Comparative studies on intestine ultrastructure of third-stage larvae and adults of Cystidicoloides ephemeridarum (Nematoda, Cystidicolidae)
Language English Country Germany Media print-electronic
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Spirurida Infections parasitology veterinary MeSH
- Larva ultrastructure MeSH
- Fish Diseases parasitology MeSH
- Trout parasitology MeSH
- Spirurida growth & development ultrastructure MeSH
- Intestines ultrastructure MeSH
- Fireflies parasitology MeSH
- Microscopy, Electron, Transmission MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
The intestinal epithelium of third-stage larvae and adults of Cystidicoloides ephemeridarum from haemocoel of mayflies and stomach of brown trout was studied by electron microscopy and cytochemistry. In section, the intestine of both stages is composed of a single layer of about ten undifferentiated intestinal cells in a ring. A labyrinth of deep invaginations is present in the basal region of each cell. The apical surface is modified into well developed, regularly arranged microvilli. These, together with numerous organelles engaged in metabolism and a well defined gut lumen filled with unidentifiable material suggest that the intestine may function in digestion and absorption during both stages. The adults seem to feed upon the semifluid content of the stomach of brown trout. Fortuitous oral infection with undetermined bacteria in vitro led to degenerative changes in the intestinal tissue and probably caused death of the infected specimens. Up to 75% of the cell volume in the L(3) is occupied by glycogen deposits. In the adults, a minor portion of glycogen, together with lipid droplets, has been observed. The adults are considered to rely more on aerobic metabolism, whereas anaerobic metabolism (glycolysis) may prevail in L(3).
See more in PubMed
Int J Parasitol. 1973 Mar;3(2):157-64 PubMed
Parasitology. 1971 Apr;62(2):259-72 PubMed
Parasitol Res. 2003 Sep;91(2):100-8 PubMed
J Parasitol. 1975 Jun;61(3):499-512 PubMed
Z Parasitenkd. 1984;70(4):525-36 PubMed
Curr Biol. 2000 Dec 14-28;10(24):1615-8 PubMed
Parasitology. 1983 Dec;87 (Pt 3):493-505 PubMed
Can J Zool. 1973 Apr;51(4):437-41 PubMed
Parasitology. 1979 Jun;78(3):343-54 PubMed
J Helminthol. 1996 Sep;70(3):223-9 PubMed
Exp Parasitol. 1995 Aug;81(1):72-8 PubMed
Parasitology. 1983 Aug;87 (Pt 1):129-37 PubMed
Am J Vet Res. 1984 Jun;45(6):1184-92 PubMed
Tropenmed Parasitol. 1983 Sep;34(3):155-61 PubMed
Parasitol Res. 2004 Sep;94(2):106-11 PubMed
Int J Parasitol. 1974 Oct;4(5):523-36 PubMed
Z Parasitenkd. 1986;72(4):537-47 PubMed
J Parasitol. 1969 Oct;55(5):1035-45 PubMed
