"Hymenolepia horrida (Linstow, 1901) from Microtinae in Hungary"

Transcription

1 Parasit. Hung Hymenolepis horrida (Linstow, 1901) from Microtinae in Hungary Dr. Éva MURAI Dr. Frantisek TENORA Zoological Department of the Hungarian Natural History Museum, Budapest Zoological Department of the University of Agriculture, Brno "Hymenolepia horrida (Linstow, 1901) from Microtinae in Hungary" - Murai, É., Tenora, P. - Parasit. Hung First record of the tapeworm H. horrida (Linstow, 1901) in Hungary from Microtinae. Pitymys subterraneus was found to be a new host for H.horrida. The description of the authors' material, with the data on invasion extensity and intensity, as well as the systematic and taxonomic status of the species, are given. Introduction The tapeworm species Hymenolepis horrida has not been recorded from rodents of the subfamily Microtinae in Hungary sofar. This paper reviews our previous contributions on the tapeworms of the genus Hymenolepis (Weinland, 1858) (see TENORA and MURAI 1972),and i t gives the description of our material of H. horrida from the new host Pitymys subterraneus. Material The tapeworm collection deposited in the Zoological Department of the Hungarian Natural History Museum, Budapest, preserves the H. horrida material from three host species of the subfamily Microtinae. This tapeworm was found in six localities in Clethrionomys glareolus (296 host specimens were examined), in two localities in Pitymys subterraneus (64 host specimens examined), in two localities in Microtus arvalis (197 host specimens examined). More details on our material are given below. I l l

2 Systematic and Taxonomy Hymenolepis horrida (Linstow, 1901) Hosts and localities: Clethrionomya glareolua (County Veszprém: Bakony Hilla-Iharkút, Szentgál, Balatoncaicaó; County Vaa: Őriszentpéter; County Sopron: Brennbergbánya; County Fejér: Agárd- Lake Velence); Pitymys subterraneus (County Vas: Őriszentpéter; County Pest: Pilisborosjenő); Microtus arvalis (Őriszentpéter, Pilisborosjenő). Extensity and intensity of invasion: C. glareolus 11.8 %, 1-6 specimens, P. subterraneus 12.5$- 6 specimens, M. arvalis 1 %, 1-3 specimens. Description: (based on individuals from P. subterraneus). The tapeworms are mm long, mm broad. The scolex bears neither spines nor hooks, and i t measures x xx in diameter. I t is provided with 4 conspicuous suckers of x u in diameter. The rostellar sac is not present. Fully developed hermaphrodite segments are 900 p. wide and 110 xx high. Each segment bears three teatea meaauring 160 x 68 u. Two are aituated aporal above each other, the third poral. The lo- bate ovary (420 x 78 /a) lie a between the poral and aporal testes. The yolk gland (177 x 40 xx) is situated below i t. The bursa cirri of hermaphrodite segments measures 170 x 30 ;u, and i t is provided with a cirrus bearing fine spines (Fig. lc). The lateral excretion outlets measure 93 p- in diameter. The eggs are oval-elongated with a very fine cover. The oncosphere of limetta-shape is provided with 6 hooklets. Eggs x ;u, oncosphere x 13 M$ oncosphere hooklets 8-9 xx. The dimensions of H. horrida individuals found in CI. glareolus and M. arvalis are within those from P. subterraneus individuals. Discussion The species H. horrida was described by LINSTOW (1901) from 112

3 Rattus norvegicus, then redescribed by SKRJABIN and MATEVOSIAN (1948) from the same host. SPASSKY (1954a) accepted BAER * s (1932) views, who considered the species H. procera Janicki, 1904 and H. arvicolina Cholodkowski, 1912, described from Arvicola terrestris, as junior synonyms of H. horrida. Moreover, he also included H. sciurina Cholodkowski, 1912, sensu SKRJABIN et MATEVOSIAN, 1948, as a synonym of H. horrida. and in the same year (1954b) in another paper he also synonymized Oligorchis nonarmatus Neiland, 1952, with H. horrida (cf. TENORA, 1967). Pig. 1 : Hymenolepis horrida (Linstow, 1901) A= Scolex; B= Egg with oncosphere; C= Cirrus with spines; D= Hermaphrodite segment (A-D orig.) As far as the hosts are concerned, SPASSKY (1954a) states that H. horrida,,is-, f i r s t of a l l, a parasite in rodents of the subfamily Microtinae, despite being recorded more often from members of the family Muridae (e.g., DUBININ 1953, SHALDYBYN 1954,

