Ascocotyle (Phagicola) rara sp. n. (Digenea, Heterophyidae) from Ixobrychus exilis (Aves, Ardeidae) in Brazil

Arruda, Vanessa Santos de; Muniz-Pereira, Luís C.; Pinto, Roberto Magalhães

doi:10.1590/S0101-81752002000100012

Abstract

Ascocotyle (Phagicola) rara sp. n. is described from the intestine of Ixobiyclius exilis (Gmelin, 1789), a Brazilian bittern. The new species is compared with Ascocotyle (Phagicola) angeloi Travassos, 1928 and Ascocotyle (Phagicola) moUieiiisicola (Sogandares-Bernal & Bridgman, 1960); the main distinguishing characters are related to the aspect of the gonotyl that is not perforated in A. (P.) rara sp. n. when compared to A. (P.) mollienisicola and the absence of the crown of spines at the anteriorend in the new species compared withA. (P.) angeloi. This is an important finding, since human infections by Phagicola spp. have been previously reported in Brazil.

Digenea; Ascocotyle (Phagicola) rara sp.n.; Ixobrychus exilis; birds; Brazil

Ascocotyle (Phagicola) rara sp. n. (Digenea, Heterophyidae) from Ixobrychus exilis (Aves, Ardeidae) in Brazil

Vanessa Santos de Arruda^I; Luís C. Muniz-Pereira^I,II; Roberto Magalhães Pinto^I,III

^ILaboratório de Helmintos Parasitos de Vertebrados, Departamento de Helmintologia, Instituto Oswaldo Cruz. Avenida Brasil 4365, 21045-900 Rio de Janeiro, Rio de Janeiro, Brasil

^IICorresponding author. E-mail: lmuniz@ioc.fiocruz.br

^IIIResearch Fellow CNPq

ABSTRACT

Ascocotyle (Phagicola) rara sp. n. is described from the intestine of Ixobiyclius exilis (Gmelin, 1789), a Brazilian bittern. The new species is compared with Ascocotyle (Phagicola) angeloi Travassos, 1928 and Ascocotyle (Phagicola) moUieiiisicola (Sogandares-Bernal & Bridgman, 1960); the main distinguishing characters are related to the aspect of the gonotyl that is not perforated in A. (P.) rara sp. n. when compared to A. (P.) mollienisicola and the absence of the crown of spines at the anteriorend in the new species compared withA. (P.) angeloi. This is an important finding, since human infections by Phagicola spp. have been previously reported in Brazil.

Key words: Digenea, Ascocotyle (Phagicola) rara sp.n., Ixobrychus exilis, birds, Brazil

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ACKNOWLEDGEMENTS. To Dr Dante M Teixeira, head of the Ornithological Section, Museu Nacional do Rio de Janeiro (UFRJ) and to Prof. Jorge Bruno Nacinovic, Ornithological Section Museu Nacional do Rio de Janeiro (UFRJ), for reviewing the host nomenclature and discussing host taxonomic status; to Prof. Dely Noronha, FIOCRUZ Dept. of Helminthology (CHIOC), for providing the deposited helminth specimens.

Recebido em 29.VI.2001; aceito em 14.II.2002.

Burton, P.R. 1958. A review ofthe taxonomy of the trematode genera Ascocotyle (Looss) and Phagicola (Faust) of the family Heterophyidae. Proc. Helm. Soc. Wash. 25: 117-122.
Chieffi, P.P.; C.O.M. Gorla; D.M.A.G.V. Torres; R.M.D.S. Dias; A.C.S. Mangini; A.V. Monteiro & E. Woiciechovshi. 1992. Human infection by Phagicola sp. (Trematoda, Heterophyidae) in the municipality of Registro, São Paulo State, Brazil. Jour. Trop. Med. Hyg. 95: 346-348.
Font, W.F.; R.M. Overstreet & R.W. Heard. 1984. Taxonomy and biology of Phagicola nana (Digenea: Heterophyidae). Trans. Amer. Microse. Soc. 103: 408-422.
Ostrowski de Núnez, M. 1993. Life-history studies of heterophyid trematodes in the neotropical region: Ascocotyle (Phagicola) diminuta (Stunkard & Haviland, 1924) and A. (P.) angrense Travassos, 1916. Syst. Parasitl. 24: 191-199.
______. 1998. Life cycle of Ascocotyle (Phagicola) angeloi (Digenea: Heterophyidae) in the neotropical region. Folia Parasitol. 45: 199-204.
Pearson, J.C. 1964. A revision ofthe subfamily Haplorchinae Looss, 1899 (Trematoda: Heterophyidae). Parasitology 54: 601-676.
Salgado-Maldonado, G. & L. Aguirre-Macedo. 1991. Metacercarias parásitas de Cichlasoma urophthalimts (Cichilidae) Pelaezia loossi n. comb. y Phagicola angrense com descripción de adultos recuperados experimentalmente. Anales Inst. Biol. Univ. Nac. Auton. Mexico 62: 391-407.
Scholz, T.; J. Vargas-Vázquez; L. Aguirre-Macedo & V.M. Vidal-Martínez. 1997. Species of Ascocotyle Looss, 1899 (Digenea: Heterophyidae) of the Yucatan Peninsula, Mexico, and notes on their life-cycles. Syst. Parasitol. 36: 161-181.
Sogandares-Bernal, F. & J.F. Bridgman. 1960. Three Ascocotyle complex trematodes (Heterophyidae) encysted in fishes from Louisiana, including the description of a new genus. Tulane Stud. Zool. 8: 31-39.
Sogandares-Bernal, F. & R.D. Lumsden. 1963. The generic status of the heterophyid trematodes of the Ascocotyle complex, including notes on the systematics and biology of Ascocotyle angrense Travassos, 1916. Jour. Parasitol. 49: 264-274.
Travassos, L. 1916. Informações sobre a fauna helmintolójica Sul-fluminense. Brazil Médico 30 (1): 1-2.
______. 1928. Deux novelles espéces du genre Ascocotyle Looss, 1899. C.R. Soc. Biol. Paris 100: 939-940.
______. 1929. Contribuição ao conhecimento dos Heterophyidae. Rio de Janeiro. Thesis Escola Superior de Agricultura e Medicina Veterinária, 31 p.
Yamaguti, S. 1971. Synopsis of Digenetic Trematodes of Vertebrates. Keigaku Publ. Co., Tokyo, Vol. I, 1074p.

