国立科博専報，（47）： 51–63，2011年4月15日 Mem. Natl. Mus. Nat. Sci., Tokyo, (47): 51–63, April 15, 2011

Digenean Trematodes of Fishes Caught in Sagami Bay, off Izu Islands and off Ogasawara Islands

Toshiaki Kuramochi

Department of Zoology, National Museum of Nature and Science, 3–23–1 Hyakunin-cho, Shinjuku-ku, Tokyo 169–0073, Japan

Abstract. A total of 30 species of degenean trematodes of 23 genera from 10 families were obtained from 19 species of fishes caught in Sagami Bay, off Izu Island and off Ogasawara Is- lands. The species from Sagami Bay and off Izu Islands contained only four previously recorded species from the same areas and most of them are distributed widely including off northern Ja- pan. In contrast, the species off Ogasawara Islands were consisted of tropical–subtropical species but some shared common species with those off southern and central Japan rather than those off Ryūkyū Islands. These results preliminarily suggest that advances of arctic–subarctic digenean species are attenuated in the waters around Izu Islands and fauna off Ogasawara Islands is com- posed both of temperate water and tropical–subtropical species. Key words: Digenea, fish parasite, Sagami Bay, Izu Islands, Ogasawara Islands

carried out several parasitological surveys on Introduction fishes in Sagami Bay, off Izu Islands and off Oga- A research project entitled “Study on Environ- sawara Islands. A total of 156 individuals of 55 mental Changes in the Sagami Sea and Adjacent species from 28 families of fishes were examined, Coastal Area with Time Serial Comparison of of which 38 species of fishes were infested by 98 Fauna and Flora” was carried out by the National lots of digenean trematodes. In the present study, Museum of Nature and Science, Tokyo in 2001– 57 lots of specimens from 19 fish species were 2005 to investigate bio-diversity of Sagami Bay examined, identified and listed. Nothing has been and adjoining seas in early 21st century. For fish known on digenean trematodes of fishes in Izu– parasites, Kuramochi (2006) and Machida et al. Ogasawara arc, thus present paper is the first re- (2006) reported a total of 37 species of digenean port on the matter. trematodes, including one new species, from 57 fish species. When I summarized previous records Materials and Methods from the same areas, 91 digeneans species of 56 genera from 17 families have been recognized Fishes from varying depth between 33 and from 54 fish species to date (Goto and Ozaki, 1061 m ware collected by scientific research ves- 1929; Ichihara et al., 1963a, b, c, d, 1964a, b, sels (R/Vs). R/V Tansei Maru (Japan Agency for 1965a, b, 1966, 1968; Kamegai et al., 1961; Kato Marine-Earth Science and Technology) conducted et al., 1963a, b, c; Kuramochi, 2006; Machida et a research cruise KT-07-31 on 24–30 Nov. 2007 al., 2006; Shimazu, 1989; Shimazu and Nagasa- and operated beam trawl in Sagami Bay and off wa, 1985a, b; Shimazu and Kamegai, 1990). Izu Islands. R/V Takunan (Hachijō Branch, To- The research project was followed by new kyo Metropolitan Center for Agriculture, Forestry project “Studies on the Origin of Biodiversity in and Fisheries on Izu Islands) carried out research the Sagami Sea, Fossa Magna Element and the cruises for Beryx splendens Lowe, 1834 (Beryci- Izu–Ogasawara (Bonin) Arc” since 2006, and I dae) [Japanese name: Kinme-dai] by fishing off 52 Toshiaki Kuramochi

Table 1. Catch localities and positons of digenean positive fishes examined in the present study.

Position in Position out Depth Locality Station Vessel Date Latitude Longitude Latitude Longitude (m) Off Hatsushima Island, Sagami Bay L-1-700 Tansei Maru 2007/11/25 35°03.811′N 139°12.224′E 35°04.818′N 139°12.593′E 699–754 L-1-800 Tansei Maru 2007/11/25 35°03.412′N 139°12.552′E 35°02.726′N 139°13.733′E 563–756 Off Jōgashima Island, Sagami Bay L-2-800 Tansei Maru 2007/11/25 35°03.204′N 139°33.014′E 35°02.830′N 139°31.975′E 969–1061 L-2’-1000 Tansei Maru 2007/11/28 35°02.781′N 139°33.269′E 35°03.038′N 139°33.737′E 681–716 Off Toshima Island, Izu Islands L-3-500 Tansei Maru 2007/11/27 34°39.889′N 139°12.191′E 34°40.030′N 139°13.866′E 644–828 Off Hachijōjima Island, Izu Islands Kenken Yama Takunan 2007/7/23 33°06.9′N 139°32.5′E 497 Takunan 2 Takunan 2008/7/14 33°11.353′N 140°02.299′E 460 Takunan 3–6 Takunan 2008/7/14 33°11.339′N 140°02.358′E 33°11.072′N 140°02.420′E 460 Takunan 7 Takunan 2008/7/15 33°24.717′N 139°40.915′E 500 Near the coasts of Chichijima Island, Ogasawara Islands Wentle 3–5 Wentle 2009/5/17 27°10.629′N 142°10.999′E 27°11.034′N 142°11.081′E 33 Wentle 5–9 Wentle 2009/5/17 27°11.034′N 142°11.081′E 27°07.346′N 142°10.868′E 33–40 Off Chichijima Island, Ogasawara Islands Koyo 12–13 Koyo 2009/5/19 27°14.615′N 142°11.454′E 27°14.639′N 142°11.440′E 100 Koyo 18–19 Koyo 2009/5/21 27°18.890′N 142°17.938′E 27°18.919′N 142°17.977′E 300 Koyo 22 Koyo 2009/5/24 26°58.126′N 142°01.233′E 374 Koyo 27–30 Koyo 2009/5/24 27°01.815′N 142°13.936′E 27°01.772′N 142°13.888′E 100 Off Hahajima Island, Ogasawara Islands Koyo 36 Koyo 2009/10/16 26°35.056′N 142°15.026′E 110 Koyo 39–41 Koyo 2009/10/16 26°35.172′N 142°15.010′E 26°05.204′N 142°14.971′E 110–120 Off Nishinoshima Island, Ogasawara Islands Koyo 54–63 Koyo 2009/10/20 27°13.965′N 140°53.295′E 27°13.938′N 140°53.348′E 130–138 Koyo 56 Koyo 2009/10/20 27°13.934′N 140°53.281′E 120 Koyo 64 Koyo 2009/10/21 27°14.847′N 140°51.801′E 95 Koyo 67 Koyo 2009/10/21 27°16.012′N 140°52.481′E 200

Hachijōjima Island and kindly provided me of morial Institute, Tsukuba Research Center, Na- materials. R/V Koyo and Wentle (Tokyo Metro- tional Museum of Nature and Science (NSMT-Pl politan Ogasawara Fisheries Center) also kindly S). fished materials off Chihijima Island, Hahajima Island and Nishnoshima Island, Ogasawara Is- Results lands. Fishes ware preserved on ice until use, and identified to species, dissected and examined for A total of 30 species of digenean trematodes of parasite in the laboratory of R/V Tansei Maru or 23 genera from 10 families were recognized, of Tokyo metropolitan institutes in Hachijōjima Is- which 22 were identified to species but one was land and Chichijima Island. Catch localities of limited to generic level identification. fishes examined are summarized in Table 1. Dige- neans were washed in saline, fixed in AFA under cover-slip pressure, and later stained with He- idenhain’s hematoxylin and mounted in balsam. The specimens were deposited in the Showa Me- Digenean Trematodes of Fishes 53

