Patologia De Peixes Da Amazônia Brasileira, Alterações Histológicas Em Brânquias Provocadas Por Ergasilus, Brasergasilus E Acusicola (Crustácea: Cyclopoida: Ergasilidae)

Thatcher, Vernon E.; Boeger, Walter A.

doi:10.1590/1809-43921983132441

Cited by 8 publications

(5 citation statements)

References 1 publication

(1 reference statement)

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“…are scarce and restricted to the isopod Amphira junki in T. albus , the brachyuran Dolops sp. and the copepod Ergasilus sp., both parasitic to T. elongatus (Thatcher & Boeger, 1983; Thatcher, 2006; Eiras et al , 2010).…”

Section: Discussionmentioning

confidence: 99%

Variation in the parasite community of the sardine fishTriportheus nematurus(Actinopterygii: Characidae) from the Medalha lagoon in the Pantanal wetland, Brazil

2013

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In July 2009 and July 2010 (two dry periods separated by an atypically large flood in the Pantanal wetland of Brazil), 34 and 33 specimens of the sardine fish Triportheus nematurus were collected, respectively, for the study of the metazoan parasite community of this species. Parasite ecological and community descriptors were calculated for both host samples, and possible similarities were tested statistically. Five species of metazoan parasites were identified, four of which were common to both host samples. A total of 61 metazoan parasites were collected from all fish hosts (17 specimens in July 2009 (mean: 0.5 ± 0.66 parasites/fish) and 44 specimens in July 2010 (mean: 1.33 ± 1.41 parasites/fish)). The nematode Procamallanus hilarii and the monogenean Anacanthorus sp. were the most prevalent and abundant species in 2009 and 2010, respectively. The mean total abundance and species richness were significantly higher in 2010. Parasite communities in both samples of T. nematurus were characterized by species with low prevalence, abundance, mean total abundance and species richness, thus indicating low parasite diversity. Significant differences in the prevalence and abundance of P. hilarii and Anacanthorus sp. between the two samples allowed the discrimination of infracommunities, which were united in two distinct groups. This appears to be the first evidence that the peculiar hydrological dynamics of the southern Pantanal wetland (Brazil) exert an important influence over the structure of the parasite community.

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Section: Discussionmentioning

confidence: 99%

Variation in the parasite community of the sardine fishTriportheus nematurus(Actinopterygii: Characidae) from the Medalha lagoon in the Pantanal wetland, Brazil

2013

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“…According to Thatcher & Boeger (1983) and Thatcher (1991), copepods cause epithelial hyperplasia, metaplasia, and lamellar fusion in the gill filaments of their hosts. This thereby reduces blood circulation in the filaments and causes necrosis.…”

Section: Discussionmentioning

confidence: 99%

Co-infestation of gills by different parasite groups in the mullet, Mugil platanus Günther, 1880 (Osteichthyes, Mugilidae): effects on relative condition factor

Ranzani-Paiva

Silva-Souza

2004

Braz. J. Biol.

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This study involved 334 specimens of mullet, Mugil platanus, captured monthly in the estuarine region of Cananéia, São Paulo State, Brazil, from July 1988 to June 1989, and examined for the presence of gill parasites. Parasitological inspections revealed the occurrence of the following groups: Trichodina sp., Monogenoidea, Copepoda, and Hirudinea. Only four mullets were not parasitized. Total weight and total length of all 334 mullet specimens examined were used for adjusting the weight-length relationship curve and calculating the relative condition factor (Kn). The 118 specimens infested with monogenoideans on average had lower weights than expected (Kn < 1.0), and the 81 fish co-infested with Copepoda, Monogenoidea, and Trichodina sp. showed a Kn < 1.0. The other infested and non-infested mullets had a Kn > 1.0. It was possible to infer that gill infestation with monogenoideans alters mullet weight, especially in the presence of co-infestation with Trichodina sp. and copepods.

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“…Neotropical ergasiloids may attach themselves to their hosts in a number of different ways (see Thatcher & Boeger, 1983 The antennae of Prehendorastrus spp. is modified to allow each individual prehensile antenna to grasp a gill raker and latch.…”

Section: Discussionmentioning

confidence: 99%

“…Species of Ergasilus, Acusicola and Brasergasilus parasitise the gill filaments (see Thatcher & Boeger, 1983); Rhinergasilus spp. (see Boeger & Thatcher, 1988) and…”

Section: Introduction Materials and Methodsmentioning

confidence: 99%

Prehendorastrus n. g. (Poecilostomatoida, Ergasilidae) with descriptions of two new species from the gill rakers of Hypophthalmus spp. (Teleostei, Siluriformes) from the Brazilian Amazon

Boeger

Thatcher

1990

Syst Parasitol

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Prehendorastrus n.g. (Poecilostomatoida, Ergasilidae) is proposed for two new species (P. bidentatus and P. monodontus) collected from the gill rakers of the catfishes Hypophthalmus edentatus Spix, 1829 and H. fimbriatus Kner, 1857, from the Furo do Catal~o, near Manaus, Amazonas, Brazil. Species of the new genus are principally characterised by having antennae modified to individually grasp the gill rakers and latch, and second antennal segment with one or two prominent teeth. Prehendorastrus spp. are the first species of the Ergasilidae reported from the gill rakers of fish.

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Patologia De Peixes Da Amazônia Brasileira, Alterações Histológicas Em Brânquias Provocadas Por Ergasilus, Brasergasilus E Acusicola (Crustácea: Cyclopoida: Ergasilidae)

Cited by 8 publications

References 1 publication

Variation in the parasite community of the sardine fishTriportheus nematurus(Actinopterygii: Characidae) from the Medalha lagoon in the Pantanal wetland, Brazil

Variation in the parasite community of the sardine fishTriportheus nematurus(Actinopterygii: Characidae) from the Medalha lagoon in the Pantanal wetland, Brazil

Co-infestation of gills by different parasite groups in the mullet, Mugil platanus Günther, 1880 (Osteichthyes, Mugilidae): effects on relative condition factor

Prehendorastrus n. g. (Poecilostomatoida, Ergasilidae) with descriptions of two new species from the gill rakers of Hypophthalmus spp. (Teleostei, Siluriformes) from the Brazilian Amazon

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