Structural, histochemical and functional aspects of the epidermis of fishes

Zaccone, Giacomo; Kapoor, Bimla; Fasulo, Salvatore; Ainis, L.

doi:10.1016/s0065-2881(01)40004-6

Cited by 77 publications

(87 citation statements)

References 205 publications

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“…Hora (1934) and Mittal et al (1980) have shown that the mucus has a remarkable power for precipitating mud held in suspension in water, and that the mucus secreted by the skin in air breathing fishes may also be used to keep the skin clear for respiration. As in Table 3, the club cell was proteinaceous in nature as reported in other fishes (Whitear 1986, Agrawal and Mittal 1992, Zaccone et al 2001. As listed by Agrawal and Mittal (1992), their functions are mainly protective and have been assockted with the secretion of pheromones.…”

Section: Discussionmentioning

confidence: 58%

Morphology and histochemistry of the skin of the mud loach,misgurnus mizolepis, in relation to cutaeneous respiration

Park¹,

Kim

2001

Korean Journal of Biological Sciences

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Section: Discussionmentioning

confidence: 58%

Morphology and histochemistry of the skin of the mud loach,misgurnus mizolepis, in relation to cutaeneous respiration

Park¹,

Kim

2001

Korean Journal of Biological Sciences

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“…By immunohistochemistry, previous workers have demonstrated cytokeratins in teleost epidermis (Bunton 1993;Ainis et al 1995;Alibardi 2001;Martorana et al 2001;Alibardi & Joss 2003; see also Zaccone et al 2001). Cytokeratins with subtypes 7, 8, 18 and 19 are present in the skin and horny teeth of the adult sea lamprey, Petromyzon marinus (Zaccone et al 1995).…”

Section: Discussionmentioning

confidence: 97%

“…Teleosts of select genera and families are known to show remarkable keratinisation of the outer epidermal layer and its modified structures (Whitear 1986;Zaccone et al 2001). In many of them, epidermal cells undergoing keratinisation are apparently rich in tonofilaments.…”

Section: Introductionmentioning

confidence: 99%

Morphology of adhesive organ of the snow troutSchizothorax richardsonii(Gray, 1832)

Das¹,

Nag²

2008

Italian Journal of Zoology

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This paper describes the morphology and fine structure of adhesive organ (AO) of the snow trout Schizothorax richardsonii (Gray, 1832). The species lives in the sub-Himalayan streams and rivers, where they adhere to submerged rocks and stones with its AO located beneath the mouth opening. The AO consists of a crescent callus part and a modified labial fold, bearing numerous tubercles. In both parts, the epidermis is exceptionally thick (150-170 mm) and contains keratinocytes rich in bundles of tonofilaments; elsewhere, the epidermis contains single, disperse filaments, mucous cells and other usual cells seen in teleosts. Unlike epidermis elsewhere, the outer 4-5 row cells of the AO epidermis undergo keratinisation and are cytokeratin positive. The individual keratinised cell layers, which are degenerated electron-dense sheets, lack nuclei and cytoplasmic organelles, but possess filaments embedded in a dense cytoplasmic matrix and few, large mucous-like granules. Beneath the keratinised layers, keratinocytes are compactly aligned into 20-25 rows. They possess abundant thick bundles of clumped tonofilaments over the entire cytoplasm and peripherally, small mucous granules. Towards the basal epidermis, the cells are elongated and show major cytoplasmic organelles, few tonofilament bundles, but no mucous granules. It is evident that the keratinocytes of the mid-epidermis are differentiated for the production of tonofilaments. The outer keratinised part of the AO epidermis provides structural support and protection (from damage) during adhesion. It appears that the callus part acts by creating vacuum first, while the tuberculated part of the AO epidermis assists in adhesion to the rocky substratum.

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“…Amongst these types, mucous cells marked by PAS technique are commonly found on the skin of other species of fish (Fujimoto et al, 2008;Nolan et al, 2002;Souza and Santos, 1997;Zaccone et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Unicellular glands are also found on the epidermis of fish, the club cells, considered epidermal secretory cells characteristic of several orders of Pisces and probably multi-purposed (Zaccone et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Scale morphology of Prochilodus lineatus with emphasis on the scale epithelium

Alves

Pereira

Pitol³

et al. 2013

Braz. J. Biol.

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The fish body is entirely covered by a thin, smooth and glandular epidermis, closely attached to the scales inserted on the dermis. The descriptive work on this tissue dates to twenty or thirty years ago, bears very little photographic record and does not focus on the scale epithelium, despite the fact that it is in direct contact with the environment. Thereupon, the present study characterizes the scale epithelium of Prochilodus lineatus, a robust species of fish. The observations show that the scale is completely covered by epithelium thicker on the proximal end of the scale, multilayered on the dorsal surface and undifferentiated on the ventral surface, and covered by mucous producing cells, mostly acid mucous. The scale is formed by plywood-like collagen matrix of collagen type III and supported by a network of elastic fibers on the ventral face. Differentiated cellular types are present, such as club cells, considered to be responsible for the release of alarm substances, which suggests possible use in environmental assessment as a non-invasive technique.

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Structural, histochemical and functional aspects of the epidermis of fishes

Cited by 77 publications

References 205 publications

Morphology and histochemistry of the skin of the mud loach,misgurnus mizolepis, in relation to cutaeneous respiration

Morphology and histochemistry of the skin of the mud loach,misgurnus mizolepis, in relation to cutaeneous respiration

Morphology of adhesive organ of the snow troutSchizothorax richardsonii(Gray, 1832)

Scale morphology of Prochilodus lineatus with emphasis on the scale epithelium

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