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Registros recuperados: 10
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Bacciger pellonaen. sp. (Trematoda, Fellodistornidae) from a freshwater fish, Pellona castelnaeanaValenciennes of Rondônia State, Brazil Acta Amazonica
Thatcher,Vernon E..
Bacciger pellonae n. ep. (Trematoda, Fellodistomidae) is described from the intestinal tract of a freshwater fish, Pellona castelnaeana Valenciennes, from the Brazilian state of Rondônia. The new species is similar to the type species of the genus, B. bacciger (Rudolphi, 1819) Nicoli, 1914, but differs from it in having a post-testicular, lobate ovary, intertesticular ceca and an acetabulum that is smaller than the genus to be reported from South America and the first from freshwater.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trematode; Fellodi stomidae; Fish parasite; Rondônia; Brazil; Amazonia.
Ano: 1992 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671992000400605
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Surface morphology of some Amphistomes (Trematoda) of Amazonian Fishes and the description of a new genus and species Acta Amazonica
THATCHER,Vernon E..
The surface morphology of specimens from ten different genera of amphistomes (Trematoda, Cladorchiidae) from Amazonian fishes is described and illustrated. The importance of body shape as a generic character is considered. Morphological changes as a result of growth are shown and explained in relation to the species Dadaytrema oxycephala. Additionally, Doradamphistoma bacuensis gen. et sp. n. is described from the catfish, Megalodoras irwini Eigenmann, 1925.The new genus and species is elongate and flattened, with external pharyngeal pouches, an esophageal bulb, a spherical cirrus sac, a post-bifurcal genital pore and pre-equatorial testes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish parasite; Trematode; Amphistome; Amazonia; Brazil.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671999000400607
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First record of Philometra katsuwoni (Nematoda, Philometridae), a parasite of skipjack tuna Katsuwonus pelamis (Perciformes, Scombridae), off South American Atlantic Coast Biota Neotropica
Cárdenas,Melissa Querido; Moravec,František; Kohn,Anna.
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 generally somewhat larger and their right spicule and the gubernaculum are longer. The subgravid female is described for the first time. It is characterized by the anterior inflation of the esophagus and by the presence of two distinct caudal lobes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Fish parasite; Nematode; Helminth.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000200025
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A fast and practical method for initial diagnosis of Piscinoodinium pillulare outbreaks: piscinootest Ciência Rural
Gomes,Ana Lucia Silva; Costa,Jesaías Ismael da; Benetton,Maria Linda Flora de Novaes; Bernardino,Geraldo; Belem-Costa,Andrea.
ABSTRACT: The dinoflagellate Piscinoodinium pillulare is a parasite with low parasitic specificity and unspecific geographical distribution. This research reported a simple and practical method - the principle of spontaneous sedimentation - to identify the presence of P. pillulare during massive infestations which does not require using precision equipment. Agitation in water of the gill arches of infested fish will elicit, after a period of rest, recording the accumulation of trophonts in the bottom of flasks. The method was applied during outbreaks of P. pillulare in tambaqui, Colossoma macropomum and matrinxã, Brycon amazonicus, in fish farms of the Amazon region and proved to be effective.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish parasite; Dinoflagellate; Piscinoodiniasis.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700501
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Anilocra montti sp. n. (Isopoda, Cymothoidae) a parasite of caged salmon and trout in Chile Zoologia
Thatcher,Vernon E.; Blumenfeldt,Carlos Lobos.
Anilocra montti sp. n. (Isopoda, Cymothoidae) is described from the mouths and branchial chambers of caged salmon and trout from Puerto Montt, Chile. The description is based on a detailed study of 30 male specimens. No females were found, indicating that salminoids are not the normal hosts of the parasite. The new species differs from others in the genus by having carinae on pereopods 4-7, a pleon that is abruptly narrower than the pereon, second pleopods without appendices masculina, a pleotelson that is wider than long and uropods with subequal rami.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Isopod; Cymothoid; Fish parasite; Chile; South America.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500023
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Brasacanthus sphoeroides gen. n., sp. n. (Acanthocephala, Echinorhynchidae) from a coastal marine fish of Paraná State, Brazil Zoologia
Thatcher,Vernon E..
