A new species Myxobolus guanqiaoensis was found in the liver and abdominalcavity of Allogynogenetic silver prassian carp at Guanqiao, in Oct l996. The typespecimens were preserved in the Laboratory of Hsh ixseases, In...A new species Myxobolus guanqiaoensis was found in the liver and abdominalcavity of Allogynogenetic silver prassian carp at Guanqiao, in Oct l996. The typespecimens were preserved in the Laboratory of Hsh ixseases, InshtUte of Hydrobiology,The Chinese Academy of Sciences, Wuhan, China.apcobolus guanqiaoensis sp. nov.Host and site: Allogynogenehc si1ver crucian carp (Carassius auratus gibelio l XCyPrinus carP io J), Liver and abdowhnal cavity.Locality: Guanqiao, Wuhan, China.Infechon ratet above 6o%.Cystt Oval or elliptic in fOrm, white in color; 2.l-4.Ocm in diametef, embracedby a tf8nsparent membrane.Sporest Spores elongatedsioval in thecal view. Pointed at anterior end and blunhyround in posterior end; l-3 V-shaPed folds at posterior end; elongated elliphc insutural view, sutUral line S-shaPed and dishnct shell valves smooth; intercaPsularaPPendix dishnct. Two polar capsules eggplant unequal in size, polar caPsule locatedat l / 2 position of spore length; 7-8pm flat coiled filamenLChmensions of 2o fresh spores f tength l9.6(l8.2-22.o)pm. width Io.8(9.O-l3.2)pm. thickness 8.3(8.O-9.o)Um, large po1ar capsules 9.5(8.8-lO.l) by 3.7(3.O-4.4)Um,small polar caPsules 8.4(7.9-9.8) by 3.6(3.2-4.O)Um. Polar caPsule nuclei sitUated atthe inner of tWo polar capsules. An indistinct iodinophilous vacuole and two roundgerminal nuclei.The shape of trhis new sPecies is similar to apcobolus gigi, M)Af)bolus kDi andapcobolus aureatus, but differs from them in dimensions of sPore, the size of POlarcapsule, suture line and host.展开更多
Two new species of myxosporeans (Myxosporea:Bivalvulida),Mitrapora yiduensis sp.nov.and Myxobolus tuenfengensis sp.nov.,parasitic in freshwater fishes collected from the Yangtze River of China are described in this pa...Two new species of myxosporeans (Myxosporea:Bivalvulida),Mitrapora yiduensis sp.nov.and Myxobolus tuenfengensis sp.nov.,parasitic in freshwater fishes collected from the Yangtze River of China are described in this paper.All body organs of the host fishes,Siniperca chuatsi Basilewsky and Saurogobio dabrui Bleeker were examined and twenty spores of each myxosporean were measured with an eyepiece micrometer.All the measurement are in micrometers (μm) and the type specimens were deposited to Department of Fish Disease,the Institute of Hydrobiology, Chinese Academy of sciences,Wuhan,China. 1. Mitrapora yiduensis sp.nov. (Fig.1) Host:Sinperca chuatsi (Basilewsky) Location:Kidney Locality:Town of Yidu,Hubei province.(30°31′N,111°E) Date:May 1982. Vegetative form:Trophozites are amoeba-shaped about 20.6(18.5-23.2)by 18.4(16.5-20.6)in size. Spore:Bell-shaped in both thecal and sutural view.Blunt circular at anterior end and a truncate posterior end.Sutural ridge is straight.There are six lines on surface extending from the anterior end to the posterior end of the spore.Two pyriform polar capsules are equal in size and sporoplasm have an indinopilous vacuole and two round germinal nuclei.Dimension of spores preserved in 4%Formalin:Length 8.1 (7.2-8.4),width 5.2 (4.8-5.5),thickness 5.9 (5.8-6.2);length of the polar capsules 3.0 (2.8-3.2),width 2.1 (2.0-2.2). This species is similar to Mitraspora coreosiniperca Xiao at feng,1997,but the latter have a larger spore than the former and the former is blunt at anterior end of the spore,while the latter is slightly sharp at anterior end. 2. Myxobolus tuenfengensis sp.nov. (Fig.2) Host:Saurogobio dabryi Bleeker Location:Gill Locality:Tuanfeng Town,Hubei province(30°20′N,111°5′E) Date:June 1984. Cyst:Round or elliptical shaped with 0.3-0.5mm in size. Spore:Ovoid or nearly ellipsoid in thecal view and spindle in sutural view.The anterior end is truncate and the posterior end is blunt.The sutural ridge is rough and straight with distinct intercapsular appendix.Two pyriform polar capsules are equal in size.Sporoplasm is even,with an iodinophililous vacuole and two round germinal nuclei.Dimensions of preserved (in 4%Formalin) spores:Length 12.8 (12-13.6),width 9.4 (8.4-10),thickness 6.6 (6.0-7.0);length of the polar capsules 4.5 (4.0-5.0),width 3.0 (2.9-3.2). This species is similar to Myxobolus mesentricus Kudo,1919 and Myxobolus haichengensis Chen,1998. But the spore of our new species is larger than the other two species and they also differ in the size and form of polar capsules.展开更多
