por um conjunto de neurônios que captam estímulos ambientais e células acessórias, desempenhando as funções de mecanorreceptores e quimiorrecepterores. Este trabalho descreve o desenvolvimento pós-embrionário das sensilas antenais de operárias das abelhas sem ferrão Tetragonisca angustula (Hymenoptera: Meliponini). O desenvolvimento das sensilas tem início na transição de pré-pupa para pupa de olho branco e estão completamente desenvolvidas no estágio de pupa de olho preto, mas ainda estão cobertas pela cutícula velha. As sensilas estão completamente expostas em operárias recém-emergidas de T. angustula, mas é possível que estímulos ambientais sejam percebidos em estágios anteriores devido aos poros presentes na cutícula velha.Palavras-chave: sensila placoide, sensila tricoide, abelha sem ferrão, desenvolvimento pupal.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of antennal sensilla of Tetragonisca angustula Latreille, 1811 (Hymenoptera: Meliponini) during pupation

et al. 2016

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Peripheral and central structures involved in insect gustation

Mitchell

Itagaki

Rivet

1999

Microsc. Res. Tech.

124

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Studies in insect gustation have a long history in general physiology, particularly with work on fly labellar and tarsal sensilla and in the general field of insect-plant interactions, where work on immature Lepidoptera and chrysomelid beetles has been prominent. Much more emphasis has been placed on the physiological characteristics of the sensory cells than on the central cellular mechanisms of taste processing. This is due to the fairly direct access for physiological experimentation presented by many taste sensilla and to the obvious importance of tastants in insect feeding and oviposition behaviour. In some of the insect models used for gustatory studies, advances have been made in understanding the basic morphology of the central neuropils involved in the first stages of taste processing. There is much less known about the physiology of interneurons involved. In this review, we concentrate on four insect models (Manduca sexta, Drosophila melanogaster, Neobellieria bullata (and other large flies), and Apis mellifera) to summarize morphological knowledge of peripheral and central aspects of insect gustation. Our views of current interpretations of available data are discussed and some important areas for future research are highlighted.

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