Multiplication of Ovaries in Ctenotaenia marmotae (Frölich, 1802) (Cestoda: Anoplocephalidae)

Authors

Sumiya Ganzorig, Hokkaido UniversityFollow
Yuzaburo Oku, Hokkaido UniversityFollow
Scott Lyell Gardner, University of Nebraska - LincolnFollow
Masao Kamiya, Rakuno Gakuen UniversityFollow

Date of this Version

1-2007

Comments

Published in Comparative Parasitology (January 2007) 74(1): 151-153. DOI: 10.1654/4231.1. Copyright 2007, the Helminthological Society of Washington. Used by permission.

Abstract

Individuals of the cestode species Ctenotaenia marmotae (Frölich, 1802) (Cestoda: Anoplocephalidae) possessing duplicated rudimentary ovaries toward the medial parts of the segments were found in material collected from the Siberian marmot (Marmota sibirica) in Mongolia. This tapeworm is characterized by possessing one pair of female genitals per segment. The extra rudimentary ovaries that we found ranged from one to six in number per segment and were much smaller than the main pairs of ovaries. Although multiplication of ovaries was reported to occur in a species of Diandrya (Darrah, 1930) by Rausch (1980), this is the first report of multiplication of ovaries in this species of cestode.