The structure of the pharynx of the adult female nematode Anguillicoloides crassus (Spirurina) has been studied for the first time using light and transmission electron microscopy. The cylindrical pharynx consists of a short anterior muscular corpus and an enlarged posterior glandular and muscular postcorpus. The main cellular components of the pharynx of A. crassus include the muscle cells, the marginal cells, the nerve cells, and 1 dorsal and 2 subventral glands. New observations for nematodes include: (1) the non-contractile regions of pharyngeal musculature in the corpus have specific appearance; (2) the ventrosublateral longitudinal nerve in the pharynx has an enlarged, enucleated anterior part, with a pronounced palmate projections; and (3) abundant lysosomelike membranous bodies consisting of myelinlike figures of varied size present in marginal cells and pharyngointestinal valve. The 2 subventral glands and, apparently, the single dorsal gland, have their openings at the same level, i.e., at the border between the corpus and postcorpus. The pharyngeal–intestinal valve joins the pharynx to the intestine. Knowledge of the ultrastructure of these complex characters may be useful in understanding of functional features, and for comparative morphology as well as evolutionary considerations within the Chromadorea.
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October 2007
FUNCTIONAL MORPHOLOGY|
October 01 2007
STRUCTURE OF THE PHARYNX IN THE ADULT NEMATODE ANGUILLICOLOIDES CRASSUS (NEMATODA: RHABDITIDA) Available to Purchase
Magdaléna Bruňanská;
Magdaléna Bruňanská
Institute of Parasitology, Biology Centre Academy of Sciences of the Czech Republic, Branišovská 31, 370 05 České Budějovice, Czech Republic. [email protected]
* Parasitological Institute, Slovak Academy of Sciences, Hlinkova 3, 040 01 Košice, Slovak Republic
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Hans-Peter Fagerholm;
Hans-Peter Fagerholm
Institute of Parasitology, Biology Centre Academy of Sciences of the Czech Republic, Branišovská 31, 370 05 České Budějovice, Czech Republic. [email protected]
† Åbo Akademi University, Department of Biology, Laboratory of Aquatic Pathobiology, BioCity, Artillerigatan 6, FIN-20520 Åbo/Turku, Finland
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František Moravec
František Moravec
Institute of Parasitology, Biology Centre Academy of Sciences of the Czech Republic, Branišovská 31, 370 05 České Budějovice, Czech Republic. [email protected]
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J Parasitol (2007) 93 (5): 1017–1028.
Citation
Magdaléna Bruňanská, Hans-Peter Fagerholm, František Moravec; STRUCTURE OF THE PHARYNX IN THE ADULT NEMATODE ANGUILLICOLOIDES CRASSUS (NEMATODA: RHABDITIDA). J Parasitol 1 October 2007; 93 (5): 1017–1028. doi: https://doi.org/10.1645/GE-1127R.1
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