The Experts below are selected from a list of 1569 Experts worldwide ranked by ideXlab platform
Adjair Antonio Do Nascimento - One of the best experts on this subject based on the ideXlab platform.
-
chaunus ictericus spix 1824 as Paratenic host of the giant kidney worm dioctophyme renale goeze 1782 nematoda enoplida in sao cristovao district tres barras county santa catarina state brazil
Veterinary Parasitology, 2009Co-Authors: Daniela Pedrassani, Estevam Guilherme Lux Hoppe, Jose Hairton Tebaldi, Adjair Antonio Do NascimentoAbstract:Dioctophyme renale larvae have been found in cysts in the gastric wall of 5.17% (3/58) Chaunus ictericus specimens from Sao Cristovao district, Tres Barras municipality, Santa Catarina state, Brazil. However, larvae of this nematode were not found in sympatric Chaunus schneideri. The larvae caused a mild granulomatous reaction. This is the first report of Paratenic hosts for D. renale in Brazil, and probably is also the first in the Neotropical region.
-
Chaunus ictericus (Spix, 1824) as Paratenic host of the giant kidney worm Dioctophyme renale (Goeze, 1782) (Nematoda: Enoplida) in Sao Cristovao district, Tres Barras county, Santa Catarina state, Brazil
Elsevier B.V., 2009Co-Authors: Pedrassani Daniela, Lux Hoppe, Estevam Guilherme, Tebaldi, Jose Hairton, Adjair Antonio Do NascimentoAbstract:Dioctophyme renale larvae have been found in cysts in the gastric wall of 5.17% (3/58) Chaunus ictericus specimens from Sao Cristovao district, Tres Barras municipality, Santa Catarina state, Brazil. However, larvae of this nematode were not found in sympatric Chaunus schneideri. The larvae caused a mild granulomatous reaction. This is the first report of Paratenic hosts for D. renale in Brazil, and probably is also the first in the Neotropical region. (C) 2009 Elsevier B.V. All rights reserved
Daniela Pedrassani - One of the best experts on this subject based on the ideXlab platform.
-
chaunus ictericus spix 1824 as Paratenic host of the giant kidney worm dioctophyme renale goeze 1782 nematoda enoplida in sao cristovao district tres barras county santa catarina state brazil
Veterinary Parasitology, 2009Co-Authors: Daniela Pedrassani, Estevam Guilherme Lux Hoppe, Jose Hairton Tebaldi, Adjair Antonio Do NascimentoAbstract:Dioctophyme renale larvae have been found in cysts in the gastric wall of 5.17% (3/58) Chaunus ictericus specimens from Sao Cristovao district, Tres Barras municipality, Santa Catarina state, Brazil. However, larvae of this nematode were not found in sympatric Chaunus schneideri. The larvae caused a mild granulomatous reaction. This is the first report of Paratenic hosts for D. renale in Brazil, and probably is also the first in the Neotropical region.
Estevam Guilherme Lux Hoppe - One of the best experts on this subject based on the ideXlab platform.
-
chaunus ictericus spix 1824 as Paratenic host of the giant kidney worm dioctophyme renale goeze 1782 nematoda enoplida in sao cristovao district tres barras county santa catarina state brazil
Veterinary Parasitology, 2009Co-Authors: Daniela Pedrassani, Estevam Guilherme Lux Hoppe, Jose Hairton Tebaldi, Adjair Antonio Do NascimentoAbstract:Dioctophyme renale larvae have been found in cysts in the gastric wall of 5.17% (3/58) Chaunus ictericus specimens from Sao Cristovao district, Tres Barras municipality, Santa Catarina state, Brazil. However, larvae of this nematode were not found in sympatric Chaunus schneideri. The larvae caused a mild granulomatous reaction. This is the first report of Paratenic hosts for D. renale in Brazil, and probably is also the first in the Neotropical region.
Jose Hairton Tebaldi - One of the best experts on this subject based on the ideXlab platform.
-
chaunus ictericus spix 1824 as Paratenic host of the giant kidney worm dioctophyme renale goeze 1782 nematoda enoplida in sao cristovao district tres barras county santa catarina state brazil
Veterinary Parasitology, 2009Co-Authors: Daniela Pedrassani, Estevam Guilherme Lux Hoppe, Jose Hairton Tebaldi, Adjair Antonio Do NascimentoAbstract:Dioctophyme renale larvae have been found in cysts in the gastric wall of 5.17% (3/58) Chaunus ictericus specimens from Sao Cristovao district, Tres Barras municipality, Santa Catarina state, Brazil. However, larvae of this nematode were not found in sympatric Chaunus schneideri. The larvae caused a mild granulomatous reaction. This is the first report of Paratenic hosts for D. renale in Brazil, and probably is also the first in the Neotropical region.
Csaba Szekely - One of the best experts on this subject based on the ideXlab platform.
-
differential survival of 3rd stage larvae of contracaecum rudolphii type b infecting common bream abramis brama and common carp cyprinus carpio
Parasitology Research, 2019Co-Authors: Kalman Molnar, Per W Kania, Csaba Szekely, Ferenc Baska, Tamas Muller, B Nowak, Kurt BuchmannAbstract:The main fish host reaction to an infection with third stage anisakid nematode larvae is a response in which host immune cells (macrophages, granulocytes, lymphocytes) in affected internal organs initially are attracted to the parasite whereafter fibroblasts may enclose the parasite forming granuloma. Generally, the reaction is non-lethal to the parasite which may survive for years in the fish host retaining infectivity to the final host. This may also apply for the anisakid nematode Contracaecum rudolphii (having the adult stage in cormorants, using copepods as first intermediate/Paratenic host and zooplankton feeding fish as Paratenic hosts). The present study has shown that most Contracaecum rudolphii larvae survive in bream (Abramis brama) (from Lake Balaton, Hungary) whereas the majority of the nematode larvae die in Cyprinus carpio (from Lake Heviz, directly connected to Lake Balaton). Both cyprinid host species interacted with the nematode larvae through establishing a marked cellular encapsulation around them but with different effects. The differential survival in common carp and bream may theoretically be explained by ecological factors, such as the environmental temperature which either directly or indirectly affect the development of nematode larvae, and/or intrinsic host factors, such as differential immune responses and host genetics.