Red Sea (cited from Yamaguti, 1971), and also Order Strigeida La Rue, 1926 has been recorded in Okinawa Island (Yamaguti, Superfamily Bivesiculoidea Yamaguti, 1934 1942). Family Bivesiculidae Yamaguti, 1934 1. Bivesicula epinepheli Yamaguti, 1938 Subfamily Prosorhynchinae Nicoll, 1914 Materials examined. Single gravid specimen from the pyloric caeca and four immature highly 3. Prosorhynchus crucibulum (Rudolphi, 1819) damaged specimens from the intestine of Epi- Materials examined. Forty-six gravid speci- nephelus fasciatus (Forsskål, 1775) (Serranidae) mens from the intestine and single gravid speci- [Jn.: Akahata] caught at the St. Koyo 27–30 off men from the stomach of Variola louti (Forsskål, Chichijima Island, NSMT-Pl S75b and at the St. 1775) (Serranidae) [Jn.: Bara-hata] caught at the Wentle 5–9 near the coast of Chichijima Island, St. Wentle 3–5 near the cast of Chichijima Island, NSMT-Pl S77, respectively. Three gravid speci- NSMT-Pl S104 and 105, respectively. mens from the pyloric caeca and intestine of Den- Remarks. This species has been recorded tex abei Iwatsuki, Akazaki and Taniguchi, 2007 from several host fishes caught in the waters of (Sparidae) [Jn.: Kibire-akarenko] caught at the St. Mediterranean, Atlantic, Red Sea, Philippines and Koyo 18–19 off Chichijima Island, NSMT-Pl Peter the Great Bay (cited from Yamaguti (1971)), S103. Two gravid, rather damaged specimens and also from Japanese waters, i.e. Inland Sea of from the pyloric caeca of Pristipomoides flamen- Japan, East China Sea and Suruga Bay (Machida tosus (Valenciennes, 1830) (Lutjanidae) [Jn.: and Kamegai, 1997; Yamaguti, 1938a). Ōhime] caught at the St. Koyo 39–41 off Hahaji- ma Island, NSMT-Pl S86. 4. Prosorhynchus epinepheli Yamaguti, 1939 Remarks. This species was originally de- Masterials examined. Two gravid specimens scribed based on the materials from E. akaara from the pyloric caeca of Epinephelus fasciatus (Temminck and Schlegel, 1842) [Jn.: Kijihata] (Forsskål, 1775) (Serranidae) [Jn.: Akahata] caught in the Inland Sea of Japan (Yamaguti, caught at the St. Koyo 27–30 off Chichijima Is- 1938a), and has also been recorded from E. tri- land, NSMT-Pl S78. maculatus (Valenciennes, 1828) [Jn.: Nomi- Remarks. This species was originally de- nokuchi] caught off Tsushima Islands, Nagasaki scribed based on the materials from E. akaara (Machida et al., 1970). (Temminck and Schlegel, 1842) [Jn.: Kijihata] caught in the Inland Sea of Japan (Yamaguti, 1939). Superfamily Bucephaloidea Poche, 1907 Family Bucephalidae Poche, 1907 Subfamily Bucephalinae Poche, 1907 Superfamily Gymnophalloidea Odhner, 1905 Family Fellodistomidae Nicoll, 1909 2. Bucephalus varicus Manter, 1940 Subfamily Fellodistominae Nicoll, 1909 Materials examined. Five gravid specimens from the intestine and one gravid from the heart 5. Hypertrema ambovatum Manter, 1960 (probably be incidental) of Carangoides ortho- Materials examined. Single gravid specimen grammus (Jordan and Gilbert, 1882) (Carangidae) from the intestine of Synaphobranchus kaupii [Jn.: Nanyō-kaiwari] caught at the St. Koyo 64 Johnson, 1862 (Synaphobranchidae) [Jn.: Irako- and St. Koyo St. 56 off Nishinoshima Island, NS- anago] caught at the St. L-1-800 off Hatsushima MT-Pl S93 and 94, respectively. Island, NSMT-Pl S98 and three gravid specimens Remarks. This species has been recorded from the intestine of S. affnis Günther, 1877 [Jn.: wide variety of fish hosts including those of the Hora-anago] caught at the St. L-3-500 off Toshi- family Carangidae in the Pacific, Atlantic and ma Island, NSMT-Pl S99. 54 Toshiaki Kuramochi

Remarks. This species has been frequently gus japonicus (Houttuyn, 1782) (Branchiostegi- recorded from synaphobranchid and congrid ells dae) [Jn.: Aka-amadai] caught off Tokushima in the North Pacific off Japan, i.e. Suruga Bay Japan (Yamaguti, 1937). On the other hand, G. (Machida and Kamegai, 1997; Machida et al., propositus Yamaguti, 1938 differing from G. 2007) and Tosa Bay (Kuramochi, 2001) since the amadai in having preacetabular position of sinus original description from the New Zealand water sac has been described from a macrourid fish (Manter, 1960). However, Kuramochi (2009) Coryphaenoides (now addressed in Ventrifossa) failed to find this species from S. kaupii caught garmani which is one of the host fish examined off northen Honshū, Japan. here (Yamaguti, 1938a). However, Machida and Kamegai (1997) pointed G. propositus to be con- specific with G. amadai due to the fact that the Subfamily Piriforminae Skrjabin and Koval, position of sinus sac varied in individuals and 1957 placed their specimens from fishes of the family 6. Piriforma macrorhamphosi Yamaguti, 1938 Congridae, Aulopodidae and Macrouridae provi- Material examined. Single gravid specimen sionally in G. amadai. I followed Machida and from the intestine of Nezumia proxima (Smith Kamegai (1997) because the position of sinus sac and Radcliffe, 1912) (Macrouridae) [Jn.: Higo- varied between preacetabular and anterodorsal to sokodara] caught at the St. L-2-800 off Jōgashima the acetabulum also in the present materials. Island, NSMT-Pl S52. Remarks. This species have been found only Subfamily Lecithochiriinae Lühe, 1901 from the type host, Macroramphosus scolopax (Linnaeus, 1758) (Macroramphosidae) [Jn.: Sagi- 8. Lecithochirium priacanthi Yamaguti, 1953 fue] caught in the Japanese waters i.e. off Maisa- Material examined. Single young gravid ka, Shizuoka, off Kochi, Suruga Bay and off the specimen from the stomach of Epinephelus fas- Pacific coast of northern Honshū (Yamaguti, ciatus (Forsskål, 1775) (Serranidae) [Jn.: Akaha- 1938a; Machida and Kamegai, 1997; Kuramochi, ta] caught at the St. Koyo 27–30 off Chichijima 2009). A first record from a macrourid fish is rep- Island, NSMT-Pl S80. resented. Remarks. This species has been recorded from the type host Priacanthus hamrur (Forsskål, 1775) (Priacanthidae) [Jn.: Hōseki-kintoki] Superfamily Hemiuroidea Looss, 1899 caught in Celebes (Yamaguti, 1953) and from Family Hemiuridae Looss, 1899 many fishes in Hawaii (Yamaguti, 1970). Subfamily Glomericirrinae Yamaguti, 1958 7. Glomericirrus amadai Yamaguti, 1937 Subfamily Opisthadeninae Yamaguti, 1970 Materials examined. A total of four gravid specimens from the stomach of Nezumia proxima 9. Genolinea laticauda Manter, 1925 (Smith and Radcliffe, 1912) (Macrouridae) [Jn.: Materials examined. Single gravid and young Higo-sokodara] caught at the St. L-1-800 off Hat- gravid specimens each from the stomach of Cory- sushima Island, NSMT-Pl S55 and St. L-3-500 phaenoides nasutus Günther, 1877 (Macrouridae) off Toshima Island, NSMT-Pl S56a, and single [Jn.: Hana-sokodara] caught at the St. L-1-800 off gravid specimen from the stomach of Ventrifossa Hatsushima Island, and St. L-2’-1000 off garmani (Jordan and Gilbert, 1904) (Macrouri- Jōgashima Island, NSMT-Pl S62 and 63, respec- dae) [Jn.: Sagami-sokodara] caught at the St. L-3- tively. 500 off Toshima Island, NSMT-Pl S61. Remarks. This species has been recorded in Remarks. This species was originally de- the waters around Japan, off Kushiro and Nemuro scribed based on the materials from Branchioste- in the Pacific coasts of Hokkaido, Kitami-Yamato Digenean Trematodes of Fishes 55

