Molluscan Skin (excluding Cephalopods)

Simkiss, K.

doi:10.1016/b978-0-12-751411-6.50009-6

Cited by 9 publications

(15 citation statements)

References 85 publications

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“…It has been demonstrated that the molluscan integument can act as a site for the active exchange of ions and metabolites [2]. Endocytosis processes have also been described in the foot epithelium of a terrestrial gastropod [37] and in the foot of the limpet [38].…”

Section: Discussionmentioning

confidence: 99%

Ultrastructure and Glycoconjugate Pattern of the Foot Epithelium of the AbaloneHaliotis tuberculata(Linnaeus, 1758) (Gastropoda, Haliotidae)

Bravo

Martínez-Zorzano²,

Pérez³

et al. 2012

The Scientific World Journal

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The foot epithelium of the gastropod Haliotis tuberculata is studied by light and electron microscopy in order to contribute to the understanding of the anatomy and functional morphology of the mollusks integument. Study of the external surface by scanning electron microscopy reveals that the side foot epithelium is characterized by a microvillus border with a very scant presence of small ciliary tufts, but the sole foot epithelium bears a dense field of long cilia. Ultrastructural examination by transmission electron microscopy of the side epithelial cells shows deeply pigmented cells with high electron-dense granular content which are not observed in the epithelial sole cells. Along the pedal epithelium, seven types of secretory cells are present; furthermore, two types of subepithelial glands are located just in the sole foot. The presence and composition of glycoconjugates in the secretory cells and subepithelial glands are analyzed by conventional and lectin histochemistry. Subepithelial glands contain mainly N-glycoproteins rich in fucose and mannose whereas secretory cells present mostly acidic sulphated glycoconjugates such as glycosaminoglycans and mucins, which are rich in galactose, N-acetyl-galactosamine, and N-acetyl-glucosamine. No sialic acid is present in the foot epithelium.

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Section: Discussionmentioning

confidence: 99%

Ultrastructure and Glycoconjugate Pattern of the Foot Epithelium of the AbaloneHaliotis tuberculata(Linnaeus, 1758) (Gastropoda, Haliotidae)

Bravo

Martínez-Zorzano²,

Pérez³

et al. 2012

The Scientific World Journal

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“…The convolution of pallial organs also greatly increases the effective surface of these interfaces and enhances their exposure to waterborne microbes, highlighting the need for an efficient defense system associated with the pallial mucosa. Simkiss (1988)). Not to scale.…”

Section: Molluscan Mucosal Epitheliamentioning

confidence: 99%

Mucosal immunity in mollusks

Allam

Espinosa

2015

Mucosal Health in Aquaculture

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“…The ultrastructure of integuments from species of various molluscan classes has been described (Simkiss, 1988;Voltzow, 1994;Budelman et al, 1997;Luchtel et al, 1997;Morse and Zardus, 1997). In all species examined, the epidermis is a simple epithelium resting on a basement membrane and consisting of: a) the principal epithelial cells (supporting cells according to Bubel, 1984) with microvilli or cilia; b) secretory cells, including mucous cells; and c) nerve cells and nerve endings.…”

mentioning

confidence: 99%

An ultrastructural study of cell junctions and the cytoskeleton in epithelial cells of the molluscan integument

Bairati

Gioria

2007

Journal of Morphology

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Cell junctions and the cytoskeleton of integumental epidermal cells from six bivalves, four gastropods, and two cephalopods were studied by transmission electron microscopy. In all species examined, the junctions in supporting cells presented the following similar pattern: an apical-lateral adhesion belt (occluding junctions were not observed); (b) a lateral complex of septate junctions and smooth septate junctions, with interdigitations between adjacent cells while the gap junctions were not constantly present, and a basal complex with hemidesmosomes, focal contacts, and sometimes basolateral adherent junctions. Desmosomes were never observed. Microfilamentous and microgranular material were present throughout the cells, as bundles of microfilaments within microvilli and the terminal web, within interdigitations, and as cytoplasmic plaques forming part of the adherent junctions, hemidesmosomes, and focal contacts. Bundles of intermediate filaments that originated from basal hemidesmosomes were located close to and oriented parallel with the lateral plasma membrane and terminated within the terminal web. In cells of Aplysia depilans, intermediate filaments converged apically to terminate in hemidesmosome-like structures at the bases of the microvilli. In the cephalopods, hemidesmosomes were never observed and intermediate filaments made direct contact with the basal cell membrane. Some functional interpretations and hypotheses were also discussed.

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Molluscan Skin (excluding Cephalopods)

Cited by 9 publications

References 85 publications

Ultrastructure and Glycoconjugate Pattern of the Foot Epithelium of the AbaloneHaliotis tuberculata(Linnaeus, 1758) (Gastropoda, Haliotidae)

Ultrastructure and Glycoconjugate Pattern of the Foot Epithelium of the AbaloneHaliotis tuberculata(Linnaeus, 1758) (Gastropoda, Haliotidae)

Mucosal immunity in mollusks

An ultrastructural study of cell junctions and the cytoskeleton in epithelial cells of the molluscan integument

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