Epidermal Cells

Welsch, Ulrich; Storch, Völker; Richards, K. Sylvia

doi:10.1007/978-3-642-51593-4_17

Cited by 31 publications

(14 citation statements)

References 69 publications

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“…This diversity is almost in the same range as has been observed in larger species (e.g., Schlawny et al, 1991;Jamieson, 1992;Purschke 1993Purschke , 1999. In spite of fine structural variations, sensory cells may be classified by the number of cilia and whether these cilia penetrate the cuticle or not, or whether they are intraepithelial (e.g., Welsch et al, 1984;Jamieson, 1992): (1) multiciliate penetrative sensory cells, (2) uniciliate penetrative sensory cells, (3) multiciliate non-penetrative sensory cells, (4) uniciliate non-penetrative sensory cells, (5) basal ciliated sensory cells. Only the first two types are externally visible (Figs 1A-F, 2A).…”

Section: Sensory Cellsmentioning

confidence: 86%

“…Polychaetes respond to a variety of sensory stimuli and consequently possess a wide range of sensory structures (Mill, 1978;Welsch et al, 1984). These form sense organs of several kinds, including (1) the appendages of the head region, namely palps, antennae, and tentacular cirri, (2) appendages of the trunk region and pygidium, the parapodial cirri and pygidial cirri, (3) the nuchal organs, (4) the dorsal organs, (5) the lateral organs, (6) the eyes, (7) the photoreceptor-like sense organs, (8) the statocysts, (9) various kinds of pharyngeal papillae and (10) the apical organs present in trochophore larvae.…”

Section: Introductionmentioning

confidence: 99%

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Sense organs in polychaetes (Annelida)

Purschke

2005

Hydrobiologia

151

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Polychaetes possess a wide range of sensory structures. These form sense organs of several kinds, including the appendages of the head region (palps, antennae, tentacular cirri), the appendages of the trunk region and pygidium (parapodial and pygidial cirri), the nuchal organs, the dorsal organs, the lateral organs, the eyes, the photoreceptor-like sense organs, the statocysts, various kinds of pharyngeal papillae as well as structurally peculiar sensory organs of still unknown function and the apical organs of trochophore larvae. Moreover, isolated or clustered sensory cells not obviously associated with other cell types are distributed all over the body. Whereas nuchal organs are typical for polychaetes and are lacking only in a few species, all other kinds of sensory organs are restricted to certain groups of taxa or species. Some have only been described in single species till now. Sensory cells are generally bipolar sensory cells and their cell bodies are either located peripherally within the epidermis or within the central nervous system. These sensory cells are usually ciliated and different types can be disinguished. Structure, function and phylogenetic importance of the sensory structures observed in polychaetes so far are reviewed. For evaluation of the relationships of the higher taxa in Annelida palps, nuchal organs and pigmented ocelli appear to be of special importance.

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Section: Sensory Cellsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Sense organs in polychaetes (Annelida)

Purschke

2005

Hydrobiologia

151

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“…Several ultrastructural descriptions of secretory cells reflect the high structural diversity of the secretions from compact material to fine filamentous or granular material packed in vesicles of various sizes or in sometimes highly ordered arrangements, which seemingly may lack a surrounding membrane (Dorsett & Hyde, 1970a, b;Kryvi, 1972;Storch & Welsch, 1972;Hausmann, 1982;Welsch et al, 1984;Hilbig, 1986b;Storch, 1988;Gardiner, 1992b). Histochemical investigations revealed that epidermal cells can secrete many different substances including glycosaminoglycans like hyaluronic acid, different mucopolysaccharids, mucoproteins, proteins, enzymes, phenols, and varying inorganic components (Dorsett & Hyde, 1970a, b;Defretin, 1971;Kryvi, 1971;Moermans, 1974;Bielakoff et al, 1975;Vovelle, 1979;Vovelle & Gaill, 1986;Vovelle et al, 1994).…”

Section: Secretory Cellsmentioning

confidence: 97%

“…The main structural characteristics are well known and were reviewed repeatedly [see Gardiner (1992b); Richards (1978); Richards (1984); Southward (1984); Southward (1993); Storch (1988); Welsch et al (1984)]. The epidermis inhabits secretory cells, sensory cells and as its main component supportive cells.…”

Section: Introductionmentioning

confidence: 98%

Comparative structure of the epidermis in polychaetes (Annelida)

Hausen

2005

Hydrobiologia

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The polychaete epidermis generally consists of a single layer of supportive cells, gland cells and sensory cells. Except for the latter, this paper reviews the recent literature on the annelid epidermis, focussing on the mentioned cell types and the cuticle. The annelid epidermis is compared to that of Sipuncula, Echiura and Myzostomida. Supportive cells predominate in the polychaete epidermis. They show a high structural diversity even within single specimens. Ciliated cells are usually multiciliary and only two cases of monociliary epidermis cells are known. Unambigous epithilio-muscle cells are only described in feeding palps of a Magelona species. Secretory cells release a large number of gland products and some of them are essential for tube secretion. Rather pecularities of the cells and its arrangement within glands than the ultrastructure of the secretions is useful for phylogenetic considerations. One of the main components of the cuticle is collagen. Recent studies indicate that annelid cuticular collagen differs in several aspects from collagen of the connective tissue and might be of interest for systematics.

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“…Das Integument der Polychaeten wurde von Storch und Welsch (1970, 1972a, Welsch et al (1984) und Storch (1988 Das Integument und das Epithel des Verdauungstraktes wurden auch histochemisch untersucht (Storch und Welsch 1972b;Welsch und Storch 1970. Die Beschaffenheit des Integuments kann die Anforderungen der Umwelt an den Organismus widerspiegeln.…”

Section: Morphologische Untersuchungenunclassified

Aspects of the diversity of Polychaeta (Annelida) with special consideration of the publications by Volker Storch, and the description of a new species of Ampharetidae

Wehe

2009

Environ Sci Eur

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Epidermal Cells

Cited by 31 publications

References 69 publications

Sense organs in polychaetes (Annelida)

Sense organs in polychaetes (Annelida)

Comparative structure of the epidermis in polychaetes (Annelida)

Aspects of the diversity of Polychaeta (Annelida) with special consideration of the publications by Volker Storch, and the description of a new species of Ampharetidae

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