Comparative Parasitology 68(2) 2001 - Peru State College

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218 COMPARATIVE PARASITOLOGY, 68(2), JULY 2001 of the Neotropical Region. Academy of Sciences of the Czech Republic, Prague, Czech Republic. 464 pp. , R. Aguilar-Aguilar, and G. Salgado-Maldonado. 2001. Systematic status of Capillaria patzcuarensis Osorio-Sarabia, Perez-Ponce de Leon et Salgado-Maldonado, 1986 (Nematoda: Capillariidae) from freshwater fishes in Mexico. Acta Parasitologica 46:8-11. -, G. Salgado-Maldonado, and D. Osorio-Sarabia. 2000. Records of the bird capillariid, Ornithocapillaria appendiculata (Freitas, 1933) comb, n., from freshwater fishes in Mexico, with remarks on Capillaria patzcuarensis Osorio-Sarabia, Perez-Ponce de Leon and Salgado-Maldonado, 1986. Systematic Parasitology 45:53-59. Osorio-Sarabia, D., G. Perez, and G. Salgado-Maldonado. 1986. Helmintos de peces del lago de Patzcuaro, Michoacan, I. Helmintos de Chirostoma estorel "pescado bianco." Taxonomfa. Anales del Instituto de Biologfa, Universidad Nacional Autonoma de Mexico, Serie Zoologfa 57:61-92. Peresbarbosa-Rojas, R. E., G. Perez, and L. Garcia. 1994. Helmintos parasites de tres especies de peces (Goodeidae) del lago de Patzcuaro, Michoacan. Anales del Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Serie Zoologfa 65:201-204. Perez-Ponce de Leon, G., B. Mendoza G., and G. Pulido F. 1994. Helminths of the charal prieto Chirostoma atteniiatum (Osteichthes: Atherinidae), from Patzcuaro Lake, Michoacan, Mexico. Journal of the Helminthological Society of Washington 61:139-141. Pineda-Lopez, R., and C. Gonzalez. 1997. Bothriocephalus acheilognathr. presencia e importancia de un invasor asiatico infectando peces de Queretaro. Zoologfa Informa 35:5-12. Salgado-Maldonado, G., G. Cabanas-Carranza, J. M. Caspeta-Mandujano, E. Soto-Galera, E. Mayen-Pena, D. Brailovsky, and R. Baez-Vale. 2001. Helminth parasites of freshwater fishes of the Balsas River drainage, southwestern Mexico. Comparative Parasitology 68:196-203. , S. Guillen-Hernandez, and D. Osorio-Sarabia. 1986. Presencia de Bothriocephalus acheilognathi Yamaguti, 1934 (Cestoda: Bothriocephalidae) en peces de Patzcuaro, Michoacan, Mexico. Anales del Instituto de Biologfa, Universidad Nacional Autonoma de Mexico, Serie Zoologfa 57: 213-218. Copyright © 2011, The Helminthological Society of Washington , and C. R. Kennedy. 1997. Richness and similarity of helminth communities in the tropical cichlid fish Cichlasoma iirophthalmus from the Yucatan Peninsula, Mexico. Parasitology 1 14: 581-590. , and D. Osorio-Sarabia. 1987. Helmintos de algunos peces del lago de Patzcuaro. Ciencia y Desarrollo 113:41-57. -, R. Pineda-Lopez, V. M. Vidal-Martinez, and C. R. Kennedy. 1997. A checklist of mctazoan parasites of cichlid fish from Mexico. Journal of the Helminthological Society of Washington 64:195-207. Sanchez-Alvarez, A., L. Garcia-Prieto, and G. Perez. 1998. A new species of Rhahdochona Railliet, 1916 (Nematoda: Rhabdochonidae) from endemic goodeids (Cyprinodontiformes) from two Mexican lakes. Journal of Parasitology 84:840- 845. Scholz, T., and G. Salgado-Maldonado. 2000. The introduction and dispersal of Centrocestus forinosanus (Nishigori, 1924) (Digenea: Heterophyidae) in Mexico: a review. American Midland Naturalist 143:185-200. , and . 2001. Metacestodes of the family Dilepididae (Cestoda: Cyclophyllidea) parasitizing fishes in Mexico. Systematic Parasitology 49:23-39. , and J. Vargas-Vazquez. 1998. Trematodes from fishes of the Rio Hondo River and freshwater lakes of Quintana Roo, Mexico. Journal of the Helminthological Society of Washington 65:91- 95. -, F. Moravec, C. Vivas-Rodriguez, and E. Mendoza-Franco. 1995. Metacercariae of trematodes of fishes from cenotes ( = sinkholes) of the Yucatan Peninsula, Mexico. Folia Parasitologica 42:173-192. Soto-Galera, E., E. Diaz-Pardo, E. Lopez-Lopez, and J. Lyons. 1998. Fish as indicators of environmental quality in the Rio Lerma Basin, Mexico. Aquatic Ecosystem Health and Management 1:267-216. Vidal-Martinez, V. M., and C. R. Kennedy. 2000. Zoogeographical determinants of the helminth fauna composition of Neotropical cichlid fish. Pages 250-278 in G. Salgado-Maldonado, A. N. Garcfa-Aldrete, and V. M. Vidal-Martfnez, eds. Metazoan Parasites in the Neotropics: A Systematic and Ecological Perspective. Instituto de Biologfa, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico.