Publication Dates

Publication in this collection
19 May 2009
Date of issue
Mar 2002

History

Accepted
14 Feb 2002
Received
29 June 2001

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] Burton, P.R. 1958. A review ofthe taxonomy of the trematode genera Ascocotyle (Looss) and Phagicola (Faust) of the family Heterophyidae. Proc. Helm. Soc. Wash. 25: 117-122.

[2] Chieffi, P.P.; C.O.M. Gorla; D.M.A.G.V. Torres; R.M.D.S. Dias; A.C.S. Mangini; A.V. Monteiro & E. Woiciechovshi. 1992. Human infection by Phagicola sp. (Trematoda, Heterophyidae) in the municipality of Registro, São Paulo State, Brazil. Jour. Trop. Med. Hyg. 95: 346-348.

[3] Font, W.F.; R.M. Overstreet & R.W. Heard. 1984. Taxonomy and biology of Phagicola nana (Digenea: Heterophyidae). Trans. Amer. Microse. Soc. 103: 408-422.

[4] Ostrowski de Núnez, M. 1993. Life-history studies of heterophyid trematodes in the neotropical region: Ascocotyle (Phagicola) diminuta (Stunkard & Haviland, 1924) and A. (P.) angrense Travassos, 1916. Syst. Parasitl. 24: 191-199.

[5] ______. 1998. Life cycle of Ascocotyle (Phagicola) angeloi (Digenea: Heterophyidae) in the neotropical region. Folia Parasitol. 45: 199-204.

[6] Pearson, J.C. 1964. A revision ofthe subfamily Haplorchinae Looss, 1899 (Trematoda: Heterophyidae). Parasitology 54: 601-676.

[7] Salgado-Maldonado, G. & L. Aguirre-Macedo. 1991. Metacercarias parásitas de Cichlasoma urophthalimts (Cichilidae) Pelaezia loossi n. comb. y Phagicola angrense com descripción de adultos recuperados experimentalmente. Anales Inst. Biol. Univ. Nac. Auton. Mexico 62: 391-407.

[8] Scholz, T.; J. Vargas-Vázquez; L. Aguirre-Macedo & V.M. Vidal-Martínez. 1997. Species of Ascocotyle Looss, 1899 (Digenea: Heterophyidae) of the Yucatan Peninsula, Mexico, and notes on their life-cycles. Syst. Parasitol. 36: 161-181.

[9] Sogandares-Bernal, F. & J.F. Bridgman. 1960. Three Ascocotyle complex trematodes (Heterophyidae) encysted in fishes from Louisiana, including the description of a new genus. Tulane Stud. Zool. 8: 31-39.

[10] Sogandares-Bernal, F. & R.D. Lumsden. 1963. The generic status of the heterophyid trematodes of the Ascocotyle complex, including notes on the systematics and biology of Ascocotyle angrense Travassos, 1916. Jour. Parasitol. 49: 264-274.

[11] Travassos, L. 1916. Informações sobre a fauna helmintolójica Sul-fluminense. Brazil Médico 30 (1): 1-2.

[12] ______. 1928. Deux novelles espéces du genre Ascocotyle Looss, 1899. C.R. Soc. Biol. Paris 100: 939-940.

[13] ______. 1929. Contribuição ao conhecimento dos Heterophyidae. Rio de Janeiro. Thesis Escola Superior de Agricultura e Medicina Veterinária, 31 p.

[14] Yamaguti, S. 1971. Synopsis of Digenetic Trematodes of Vertebrates. Keigaku Publ. Co., Tokyo, Vol. I, 1074p.