The present paper reports two new species of Myxosporida in Squaliobarbus curriculus from Changjiang River and Hypseleotris swinhonis from Donghu Lake, Wuhan. The type specinens were deposited in the Laboratory of Fis...The present paper reports two new species of Myxosporida in Squaliobarbus curriculus from Changjiang River and Hypseleotris swinhonis from Donghu Lake, Wuhan. The type specinens were deposited in the Laboratory of Fish Diseases, Institute of Hydrobiology, The Chinese Academy of Seiences, Wuhan, China. 1. Podospora yiduensis sp. nov. (Fig. l) Host: Squaliobarbus curriculus (Richardson). Location: Gall bladder, Kidney. Locality: Yidu city, Hubei province. (30°31, N, 111°E) Date of collection: October 14, 1982. Vegetative form: Cyst and trophozoite not observed. Spore: Flat ovid in sutural view, nearly spherical in thecal view, sharp at anterior end, round at posterior end, sutural ridge straight and rough; shell valve smooth, cylinder lucid and membrane-like protrustions present on two lateral sides of posterior end. Two polar capsules situated at the anterior end of the spore, being equal in size and nearly spherical. Sporoplasm with an iodinophilous vacuole and two nuclei. Dimension of spore : spore 6.2(5.9-6.5)μm, width 7.7(7.6-7.8)μm, thickness 5.6(5.2-6)μm, diameter of polar capsules 2.3(2.2-2.4)μm. outgrowth 3 × 3.6μm. This new species is similar to Podospora plagiognathopis Chen et Hsich, 1984, but differs from the latter by being smaller in size, and having two cylinder lucid and membrane-like protrusions present on two lateral sides of posterior end. 2. Myxobolus chinensis sp. nov. (Fig.2) Host: Hypseleotris swinhonis (Gnther). Location: The muscle of pack, between head and chest.. Locality: Wuhan, Donghu Lake. (30° 31, N, 1 14°20, E) Dote of collection: August 7.1993. Cyst: Ellipsoild, white, size 0.5-0.3cm. Spore: Pyriform in front view, spindle in sutural view, spore shell smooth. Sutural ridge straight and sturdy, intercapsular process distinct, two long rod-like polar capsules equal in size, polar filament distince and coiled 12- 14 circles. Sporoplasm with an iodinophilous vacuole and two nuclei. Two ovoid or triangular polar capsules nuclei situated under the polar capsules, with 4 to 5 "V" shaped fold in the posterior, Dimentions of spores: length 14.l(14.2- 15)μm, width 8 (7.8-8.2) μm, thickness 6.5(6.4-6.6)μm, polar capsule 8.8(8.5-9.5)μm by 2.4(2.3-2.5)μm. This new species is similar to Myxobolus catlae Chakravarty 1943 but differs from the latter in size and shape of spores.展开更多
文摘A new species Myxobolus guanqiaoensis was found in the liver and abdominalcavity of Allogynogenetic silver prassian carp at Guanqiao, in Oct l996. The typespecimens were preserved in the Laboratory of Hsh ixseases, InshtUte of Hydrobiology,The Chinese Academy of Sciences, Wuhan, China.apcobolus guanqiaoensis sp. nov.Host and site: Allogynogenehc si1ver crucian carp (Carassius auratus gibelio l XCyPrinus carP io J), Liver and abdowhnal cavity.Locality: Guanqiao, Wuhan, China.Infechon ratet above 6o%.Cystt Oval or elliptic in fOrm, white in color; 2.l-4.Ocm in diametef, embracedby a tf8nsparent membrane.Sporest Spores elongatedsioval in thecal view. Pointed at anterior end and blunhyround in posterior end; l-3 V-shaPed folds at posterior end; elongated elliphc insutural view, sutUral line S-shaPed and dishnct shell valves smooth; intercaPsularaPPendix dishnct. Two polar capsules eggplant unequal in size, polar caPsule locatedat l / 2 position of spore length; 7-8pm flat coiled filamenLChmensions of 2o fresh spores f tength l9.6(l8.2-22.o)pm. width Io.8(9.O-l3.2)pm. thickness 8.3(8.O-9.o)Um, large po1ar capsules 9.5(8.8-lO.l) by 3.7(3.O-4.4)Um,small polar caPsules 8.4(7.9-9.8) by 3.6(3.2-4.O)Um. Polar caPsule nuclei sitUated atthe inner of tWo polar capsules. An indistinct iodinophilous vacuole and two roundgerminal nuclei.The shape of trhis new sPecies is similar to apcobolus gigi, M)Af)bolus kDi andapcobolus aureatus, but differs from them in dimensions of sPore, the size of POlarcapsule, suture line and host.
