Anna Kohn

Anna Kohn
Fundação Oswaldo Cruz | FIOCRUZ · Departamento de Helmintologia (IOC)

About

111
Publications
12,013
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,712
Citations
Citations since 2016
0 Research Items
582 Citations
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120

Publications

Publications (111)
Article
Full-text available
The pathological and histopathological alterations associated with parasitic infection induced by the didymozoid Pozdnyakovia gibsoni Justo and Kohn, 2012, in the stomach wall of the skipjack tuna Katsuwonus pelamis (Linnaeus, 1758) in the southwestern Atlantic Ocean off South America are presented. The parasites were encysted in the mucosal layer...
Book
Full-text available
This catalog lists species and figures of Monogenoidea parasites of fishes, amphibians and reptiles from South America. Six hundred and fifty one monogenoidean species have been recorded: 437 species from Brazil, 115 from Peru, 75 from Argentina, 44 from Venezuela, 40 from Chile, 23 from Falkland-Patagonian region, 17 from Colombia and 17 from Urug...
Article
Full-text available
Pathological alterations and autoecology of Didymocylindrus simplex in Katsuwonus pelamis (Linnaeus, 1758) in the Southwestern Atlantic Ocean off of South America are presented. This is the first record of the species in the region; the specimens are described. The pathologic changes observed most often were infiltration of lymphocytes and slight f...
Article
Full-text available
A new genus and species of didymozoid digenean is described from the skipjack tuna Katsuwonus pelamis (Linnaeus) in the Southwest Atlantic Ocean off Brazil. Pozdnyakovia gibsoni n. g., n. sp. is placed in the Gonapodasmiinae Ishii, 1935. The new genus differs from other genera in the morphology of the posterior regions of the fused pair; this consi...
Article
Full-text available
During a long-term study of the parasites of fishes from the Parana River, both below and above the reservoir of the Itaipu Hydroelectric Power Station, State of Parana, Brazil, specimens of 10 species of Dactylogyridae (9 new and one previously known) were collected from the gills of Salminus brasiliensis. The following species are described and i...
Article
Full-text available
This study presents results from several expeditions in 1985, 1991-1995 and 2003 to the Medium Paraná River in the section that begins below the Itaipu Dam and ends at the trinational border of Brazil, Argentina and Paraguay, in the lotic and lentic zones of the reservoir of the Hydroelectric Power Station of "Itaipu Binacional" (localities Foz do...
Article
Parspina papernai n. sp. is described from the intestine of Iheringichthys labrosus from the reservoir of the Itaipu Binational Hydroelectric Power Station, State of Paraná, Brazil. The new species is characterized by and easily distinguished from the other 2 species in the genus by having the distribution of vitellaria restricted to the hindbody,...
Article
Full-text available
A new species of Choricotyle parasitizing the marine fish Ctenosciaena gracilicirrhus (Teleostei: Sciaenidae) from Angra dos Reis, Rio de Janeiro, Brazil (23°00′24″S; 44°19′05″W) is proposed. Choricotyle rohdei n.sp. differs from all other species of the genus mainly by the number of genital spines, which varies from 28 to 30, whereas others presen...
Article
Full-text available
Two species of Didymozoidae originally described from Pacific Ocean, Wedlia retrorbitalis and Wedliasubmaxillaris are reported for the first time in South America, Atlantic Ocean. W. retrorbitalis was found encysted inretrorbital adipose tissue and W. submaxillaris in the maxillary region of Thunnus obesus caught along the Rio de Janeirocoastline,...
Article
Full-text available
The nematode Philometra katsuwoni Petter & Baudin-Laurencin, 1986, a gonad-infecting parasite of Katsuwonus pelamis (Linneaus 1758), originally described from the Gulf of Guinea, is reported for the first time from the coastal zone of Rio de Janeiro State, Brazil. As compared with the original description, the males of the Brazilian material are ge...
Article
Full-text available
Material collected from the fishes from the dams and fish farms of the Departamento Nacional de Obras contra asSecas (DNOCS) and from the tanks of the Itaipu Hydroelectric Station was examined in order to analyze the index andthe infestation of Monogenea. Specimens of tambaqui (Colossoma macropomum), pacu (Piaractus mesopotamicus),pirapitinga (Piar...
Article
The study of different species of tunas has revealed high numbers of cysts of Koellikerioides internogastricus Yamaguti, 1970, parasitizing Thunnus atlanticus (Lesson), Thunnus albacares (Bonnaterre) and Thunnus obesus (Lowe), caught along the Rio de Janeiro coastline, Atlantic Ocean, Brazil. This parasite was isolated from mucosa and submucosa of...