Bank in Sea of Okhotsk (Machida & Araki, 1879 (Moridae) [Jn.: Chigodara] caught at the St. 1994), and in the Pacific coast off northern Takunan St. 2 off Hachijōjima Island, NSMT-Pl Honshū (Kuramochi, 2009). S107.

Subfamily Pleurinae Gibson and Bray, 1979 Subfamily Gonocercinae Skrjabin and Guschan- skaja, 1955 10. Dinosoma synaphobranchi Yamaguti, 1938 Material examined. Single gravid specimen from the stomach of Nezumia proxima (Smith and 14. Gonocerca phycidis Manter, 1925 Radcliffe, 1912) (Macrouridae) [Jn.: Higo-soko- Materials examined. Three gravid specimens dara], one young gravid specimen from the stom- found in the stomach of Nezumia proxima (Smith ach of Ventrifossa garmani (Jordan and Gilbert, and Radcliffe, 1912) (Macrouridae) [Jn.: Higo- 1904) (Macrouridae) [Jn.: Sagami-sokodara] and sokodara] caught at the St. L-2-800 off Jōgashima five gravid specimens form the stomach of Syna- Island, NSMT-Pl S58, two gravid specimens form phobranchus affinis Günther, 1877 (Synapho- the stomach of Synaphobranchus affnis Günther, branchidae) [Jn.: Hora-anago] caught at the St. 1877 (Synaphobranchidae) [Jn.: Hora-anago] L-3-500 off Toshima Island, NSMT-Pl S56, 60 caught at the St. L-3-500 off Toshima Island, NS- and 100, respectively. MT-Pl S101 and four gravid specimens from the stomach of Physiculus japonicus Hilgendorf, 11. Dinosoma tortum Yamaguti, 1938 1879 (Moridae) [Jn.: Chigodara] caught at the St. Material examined. Single gravid specimen L-3-500 off Hachijōjima Island, NSMT-Pl S106. from the intestine of Beryx mollis Abe, 1959 (Berycidae) [Jn.: Fūsen-kinme] caught at the St. Family Didymozoidae Monticelli, 1888 Takunan 7 off Hachijojima Island, NSMT-Pl S65. Subfamily Didymodiclininae Pozdnyakov, 1993 15. Didymodiclinus pacifcus (Yamaguti, 1938) Family Derogenidae Nicoll, 1910 Materials examined. Three intact male worms Subfamily Derogeninae Nicoll, 1910 and several female fragments from a cyst in the 12. Derogenes macrostoma Yamaguti, 1938 gill of Epinephelus retouti Bleeker, 1868 (Ser- Materials examined. Two gravid specimens ranidae) [Jn.: Akahata-modoki] caught at the St. from the stomach of Coryphaenoides nasutus Koyo 54–63 caught off Nishinoshima Island, NS- Günther, 1877 (Macrouridae) [Jn.: Hana-soko- MT-Pl S81, and several fragments form cysts in dara] caught at the St. L-2’-1000 off Jōgashima the gill of E. cyanopodus (Richardson, 1846) [Jn.: Island, NSMT-Pl S64. Tsuchihozeri] caught at the St. Koyo 36, off Ha- hajima Island, NSMT-Pl S82, Pristipomoides fla- 13. Derogenes varicus (O.F. Müller, 1784) mentosus (Valenciennes, 1830) (Lutjanidae) [Jn.: Materials examined. Two gravid specimens Ōhime] caught at the St. Koyo 12–13 off Chichi- from the stomach of Nezumia proxima (Smith and jima Island, NSMT-Pl S83, and of the same host Radcliffe, 1912) (Macrouridae) [Jn.: Higo-soko- caught at the St. Koyo 39–41 off Hahajima Is- dara] caught at the St. L-1-800 off Hatsushima Is- land, NSMT-Pl S84. One intact male also from land, NSMT-Pl S57, six gravid specimens from the pyloric caeca (probably be an incidental infes- the stomach of Bathygadus antrodes (Jordan and tation) of E. fasciatus (Forsskål, 1775) [Jn.: Aka- Gilbert, 1904) (Macrouridae) [Jn.: Anadara] hata] caught at the St. Koyo 27–30 off Chichijima caught in the L-1-700 off Hatsushima Island, NS- Island, NSMT-Pl S85. MT-Pl S59 and three gravid specimens ftrom the Remarks. Yamaguti (1938b) described this stomach of Physiculus japonicus Hilgendorf, species under the name of Gonapodasmius pacif- 56 Toshiaki Kuramochi cus was based on the materials from the gills of of Scombrops boops (Houttuyn, 1782) (Scom- epinepherid fish caught in the Pacific. Detailed bropidae) [Jn.: Mutsu] caught off Maisaka, Shi- catch locality is unknown. zuoka, Japan (Yamaguti, 1938a) and has been re- corded form the same host with the original description caught off Okinawa Island, NSMT-Pl Family Lecithasteridae Odhner, 1905 4801. Subfamily Lecithasterinae Odhner, 1905 16. Lecithaster gibbosus (Rudolphi, 1802) 19. Pseudopecoelus japonicus (Yamaguti, 1938) Material examined. Single gravid specimen Material examined. Single gravid specimen from the pyloric caeca of Nezumia proxima from the intestine of Beryx splendens Lowe, 1834 (Smith and Radcliffe, 1912) (Macrouridae) [Jn.: (Berycidae) [Jn.: Kinme-dai] caught at the St. Higo-sokodara] caught at the St. L-2’-1000 off Takunan 7 off Hachijojima Island, NSMT-Pl S66. Jōgashima Island, NSMT-Pl S54. Remarks. This species has been recorded from many deep-sea fishes caught off Maisaka, Shizuoka, Japan (type locality by Yamaguti Order Plagiorchiida La Rue, 1957 (1938a)), Suruga Bay (Machida and Kamegai, Superfamily Allocreadioidea Looss, 1902 1997; Yamaguti, 1938a), off Wakayama, NSMT- Family Opecoelidae Ozaki, 1925 Pl 3312, off Kochi NSMT-Pl 4079, 4091 and also Subfamily Opecoelinae Ozaki, 1925 off northern Honshū (Kuramochi, 2009). 17. Opecoelus minor Yamaguti, 1934 Materials examined. A total of nine gravid Subfamily Plagioporinae Manter, 1947 specimens from Laemonema flodorsale Okamu- ra, 1982 (Moridae) [Jn.: Hotei-itohikidara], one 20. Hamacreadium lethrini Yamaguti, 1934 from the intestine and seven from the pyloric cae- Materials examined. Four gravid specimens ca of the host caught near Kenken Yama off from the intestine of Epinephelus fasciatus Hachijōjima Island, NSMT-Pl S68b and NSMT- (Forsskål, 1775) (Serranidae) [Jn.: Akahata] Pl S70, respectively, and one from the intestine of caught at the St. Wentle 7–9 near the coast of the same host caught at the St. Takunan 3–6. off Chichijima Island, NSMT-Pl S73b, 74. Hachijōjima Island, NSMT-Pl S71. Remarks. The original description of this Remarks. This species was originally de- species was made on the materials from the stom- scribed based on the specimens from the intestine ach and intestine of Lethrinus haematopterus of Sebastodes güntheri (Jordan et Starks) and Se- Temminck and Schlegel, 1844 (Lethrinidae) [Jn.: bastichthys mitsukurii (Cramer) [sic] (both now Fuefukidai] caught off Wakayama, Japan probably be addressed in the genus Sebastes (Se- (Yamaguti, 1934) and has been recorded from L. bastidae)) caught in Mutsu Bay, northern Japan harak (Forsskål, 1775) [Jn.: Mato-fuefuki] and (Yamaguti, 1934). from Lutjanus fulvifamma (Forsskål, 1775) (Lut- janidae) [Jn.: Nise-kurohoshi-fuefuki] caught off 18. Pseudopecoelus elongatus (Yamaguti, 1938) Okinawa Island (Dyer et al., 1988). Materials examined. Two gravid specimens from the intestine of Cookeolus japonicus (Cuvi- 21. Helicometra epinepheli Yamaguti, 1934 er, 1829) (Priacanthidae) [Jn.: Chikame-kintoki] Materials examined. Two and four gravid caught at the St. Koyo 67, off Nishinoshima Is- specimens from the pyloric caeca and intestine, land, NSMT-Pl S91. respectively of Epinephelus fasciatus (Forsskål, Remarks. This species was originally de- 1775) (Serranidae) [Jn.: Akahata] caught at the scribed under the name of Cymbephallus elonga- St. Koyo 27–30 off Chichijima Island, NSMT-Pl tus based on the materials from the small intestine S75a, 76. Digenean Trematodes of Fishes 57

