The Research Bulletin of the Meguro Parasitological Museum No. 2 (September 1968)
- CONTENTS
- On Diplozoon nipponicum Goto, 1891
Sa. Kamegai ----- pp. 1-8
In Japan, Diplozoon nipponicum are detected on the gills of Cyprinus carpio and Carassius carassius. The infected fishes are obtained mainly in lakes and limited ponds. For the purpose of obtaining the embryo, the author cultivated three eggs which were laid from the adult worm under the microscope. After eight days, the oncomiracidium was hatched from the eggshell. In the oncomiracidium, the author recognized a sticky gland, sucker, eyespots, and a pair of clamp and a pair of larval hooks. The structure of the oncomiracidium resembles that of D. paradoxum.
- What is the so-called Amphistoma (II)
T. Fukui ----- pp. 9-17
Addenda and errata.
- z}ΕθΙζι‘μz(Metagonimus yokogawai) metacercariaΜΣΚ.
The identification of the metacercaria of Metagonimus yokogawai from the fish body fixed with formalin.(in Japanese)
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Y. Komiya & S. Enomoto ----- pp. 19-22
The characteristics of the metacercaria of Metagonimus yokogawai in its fresh state are as follows: 1) yellow- brownish pigment masses are found distributed in the body, 2) the shape of the cyst is nearly rounded, measuring ca. 157.0 x 157.3 μ in diameter, 3) the thickness of cyst layer amounts to ca. 1.2 μ which is thinner than that of Clonorchis metacercaria, 4) the excretory vesicle is Y formed and contains far smaller excretory granules than those of Clonorchis metacercaria: They are distributed not so densely in the vesicle, 5) the ventral sucker is smaller than the oral one, deflecting from the center line and 6) the spines on the body surface are scale-formed. Among the characteristics above mentioned 4, 5 and 6 serve particulary as a key for identification. The fixed specimen of the metacercaria with formalin is found nearly as transparent as that in the fresh state and all the characteristics except 4 are found the same as in the fresh state. The excretory granules disappear 3 days after fixing. But the ramaining characteristics, particulary 5 and 6 offer the important key for ientification.
- Review of the Japanese species of Cystidicola, Metabronema and Rhabdochona (Nematoda) from salmonoid fishes.
L. Margolis ----- pp. 23-44
From a review of pertinent literature on the Japanese species of Cystidicola, Metabronema and Rhabdochona from salmonoid fishes, the 16 named species have been reduced to 15 and 11 of them have been distributed among three genera as follows: Rhabdochona oncorhynchi (Fujita, 1921) Fujita, 1927 (syns. Cystidicola o. F., 1921; Rhabdochona o. F., 1940), R. fujiii (Fujita, 1921) Fujita, 1927 (syns. Cystidicola f. F., 1921; Rhabdochona fujii (Fujita) of Kobayashi, 1935, 1936; Rhabdochona fujii Fujita (?1941) of Rasheed, 1965), R. salvelini Fujita, 1927, and R. amago Yamaguti, 1935; Cystidicoloides tenuissima (Zeder, 1800) Rasheed, 1966 (syns. Spiroptera salvelini Fujita, 1922; Cystidicola s. (F., 1922) Dollfus and Campana-Rouget, 1956; Sterliadochona a. (F., 1922) Roytman, in press); Salverinema salmonicola (Ishii, 1916) Margolis, 1966 (syns. Oxyuris sp. Kishida, 1905; Ancyracanthus s. I., 1916; Cystidicola s. (I., 1916) Fujita, 1927; Cystidicola chitosensis Fujita, 1940; "Cystidicola farionis" of Zhukov, 1960; Salverinema cristata Trofimenko, 1962; Pseudometabronema sachalinense Bogdanova, 1963), S. iwata (Fujita, 1928) n. comb. (syns. Cystidicola i. F., 1928; Metabronema i. F., 1928) Fujita, 1937), S. oncorhynchi (Fujita, 1939) n. comb. (syns. Metabronema o. F., 1939; Cystidicola o. (F., 1939) Yamaguti, 1961), S. kosigii (Fujita, 1939) n. comb. (syns. Metabronema k. F., 1939), S. amemasu (Fujita, 1939) n. comb. (syns. Metabronema a. F., 1939; Cystidicola o. (F., 1939) Rasheed, 1966), S. ishiii (Fujita, 1941) n. comb. (syns. Metabronema salvelini F., 1939; M. ishiii F., 1941; Rhabdochona i. (F., 1941) Yamaguti, 1961). The generic position of the remaining four species was left unsetted bacouse of insufficient available morohological informaton. These are Cystidicola brevicauda Fujita, 1939, C. chika Fujita, 1941 (syns. C. minuta Fujita, 1940; Metabronema minutum (F., 1940) Yamaguti, 1961), C. mesopi Fujita, 1940, and Metabronema laticauda Fujita, 1939. It is not likely that all species of Salvelinema and possibly Rhabdochona are valid. Examination of syntype or topotypic material would be necessary to settle questions of synonymy at the specific level.
- On the parasites of fishes and shell-fishes in Sagami Bay. (No. 4) Parasitic helminths of mackerel, Pneumotophorus japonicus (Houttuuyn).
A. Ichihara, K. Kato, Sh. Kamegai & M. Machida ----- pp.45-60
Thirty-nine of mackerels in Sagami Bay were dissected. Parasitic helminths obtained from them are as follows: Kuhnia scombri as monogenetic trematode, Opechona orientalis, O. olsoni, Lecithocladium excisum, Nematobothrium filiforme as diagenetic trematodes, Echeneibothrium bifidum, unidentified larvae as cestodes. Anisakis-larvae (Type I & II of Berland, 1961) as nematodes, Nipporhynchus seriolae, Bolbosoma sp. as acanthocephalan (Table 1). Some taxonomic discussions for O. orientalis and N. seriolae were given.
- RESEARCH NOTES
- A case of human infection with the immature worm of Diplogonoporus grandis.
Sa. Kamegai, A. Ichihara, H. Nonobe, M. Machida & T. Hara ----- p. 18
- One more case of human infection with Diplogonoporus grandis.
A. Ichihara, Sa. Kamegai, T. Suguro, & N. Suzuki ----- p. 44