Results 111 to 120 of about 253 (143)

Fine Structure of the Gastrodermis of Two Species of Gyrodactylus (Monogenoidea: Polyonchoinea, Gyrodactylidae) [PDF]

Transactions of the American Microscopical Society, 1994
Transmission electron microscopy was used to determine the organization and fine structure of the gastrodermis of two species of Gyrodactylus. The gastrodermis consists of a syncytial epithelium characterized by large widely spaced nuclei, two types of vesicular structures, mitochondria with tubular cristae, Golgi complexes, and scattered rough ...
Delane C Kritsky, Denis Bourguet
exaly   +4 more sources

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Taxonomy and biology of the Gyrodactylidae (Monogenea)

2022
The taxonomy of the Gyrodactylidae (Monogenea) from marine and freshwater fishes of the Australian continent is examined for the first time. New species are described for three known genera (Anacanthocotyle, Gyrodactylus and Polyclithrum) and a new, viviparous genus is also described.
openaire   +2 more sources

Choice matters: Incipient speciation in Gyrodactylus corydori (Monogenoidea: Gyrodactylidae)

International Journal for Parasitology, 2011
We investigated how Gyrodactylus corydoriBueno-Silva and Boeger, 2009 exploits two sympatric host species, Corydoras paleatus (Jenyns, 1842) and Corydoras ehrhardti Steindachner, 1910. Specimens of G. corydori were collected from the Piraquara and Miringuava Rivers, State of Paraná, Brazil, between 2005 and 2006.
Marlus, Bueno-Silva, Walter A, Boeger, Marcio R, Pie   +2 more
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The Nuclear rDNA Region of Gyrodactylus arcuatus and G. branchicus (Monogenea: Gyrodactylidae)

The Journal of Parasitology, 2000
The primary structure of the ribosomal DNA internal transcribed spacers (ITS-1 and ITS-2) and 5.8S rRNA gene were used to characterize and identify 2 monogenean species of Gyrodacrylus living externally on the threespine stickleback (Gasterosteus aculeatus).
M S, Zi tara, A, Arndt, A, Geets, B, Hellemans, F A, Volckaert   +4 more
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Description of Gyrodactylus banmae n. sp. (Monogenea, Gyrodactylidae) parasitic on zebrafish, Danio rerio

Parasitology International, 2022
A new species of Gyrodactylus was described on the body surface of zebrafish (Danio rerio) in China. Basing on morphological characteristics and ITS sequence, we identified the parasite as a new member of the Gyrodactylus-wageneri group. Morphologically, Gyrodactylus sp. nov. is greatly similar to "G.
Xiao, Jin, Wenxiang, Li, Yingyin, Cheng, Ming, Li, Shangong, Wu, Hong, Zou, Guitang, Wang   +6 more
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SPECIATION BY HOST SWITCH AND ADAPTIVE RADIATION IN A FISH PARASITE GENUS GYRODACTYLUS (MONOGENEA, GYRODACTYLIDAE)

Evolution, 2002
Four hundred Gyrodactylus species have been formally described, but the estimated number of species in this fish ectoparasite genus of Monogenean Platyhelminthes is more than 20,000. The unusually high species richness has lead to the hypotheses of speciation and adaptive radiation via host switching.
Marek S, Zietara, Jaakko, Lumme
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Seasonal occurrence and metrical variability of Gyrodactylus rhodei Žitňan 1964 (Monogenea, Gyrodactylidae)

Parasitology Research, 2005
The seasonal dynamics of Gyrodactylus rhodei, a monogenean ectoparasite of bitterling (Rhodeus sericeus), was studied from June 2000 to May 2001 in the Kyjovka River, Czech Republic. A negative relationship between prevalence and intensity of infection of G. rhodei and water temperature was found.
M, Dávidová, J, Jarkovský, I, Matejusová, M, Gelnar   +3 more
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Species delimitation of Gyrodactylus (Monogenea: Gyrodactylidae) infecting the southernmost cyprinids (Actinopterygii: Cyprinidae) in the New World

Parasitology Research, 2021
The genus Gyrodactylus von Nordmann, 1832 represents one of the most diverse and widespread taxa within Monogenea, with approximately 500 species described worldwide. Thirty-three species of Gyrodactylus have been recorded in Mexico, and in the last two decades, at least 26 new species have been described mainly from freshwater fish families such as ...
Carlos Daniel Pinacho-Pinacho, Miguel Calixto-Rojas, Adriana García-Vásquez, Ismael Guzmán-Valdivieso, Juan J. Barrios-Gutiérrez, Miguel Rubio-Godoy   +5 more
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Molecular markers for gyrodactylids (Gyrodactylidae: Monogenea) from five fish families (Teleostei)

International Journal for Parasitology, 2001
Thirty-one gyrodactylid species from five families of freshwater fish were examined and variable region V4 of the 18S small subunit ribosomal RNA gene and ribosomal RNA internal transcribed spacers ITS1 and ITS2 were sequenced. Both the V4 region and spacers ITS1 and ITS2 proved useful for gyrodactylid diagnosis.
I, Matejusová, M, Gelnar, A J, McBeath, C M, Collins, C O, Cunningham   +4 more
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A New Species of Swingleus (Monogenea: Gyrodactylidae) from the Mummichog Fundulus heteroclitus, in the Delaware Bay

The Journal of Parasitology, 2000
Swingleus ancistrus n. sp. (Monogenea: Gyrodactylidae) is described from the skin and fins of Fundulus heteroclitus from Canary Creek Marsh, Lewes, Delaware. Subsequent records from New Jersey, Maryland, Virginia, and North Carolina are reported. Swingleus ancistrus is differentiated from S.
P A, Billeter, M M, Klink, T K, Maugel
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