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Raillietnema kritscheri sp. n. (Nematoda: Cosmocercidae) from Cichlasoma spp. (Pisces) from Mexico

F. Moravec, G. Salgado Maldonado and R. Pineda López
Annalen des Naturhistorischen Museums in Wien. Serie B für Botanik und Zoologie
94./95. Bd. (1990/1991), pp. 35-40
Published by: Naturhistorisches Museum
Stable URL: http://www.jstor.org/stable/41766885
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Raillietnema kritscheri sp. n. (Nematoda: Cosmocercidae) from Cichlasoma spp. (Pisces) from Mexico
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Abstract

Raillietnema kritscheri sp. n., ein neuer Nematode aus dem Intestinum von zwei Fischarten aus der Familie der Cichliden, Cichlasoma pearsei (Typuswirt) und Cichlasoma synspilum, aus Mexiko, wird beschrieben. Die Art ist hauptsächlich durch das Fehlen der Lateralflügel, die Struktur und Länge (0,081-0,120 mm) der Spiculae, das Längenverhältnis zwischen Gubernaculum und Spiculae (1:9-10), durch die Zahl und Verteilung der Caudalpapillen und durch die Abwesenheit der Caudalflügel gekennzeichnet. Raillietnema kritscheri ist die zweite aus Fischen bekannte Art der Gattung. A new nematode, Raillietnema kritscheri sp. n., is described from the intestine of two fish species of the family Cichlidae, Cichlasoma pearsei (type host) and Cichlasoma synspilum, from Mexico. It is characterized mainly by the absence of lateral alae, by the structure and length (0.081-0.120 mm) of spicules, length ratio of gubernaculum and spicules (1:9-10), and by the number and distribution of caudal papillae and the absence of caudal alae in the male. R. kritscheri is the second Raillietnema species known to parasitize fish hosts.

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