1997
DOI: 10.1007/s004350050027
|View full text |Cite
|
Sign up to set email alerts
|

Ultrastructure of the cephalic sensory organs of adult Pycnophyes dentatus and of the first juvenile stage of P. kielensis (Kinorhyncha, Homalorhagida)

Abstract: The ultrastructure of the paired cephalic sensory organs of adult Pycnophyes dentatus and of the first juvenile stage of P. kielensis (Kinorhyncha, Homalorhagida) was investigated by TEM. In both species, each sensory organ is composed of one receptor cell and one enveloping cell which border a common intercellular lumen. A single receptor cilium extends from the receptor cell into this lumen. The cilium expands behind the basal body and branches into numerous processes. A pair of cephalic sensory organs with … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

2
10
0

Year Published

2003
2003
2023
2023

Publication Types

Select...
6
1

Relationship

0
7

Authors

Journals

citations
Cited by 28 publications
(12 citation statements)
references
References 7 publications
2
10
0
Order By: Relevance
“…In kinorhynchs, sensory structures are distributed throughout the body as sensory spots, and concentrated on the head with cephalic sensory organs and sensory cells at the base of the scalids [1, 55, 75]. The immunoreactive nervous system of P. kielensis comprising the circumpharyngeal brain, ventral nerve cord, ganglion in segment 6, and lateral and longitudinal nerves along the posterior segments and the pharyngeal bulb does not represent the full nervous system.…”
Section: Discussionmentioning
confidence: 99%
“…In kinorhynchs, sensory structures are distributed throughout the body as sensory spots, and concentrated on the head with cephalic sensory organs and sensory cells at the base of the scalids [1, 55, 75]. The immunoreactive nervous system of P. kielensis comprising the circumpharyngeal brain, ventral nerve cord, ganglion in segment 6, and lateral and longitudinal nerves along the posterior segments and the pharyngeal bulb does not represent the full nervous system.…”
Section: Discussionmentioning
confidence: 99%
“…In the Pycnophyidae, one pair of ventrolateral, unpigmented cephalic sensory organs exists in Kinorhynchus phyllotropis, Pycnophyes dentatus, P. greenlandicus, and P. kielensis at the basis of the ring-01 spinoscalids (Fig. 5.1.43 B-D;Neuhaus 1997). In the everted introvert, the organs appear at the anterior end of the animals with the cilia facing laterally ( Fig.…”
Section: Sensory Structuresmentioning
confidence: 99%
“…Detailed TEM investigations of introvert sensory organs are limited to the outer and inner oral styles of Echinoderes capitatus as well as to the cephalic sensory organs of Pycnophyes dentatus and P. kielensis (see Nebelsick 1993;Neuhaus 1997). Detailed TEM investigations of introvert sensory organs are limited to the outer and inner oral styles of Echinoderes capitatus as well as to the cephalic sensory organs of Pycnophyes dentatus and P. kielensis (see Nebelsick 1993;Neuhaus 1997).…”
Section: Sensory Structuresmentioning
confidence: 99%
See 1 more Smart Citation
“…Indeed, among Gastrotricha, locomotory cilia have an eight-part microvillar symmetrical arrangement, and the sensory organ of Kinorhyncha (Kristensen and Higgins 1991;Neuhaus 1997), Loricifera (Kristensen 1991), Priapulida (Storch 1991) and Nematoda (Wright 1991) are characterized by an eight to nine-part symmetry. Mechanotransduction, i.e., the cell's conversion of a mechanical stimulus into an electric signal, reveals vital features of an organism's environment.…”
Section: Figmentioning
confidence: 98%