Article
A list of 135 monogenean species is presented updating the papers published by Kohn & Cohen (1989) and Kohn & Paiva (2000), increasing to 658 the number of known species in South America. After 1997, 104 monogeneans had been described as new species: 65 from Brazil, 13 from Argentina, 10 from Venezuela, 04 from Chile, two from Guyana, one from Fren...
Article
Full-text available
Eight known species of Demidospermus (Dactylogyridae, Monogenea) were collected from siluriform fishes from reservoir of the Itaipu Hydroelectric Power Station, Paraná, Brazil. Four of them are recorded for the first time in Brazil, enlarging their geographical distribution: Demidospermus armostus, Demidospermus anus, Demidospermus bidiverticulatum...
Article
Full-text available
2 Research fellow of Conselho Nacional de Desenvolvimento Científi co e Tecnológico - CNPq. *Correspondent: scohen@ioc.fi ocruz.br Abstract. During parasitological studies on different localities along the Paraná River, State of Paraná, Brazil, a new species of Notozothecium (Dactylogyridae) was found parasitizing gills of the freshwater fi sh Rhap...
Article
Full-text available
Didymocystis lamotheargumedoi n. sp. is described from the operculum and palate of Thunnus atlanticus (Lesson, 1831), palate of Thunnus albacares (Bonnaterre, 1788), and the operculum of Katsuwonus pelamis (Linnaeus, 1758) caught on the coast of Rio de Janeiro, Brazil. The new species is most similar to D. alalongae (Yamaguti, 1938), D. exiguus (Ya...
Article
Full-text available
Two species of Didymozoidae, Didymosulcus palati (Yamaguti 1970) and Didymosulcus philobranchiarca (Yamaguti 1970) were reported for the first time in South America, Atlantic Ocean, parasitizing three different tuna species from the coast of Rio de Janeiro, Brazil: Thunnus atlanticus (Lesson), Thunnus albacares (Bonnaterre) and Thunnus obesus (Lowe...
Article
Cohen, Simone C., Kohn, Anna (2008): South American Monogenea—list of species, hosts and geographical distribution from 1997 to 2008. Zootaxa 1924: 1-42
Article
Full-text available
Two hundred and ten species from Mexico, 155 from the Caribbean (Bahamas, Bermuda, Cuba, the Dominican Republic, Guadeloupe, Jamaica, Puerto Rico and Trinidad) and 63 from Central America (Costa Rica, El Salvador, Guatemala, Nicaragua and Panama) with hosts and geographical distribution are listed in this contribution, bringing up to date the knowl...
Article
Rhipidocotyle jeffersoni (Kohn, 1970) Overstreet & Curran, 2002 is redescribed, based on the holotype and on additional specimens from the intestine of the type-host Salminus brasiliensis (= S. maxillosus) (Characidae), collected at different dates and from several localities of the Paraná River and the hydroelectric power station reservoir of Itai...
Article
Full-text available
Nematodes (1 male and numerous females) of the Philometridae were collected from the mesentery of 2 species of pimelodid catfishes, Calophysus macropterus and Perrunichthys perruno, from the Amazon River basin (fishmarket in Iquitos, Loreto District) in Peru. A detailed study of their morphology (including scanning electron microscopy) and a reexam...
Article
Full-text available
Mymarothecium boegeri sp. n. (Monogenea: Dactylogyridae) is described from the gills of Colossoma macropomum Cuvier (Characidae), collected from the aquaria of the "Centro de Pesquisas em Aquicultura, Departamento Nacional de Obras Contra as Secas (DNOCS)", Pentecoste City, State of Ceará, Brazil. Mymarothecium viatorum Boeger, Piasecki et Sobecka,...
Article
Full-text available
The ultrastructure of the body tegument of Metamicrocotyla macracantha (Alexander, 1954) Koratha, 1955, parasite of Mugil liza from Brazil, was studied by transmission electron microscopy. The body tegument is composed of an external syncytial layer, musculature, and an inner layer containing tegumental cells. The syncytium consists of a matrix con...
Article
Full-text available
Two species of Nasicola Yamaguti, 1968 are described from the nasal cavities of tunas ( Thunnus spp.) from off the coast of Brazil: N. brasiliensis n. sp. from T. obesus (Lowe) and the type-species, N. klawei (Stunkard, 1962), from T. albacares (Bonn.). The new species is differentiated from N. klawei on the basis of the large number of testes and...