Remarks. This species was originally de- [Jn.: Onaji-nezumidara] caught off Northwestern scribed based on the materials from E. akaara Scotland, and then they transferred P. beringi to (Temminck and Schlegel, 1842) [Jn.: Kijihata] the genus Tellervotrema. and E. tsirimenara (Temminck and Schlegeli, Kuramochi (2001) described a new species P. 1842) [sic] (the same host in the present study) katadara based on the materials from Gadomus caught in the Inland Sea of Japan (Yamaguti, colletti Jordan and Gilbert, 1904 (Macrouridae) 1938a), and has also been recorded from Thalas- [Jn.: Katadara] caught in Tosa Bay, ignoring the soma purpureum (Forsskål, 1775) (Labridae) [Jn.: presence of T. beringi, and later he proposed a Kinubera] caught off Okinawa Island (Yamaguti, new combination T. katadara suggesting that T. 1942). katadara might be closely related metrically with T. beringi (Kuramochi, 2009). And finally in the 22. Podocotyle atomon (Rudolphi, 1802) present study, T. katadara is considered synony- Material examined. Single specimen with no mous with T. beringi due to the direct citation of egg from the intestine of Laemonema flodorsale the original description and figure of T. beringi by Okamura, 1982 (Moridae) [Jn.: Hotei-itohikidara] Mamaev (1965). caught near Kenken Yama off Hachijōjima Island, NSMT-Pl S67. 24. Tellervotrema sp. Remarks. In the waters around Japan, this Material examined. Single gravid specimen species has been recorded from Askoldia variega- found in the intestine of Nezumia proxima (Smith ta knipowitschi Soldatov, 1927 (Stichaeidae) [Jn.: and Radcliffe, 1912) (Macrouridae) [Jn.: Higo- Doro-ginpo], Sebastolobus macrochir (Günther, sokodara] caught at the St. L-2-800 off Jōgashima 1880) (Scorpaenidae) [Jn.: Kichiji], Platichthys Island, NSMT-Pl S51. stellatus (Pallas, 1787) (Pleuronectidae) [Jn.: Nu- ma-garei] and Pleuronectes punctatissimus Superfamily Lepocreadioidea Odhner, 1905 (Steindachner, 1879) (Pleuronectidae) [Jn.: Suna- Family Lepocreadiidae (Odhner, 1905) garei] caught off eastern Hokkaido, northern Ja- Subfamily Lepocreadiinae Odhner, 1905 pan (Machida and Araki, 1994). 25. Opechona bacillaris (Molin, 1859) 23. Tellervotrema beringi (Mamaev, 1965) Materials examined. Twenty-four gravid Plagioporus katadara Kuramochi, 2001: 23–24, specimens from the pyloric caeca and intestine, figs. 7–9. and 22 immature specimens from the intestine of Tellervotrema katadara Kuramochi, 2009: 30– Evoxymetopon poeyi Günther, 1887 (Trichiuridae) 31. [Jn.: Hirenaga-yumetachi] caught at the St. Koyo Materials examined. Ten gravid specimens 22 off Chichijima Island, NSMT-Pl S96 and 97, found in the pyloric caeca of Nezumia proxima respectively. (Smith and Radcliffe, 1912) (Macrouridae) [Jn.: Remarks. This species has been recorded Higo-sokodara] caught at the St. L-2’-1000 off from wide variety of host fishes of the family Ga- Jōgashima Island, NSMT-Pl S53. didae, Centrophidae, Caproidae, Scombridae and Remarks. This species was originally de- Cyclopteridae caught in North American and scribed under the name of Plagioporus beringi Russian coasts (cited from Yamaguti (1971)). based on the material from Coryphaenoides sp. Only record of this species from the waters (Macrouridae) caught in the Bering Sea (Ma- around Japan was made by Zhukov (1960) in Pe- maev, 1965). On the other hand, Gibson and Bray ter the Great Gulf, Sea of Japan. (1982) established the genus Tellervotrema to in- clude their new species T. armstrongi from Ne- zumia aequalis (Günther, 1878) (Macrouridae) 58 Toshiaki Kuramochi