-
host reaction in Paratenic fish hosts against 3rd stage larvae of anguillicola crassus
Diseases of Aquatic Organisms, 1996Co-Authors: Csaba Szekely, Kalman MolnarAbstract:Many fish species of Lake Balaton (Hungary) serve as Paratenic hosts for the 3rd stage larvae of the eel parasite Anguillicola crassus. The incidence oi different phases of the host reaction varies with Paratenic fish host but its nature is basically the same. The appearance of mononuclear cells around the larvae migrating in the tissues or in the abdominal cavity is regarded as a sign of cellular host reaction. The cells adhering to the surface of the larvae gradually assume an epithelioid shape and form a granuloma. With the advancement of the process the larvae and the epithelioid cells surrounding them undergo necrosis, and the granuloma becomes surrounded by a connective tissue capsule. In more chronic cases, the inside of the parasitic nodule surrounded by several layers of connective tissue is filled out by amorphous tissue and parasite debris. In the 'suitable Paratenic hosts' Anguillicola sp. larvae not affected by the host's cellular reaction outnumber those affected by it, whereas in the 'less suitable Paratenic hosts' the cellular reaction very rapidly forces the larvae into foci and destroys them.
-
experimental studies on the infectivity of anguillicola crassus third stage larvae nematoda from Paratenic hosts
Folia Parasitologica, 1996Co-Authors: Csaba SzekelyAbstract:Abstract The swimbladder parasite Anguillicola crassus Kuwahara, Niimi et Itagaki, 1974 (Nematoda: Dracunculoidea) is a well-known pathogenic parasite of the Japanese and European eels. Numerous studies on the life cycle of the parasite have revealed the involvement of a copepod or an ostracod intermediate host and a fish Paratenic host, in which the third-stage larvae (L3) infective to the eel develop. The present study comprised infection experiments with the larvae of A. crassus. These experiments can be divided into three groups: (1) experimental reproduction of the parasite's life cycle via copepod intermediate hosts and fish Paratenic hosts, (2) infection of another potential Paratenic host with third-stage larvae of A: crassus collected from a Paratenic host; (3) study of the ability of larvae damaged by Paratenic hosts to infect the final host, the eel. Infection experiments have revealed that larvae which are still viable but have become encapsulated as a result of the host reaction mounted against them by cyprinid Paratenic hosts (bleak, Alburnus alburnus) have lost their ability to infect the final host, the eel. At the same time, experimental infection of the eel with larvae derived from other Paratenic fish hosts (river goby, Neogobius fluviatilis; ruffe, Gymnocephalus cernua) showing no or only weak host reaction proved to be successful.
-
dynamics of anguillicola crassus nematoda dracunculoidea larval infection in Paratenic host fishes of lake balaton hungary
Acta Veterinaria Hungarica, 1995Co-Authors: Csaba SzekelyAbstract:Anguillicola crassus, a nematode parasitizing the swimbladder of the European eel (Anguilla anguilla) caused substantial mortality among eels in Lake Balaton in the years 1991 and 1992. Parallel to a 3-year study of the infection dynamics of eels, Anguillicola larval infection of Paratenic host fishes was also surveyed in the lake between 1991 and 1993. During that study, a total of 1,382 specimens of 22 Paratenic host fish species were processed. The results showed that anguillicolosis had become a parasitosis widespread throughout the lake, and larval infection could be detected in practically all Paratenic hosts examined. The prevalence and intensity values recorded in the Paratenic hosts do not completely follow the dynamic change observed during the survey of eel infection. During the study of larval infection in Paratenic hosts, only inter-species differences in the prevalence and intensity of infection could be found, rather than the expected course of infection spreading from the West to the East in both space and time. Marked differences existed between Paratenic host species in the degree of host reaction to the larvae.
-
survey of the Paratenic hosts of anguillicola crassus in lake velence hungary
Acta Veterinaria Hungarica, 1994Co-Authors: Jamileh Pazooki, Csaba SzekelyAbstract:Anguillicola crassus infection of Paratenic hosts was investigated in Lake Velence, Hungary, in October 1992. A total of 155 specimens of 8 species (Gymnocephalus cernuus, Lepomis gibbosus, Stizostedion lucioperca, Abramis brama, Alburnus alburnus, Cyprinus carpio, Pseudorasbora parva and Rutilus rutilus) were examined: all species proved to be infected. There were large differences in the prevalence of infection among fishes, but the prevalence was generally higher in Perciform fishes and it was the highest in G. cernuus (100%). The occurrence and physical stage of larvae did not depend on the size of the fish. In S. lucioperca the size of third stage larvae was bigger than in other fishes, and only live larvae were found. The comparison of Lake Velence and Lake Balaton indicates that the rate of larval infection in Paratenic hosts of A. crassus is higher in Lake Velence. This might be explained by the significant ecological differences between the two lakes (population of intermediate hosts, water depth, salinity, pH).