Article
Full-text available
Rhipidocotyle pentagonum (Ozaki, 1924) is reported for the first time in South America parasitizing Auxis thazard and in a new host Katsuwonus pelamis. Tergestia laticollis (Rudolphi, 1819) is reported for the first time in South America and in Thunnus albacares, representing a new host record. Copiatestes filiferus (Leuckart, in Sars, 1885) is rec...
Article
Full-text available
Com o objetivo de avaliar a ação da lovastatina na postura do Schistosoma mansoni foram usados camundongos infectados com 100 ±10 cercárias da cepa LE. Trinta dias após a infecção, os animais foram tratados com 100, 200 e 400mg/kg de lovastatina, via oral, durante cinco dias consecutivos e sacrificados 7,15,30 ou 60 dias após o tratamento. Foram an...
Article
Full-text available
Aimed to evaluate the lovastatin action on Schistosoma mansoni oviposition, infected mice with 100 plus minus 10 cercariae of the LE strain were used. Thirty days after infection the animals were treated with 100, 200 and 400mg/kg of lovastatin, per os, during five consecutive days and then sacrificed 7, 15, 30 or 60 days after treatment. We analyz...
Article
Full-text available
The ultrastructure of the male reproductive system of Didymocystis wedli was studied for the first time, demonstrating spermiogenesis and spermatogenesis at different cell stages. The spermatozoa morphology was compared with that of other Digenea species. It was observed that the different cells of the spermatogenesis process follow the classic pat...
Article
Full-text available
Didymocystis wedli a parasite from the gills of Thunnus albacares from the coast of the State of Rio de Janeiro, is described by use of light and scanning electron microscopy. This is the first report of this species in Brazil and South America. New data are presented on the surface topography as demonstrated by scanning electron microscopy.
Article
Full-text available
Crassicutis cichlasomae Manter, 1936 is redescribed for the first time in South America and from a new host: Geophagus brasiliensis (Cichlidae). Iheringtrema iheringi Travassos, 1948 is redescribed for the first time since its original description from Pseudopimelodus zungaro (Pimelodidae); and new host records are referred to Genarchella genarchel...
Article
Full-text available
Anacanthorus penilabiatus is referred parasitizing the type-host Piaractus mesopotamicus (Serrasalmidae) and two new hosts, Colossoma macropomum and C. brachypomum (Characidae) from fish ponds of "Departamento Nacional de Obras Contra as Secas", Pentecoste, State of Ceará, Brazil. Table of measurements and the first description of the egg are prese...
Article
Full-text available
The surface topography and ultrastructure of the tegument of Paranaella luquei Kohn, Baptista-Farias & Cohen, 2000, a microcotylid monogenean parasite from the gills of Hypostomus regani (Ihering, 1905) (Loricariidae) was studied by scanning (SEM) and transmission electron microscopy (TEM). By SEM, it was observed that the tegument presents transve...
Article
Full-text available
The tegument of adult Saccocoelioides godoyi Kohn & Froes, 1986 (Digenea: Haploporidae), specimens of which were collected from the intestine of the freshwater fish, Leporinus friderici (Bloch, 1794) (Anostomidae) from the reservoir of Itaipu Hydroelectric Power Station, Parana State, Brazil, was studied by transmission electron microscopy. The teg...
Article
Full-text available
Ultrastructural observations of spermatogenesis and sperm development of Saccocoelioides godoyi, an intestinal parasite of Leporinus friderici (Bloch, 1794) are described. The irregular-shaped spermatogonia form a peripheral layer, and show a prominent nucleus. Spermatocytes are larger than spermatogonia, and in the early stage present synaptonemal...
Article
Full-text available
Paranaella, a new microcotyline monotypic genus, is erected to accommodate Paranaella liquei sp. n., parasite of gill filaments from Hypostomus sp., Hypostomus regani (Ihering) and Rhinelepis aspera Spix et Agassiz (Loricariidae) from the Parani River, Brazil. The new genus is most closely related to Microcotyle Van Beneden et Hesse, 1863, Diplosta...
Article
Chalcinotrema thatcheri n. sp. from the intestine of Schizodon knerii is described. It is most closely related in general morphology to C. salobrensis Freitas, 1947 and C. ruedasueltensis Thatcher, 1978, from which it differs, respectively, in: testis-size, the distribution of the vitelline follicles and the distance between the gonads; and body-si...