Brasacanthus sphoeroides gen. n.. sp. n. is described from the marine fish, Sphoeroides greeleyi (Steindachner), taken in Paranaguá Bay, Paraná State, Brazil. The new genus differs from Acanthocephalus Koelreuter, 1771, the nearest genus in the family Echinorhynchidae, by having very flat and variable lemnisci in both sexes and a uterine egg reservoir in the female. The species is characterized by its spherical body form and in having parallel or diagonal testes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acanthocephala; Fish parasite; Puffer parasite; Paraná; Brazil; South America.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400024
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Riggia cryptocularis sp. nov. (Isopoda, Cymothoidae) from the body cavity of a freshwater fish of Mato Grosso do Sul State, Brazil Zoologia
Thatcher,Vernon E.; Lopes,Luiza Paula de Conceição; Froehlich,Otavio.
Riggia cryptocularis sp. nov. (Isopoda, Cymothoidae) is described on the basis of one female and one male specimen from the body cavity of freshwater fish from Mato Grosso do Sul State, Brazil. The new species is similar in size to R. paranensis Szidat, 1948, but differs from that species in the following respects. The body shapes are different since the widest part of the adult female is more anterior in R. paranensis. The eyes of the new species are covered and non-functional unlike those of the other species. The cephalon of the new species has a postero-dorsal elevation and a rounded and depressed frons which are lacking in the other species. Pereonites 5-7 are subequal in length in the new species and decrease in length in R. paranensis. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Cymothoidae; Fish parasite; Isopod parasite; Mato Grosso do Sul.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200019
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Anphira guianensis sp. nov. (Isopoda, Cymothoidae) from the gills of Acnodon oligacanthus Eigenmann (Pisces, Serrasalmidae) of French Guiana Zoologia
Thatcher,Vernon E..
Anphira guianensis sp. nov. (Isopoda, Cymothoidae) is described from the branchial cavity of a freshwater fish, Acnodon oligacanthus Eigenmann, 1903 from French Guiana. The new species differs from the other known species of the genus in a number of important respects. Adult females are less convex than those of the other two known species and the mouth points downward. The coxal plates are largest posteriorly, unlike those of the other species. The antennule is much stouter and longer than the antenna whereas in the other species these appendages are subequal. Additionally, the dactyls of the new species are much longer.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cymothoidae; Isopod parasite; Fish parasite; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600005
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Lironeca desterroensis sp. nov. (Isopoda, Cymothoidae) from the gills of a marine fish, Cetengraulis edentulus Cuvier, of Santa Catarina Island, Brazil Zoologia
Thatcher,Vernon E.; Souza-Conceição,José M.; Jost,Glauco Fernando.
Lironeca desterroensis sp. nov. (Isopoda, Cymothoidae) is described on the basis of 105 females and three males taken from the gill chambers of the marine fish, Cetengraulis edentulus (Cuvier,1829), obtained near Santa Catarina Island, Brazil. The new species resembles Lironeca redmanni Leach, 1818, in size and general appearance but differs from that species in a number of important respects. In the new species, the pleotelson is larger, the pleonites are laterally produced, the uropods have elongate and slender rami and the larval stage (Pullus II) has a prominent frontal projection.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Cymothoid; Fish parasite; Gill parasite; Isopod parasite; Marine isopod.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000200013
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Riggia acuticaudata sp. nov. (Isopoda, Cymothoidae) from the body cavity of a reshwater fish of Mato Grosso do Sul State, Brazil Zoologia
Thatcher,Vernon E.; Lopes,Luiza Paula C.; Froehlich,Otavio.
Riggia acuticaudata sp. nov. is described on the basis of 10 female specimens recovered from the body cavity of the freshwater catfish, Ancistrus sp. The fish were caught in a stream called the Corrego Piraputanga, a tributary of the Paraguai River. The new species differs from the others in the genus by being smaller and less convex and by having a pleotelson that tapers abruptly rather than being the same width throughout. Also, the pereopods and dactyls are much smaller, the maxillule has two terminal and three subterminal spines and the first two pleopods are elongate and acute. Additionally, R. acuticaudata sp. nov. is from a different Order of fish host and a new geographic area.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Isopod parasite; Cymothoid; Fish parasite; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600020
Registros recuperados: 10
Primeira ... 1 ... Última
 

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