The Structure of Arthropod Chemoreceptors

Slifer, Eleanor H.

doi:10.1146/annurev.en.15.010170.001005

Cited by 304 publications

(145 citation statements)

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“…This made them very difficult to see and they can therefore be easily overlooked (Slifer, 1970;Cribb & Jones, 1995).…”

Section: Discussionmentioning

confidence: 99%

Scanning Electron Microscopy of Antennae of <I>Aphidoletes aphidimyza</I> (Diptera: Cecidomyiidae)

Zhang

Yang²

2008

Zoological Research

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Abstract:The morphology of antennae of Aphidoletes aphidimyza was observed with a scanning electron microscope. The results showed that both male and female were fourteen segmented, the male was approximately 2000μ m and the female was 1050 µm. Six types of sensillae on the antenna were observed, viz. chaetica (Ch), trichoidea (Tr), basiconica (Ba), cavity (Ca), styloid (St) and circumfila (Ci) on the antennae of A. aphidimyza. Sensillae Ch had a long external-process, with a base surrounded by membranous sockets and a length of about 67.5 µm. Sensillae Tr were distally curved and inserted into a depression, 61.0 µm long. Sensillae Ba were peg-like and 4.7 µm long on the antennae. Sensillae Ca were pit-like in appearance and the diameter of the pit was 1.2 µm. Sensilla St was found on the second sub-segment flagellum of the male antennae. The length of the sensilla was about 21 µm and the diameter was 1.5 µm. The circumfila, which are a unique type of sensilla found only on cecidomyiid antennae, formed loops around each of the antennal sub-segments, and were attached to the surface by a series of stalks. Sensilla St was only present on male antenna. The number of Ba and Tr was almost the same in both sexes. There were more Sensilla Ca on the male antenna than on the female, while there was more Ch on the female.

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“…This made them very difficult to see and they can therefore be easily overlooked (Slifer, 1970;Cribb & Jones, 1995).…”

Section: Discussionmentioning

confidence: 99%

Scanning Electron Microscopy of Antennae of <I>Aphidoletes aphidimyza</I> (Diptera: Cecidomyiidae)

Zhang

Yang²

2008

Zoological Research

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“…Due to their insertion in an enlarged pit, they are also referred as coeloconica (Scheneider 1964, Ochieng et al 2000. According to Slifer (1970), these sensilla are associated to an olfactory role, perceiving long distance stimuli. Their of their wall (Zacharuck 1985).…”

Section: Discussionmentioning

confidence: 99%

Morphology and distribution of antennal sensilla of Gryon gallardoi (Brèthes) (Hymenoptera: Scelionidae) females

Rocha¹,

Moreira²

2007

Neotrop. entomol.

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Neotropical Entomology 36(5): 721-728 (2007) Morfologia e Distribuição das Sensilas Antenais das Fêmeas de Gryon gallardoi (Brèthes) (Hymenoptera: Scelionidae)RESUMO -Usando a microscopia eletrônica de varredura, foram descritas e ilustradas a morfologia externa e a distribuição das sensilas antenais da fêmea de Gryon gallardoi (Bréthes), um importante parasitóide de ovos de coreídeos. As antenas são genículo-clavadas, dotadas de 12 antenômeros. Ao dois tamanhos -uma mais alongada e outra mais curta, estilocônicas, cavilhas, falciformes e tricóides, em associação ao comportamento de tamborilamento antenal de G. gallardoi são discutidos Assim, a descrição e a determinação do padrão de distribuição das sensilas antenais de G. gallardoi, no presente estudo, é um avanço no sentido de elucidar os mecanismos envolvidos nos comportamento de seleção de hospedeiros dessa espécie.PALAVRAS-CHAVE: Ultraestrutura, seleção de hospedeiros, parasitóide de ovos ABSTRACT -With the aid of scanning electron microscopy, the external morphology and distribution of the antennal sensilla were described for females of Gryon gallardoi (Bréthes), an egg-parasitoid of coreids. The we registered dorsal glands and seven types of sensilla: papillary, chaetica of two sizes -long and short types, styloconic grooved-peg, sickle-shaped and trichodea with numerical and spatial variation G. gallardoi antennal drumming behavior. Thus, the determination and the description pattern of antennal sensilla in G. gallardoi, in the present study, is an advance regarding the elucidation of the mechanisms involved in the host selection behavior of this species.

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“…Pore channels have a low electron density similar to that of the cuticle of the peg, very narrow dimensions, and an often convoluted structure within the cuticle. This makes them very difficult to see and they can therefore be easily overlooked (Slifer, 1970;Cribb & Jones, 1995). The 'grooved pegs' of Aedes aegypti for example were observed to possess electron dense strands running from the central lumen of the peg to the base of the grooves.…”

Section: Discussionmentioning

confidence: 99%

Olfactory responses and sensilla morphology of the blackcurrant leaf midge Dasineura tetensi

Crook

Mordue

1999

Entomologia Exp Applicata

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Olfactory responses of Dasineura tetensi (Rubs) (Diptera; Cecidomyiidae) to leaf volatiles of blackcurrant (Ribes nigrum) were tested in a 4-way olfactometer. Newly emerged virgin females showed no response to the leaf volatiles emitted from a blackcurrant shoot. Newly emerged males (which are known to respond to a pheromone released by the female) also showed no response to the leaf volatiles. Two hours after mating females responded positively, indicating that leaf volatiles may play a role in host plant finding. Scanning (SEM) and transmission (TEM) electron microscopy of the antennae of D. tetensi showed that males and females share five sensillum types; sensilla chaetica (mechanoreceptors), sensilla trichodea, sensilla basiconica, uniporous peg sensilla and circumfila (chemoreceptors). The sensilla chaetica and sensilla trichodea resemble those found on other insects. Sensilla basiconica were found on all antennal subsegments except the tip. These are multiporous receptors with five unbranched dendrites filling the lumen. Small peg sensilla located on the tips of both male and female antennae may function as contact-chemoreceptors. The circumfila, which are a unique type of sensilla found only on cecidomyiid antennae, form loops around each of the antennal subsegments, being attached to the surface by a series of stalks. TEM revealed that each stalk consisted of one sensillum containing a single highly branched dendrite. The distal regions of the walls of each sensillum are fused together to form the circumfila. Circumfila have multiporous walls and a lumen filled with multiple branches of dendrites. Their structure suggests that they are important olfactory receptors in both the male and female.

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The Structure of Arthropod Chemoreceptors

Cited by 304 publications

References 31 publications

Scanning Electron Microscopy of Antennae of <I>Aphidoletes aphidimyza</I> (Diptera: Cecidomyiidae)

Scanning Electron Microscopy of Antennae of <I>Aphidoletes aphidimyza</I> (Diptera: Cecidomyiidae)

Morphology and distribution of antennal sensilla of Gryon gallardoi (Brèthes) (Hymenoptera: Scelionidae) females

Olfactory responses and sensilla morphology of the blackcurrant leaf midge Dasineura tetensi

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