Sensory Cells in <i>Aplysia</i>

Emery, Dennis G.; Audesirk, Teresa

doi:10.1002/neu.480090207

Cited by 56 publications

(50 citation statements)

References 13 publications

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“…Using electrophysiological recordings and neuroanatomical backWll techniques, investigated mechano-and chemoreception in Pleurobranchaea californica. In Aplysia, the rhinophore epithelium was suggested to be chemoreceptive (Audesirk 1975;Emery and Audesirk 1978), and the function of the rhinophore as an olfactory organ was described by Audesirk and Audesirk (1977). Ablation of the rhinophores of Aplysia was shown to cause a decrease in the time spent for mating and the egg laying behaviour, suggesting the sensitivity of the rhinophores for pheromones (Levy et al 1997;Susswein and Nagle 2004;Cummins et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Functional neuroanatomy of the rhinophore of Archidoris pseudoargus

et al. 2007

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For sea slugs, chemosensory information represents an important sensory modality, because optical and acoustical information are limited. In the present study, we focussed on the neuroanatomy of the rhinophores and processing of olfactory stimuli in the rhinophore ganglion of Archidoris pseudoargus, belonging to the order of Nudibranchia in the subclass of Opisthobranchia. Histological techniques, Xuorescent markers, and immunohistochemistry were used to analyse neuroanatomical features of the rhinophore. A large ganglion and a prominent central lymphatic channel are surrounded by longitudinal muscles. Many serotonin-immunoreactive (IR) processes were found around the centre and between the ganglion and the highly folded lobes of the rhinophore, but serotonin-IR cell bodies were absent inside the rhinophore. In contrast to the conditions recently found in Aplysia punctata, we found no evidence for the presence of olfactory glomeruli within the rhinophore. Using calcium-imaging techniques with Fura II as a calcium indicator, we found diVerential calcium responses in various regions within the ganglion to stimulation of the rhinophore with diVerent amino acids. The lack of glomeruli in the rhinophores induces functional questions about processing of chemical information in the rhinophore.

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Section: Introductionmentioning

confidence: 99%

Functional neuroanatomy of the rhinophore of Archidoris pseudoargus

et al. 2007

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“…Some ciliated sensory cells can be stiff and bristle-like as demonstrated for several molluscan species by Edmunds (1966), Crisp (1971), Conklin & Mariscal (1977), Emery & Audesirk (1978), Phillips (1977) and Owen & McCrae (1979).…”

Section: Discussionmentioning

confidence: 91%

“…Sensory ciliated cells may be motile but the cilia often vary from ordinary kinocilia in their interior structure or in respect to their number, location and arrangement at the cell surface as found in different molluscs by Crisp (1971), Zylstra (1972), Wright (1974a, b), Bonar (1978), Emery & Audesirk (1978) and Jones & Saleuddin (1978). Some ciliated sensory cells can be stiff and bristle-like as demonstrated for several molluscan species by Edmunds (1966), Crisp (1971), Conklin & Mariscal (1977), Emery & Audesirk (1978), Phillips (1977) and Owen & McCrae (1979).…”

Section: Discussionmentioning

confidence: 99%

A scanning electron microscope study of notum structures in some dorid nudibranchs (Gastropoda: Opisthobranchia)

Kress

1981

J. Mar. Biol. Ass.

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Skin structures of nine different species of dorid nudibranchs were examined at the scanning electron microscope and the light microscope levels. From these observations the animals are grouped into three categories.1. Dorids with spicule-supported tubercles carrying a sensory knob (Rostanga rubra, Jorunna tomentosa, Onchidoris sparsa, Onchidoris pusilla).2. Dorids with small sensory papillae set in pits and distributed randomly between projecting spicules (Aegires punctilucens).3. Dorids with tubercles differing in shape from one species to another, invested with numerous spicules but without conspicuous sensory structures. The tips of the tubercles do, however, contain single sensory epithelium cells (Archidoris pseudoargus, Acanthodoris pilosa, Onchidoris muricata, Onchidoris bilamellata).

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“…The tentacular ganglion is beneath the sensory epithelium, and it ramifies into digit-like extensions over the sensory epithelium. Studies using silver-stained sections of the tentacles or rhinophores of gastropods (Lane, 1962;Emery and Audesirk, 1978) revealed that bipolar sensory neurons are distributed beneath the sensory epithelium. The majority of these bipolar neurons form synaptic connections (i.e.…”

Section: Roles Of Bilateral Tentaclesmentioning

confidence: 99%

Two pairs of tentacles and a pair of procerebra: optimized functions and redundant structures in the sensory and central organs involved in olfactory learning of terrestrial pulmonates

Matsuo

Kobayashi

Yamagishi

et al. 2011

Journal of Experimental Biology

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SummaryTerrestrial pulmonates can learn olfactory-aversion tasks and retain them in their long-term memory. To elucidate the cellular mechanisms underlying learning and memory, researchers have focused on both the peripheral and central components of olfaction: two pairs of tentacles (the superior and inferior tentacles) and a pair of procerebra, respectively. Data from tentacleamputation experiments showed that either pair of tentacles is sufficient for olfactory learning. Results of procerebrum lesion experiments showed that the procerebra are necessary for olfactory learning but that either one of the two procerebra, rather than both, is used for each olfactory learning event. Together, these data suggest that there is a redundancy in the structures of terrestrial pulmonates necessary for olfactory learning. In our commentary we exemplify and discuss functional optimization and structural redundancy in the sensory and central organs involved in olfactory learning and memory in terrestrial pulmonates.

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Sensory Cells in Aplysia

Cited by 56 publications

References 13 publications

Functional neuroanatomy of the rhinophore of Archidoris pseudoargus

Functional neuroanatomy of the rhinophore of Archidoris pseudoargus

A scanning electron microscope study of notum structures in some dorid nudibranchs (Gastropoda: Opisthobranchia)

Two pairs of tentacles and a pair of procerebra: optimized functions and redundant structures in the sensory and central organs involved in olfactory learning of terrestrial pulmonates

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