Article
Full-text available
Ultrastructural observations of spermatogenesis and spermiogenesis in Microcotyle sp. a microcotylid monogenean parasite from the gills of Hypostomus sp., are described. The spermatogonia were irregularly shaped, forming a peripheral layer of cells; spermatocytes were larger than spermatogonia and a nuclear synaptonemal complex was observed; young...
Article
Full-text available
The camallanid nematode Oncophora melanocephala (Rudolphi, 1819) is redescribed from specimens collected in tunas, Thunnus thynnus (L.), T. albacares (Bonnaterre), T. atlanticus (Lesson) and Auxis thazard (Lacépède) from the Atlantic littoral of Rio de Janeiro, Brazil. In addition to a specific structure of the buccal capsule, the species is charac...
Article
Full-text available
Mice experimentally infected with Schistosoma mansoni were treated orally with artesunate (Lactab) in a single dose of 300 or 500 mg/kg or over a period of five consecutive days. The animals were sacrificed 7, 30, 60 or 90 days after treatment. Statistically significant differences were found in the distribution and mortality of the worms and in th...
Article
Full-text available
Camundongos infectados experimentalmente com Schistosoma mansoni foram tratados, em dose oral única, com artesunato (LACTAB®), 300 ou 500mg/kg ou durante cinco dias consecutivos. Os animais foram sacrificados 7, 30, 60 ou 90 dias após o tratamento. Diferenças estatisticamente significativas foram encontradas na distribuição e mortalidade dos vermes...
Article
Full-text available
A list of 135 monogenean species is presented updating the papers published by Kohn & Cohen (1989) and Kohn & Paiva (2000), increasing to 658 the number of known species in South America. After 1997, 104 monogeneans had been described as new species: 65 from Brazil, 13 from Argentina, 10 from Venezuela, 04 from Chile, two from Guyana, one from Fren...
Article
Full-text available
An electron microscopic study of the vitelline follicles of Metamicrocotyla macracantha (Alexander, 1954) Koratha,1955 showed that they are composed of cells in different stages of development. The immature cells have a large nucleus, nucleolus, cytoplasm with free ribosomes and few mitochondria. The developing vitelline cells present granules whic...
Article
Full-text available
Prosthenhystera obesa (Diesing,1850) Travassos, 1922 from the gall bladder of Astyanax bimaculatus, Caranx gibbosus, Galeocharax humeralis, Leporinus copelandii, Pimelodus fur, Pseudopimelodus roosevelti, Salminus brevidens, Salminus maxillosus and from the new hosts, Cynopotamus amazonum and Triurobrycon lundii is redescribed, demonstrating a larg...
Article
Full-text available
The present paper comprises a systematic survey of nematodes of the superfamily Seuratoidea collected from fishes of the Paraná River, southern Brazil, in 1992-1995. The following species were recorded: Neoparaseuratum travassosi Moravec, Kohn et Fernandes, 1992, Spectatus sp., Seuratoidea gen. sp. larvae, Cucullanus brevispiculus Moravec, Kohn et...
Article
Full-text available
The tegument of the adult form of Prosorhynchoides arcuatus (Linton, 1900) (Trematoda, Bucephalidae) from the intestine of Pomatomus saltator (L.) from the Atlantic coast of the State of Rio de Janeiro, Brazil was studied by transmission electron microscopy. The tegument consists of two layers: an external, constituted by a syncytium, containing sp...
Article
Cynoscionicola jamaicensis Lambert and Euzet, 1979 (Heteraxinidae) is redescribed from a new host, Cynoscion acoupa (Lacepede, 1802) (Sciaenidae). Orbocotyle marplatensis Euzet and Suriano, 1975 (Diclidophoridae) is reported from Prionotus punctatus Bloch, 1797 (Triglidae). The records of these species enlarged the previously known geographical dis...
Article
Full-text available
Ultrastructural aspects of spermatogenesis, spermiogenesis and of the mature spermatozoon of a microcotylid monogenean Metamicrocotyla macracantha parasite from Mugil liza, are described. The irregularly-shaped spermatogonia divides by successive mitoses, forming the primary spermatocytes, identified by the presence of synaptonemal complexes in the...
Article
Full-text available
Prosorhynchoides arcuatus (Linton, 1900) from the intestine of Pomatomus saltator (L.) from the Atlantic coast of the State of Rio de Janeiro is studied by scanning electron microscopy, with detailed description of tegumental spines. Comments on the synonymy of this species with Bucephalopsis callicotyle Kohn, 1962 are made. The tegument of adult P...