Comp. Parasitol. 68(2), 2001, pp. 219-227 Singhiatrema vietnamensis sp. n. (Digenea: Ommatobrephidae) and Szidatia taiwanensis (Fischthal and Kimtz, 1975) comb. n. (Digenea: Cyathocotylidae) from Colubrid Snakes in Vietnam STEPHEN S. CURRAN,' ROBIN M. OVERSTREET,U DANG TAT THE,2 AND NGUYEN THI LE2 1 The University of Southern Mississippi, Gulf Coast Research Laboratory, P.O. Box 7000, Ocean Springs, Mississippi 39566, U.S.A. (e-mail: robin.overstreet@usm.edu and stephen.curran@usm.edu) and 2 Institute of Ecology and Biological Resources, Nghia do, Cau Giay, Hanoi, Vietnam (ntminh@ncst.ac.vn) ABSTRACT: A new digenean is described and a second species is redescribed from the colubrid rear-fanged water snakes Enhydris chinensls (Gray) and Enhydris phunbea (Boie) captured from several regions in Vietnam during 1996-1998. Singhiatrema vietnamensis sp. n. (Ommatobrephidae) from the small intestine of both snakes is characterized by the extent of the ceca, the position of the vitellaria, the size of the eggs, and the host. Szidatia taiwanensis (Fischthal and Kuntz, 1975) comb. n. (Cyathocotylidae) is redescribed from the holotype and specimens from the gallbladder of both snakes. The species is transferred from the genus Mesostephanoides primarily because it does not have a large cirrus that is spined; it is characterized by the shape of the seminal vesicle, length of the ceca, body size relative to the forebody, number of testes in hindbody, egg size, size of tribocytic organ, and the infection site in the host. Concerning the classification of Singhiatrema Simha within Echinostomatiformes, we consider Singhiatrematinae Simha a junior synonym of Ommatobrephinae Poche. We discuss the classification of Gogatea Lutz and Szidatia Dubois and consider Gogatinae Mehra a junior synonym of Szidatiinae Dubois. The use of different fixation methods can produce artifacts characteristic at the generic level. KEY WORDS: Singhiatrema vietnamensis sp. n., Ommatobrephidae, Szidatia taiwanensis comb, n., Cyathocotylidae, fixation artifacts, Enhydris chinensis, Enhydris plumbea, Colubridae, snakes, Vietnam. Two unrelated digeneans, a new intestinal ommatobrephid and a gallbladder cyathocotylid, each infecting 2 species of rear-fanged colubrid water snakes (Enhydris chinensis (Gray, 1842) and Enhydris plumbea (Boie, 1827)) from Vietnam, are herein described. The life history of neither parasite is known. The new ommatobrephid is most similar to species of Singhiatrema Simha, 1954, which are usually found in the intestines of water snakes. Exceptions include Singhiatrema najai Chattopadhyaya, 1967, from the intestine of the Indian cobra Naja naja (Linnaeus, 1758), and Singhiatrema lali Chakrabarti, 1967, from the intestine of a freshwater emydid turtle (Hardella thurgii (Gray, 1831)) (Chattopadhyaya, 1967). All prior known species are reported from the Indian subcontinent only. The gallbladder cyathocotylid that we found in Vietnam also occurs in one of the same hosts in Taiwan. It exhibits a relationship with Szidatia joyeuxi (Hughes, 1929), which infects the intestine of the colubrid water snake Matrix maura (Linnaeus, 1758) (as Tropidonotus viperinus (Sonnini and Latreille, 1802)) in an oasis in Tunis, Morocco, and has a cercaria that is shed from the freshwater snail Melanopsis sp. and de- Corresponding author. 219 velops in the leg muscles of the frog Rana rudibunda Pallas, 1771 (as Rana esculenta rudibunda; see Langeron, 1924; Hughes, 1929; Dubois, 1938). Materials and Methods The second and third authors captured a total of 43 specimens of E. chinensis and 51 specimens of E. plumbea in Ha Noi, Nam Ha, Thai Binh, Na Nam, Nam Dinh, Hai Duong, and Hai Phong provinces (Red River Delta) in Vietnam. They collected digeneans live from the intestines and gallbladders of both snakes from all the provinces. For the first collections, they relaxed the specimens in distilled water, then placed them in physiological saline, and finally fixed them in a cold 5% formalin solution. However, specimens collected later were used for the descriptions. These were placed directly into saline, then fixed with near boiling water without coverslip pressure, and