Morphological and ultrastructural aspects of Myxobolus niger n. sp. (Myxozoa) gill parasite of Corydoras melini (Siluriformes: Callichthyidae) from Brazilian Amazon

Mathews, Patrick D.; Maia, Antônio Augusto Mendes; Adriano, Edson A.

doi:10.1016/j.actatropica.2016.03.016

Cited by 23 publications

(6 citation statements)

References 29 publications

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“…display a broad diversity and are widely exploited as an important source in the international aquatic pet trade, there are few studies about myxosporean infections in these smaller catfishes (Mathews et al 2017). Among approximately thirty-two species of Myxobolus described as infecting wild and farmed fish from the Amazon River basin and its main tributaries (Eiras et al 2014;Abrunhosa et al 2017;Naldoni et al 2018;Capodifoglio et al 2019), only one species was reported to infect Corydoras spp., i.e., Myxobolus niger Mathews, Maia & Adriano, 2016 described from the gill arch of C. melini Lönnberg & Rendahl, 1930(Mathews et al 2016. Our study reports, for the first time, a myxosporean species infecting C. schwartzi from the Amazon region and is hence the second to report a Myxobolus infection in Corydoras fish from South America.…”

Section: Discussionmentioning

confidence: 50%

A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil

Mathews

Madrid

Mertins

et al. 2020

EJT

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691

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A new microscopic cnidarian is described, infecting five of thirty (16.6%) specimens of Corydoras schwartzi caught in the Purus River, State of Amazonas, Brazil. Histological analysis showed that cyst development occurred in the serosa layer of the intestine. Mature myxospores are ovoid in body shape in frontal view, 22.4 ± 0.3 μm in total length and 16.3 ± 0.1 μm in width. Internally, two aubergine-shaped, elongate symmetrical polar capsules occupy more than half the length of the spore, 14.3 ± 0.2 μm in length and 6.5 ± 0.1 μm in width. Ultrastructural analysis provided evidence of five polar filament coils inside the polar capsule and binucleated sporoplasm containing a moderate number of sporoplasmosomes. The valvogenic cells abutting each other form a sutural ridge and frequently a thin layer of homogeneous material separates the cells. The outer surface of the myxospore valves is smooth, with no evidence of formation of ridges in the valves. Immature myxospores in various stages of development were observed. This study is the first report of a myxosporean parasitizing C. schwartzi and the first report of a myxosporean infection in the intestine of an ornamental fish from South America.

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Section: Discussionmentioning

confidence: 50%

A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil

Mathews

Madrid

Mertins

et al. 2020

EJT

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691

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“…n. and a congener was 13.0%, in the case of M. flavus (Table 2); increasing progressively in relation to the other Myxobolus clades that together with the morphological data presented here, support the classification of the new myxosporidean species. New microparasite species are described regularly in the Amazon region, based on histological and molecular evidence, such as the description of the morphological features of M. niger, found in the gill rake of the bandit corydoras (C. melini) by Mathews et al (2016). Rocha et al (2016) provide molecular data on Kudoa Meglitsch, 1947 found infecting the blue discus, Symphysodon aequifasciatus Pellegrin, 1904.…”

Section: Discussionmentioning

confidence: 99%

Myxobolus marajoensis sp. n. (Myxosporea: Myxobolidae), parasite of the freshwater catfish Rhamdia quelen from the Brazilian Amazon region

Abrunhosa

Sindeaux-Neto

Santos

et al. 2017

Rev. Bras. Parasitol. Vet.

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This study provides morphological and molecular data of a new parasite species found in the muscle layer of the intestinal tract of the South American silver catfish, Rhamdia quelen from Marajó Island region (Pará State, Brazil), an important fishery resource with recognized potential for fish farming. The morphology of these parasites was reanalyzed and phylogenetic analyses were run on their 18S rDNA gene sequences. The spores were morphologically distinct from those of other Myxobolus species described previously. The obtained partial sequence of the 18S rDNA gene sequences of the new species were compared to those of 24 other Myxobolus and Henneguya species available in GenBank. The results of morphological and molecular analyses indicated clearly the existence of a new species, Myxobolus marajoensis sp. n.

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“…(Henneguya melini). They describe ultrastructural aspects of other myxozoans (Myxobolus niger) (Mathews et al, 2016b). And sequence the ssrRNA of another myxosporid parasite (Myxidium amazonense) (Mathews et al, 2015).…”

Section: Some Local Literature Aboutmentioning

confidence: 99%

Call to Brazilian Ichthiopathologists – The Brazilian Ornamental Fishes Needs You!

Lauri

2022

Braz. J. Aquat. Sci. Technol.

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Since fish have potential to grow as pets in this market in Brazil it is interesting to seek another approach of investigation about the diseases that affect these animals. The Ichthiopathologist is the veterinary pathologist who is more interested or specialized at fishes. This professional can bring another look to the ornamental fish chain, since they can focus at microcosms and then make the clinical correlation. Here we list the literature you need to have to follow this profession safely and enhance the entire productive range of Brazilian ornamental fish.

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Morphological and ultrastructural aspects of Myxobolus niger n. sp. (Myxozoa) gill parasite of Corydoras melini (Siluriformes: Callichthyidae) from Brazilian Amazon

Cited by 23 publications

References 29 publications

A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil

A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil

Myxobolus marajoensis sp. n. (Myxosporea: Myxobolidae), parasite of the freshwater catfish Rhamdia quelen from the Brazilian Amazon region

Call to Brazilian Ichthiopathologists – The Brazilian Ornamental Fishes Needs You!

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