Dr. Éva Murai szerk.: Miscellanea Zoologica Hungarica 1. 1982 (Budapest, 1982)
Murai, É.: Taeniid species in Hungary (Cestoda: Taeniidae). II. Larval stages of taeniids parasitizing rodents and lagomorphs
Two comprehensive studies dealing with the systematics and taxonomy of the cestode family Taeniidae have been published recently (see ABU LAD ZE, 1964, VERSTER, 1969). The authors differ in their opinion on taxa of generic rank. I have followed in this paper ABULADZE's systematical and taxonomical differentiation. RESULTS Larval stages of seven Taeniidae species were found in rodents: Taenia crassiceps (Zeder, 1800), T. martis (Zeder, 1803), T. tenuicollis (Rudolphi, 1819), Hydatigera taeniaeformis (Batsch, 1786), Tetratirotaenla polyacantha (Leuckart, 1856), Cladotaenia circ i Yamaguti, 1935, C. globi- fera (Batsch, 1786). Lagomorphs are intermediate hosts for two taeniids: Taenia pisiformis (Bloch, 1786) and Multiceps serlalis (Gervais, 1874). I present in the following section the faunistical data, the short characterization of larval forms and notes on systematical status and the nomenclature of these species. Hungarian data for the adult stage of Taeniidae will be published in a separate communication. The material of our examination was collected in different parts of Hungary. Table 2 contains the number of rodent, and Table 3 that of the lagomorph intermediate hosts examined in various counties of Hungary, and includes the extensity of larval taeniids in these mammals. 1. Taenia crassiceps (Zeder, 1800) Rudolphi, 1810 Name of larva: Cysticercus longicollis Rudolphi, 1819. Intermediate hosts: Ondatra zibethicus and Microtus arvalis . - Localization: abdominal and thoracic cavities, subcutaneous lacunae. - Extensity: 0.33% in O. zibethicus and 0.5% in M. ar valis. - Intensity: 3 to 4300 cysticerci. Collection data of the infested intermediate hosts: Ondatra zibethicus - County Veszprém: Ábrahámhegy 24/04/75 = 1 case. Microtus arvalis - County Bács-Kiskun: Kunadacs 12/04/80 (1) ++ ; County Szabolcs-Szatmár: Tiszabercel 12/06/72 (1); County Vas: Bozsok 04/03/75 (1), 15/04/75 (2), Bük 20/11/66 (1), 26/07/72 (1), 24/08/73 (1), 22/02/74 (1), 15/08/74 (1), Tanakajd 03/10/74 (2), Tömörd 30/08/68 (1) = 13 cases. Characterization of larval T. crasslcepB In the specimens infested with C. longicollis, cysticerci were found in intraperitoneal, extraperitoneal and subcutaneous positions. The mass of cysticerci of various developmental stages were enclosed by a thin membrane of connective tissue, or they migrated freely between the organs of the abdominal cavity or in the thoracic cavity (Fig. 1). The maximum number of cysticerci counted in M. arvalis was 1800, the same in O. zibethicus was 4300. The majority of oval or globular cysticerci vary in size from 2 to 4 mm and contain invaginated scoleces. In many of the cysticerci, exogenous larval multiplication by budding may be observed at the abscolex pole. In young cysticerci (1.5 mm in diameter) rostella are composed of undeveloped hooks. Some larvae 2x3 mm in size have everted scolex like that of the adult helminths (full Cysticercus) and have a small bladder opposite to the scolex. Older cysticerci are characterized by large number of calcareous bodies. The diameter of larval scolex vary from 0.65 to 0.75 mm, that of the rostellum from 0.38 to 0.42, those of the four suckers from 0.24 to 0.26 mm. Rostellar hooks in two rows, 28-35 in number; the larger vary in length from 0.180 to 0.196 mm, the smaller from 0.135 to 0.156 mm. Figures 8 and 10 illustrate the shape of the fully developed hooks and Figure 9 that of the young rostellar hooks. Infestation by larval T. crassiceps in the examined small mammal material was with low extensity. This is surprising, since studies on the definitive host, the red fox have shown that about 2 5% are infested with T. crassiceps (unpublished data) . TENORA (1976b) reported C . crassiceps in Pitymys subterraneus from the Bakony mountains (County Veszprém: Szentgál), but unfortunately the specimens are no longer available. Number of the infested intermediate host specimens.