Article
The cephalic end of the type species of pharyngodonid genera Travnema and Cosmoxynemoides, T. travnema Pereira, 1938 and C. aguirrei Travassos, 1949, parasites of Brazilian freshwater fishes, was studied by scanning electron microscopy. The mouth aperture of Travnema was found to be circular, surrounded by four cephalic papillae and two lateral amp...
Article
Full-text available
Rhipidocotyle gibsoni n.sp. is described from Acestrorhynchus lacustris from Paraná River, brazil. It is most closely related to r. froesi n. sp. and to R. eckmanni in the shape of the cephalic hood, differing in the extent of the uterus, in the position of the vitelline follicles and in that the host is a freshwater fish. Rhipidocotyle froesi n. s...
Article
Full-text available
Examination of freshwater fishes from the Paraná River in southern Brazil during March 1992, revealed the presence of two new, previously undescribed species of the genus Goezia: G. brasiliensis sp. n. is described from the stomach of Brycon hilarii (family Characidae) (type host) and the intestine of Pseudoplatystoma coruscans (Pimelodidae) and it...
Article
Full-text available
Metamicrocotyla macracantha (Alexander, 1954) from a new host, Mugil liza (Pisces, Mugilidae) from the Atlantic coast of Rio de Janeiro, Brazil, is redescribed using light and scanning electron microscopy. The type-specimens of Metamicrocotyla inoblita Buhrnheim, 1970, from Mugil platanus from Espirito Santo, Brazil, were re-examined and compared w...
Article
Full-text available
Balanorchis anastrophus Fischoeder, 1901, from the reticulum of Bos taurus is reported for the first time in the State of Pará, Brazil. The surface topography as revealed by scanning electron microscopy is presented.
Article
Three new oxyuroid nematode species of the family Pharyngodonidae are described from the intestine of freshwater catfishes in Brazil (River Paran), two of them being representatives of new monotypic genera: Ichthyouris brasiliensis n. sp. from Pterygoplichthys aculeatus, Brasilnema pimelodellae n. g., n. sp. from Pimelodella gracilis, and Parasynod...
Article
Full-text available
A new nematode genus and species. Neoparaseuratum travassosi n. g., n. sp., is described from the intestine of the freshwater thorny catfish, Pterodoras granulosus (Valenciennes), from the Paraná River, Brazil. This seuratoid nematode species represents a new genus of the family Quimperiidae, being characterized mainly by the presence of numerous n...
Article
Full-text available
Bicotylophora trachinoti (Mac Callum, 1921) from Trachinotus carolinus L.; Pseudanthocotyloides heterocotyle (Van Beneden, 1871) from Cetengraulis edentulus (Cuvier), and Decapterus punctatus (Cuvier), new host records; Pseudomazocraes selene Hargis, 1957 from Selene vomer (L.) and Caranx latus Agassiz, new host record, are reported for the first t...
Article
Full-text available
Cribomazocraes travassosi n. sp. is described from Harengula clupeola (Cuvier, 1829) from Rio de Janeiro, coast, Brazil. It differs from C. nagibinae, Mamaev, 1981 in the size and shape of opisthohaptor and lappet and in the smaller size of anchors. From C. bychowskyi it also differs in the extension of vittelaria. A key for the species of the genu...
Article
Full-text available
The action of the ether of artemisinin (artemether) on Schistosoma mansoni in mice and hamsters experimentally infected with the LE strain was studied. In mice, the drug showed high schistosomicidal activity using a single intramuscular dose of 100 mg/kg/day. By the oral route, this dose showed a low activity. Mice treated with a single intramuscul...
Article
Kritskyia n. g. is proposed for K. moraveci n. sp. from the urinary bladder and ureters of Rhamdia quelen (Quoy & Gaimard, 1824), a pimelodid fish from the reservoir of the Hydroelectric Power Station of Passo Fundo, Rio Grande do Sul State, Brazil. The new genus is most closely related to Acolpenteron Fischthal & Allison, 1940, from which it diffe...
Article
Large numbers of anisakid nematodes identified as Raphidascaris (Sprentascaris) hypostom (Petter et Cassone, 1984) were collected from the stomach and intestine of armoured catfishes P leco stomus albopunctatus, P. commersoni, P. derbyi, and Ancistrus cirrhosus (all representing new host records) from the three water reservoirs, Salto Osório, Salto...