文摘Two new species of myxosporeans (Myxosporea:Bivalvulida),Mitrapora yiduensis sp.nov.and Myxobolus tuenfengensis sp.nov.,parasitic in freshwater fishes collected from the Yangtze River of China are described in this paper.All body organs of the host fishes,Siniperca chuatsi Basilewsky and Saurogobio dabrui Bleeker were examined and twenty spores of each myxosporean were measured with an eyepiece micrometer.All the measurement are in micrometers (μm) and the type specimens were deposited to Department of Fish Disease,the Institute of Hydrobiology, Chinese Academy of sciences,Wuhan,China. 1. Mitrapora yiduensis sp.nov. (Fig.1) Host:Sinperca chuatsi (Basilewsky) Location:Kidney Locality:Town of Yidu,Hubei province.(30°31′N,111°E) Date:May 1982. Vegetative form:Trophozites are amoeba-shaped about 20.6(18.5-23.2)by 18.4(16.5-20.6)in size. Spore:Bell-shaped in both thecal and sutural view.Blunt circular at anterior end and a truncate posterior end.Sutural ridge is straight.There are six lines on surface extending from the anterior end to the posterior end of the spore.Two pyriform polar capsules are equal in size and sporoplasm have an indinopilous vacuole and two round germinal nuclei.Dimension of spores preserved in 4%Formalin:Length 8.1 (7.2-8.4),width 5.2 (4.8-5.5),thickness 5.9 (5.8-6.2);length of the polar capsules 3.0 (2.8-3.2),width 2.1 (2.0-2.2). This species is similar to Mitraspora coreosiniperca Xiao at feng,1997,but the latter have a larger spore than the former and the former is blunt at anterior end of the spore,while the latter is slightly sharp at anterior end. 2. Myxobolus tuenfengensis sp.nov. (Fig.2) Host:Saurogobio dabryi Bleeker Location:Gill Locality:Tuanfeng Town,Hubei province(30°20′N,111°5′E) Date:June 1984. Cyst:Round or elliptical shaped with 0.3-0.5mm in size. Spore:Ovoid or nearly ellipsoid in thecal view and spindle in sutural view.The anterior end is truncate and the posterior end is blunt.The sutural ridge is rough and straight with distinct intercapsular appendix.Two pyriform polar capsules are equal in size.Sporoplasm is even,with an iodinophililous vacuole and two round germinal nuclei.Dimensions of preserved (in 4%Formalin) spores:Length 12.8 (12-13.6),width 9.4 (8.4-10),thickness 6.6 (6.0-7.0);length of the polar capsules 4.5 (4.0-5.0),width 3.0 (2.9-3.2). This species is similar to Myxobolus mesentricus Kudo,1919 and Myxobolus haichengensis Chen,1998. But the spore of our new species is larger than the other two species and they also differ in the size and form of polar capsules.
文摘The present paper reports two new species of Myxosporida in Squaliobarbus curriculus from Changjiang River and Hypseleotris swinhonis from Donghu Lake, Wuhan. The type specinens were deposited in the Laboratory of Fish Diseases, Institute of Hydrobiology, The Chinese Academy of Seiences, Wuhan, China. 1. Podospora yiduensis sp. nov. (Fig. l) Host: Squaliobarbus curriculus (Richardson). Location: Gall bladder, Kidney. Locality: Yidu city, Hubei province. (30°31, N, 111°E) Date of collection: October 14, 1982. Vegetative form: Cyst and trophozoite not observed. Spore: Flat ovid in sutural view, nearly spherical in thecal view, sharp at anterior end, round at posterior end, sutural ridge straight and rough; shell valve smooth, cylinder lucid and membrane-like protrustions present on two lateral sides of posterior end. Two polar capsules situated at the anterior end of the spore, being equal in size and nearly spherical. Sporoplasm with an iodinophilous vacuole and two nuclei. Dimension of spore : spore 6.2(5.9-6.5)μm, width 7.7(7.6-7.8)μm, thickness 5.6(5.2-6)μm, diameter of polar capsules 2.3(2.2-2.4)μm. outgrowth 3 × 3.6μm. This new species is similar to Podospora plagiognathopis Chen et Hsich, 1984, but differs from the latter by being smaller in size, and having two cylinder lucid and membrane-like protrusions present on two lateral sides of posterior end. 2. Myxobolus chinensis sp. nov. (Fig.2) Host: Hypseleotris swinhonis (Gnther). Location: The muscle of pack, between head and chest.. Locality: Wuhan, Donghu Lake. (30° 31, N, 1 14°20, E) Dote of collection: August 7.1993. Cyst: Ellipsoild, white, size 0.5-0.3cm. Spore: Pyriform in front view, spindle in sutural view, spore shell smooth. Sutural ridge straight and sturdy, intercapsular process distinct, two long rod-like polar capsules equal in size, polar filament distince and coiled 12- 14 circles. Sporoplasm with an iodinophilous vacuole and two nuclei. Two ovoid or triangular polar capsules nuclei situated under the polar capsules, with 4 to 5 "V" shaped fold in the posterior, Dimentions of spores: length 14.l(14.2- 15)μm, width 8 (7.8-8.2) μm, thickness 6.5(6.4-6.6)μm, polar capsule 8.8(8.5-9.5)μm by 2.4(2.3-2.5)μm. This new species is similar to Myxobolus catlae Chakravarty 1943 but differs from the latter in size and shape of spores.
