记录采自天津和广东的淡水白鲳(Piaractus brachypomum)鳃上的1种单殖吸虫——航海柄囊虫Mymarotheciumviatorum Boeger W A,Piasecki W&Sobecda E 2002。所获标本与Boeger等2002年的原始描述基本一致,但在量度上存在差异。柄囊虫属...记录采自天津和广东的淡水白鲳(Piaractus brachypomum)鳃上的1种单殖吸虫——航海柄囊虫Mymarotheciumviatorum Boeger W A,Piasecki W&Sobecda E 2002。所获标本与Boeger等2002年的原始描述基本一致,但在量度上存在差异。柄囊虫属Mymarothecium和航海柄囊虫均为我国首次报道的单殖吸虫属种。展开更多
The present paper deals with three new species in the genus Gyrodactylus found on freshwater fishes from Wuling Mountain Region. All the measurements are in mm. Type specimens are deposited in the Laboratory of Fish D...The present paper deals with three new species in the genus Gyrodactylus found on freshwater fishes from Wuling Mountain Region. All the measurements are in mm. Type specimens are deposited in the Laboratory of Fish Disease, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan. 1. Gyrodactylus parabotia sp. nov. (Fig.1) Body small size, being 0.233-0.235 long and 0.045-0.05 in width. Marginal hooklets are of ordinary type; total length 0.025 -0.027, handle 0.02-0.022, point 0.005. Total length of anchors 0.051 -0.062; the basal portion 0.02, handle length 0.043-0.045, point about 0.027-0.037. Ventral bar 0.023-0.05, marginal hooklets 0.008-0.01. Dorsal bar 0.002×0.019-0.022. Cirrus armed with a row of four triangular spines and a large cuticular spine. Location, host and localities: gill of Parabotia fasciata Dabry; Cili, Hunan Province (29.42°N, 111.02°E). Description is based on 10 specimens. The new species is similar to G.latus Bychowsky, 1933 in the structure of opisthohaptor, but differs in the size and chitinod structure. 2. Gyrodactylus lichuanensis sp. nov. (Fig.2) Body small size, being 0.19 long and 0.025 in width. Marginal hooklets are of ordinary type; total length 0.027, handle 0.023 , point 0.003. Total length of anchors 0.054-0.065; the basal portion 0.017 -0.019, handle length 0.036-0.037, point about 0.024. Ventral bar 0.012-0.015, marginal hooklets 0.006-0.009. Dorsal bar 0.0158-0.0265 ×0.001. Cirrus bulb has not been observed. Location, host and localities: skin of Phoxinus lagowskii variegatus (Gunth); Lichuan, Hubei Province (30.29°N, 109.0°E). Description is based on 5 specimens. The worm closely resembles G.oxycephali Achmerow, 1952 with reference to the anchor, but differs from the latter by the characteristics of the ventral bar, which is "一" shaped, while the ventral bar of the latter is small intestine shaped. 3. Gyrodactylus hunanensis sp. nov.(Fig.3) Body small size, being 0.14-0.218 long and 0.035-0.053 in width. Marginal hooklets are of ordinary type; total length 0.022-0.025, handle 0.018-0.02, point 0.004-0.005. Total length of anchors 0.048-0.05; the basal portion 0.02-0.022, handle length 0.035-0.038, point about 0.018-0.02. Ventral bar 0.023-0.026, marginal hooklets 0.005-0.007. Dorsal bar 0.002-0.003× 0.013 -0.19. Cirrus armed with a row of 6 short spines. Location, host and localities: gill of Erythroculter ilishaeformis (Bleeker); Yunshuen County, Hunan Province (29.0°N, 109.8°E). Description is based on 8 specimens. The new species is similar to G. honghuensis Zhang et Ji, 1978 in the structure of opisthohaptor, but differing in the structure and size of ventral bar and cirrus.展开更多
文摘记录采自天津和广东的淡水白鲳(Piaractus brachypomum)鳃上的1种单殖吸虫——航海柄囊虫Mymarotheciumviatorum Boeger W A,Piasecki W&Sobecda E 2002。所获标本与Boeger等2002年的原始描述基本一致,但在量度上存在差异。柄囊虫属Mymarothecium和航海柄囊虫均为我国首次报道的单殖吸虫属种。
文摘The present paper deals with three new species in the genus Gyrodactylus found on freshwater fishes from Wuling Mountain Region. All the measurements are in mm. Type specimens are deposited in the Laboratory of Fish Disease, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan. 1. Gyrodactylus parabotia sp. nov. (Fig.1) Body small size, being 0.233-0.235 long and 0.045-0.05 in width. Marginal hooklets are of ordinary type; total length 0.025 -0.027, handle 0.02-0.022, point 0.005. Total length of anchors 0.051 -0.062; the basal portion 0.02, handle length 0.043-0.045, point about 0.027-0.037. Ventral bar 0.023-0.05, marginal hooklets 0.008-0.01. Dorsal bar 0.002×0.019-0.022. Cirrus armed with a row of four triangular spines and a large cuticular spine. Location, host and localities: gill of Parabotia fasciata Dabry; Cili, Hunan Province (29.42°N, 111.02°E). Description is based on 10 specimens. The new species is similar to G.latus Bychowsky, 1933 in the structure of opisthohaptor, but differs in the size and chitinod structure. 2. Gyrodactylus lichuanensis sp. nov. (Fig.2) Body small size, being 0.19 long and 0.025 in width. Marginal hooklets are of ordinary type; total length 0.027, handle 0.023 , point 0.003. Total length of anchors 0.054-0.065; the basal portion 0.017 -0.019, handle length 0.036-0.037, point about 0.024. Ventral bar 0.012-0.015, marginal hooklets 0.006-0.009. Dorsal bar 0.0158-0.0265 ×0.001. Cirrus bulb has not been observed. Location, host and localities: skin of Phoxinus lagowskii variegatus (Gunth); Lichuan, Hubei Province (30.29°N, 109.0°E). Description is based on 5 specimens. The worm closely resembles G.oxycephali Achmerow, 1952 with reference to the anchor, but differs from the latter by the characteristics of the ventral bar, which is "一" shaped, while the ventral bar of the latter is small intestine shaped. 3. Gyrodactylus hunanensis sp. nov.(Fig.3) Body small size, being 0.14-0.218 long and 0.035-0.053 in width. Marginal hooklets are of ordinary type; total length 0.022-0.025, handle 0.018-0.02, point 0.004-0.005. Total length of anchors 0.048-0.05; the basal portion 0.02-0.022, handle length 0.035-0.038, point about 0.018-0.02. Ventral bar 0.023-0.026, marginal hooklets 0.005-0.007. Dorsal bar 0.002-0.003× 0.013 -0.19. Cirrus armed with a row of 6 short spines. Location, host and localities: gill of Erythroculter ilishaeformis (Bleeker); Yunshuen County, Hunan Province (29.0°N, 109.8°E). Description is based on 8 specimens. The new species is similar to G. honghuensis Zhang et Ji, 1978 in the structure of opisthohaptor, but differing in the structure and size of ventral bar and cirrus.