4 ZARNOWSKI 1955, ERHARDOVÁ, 1958, etc.). Prom the recent literature also stating that the rodents of the subfamily Microtinae are hosts of H. horrida. we cite e.g., MERKUSHEVA 1963, MOSGO- VOJ 1966, TENORA 1967, KISIELEWSKA 1970, PROKOPIC 1972, etc. In accordance with the latter, H. horrida has occurred in Hungary in rodents of the subfamily Microtinae, although 629 individuals from seven species of the subfamily Murinae from this country were examined with a negative result (TENORA and MURAI 1972). Summary The study has brought new data on the tapeworm Hymenolepis horrida. I t was found in Hungary for the first time, in rodents of the subfamily Microtinae. One of the hosts - P. subterraneus - is a new host for this tapeworm. I t is pointed out in the discussion that, as far as the European part of Palaearctic Region is concerned, H. horrida predominates in rodents of the subfamily Microtinae and not in those in the subfamily Murinae, from which H. horrida was originally described (as a parasite in Rattus norvegicus). MURAI, É. TENORA. F.: Hymenolepis horrida (Linstow, 1901) magyarországi pockokból A szerzők elsőnek közlik Magyarország területéről a H. horrida fajt Clethrionomys glareolus, Pitymys subterraneus és Microtus arvalis gazdákból. A faj anatómiáját P. subterraneus-bó1 származó példány alapján írják le és ábrázolják. A P. subterraneus a H. horrida új gazdaállata. Magyarországon eddig csak Microtinae fajokban észlelték. Az európai irodalmi adatok is arra engednek következtetni, hogy e faj elsősorban a pocokfélék parazitája, annak ellenére, hogy eredeti leírója (LINSTOW, 1901) vándorpatkányból közölte. A dolgozat tartalmazza a fajjal kapcsolatos szisztematikai vita adatait és a legújabb álláspontot.

5 References BAER, J.G.: Contribution a la faune helminthologique de Suisse. - Revue Suisse Zool DUBININ, V. B.: Parasitofauna myshevydnykh grysunov i je jo ismenenija v delte Volgy. - Parasit, sbor. zool. inst. AN SSSR 15_ ERHARDOVÁ, B.: Parasiticti cervi hlodavcu Ceskoslovenska. - Ceskoslov. parasit KISIELEWSKA, K.: Ecological organization of intestinal helminth groupings in Clethrionomys glareolus (Schreb.) (Rodentia). I I I. Structure of helminth groupings in C. glareolus populations of various forest biocoenoses in Poland. - Acta Parasit. Polon MERKUSHEVA, I. V.: Gelminty grysunov. - Fauna i ekologija parasit ov grysunov, Minsk «M0SG0V0J, A. A. - SEMENOVA, M. K. - MISHCHENKO, R. I. - CYBALO- VA, S. V.: K gelmintofaune grysunov i sajcev Karelii - Trudy gelmint. labor. AN SSSR PROKOPIC, J.: Biocenotical study on cestodes of small mammals in various biotopes. - Acta Sc. Nat. Brno, SKRJABIN, K. I. - MATEVOSIAN, E. M.: Gymenolepididy mlekopitajushchich. - Trudy gel.labor. AN SSSR SPASSKY, A.A.: Klassifikacija gimenolepidid mlekopitajushchich. - Trudy gel. labor. AN SSSR a. SPASSKY, A. A.: K voprosu o samostoiatelnosti vida Oligorchis nonarmatus Neiland, 1952 (Cestoda Hymenolepididae). - Trudy gel. labor. AN SSSR b. SHALDYBYN, L. S.: Gelmintofauna mlekopitajushchich Mordovskogo gosudarstvennogo zapovednika. - Uchen. zapiski Gor kovsk. gos. ped. inst I964. TENORA, F.: The helminthofauna of small rodents of the Rohácská Dolina Valley (Liptovské Hole Mts., Slovakia). - Acta Sc. Nat. Brno

6 TENORA, P. - MURAI, É.: Recent data on five species of the genus Hymenolepis (Weinland, 1858) (Cestoidea, Hymenolepididae) parasitizing rodents in Hungary. - Acta Zool. Acad. Sei. Hung ZARNOWSKI, E.: Parasitic worms of forest micromammalians (Rodent ia and Insectivora) of the environment of Pulawy (District Lublin). I. Cestoda. - Acta Parasit. Polon Received: Dr. MURAI, É. Zoological Department of the Hungarian Natural History Museum 1088 Budapest, Baross u. 13- Zoological Dr. TENORA, P. Department of the University of Agriculture Brno, Zemedelská 1. Czechoslovakia 116