Article
The genus Genarchella Travassos, Artigas & Pereira, 1928 is reinstated for some species from South American fishes previously attributed to Halipegus Looss, 1899. Aspects of the morphology of G. genarchella Travassos, Artigas & Pereira, 1928 and G. parva Travassos, Artigas & Pereira, 1928 are redescribed. Astyanax bimaculatus, Moenkhausia doceana,...
Article
Full-text available
From the gills of 100 Micropogonia furnieri (Desmarest, 1823) from Atlantic coast of Rio de Janeiro State, were recovered Macrovalvitrema sinaloense Caballero & Bravo-Hollis, 1955, Pterinotrematoides mexicanum Caballero & Bravo-Hollis, 1955, Rhamnocercus rhmnocercus Monaco, Wood & Mizelle, 1954 and Encotyllabe spari Yamaguti, 1934. M. furnieri repr...
Article
Full-text available
Mazocraeoides georgei price, 1936 and mazocraeoides opisthonema Hargis, 1955 are reported for the first time in Brazil in Brevoortia aurea (Spix, 1829) and in Harengula clupeola (Cuvier, 1829) respectively, clupeid fishes from the littoral of Rio de janeiro State, which represent new host records. Mazocraeoides olentangiensis Sroufe, 1958 and mazoc...
Article
Full-text available
São descritos Procamallanus petterae n. sp. paradito de Plecostomus albopunctatus e Spirocamallanus pintoi n. sp. de Corydors paleatus. P. petterae diferencia-se das demais espécies do gênero por apresentar cápsula bucal sem estrias, com cinco estruturas em forma de dentes na base e quatro estruturas em forma de placas próximo da margem anterior; r...
Article
Full-text available
Na Usina Hidrelátrica Salto Osório foram examinados 88 peixes, dos quais 24 (27,3%) encontravam-se parasitados por oito espécies de nematóides: Capillaria sp., formas imaturas de Contracoecum sp., Procamallanus peraccuratus Pinto et al., 1976, Procamallanus petterae Kohn & Fernandes, 1988, Raphidascaris sp., Spirocamallanus intermedius Pinto et al....
Article
Halipegus dubius Klein, 1905 is redescribed and illustrated from a Brazilian frog Leptodactylus ocellatus. The type-material of Halipegus genarchella (Travassos, Artigas & Pereira, 1928) and Halipegus parva (Travassos, Artigas & Pereira, 1928) are redescribed with original figures. New synonyms are proposed: Halipegus salmini Yamaguti, 1958 is cons...
Article
Full-text available
Este trabalho abrange o parasitismo por nematóides, acantocéfalos, trematódeos e cestóides de 1027 peixes pertencentes a 45 espécies do rio Mogi Guassu, examinados nos anos de 1927, 1946, 1947, 1962, 1983 e 1985, como uma contribuição ao conhecimento da fauna parasitária em 58 anos. São relacionadas 32 espécies de nematóides, 21 de trematódeos, trê...
Article
Full-text available
This paper concerns the parasitism of Nematoda, Trematoda, Acanthocephala and Cestoda from 1027 fishes of 45 species from Mogi Guassu river, examined in the years 1927, 1946, 1947, 1962, 1983 and 1985 as a contribution to the knowledge of the parasitological fauna in 58 years. Thirty two species of nematodes, 21 of trematodes, 3 of acanthocephalans...
Article
Full-text available
Teratotrema dubium Travassos, Artigas & Pereira, 1928, trematódeo digenético parasita de Pseudocurimata plumbea (Curimatidae: Pisces) é redescrito com novos dados morfológicos e figuras originais.
Article
Full-text available
Foram examinados 114 exemplares de peixes do estuário de Guaiba, pertencentes a onze diferentes espécies, para o estudo dos trematódeos digenéticos. É descrita uma espécie nova para o gênero Saccocoelioides, e são referidas as seguintes espécies: Creptotrema creptotrema (em novo hospedeiro); Acanthostomum gnerii, Crepidostomum platense, Eocreadium...
Article
Full-text available
New morphological data, original measurements and figures of syntypes of the species of Saccocoelioides described by Szidat in 1954 are presented: S. nanii, S. elongatus, S. magniovatus, S. magnus, S. quintus (=S.sp. 5) ans S. szidati (=S.sp.6). Two speciments of S. elongatus are identified to S. nanii, S. leporinodus is considered a synonym of S....
Article
Full-text available
São apresentados na presente nota, novos dados morfológicos sobre o acetábulo de Opecoeloides pedicathedrae com dez estruturas papiliformes ao invés de seis previamente descritas, figuras originais e medidas.