based on the materials from the pyloric caeca of Subfamily Lepidapedinae Yamaguti, 1958 Epinephelus sp. (Serranidae) (type host) and E. 26. Lepidapedon coelorhynchi Yamaguti, 1938 quernus Seale 1901 caught off Hawaii (Yamaguti, Materials examined. Single gravid specimen 1970), and seems to have never been recorded each from the intestine of Laemonema flodorsale from the waters around Japan. Okamura, 1982 (Moridae) [Jn.: Hotei-itohikidara] caught near Kenken Yama off Hachijōjima Island, Family Acanthocolpidae Lühe, 1906 NSMT-Pl S68a and caught at the St. Takunan 3–6 off Hachijōjima Island, NSMT-Pl S69. 29. Stephanostomum carangis (Yamaguti, 1951) Remarks. After the original description by Materials examined. Ten gravid specimens Yamaguti (1938a) based on the material from from the intestine of Carangoides orthogrammus Coelorhynchus sp. caught off Maisaka, Shizuoka, (Jordan and Gilbert, 1882) (Carangidae) [Jn.: central Japan, this species has been frequently re- Nanyō-kaiwari] caught at the St. Koyo 64 off corded from macrourid fishes caught off Ryūkyū Nishinoshima Island, NSMT-Pl S95. Islands, the East China Sea (Kuramochi, 2005), Remarks. This species was originally de- in Sagami Bay (Kuramochi, 2006), central Japan scribed based on the materials from Caranx [sic] and off the Pacific coast of northern Honshū (now being addressed in the genus Kaiwarinus) (Kuramochi, 2009). equula (Temminck and Schlegel, 1844) (Carangi- dae) [Jn.: Kaiwari] caught off Hamazima, Mie, 27. Lepidapedoides kalikali Yamaguti, 1970 Japan (Yamaguti, 1951) and has been recorded Materials examined. Two gravid specimens from the same host with the original description from the pyloric caeca of Pristipomoides flamen- in the East China Sea (Kuramochi, 2005). tosus (Valenciennes, 1830) (Lutjanidae) [Jn.: Ōhime] caught at the St. Koyo 12, 13 off Chichi- 30. Stephanostomum casum (Linton, 1910) jima Island, NSMT-Pl S87. Materials examined. Two gravid specimens Remarks. This species has been recorded from the intestine of Epinephelus fasciatus from the pyloric caeca of P. sieboldii (Bleeker, (Forsskål, 1775) (Serranidae) [Jn.: Akahata] 1854) [Jn.: Himedai] caught off Hawaii (original caught at the St. Wentle St. 5–9 near the coast of description by Yamaguti (1970)) and Pristipom- Chichijima Island, NSMT-Pl S79. oides auricilla (Jordan, Evermann and Tanaka, Remarks. This species has been recorded 1927) (Lutjanidae) [Jn.: Kimadara-himedai] mainly from fishes of the genus Lutjanus (Lutjan- caught off Koror Island, Palau, NSMT-Pl 4661 idae) in the waters of Caribbean, Bermuda, Galá- and 4695. pagos Islands, the Red Sea and New Caledonia (Duria and Manter, 1969), and also from fish of 28. Lepidapedoides querni Yamaguti, 1970 the genus Epinephelus (Manter, 1947). Materials examined. Single gravid specimen each from the stomach and intestine of Epineph- Discussion elus fasciatus (Forsskål, 1775) (Serranidae) [Jn.: Akahata] caught at the St. Wentle 7–9 near the Thirty species of digenean trematodes obtained coast of Chichijima Island, NSMT-Pl S72 and in this study can be divided into three groups by 73a, respectively, and single gravid specimen their hosts’ catch localities i.e., 10 species ob- from the pyloric caeca of Pristipomoides flamen- tained from Sagami Bay, 10 species off Izu Is- tosus (Valenciennes, 1830) (Lutjanidae) [Jn.: lands including four species common with those Ōhime] caught at the St. Koyo 12, 13 off Chichi- from Sagami Bay and 14 species off Ogasawara jima Island, NSMT-Pl S88. Islands (Table 2). Unexpectedly, the present spe- Remarkas. This species originally described cies from Sagami Bay and off Izu Islands con- Digenean Trematodes of Fishes 59

; i - - e ) t r o h 7 u o t d ) f 9 g

i e 0 a r 9 l l 2 e a 1 a ) ( m t (

a C C 2 ) e f i

l 2 2 Y a P a

( u j

w 2 ,

g

; a e , a 8 e G s

e 1 1 B t N e

m

2 S a ; ; ; n

a ( ) i e c

a k r 2 p K e n fi

u i 4 p a G S s d t i c

9 t l n e a h d 1 i o a ( h e o P h

h

t

i

k a k R P t i h r

d t ; u e h O i ; r t s

g S a h o e e

d a ) c e ; P s h n N 2 a

t n S

m a a ;

i 2

l ; a d t e s ( M s t d r c

a

n ) Y I s , j a

e a

a fi 2 t

, a

i 8 s e r

t 2 R u ) 7 o c ; o e ( S

s 2 1 P

) c a ; g

a

h

2 d 4 ; ; d t c P a n (

i ) E e n 9 d

p t a O e 9 a a i 9 n e á R n l ) h 3 l s e a 1 t h a ; a l s 0 a

( 9 t l S ;

c e

) t n u 2 1 i i ) ; G c ( t a ( e Z 3

i

k 2 y

R

A ; t e i n n

i 2

a a 2 i i r t a ( n ) a r d w ( e

a l h

u d B a 1 e t G n ) h

u l A a )

g u

1 t w t C a 2 t e a e

N A ( a 2

a l r d

s

t

2 ; ) m A n ; S 1

a

e s e u n a r

m , H 5 n ( a t a e a

a

h P e e a r k 1 a 1

c ;

t d W h d i ; ( E S ) a i

u e 2 a s B t Y ;

r ) ) ; r

n ( s 9 p ; d n d , ; ; . c c

e t g 0 0 d o a i r e c 1 a l 6 l l n d y y fi fi o i n 2 2 ( h r l o m i i t i a a

a 1 a ( ( D F h r c d r

a c

c c c ) s e e ; i i ; ; A k e w a B r e e a a e i i u ) 2 )

b t w Z s e e r t t i a a

b h P P O 1 2 B b f s A b M n n t

a i i s ( ( s i e d

i i 8 r

w w w e l e e , e r e e e e u e a a t 3 a a o r r a a r e e a h h h 7 h h i i o

9 n i ; T C T N G M G T T M H H C n n G N T M 1 ) v e

( 9 e s n ) i r 0 r t e 3 ) ) p n 0 e r u

) 2 7 7 a 2

h

e g p ) 3 ) ) , ) ) , ) ) , t ( p

a h

r 6 1 6 7 6 6 6 6 6 6 6 a t i . e

( ( ( ( ( ( ( ( ( ( ( o J l m

h

n h a c P i N + + + + + + + + + + + t

- o

Y s

T , e n n m i n i 5 i t a M

a i 1 r s l

S p d u ; a a a ) ) e N e c J

K a r 3

f o n l , 8 a 2 i

o

a L 6 3

) ) ) ) ) ) ) r , ) ) r a s t ; 9 e t 3 4 6 4 4 4 4 4 4 4 n ) n n 1 h 1 1 1 1 1 1 1 1 1 1 b a 6 t ( e e ( ( ( ( ( ( ( ( ( (

p

o 0 i c O

a t m + + + + + + + + + + 0 i J s u

2 c

l ) ) ) g ( e e

a a i 4 0 0 a i p r g ) 1 1 c 1 t y h s

m

u a ) ) 4 , ) , ) ) , a e c a r d n 8 8 1 8 8 8 8 8 8 o p B u ( ( ( e ( ( ( ( ( ( Y e

s S , h m

C + + + + + + + + + s a 4 i 0 r l 1

u i 3 b ;