finally pipetted into 5% formalin. Additional unmeasured specimens were fixed under pressure for examination of specific features. Whole mounts of worms were prepared by staining specimens with either carmine or Van Cleave's hematoxylin with additional Ehrlich's hematoxylin. These were dehydrated, cleared with clove oil, and mounted on slides with Canada balsam. Measurements are given for the holotype, followed in parentheses by the range of measurements of each feature derived from specimens heat-fixed without pressure. Measurements are given in micrometers unless otherwise stated. Specimens were deposited in the United States National Parasite Collection (USNPC), Belts- Copyright © 2011, The Helminthological Society of Washington
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Volume 68 July 2001 Number 2 Former
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Comp. Parasitol. 68(2), 2001, pp. 1
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CRISCIONE AND FONT—DEVELOPMENT OF
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length did not exceed 1.2 mm. By da
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Agamidae) from Australia. Journal o
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infection with O. javaensis (C. D.
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CRISCIONE AND FONT—VARIATION OF O
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CRISCIONE AND FONT—VARIATION OF O
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and Font, 2001), the indication of
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U.S.A. (42°59'N; 88°21'W). Ten to
Page 21 and 22: Table 2. Prevalence (Pr) and Rana c
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Page 29 and 30: filariae of S. fallisensis was simi
Page 33 and 34: CARRENO ET AL.—DEER PARASITES IN
Page 35 and 36: ange of host species, but most coll
Page 37 and 38: Oestridae). Canadian Journal of Zoo
Page 41 and 42: JOY AND TUCKER—SALAMANDER PARASIT
Page 43 and 44: south-central New York salamanders.
Page 45 and 46: AGUIRRE-MACEDO ET AL.—ENDOHELMINT
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Page 53 and 54: •o d c o U rH CB 3 C8 H °Q 0 W T
Page 55 and 56: da-Lopez et al., 1985; Leon, 1992;
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Page 59 and 60: JALISCO SALGADO-MALDONADO ET AL.—
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Page 63 and 64: Table 3. Continued. Number of hosts
Page 71: tudio helmintologico de Chirostoma
Page 75 and 76: CURRAN ET AL.—TWO VIETNAMESE SNAK
Page 77 and 78: methods of fixation had not been kn
Page 79 and 80: tion) but were in independent later
Page 81 and 82: tylidae Poche: Part 2. A contributi
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Page 89 and 90: Literature Cited Baker, M. R. 1978.
Page 91 and 92: Figure 1. Spores of Myxobolus gibbo
Page 93 and 94: CONE—DIAGNOSIS OF MYXOBOLUS 239 F
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Page 111 and 112: RESEARCH NOTES 257 Table 1. Mean wo
Page 113 and 114: , D. Iglesias, and B. Fried. 1986.
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Page 117 and 118: RESEARCH NOTES 263 Table 1. Helmint
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Kharchenko, V. A., G. M. Dvojnos, a
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id s „ ~ 55 **5 | «§ u ' *^ U
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(Nematoda). Except for H. tursionis
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RESEARCH NOTES 275 Figure 1. Cephal
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c Tj ;^ fn in ON o m ON "3 s ON gcd
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ticeps (Rudolphi, 1819), which also
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Nieto reviewed recent advances in t
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Adenomera hylaedactyla, 21 Algansea
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Honorary Membership, 282 Life Membe
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Schrankiana larvata, 21 Schrankiana
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*Edna M. Buhrer "Mildred A. Doss *
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