) u K m f y

4 p , a ) ) ) ) a o 3 n 5 g

5 5 5 5

B 9 u ( a ( ( ( ; s

1 ) , S e ( + + + + 5

3 i i t 0 2 t i

0

; u l n ) 2 n g a ( a i 1 a

c p i 7 s a m h o a 9 n J l a c e

1 a

r ) ) ( o Y n

p n a 8 4 r i ,

a t m e ) 1 ) ) r ) 1 o 3 J

a u

e h 3 , 4 ) ) 3 ) 3 ) , ) ) ) ) 1 r t s g

n h 1 4 1 4 9 2 3 2 3 9 3 3 3 3 u ; r t u a ( ( ( ( ( ( ( ( ( ( ( ( ( ( d )

e o K r O 0 m

s + + + + + h + + + + + + + + + , t 6 o a

4 u 9 c ū

s Y

; o 1 ) ) ) y e d ) ( S r 7 ) 7 3

k n m 1

r 1 2 1 2 a ū o

0 e l ( ( ( ( r f y t

0 s f

I n + + + + o R 2

d ( a

e i y

t M i r h a y

, c r c a d

s a 2 , o u d 1 t 2 m w

m s n ; 2 a

a ) a t s ; m r l 5 ) n a s u u 6 e 0 I g s 9 K 6 S

O e + + + + + + + + + + + + + + 1 , 9 r ( 3 1

p

(

s ; v

. )

e d e v 2 8 u h a n

o t z 8

a k e I l m 9 n l s u a i 1 I b h + + + + + + + + + + ( s

M a . Z

e

i i , , t T 1 i 1 m l y 1 2 a

a a et al

;

g ; c ) r B ) a o 7 e 0 S 0 L + + + + + + + + + + y 7

0 9 ) D ) n 2

1 e i e , ( ) (

a a )

2 e . ) )

d i ) d d e a ; ) t e ) i e i e e ) ) ) ) a d e a ) u e a ) p n i a e e e 9 d a m l e i i d a g e d i a a d a et al i ) 6 i d a o a o ) ) a d ) a i

) d l p i d d t t d e i 9 ) c e l e d a e a e l i i d o a i i s m ) i b a ) l l m i e 1 a r a i e a a o a o d z i h ) d r e e o ( e e a r o d i a ) d u c d d d d h h

t o d ) i e p a

a a u i i ) i c i i t o o e h d r ) Y s o o ) i p l a e l a i e r e n i

d e d i c c l o a c n e e m s , l r e e i h e a i e c m e l e ) d d t ) a e e d a a ) t p l a d m r t r e y i c 0 c u o e e d o e a u g i e n l d c p e p s e e s o e c n i d u d c o 2 u c i c a e l a F a o i n a i r M i a i a

e B H l a o o l r L e p (

r e A O O ; H d e ( ( d s n h B u

, d e c h ( c h e c i ( ( ( p )

( i e e D p m i p ( i t M t e

e g l

p l e 0 o

( e i o r 3 F e A L

n e v g o e e D O c p O 1 ( c m d ( p u i ( 5 L r

( e (

( o c

o i o e H e e ( ;

n e

r 9 e O r (

c B u c ) p

a ( a L ( 1 e L m H e

e 0

D ( ( ( B ( p e O

a (

p

p ( 7

D (

i i

( t r H 9 n O O i ( u ( u ( 1

( g . s

D . y a

p e , i s d l m 1 i u

a t . s s et al m Y

e t a , a f c n 9 ( d r e

i 1 u s

s h ; o e e c ) r i s

a 1 c p a

5 e t M e 9 p

a , h 1 Lecithochirium priacanthi Didymodiclinus pacifcus Opechona bacillaris Lepidapedoides kalikali Bucephalus varicus Hamacreadium lethrini Hamacreadium Helicometra epinepheli Prosorhynchus epinepheli Prosorhynchus Stephanostomum carangis Pseudopecoelus elongatus Prosorhynchus crucibulum Prosorhynchus Lepidapedon coelorhynchi Lepidapedon coelorhynchi Bivesicula epinepheli Opecoelus minor Pseudopecoelus japonicus Podocotyle atomon Gonocerca phycidis Gonocerca Dinosoma tortum Derogenes varicus Derogenes Dinosoma synaphobranchi Lepidapedoides querni Stephanostomum casum Derogenes macrostoma macrostoma Derogenes Glomericirrus amadai S Lecithaster gibbosus beringi Tellervotrema Tellervotrema ambovatum Hypertrema t Piriforma macrorhamphosi Genolinea laticauda D 9 ( 60 Toshiaki Kuramochi tained only four previously recorded species from Acknowledgements the same areas. This is probably due to that previ- ous records contain species from shallow water I thank Mr. Yuji Aoki and Mr. Kunihisa Yama- fishes caught near the surface (Shimazu and Na- guchi, Tokyo Metropolitan Ogasawara Fisheries gawasa, 1985a, b), instead between 497 m and Center, and Mr. Junji Yonezawa and Mr. Yoshihi- 1061 m deep in the present study. Thus the pres- ro Horii, Hachijō Branch, Tokyo Metropolitan ent species composed of deep sea species, al- Center for Agriculture, Forestry and Fisheries on though lacking genus Proctophantastes and Neo- Izu Islands for giving me opportunities and facili- steganoderma recorded by Kuramochi (2006). It ties to carry out parasitological surveys. Thanks is also stressed that many of present species form are also due to the captain Ichiro Gonoi and the Sagami Bay and off Izu Islands (12 of 15 species, crew of the R/V Koyo, the captain Hisao Shimizu excluding Tellervotrema sp.) have previous re- and crew of R/V Takunan and the captain Syo- cords off northern Japan and/or those from cold ichi Suzuki and the crew of the R/V Tansei Maru northern waters (Table 2). This indicates that ad- for cooperation, effort and skill of survey opera- vances of arctic–subarctic species extend into the tion. wataers around Izu Islands. There was no species common between those References obtained off Ogasawara Islands and those from Sagami Bay–off Izu Islands, even though previ- Durio, W.O. and H.W. Manter, 1969. Some digenetic ous records from Sagami Bay and adjoining seas trematodes of marine fishes of New Caledonia. III. were included (Table 2). However, it should be Acanthocolpidae, Haploporidae, Gyliauchenidae, and Cryptogonimidae. Journal of Parasitology, 55: 293– noted that 14 species obtained off Ogasawara Is- 300. lands contained seven species which previously Dyer, W.G., E.H. Williams Jr. and L.B. Williams, 1988. recorded from southern and central Japan, sug- Digenetic trematodes of marine fishes of Okinawa, Ja- gesting close relation of fish digenean fauna be- pan. Journal of Parasitology, 74: 638–645. tween off Ogasawara Islands and off main islands Gibson, D.I. and R.A. Bray, 1982. A study and recogni- tion of Plagioporus Stafford, 1904 (Digenea: Opecoeli- of Japan. Four species were common between dae) and related genera, with special reference to forms those off Ogasawara Islands and off Ryūkyū Is- from European Atlantic waters. Journal of Natural His- lands but three of them also had records off tory, 16: 529–559. southern and central Japan. This also indicates Goto, S. and Y. Ozaki, 1929. Brief notes on new trema- that digenean fauna off Ogasawara Islands more todes. II. Japanese Journal of Zoology, 2: 369–381. closely relates to that off main islands of Japan Ichihara, A., Sh. Kamegai, K. Kato, S. Kamegai, H. Non- obe T. Sakata and M. Machida, 1963a. On the parasites than off Ryūkyū Islands, although these two areas of fishes and shell-fishes in the Bay of Tokyo. (2) (3) latitudinally quite similar. In addition, it should Parasites of Hexagrammos otakii Jordan et Starks. be also noted that the remaining six species, Monthly Report of Meguro Parasitological Mususeum, which were newly recorded in Japanese waters, (48): 2–5. (In Japanese.) probably have tropical–subtropical origins. Ichihara, A., Sh. Kamegai, K. Kato, S. Kamegai, H. Non- Present small collection failed to indicate close obe T. Sakata and M. Machida, 1963b. On the parasites of fishes and shell-fishes in the Bay of Tokyo. (2) (4) relation between digenean fauna in Sagami Bay, Parasites of Callionymus flagris Jordan & Fowler. and those off Izu Islands and Ogasawara Islands, Monthly Report of Meguro Parasitological Mususeum, however it is preliminarily suggested that advanc- (50): 2–5. (In Japanese.) es of arctic–subarctic digenean species are attenu- Ichihara, A., Sh. Kamegai, K. Kato, S. Kamegai, H. Non- ated in the waters around Izu Islands and fauna obe T. Sakata and M. Machida, 1963c. On the parasites of fishes and shell-fishes in the Bay of Tokyo. (No. 3) off Ogasawara Islands is composed both of tem- Parasites of Mugil cephalus, Apogon linetus, Chaetu- perate water and tropical–subtropical species. richthys hexanema. Monthly Report of Meguro Parasi- Digenean Trematodes of Fishes 61

tological Mususeum, (52): 2–5. (In Japanese.) obe T. Sakata and M. Machida, 1963b. Studies on the Ichihara, A., K. Kato, Sh. Kamegai, S. Kamegai, H. Non- parasites of fishes and shell-fishes collected in the Bay obe and M. Machida, 1963d. On the parasites of fishes of Sagami. (No. 1) (2) Parasites of Auxista peinozoma and shell-fishes in the Bay of Tokyo. (4) Parasites of Bleeker. Monthly Report of Meguro Parasitological Trachurus japoicus Tem. & Sch. and Mytilus edulis Mususeum, (54): 2–5. (In Japanese.) Linne. Monthly Report of Meguro Parasitological Kato K., A. Ichihara, Sh. Kamegai, S. Kamegai, H. Non- Mususeum. (In Japanese.) obe T. Sakata and M. Machida, 1963c. Studies on the Ichihara, A., K. Kato, Sh. Kamegai, S. Kamegai, H. Non- parasites of fishes and shell-fishes collected in the Bay obe and M. Machida, 1964a. Studies on the parasites of of Sagami. (No. 1) (3) Parasites of Promethichthys pro- fishes and shell-fishes collected in the Bay of Sagami. metheus (Cuvier). Monthly Report of Meguro Parasito- (No. 2) Parasites of Trachrus japonicus (Tem. & Schl.) logical Mususeum, (55/56): 2–5. (In Japanese.) (2). Monthly Report of Meguro Parasitological Musu- Kuramochi, T., 2001. Digenean trematodes of anguilli- seum, (64): 2–6. (In Japanese.) form and gadiform fishes from deep-sea areas of Tosa Ichihara, A., K. Kato, Sh. Kamegai, S. Kamegai, H. Non- Bay, Japan. In: Fujita, T., H. Saito and M. Takeda (eds.), obe and M. Machida, 1964b. Studies on the parasites of Deep-Sea Fauna and Pollutants in Tosa Bay. National fishes and shell-fishes collected in the Bay of Sagami. Science Museum Monographs, (20): 19–30. (No. 2) Parasites of Trachrus japonicus (Tem. & Schl.) Kuramochi, T., 2005. Digenean trematodes of fishes from (2). Monthly Report of Meguro Parasitological Musu- deep-sea areas off Ryukyu Islands, southern Japan. In: seum, (65): 2–5. (In Japanese.) Hasegawa K., Shinohara, G and Takeda M. (eds.), Ichihara, A., K. Kato, Sh. Kamegai, S. Kamegai, H. Non- Deep-Sea Fauna and Pollutants in Nansei Island, Na- obe and M. Machida, 1965a. Studies on the parasites of tional Science Museum Monographs, (29): 23–35. fishes and shell-fishes collected in the Bay of Sagami. Kuramochi, T., 2006. Digenean trematodes of fishes from (No. 3) Part 1. Parasites of Parapristipoma trilineatum the Sagami Sea, central Japan. Memoirs of National (Thunberg). Monthly Report of Meguro Parasitological Science Museum, Tokyo, (40): 175–186. Mususeum, (74/75): 2–6. (In Japanese.) Kuramochi, T., 2009. Digenean trematodes of fishes from Ichihara, A., K. Kato, Sh. Kamegai, S. Kamegai, H. Non- deep-sea areas off the Pacific coast of northern Honshu, obe and M. Machida, 1965b. Studies on the parasites of Japan. In: Fujita, T. (ed.), Deep-Sea Fauna and Pollut- fishes and shell-fishes collected in the Bay of Sagami. ants off Pacific Coast of Northern Honshu, Japan, (No. 3) Part 2. Parasites of Psenopsis anomala (Tem. & 2005–2008. National Museum of Nature and Science Schl.). Part 3. Parasites of Gephyroberyx japonicus Monographs, (39): 25–37. (Döderlein). Monthly Report of Meguro Parasitological Machida, M. and J. Araki, 1994. Some trematodes and Mususeum, (78/79/80): 2–14. (In Japanese.) cestodes in fishes from off eastern Hokkaido, northern Ichihara, A., K. Kato, Sh. Kamegai, S. Kamegai, H. Non- Japan. Memoirs of National Science Museum, Tokyo, obe and M. Machida, 1966. On the parasites of fishes (27): 87–92. and shell-fishes in the Bay of Tokyo. (5) Parasites of Machida, M. and Sh. Kamegai, 1997. Digenean trema- Kareius bicoloratus (Basilewsky). Monthly Report of todes from deep-sea fishes of Suruga Bay, central Ja- Meguro Parasitological Mususeum, (85/86/87): 2–14. pan. In: Deep-Sea Fauna and Pollutants in Suruga Bay. (In Japanese with English summary.) National Science Museum Monographs, (12): 19–30. Ichihara, A., K. Kato, Sh. Kamegai and M. Machida, Machida, M., A. Ichihara and Sh. Kamegai, 1970. Dige- 1968. On the parasites of fishes and shell-fishes in Sag- netic trematodes collected from the fishes in the sea ami Bay. (No. 4) Parasitic helminths of mackerel, north of Tsushima Islands. Memoirs of National Sci- Pneumatophorus japonicus (Houttuuyn). Research Bul- ence Museum, Tokyo, (3): 101–112. letin of Meguro Parasitological Museum, (2): 45–60. Machida, M., Sh. Kamegai and T. Kuramochi, 2006. Zoo- Kamegai, S., Sh. Kamegai, H. Nonobe and K. Kato, 1962. gonidae (Trematoda, Digenea) from fishes of Japanese On the parasite of Astroconger myriaster (1). Japanese waters. Bulletin of National Museum of Nature and Sci- Journal of Parasitolology, 11: 309. (Abstract in Japa- ence, Ser. A, 32: 95–104. nese.) Machida, M., Sh. Kamegai and T. Kuramochi, 2007. Fell- Kato K., A. Ichihara, Sh. Kamegai, S. Kamegai, H. Non- odistomidae (Trematoda, Digenea) from deep-sea fishes obe T. Sakata and M. Machida, 1963a. Studies on the of Japan. Bulletin of National Museum of Nature and parasites of fishes and shell-fishes collected in the Bay Science, Ser. A, 33: 93–103. of Sagami. (No. 1) (1) Parasites of Beryx splendens Mamaev, 1965. [Helminths of fish in the Bering Sea.] In: Lowe. Monthly Report of Meguro Parasitological Leonov, A.A., Y.L. Mamaev and P.G. Oshmarin (eds.) Mususeum, (53): 2–5. (In Japanese.) [Parasitic Worms of Domestic and Wild Animals], pp. Kato K., A. Ichihara, Sh. Kamegai, S. Kamegai, H. Non- 168–188, Akademiya Nauk SSSR, Vladivostok. (In 62 Toshiaki Kuramochi

Russian.) of Zoology, 5: 249–541. Manter, H.W., 1934. Some digenetic trematodes from Yamaguti, S., 1937. Studies on the helminth fauna of Ja- deep-water fish of Tortugas, Floroda. Carnegie Institu- pan. Part 17. Trematodes from a maine fish, Bran- tion of Washington Publication, (435): 257–345. chiostegus japonicus (Houttuyn). Published by author. Manter, H.W., 1947. The digenetic trematodes of marine 15pp. fishes of Tortugas, Florida. American Midland Natural- Yamaguti, S., 1938a. Studies on the helminth fauna of Ja- ist, 38: 257–416. pan. Part 21. Trematodes of fishes, IV. Published by au- Manter, H.W., 1960. Some additional Digenea (Tremato- thor. 139pp., 1 pl. da) from New Zealand fishes. In: Libro homenaje al Dr Yamaguti, S., 1938b. Studies on the helminth fauna of Ja- Eduardo Caballero y Caballero, pp. 197–201, Secretaria pan. Part 24. Trematodes of fishes, V. Japanese Journal de Educación Publica, Mexico. Shimazu, T., Taxonom- of Zoology, 8: 16–74, pls. III–XI. ic notes on Cephalolepidapedon saba and Opechona Yamaguti, S., 1939. Studies on the helminth founa of Ja- orientalis (Trematoda: Lepocreadiidae) of the marine pan. Part 26. Trematodes of fishes, VI. Japanese Jour- fish, Scomber japonicus (Teleostei: Scombridae). Jpn. J. nal of Zoology, 8: 212–230, pls. 29–30. Parasitol., 38: 232–235. Yamaguti, S., 1942. Studies on the helminth founa of Ja- Shimazu, T., 1989. Taxonomic notes on Cephalolepidape- pan. Part 39. Trematodes of fishes mainly from Naha. don saba and Opechona orientalis (Trematoda: Lepo- Transactions of the Biogeographical Society of Japan, creadiidae) of the marine fish, Scomber japonicus (Te- 3: 329–397, pl. XXIV. leostei: Scombridae). Japanese Journal of Yamaguti, S., 1951. Studies on the helminth fauna of Ja- Parasitology, 38: 232–235. pan. Part 44. Trematodes of fishes, IX. Arbeiten aus der Shimazu, T. and Sh. Kamegai, 1990. A new species of the Medizinischen Universität zu Okayama, 7: 247–282, genus Discogasteroides (Digenea: Fellodistomidae) pls. 1–5. from the boxfish Ostracion immaculatus in Japan. Jap- Yamaguti, S., 1953. Parasitic worms mainly from Celebes anese Journal of Parasitology, 39: 50–53. part 3. Digenetic trematodes of fishes, II. Acta Medici- Shimazu, T. and K. Nagawasa, 1985a. Trematodes of ma- nae Okayama, 8: 257–295, pls. 1–4. rine fishes from Moroiso Bay, Misaki, Kanagawa Pre- Yamaguti, S., 1970. Digenetic Trematodes of Hawaiian fecture, Japan. Journal of Nagano-ken Junior College, Fishes. pp. 246, pls. 341, Keigaku Publishing, Tokyo. (40): 7–15. Yamaguti, S., 1971. Synopsis of Digenetic Trematodes of Shimazu, T. & K. Nagawasa, 1985b. Lepocreadium kame- Vertebrates. pp. 1074, pls. 1–249, Keigaku Publishing, gaii sp. n. (Trematoda: Lepocrediidae), a new parasite Tokyo. of marine fishs from Moroiso Bay, Misaki, Kanagawa Zhukov, E.V., 1960. Endoparasitic worms of fishes from Prefecture, Japan. Zoological Science, 2: 817–819. Sea of Japan, and South Kurile shallow waters. Trudy Yamaguti, S., 1934. Studies on the helminth founa of Ja- Zoological Institute and Academy Nauk SSSR, 28: pan. Part 2. Trematodes of fishes, I. Japanese Journal 1–146. (In Russian with English summary.) Digenean Trematodes of Fishes 63

相模湾および伊豆諸島・小笠原諸島産魚類の二生吸虫相

倉持利明

相模湾および伊豆諸島・小笠原諸島周辺海域で魚類を採集し，それらの寄生虫を調査したと ころ，19 種の魚類から 10 科 23 属 30 種の二生吸虫類を得ることができた．これらのうち相模 湾から伊豆諸島周辺から得られたものは，相模灘において既に記録されている種は 4 種にとど まり，多くが北日本を含む日本沿岸に広く分布する種であった．一方，小笠原諸島から得られ た種は多くが熱帯・亜熱帯性の種であったが，北日本を除く日本本土各地から記録のある種も 多く含んでいた．これらの結果は予察的ではあるが，寒帯・亜寒帯性の種は伊豆諸島近海まで 進出していること，小笠原諸島産魚類の二生吸虫相は，熱帯・亜熱帯性の種に加えて温帯性の 種も多く含むことを示している．