<i>Endolimax kueneni</i> n.sp., Parasitic in the Intestinal Tract of the Monkey <i>Macacus cynomolgus</i>

Brug, S. L.

doi:10.1017/s0031182000014360

Cited by 5 publications

(4 citation statements)

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“…Iodamoeba and Endolimax are also endocommensal or facultative parasitic organisms in the intestinal tract of other vertebrates. Species of Endolimax have been reported for a variety of vertebrate hosts [ 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. Although most of them are considered endocommensals, some of them are pathogenic.…”

Section: Diseases Caused By Amoebae In Human and Veterinary Medicinementioning

confidence: 99%

Diseases Caused by Amoebae in Fish: An Overview

Padrós

Constenla

2021

Animals

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Parasitic and amphizoic amoebae are ubiquitous and can affect a huge variety of hosts, from invertebrates to humans, and fish are not an exception. Most of the relationships between amoebae and fish are based on four different types: ectocommensals, ectoparasites, endocommensals and endoparasites, although the lines between them are not always clear. As ectocommensals, they are located specially on the gills and particularly the amphizoic Neoparamoeba perurans is the most relevant species, being a real pathogenic parasite in farmed salmon. It causes amoebic gill disease, which causes a progressive hyperplasia of epithelial cells in the gill filaments and lamellae. Nodular gill disease is its analogue in freshwater fish but the causative agent is still not clear, although several amoebae have been identified associated to the lesions. Other species have been described in different fish species, affecting not only gills but also other organs, even internal ones. In some cases, species of the genera Naegleria or Acanthamoeba, which also contain pathogenic species affecting humans, are usually described affecting freshwater fish species. As endocommensals, Entamoebae species have been described in the digestive tract of freshwater and marine fish species, but Endolimax nana can reach other organs and cause systemic infections in farmed Solea senegalensis. Other systemic infections caused by amoebae are usually described in wild fish, although in most cases these are isolated cases without clinical signs or significance.

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Section: Diseases Caused By Amoebae In Human and Veterinary Medicinementioning

confidence: 99%

Diseases Caused by Amoebae in Fish: An Overview

Padrós

Constenla

2021

Animals

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“…How this hyper-parasite is distributed from cyst to cyst without affecting the trophic forms of Iodamoeba we do not know. There are two possibilities, viz., (1) in the trophic cytoplasm the body of the hyper-parasite remained undetectable by the techniques employed by us and became apparent only when the physiological state of the host cytoplasm switched over to accumulating glycogen; or ( 2 ) spores of the hyper-parasite had a direct entry into the cyst cytoplasm. However, this point can only be settled by further investigation.…”

Section: Discussionmentioning

confidence: 94%

“…1961 Attention was niainly focused on cysts of Iodanioeba containing "inclusion" bodies. Brug ( 2) in 1920 was the first to notice dark areas in the cytoplasm of cysts of Zodamoeba bzietschlii (syn. Endoliniax kueneni) from a cynomolgus monkey (Macaca irus).…”

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A Hyper‐Parasite of Iodamoeba buetschlii from the Rhesus Monkey, Macaca mulatta, and the Domestic Pig

Ray¹,

Banik²

1965

The Journal of Protozoology

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SYNOPSIS. So called “inclusion” bodies in the cytoplasm of Iodamorba biretschlii cysts from rhesus monkeys (Mocaca mulatta) and domestic pips appeared to be hyper‐parasites of unknown taxonomic position (posubly a protozoon or a fungus), They had a dot‐like Feulgen‐positive nucleus, cytoplasmic alkaline phosphatase, periodic acid Schiff ‐positive material, and proteins reacting to the bromophenol blue test. Their nuclei appeared to divide by budding and ultimately to produce six to eight minute, round or oval spore‐like bodies. The Iodamoeba cysts mntaining these bodies had highly vacuolated cytoplasm, suggesting that the hyper‐parasites had a degenerating effect on their host.

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“…). They have been reported from multiple vertebrate hosts (Wenyon & O'Connor ; Brug ; Chiang ; Hegner ; McFall ; Lucas ; Gutierrez–Ballesteros & Wenrich ) and even from invertebrates (e.g. Kirby ).…”

Section: Discussionmentioning

confidence: 99%

Endolimax piscium sp. nov. (Amoebozoa), causative agent of systemic granulomatous disease of cultured sole, Solea senegalensis Kaup

Constenla

Padrós

Palenzuela

2013

Journal of Fish Diseases

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A new amoeba species pathogenic for Senegalese sole is described based on ultrastructural analysis and SSU rDNA phylogenetic inference. The parasite presents round to ovoid trophozoites (<5 μm) with a high degree of intracellular simplification. No mitochondria were observed, but mitosome‐like organelles were present. No cysts could be detected. Phylogenetic analysis confirmed the Senegalese sole parasite as an amitochondriate Archamoeba related to Endolimax nana and Iodamoeba spp., and we tentatively describe it as a new species in the genus Endolimax, Endolimax piscium. However, the genetic distance with E. nana is quite large, with only 60% pairwise identity between both SSU rDNA genotypes. Although the overall topology of the Archamoebae cladograms containing E. piscium was consistent, the support for the branching of Endolimax spp. relative to its closest neighbours was variable, being higher with distance or parsimony‐based inference methods than with ML or Bayesian trees. The use of stringent alignment sampling masks also caused instability and reduced support for some branches, including the monophyly of Endolimax spp. in the most conservative data sets. The characterization of other Archamoebae parasitizing fish could help to clarify the status of E. piscium and to interpret the large genetic distance observed between Endolimax species.

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Endolimax kueneni n.sp., Parasitic in the Intestinal Tract of the Monkey Macacus cynomolgus

Cited by 5 publications

References 0 publications

Diseases Caused by Amoebae in Fish: An Overview

Diseases Caused by Amoebae in Fish: An Overview

A Hyper‐Parasite of Iodamoeba buetschlii from the Rhesus Monkey, Macaca mulatta, and the Domestic Pig

Endolimax piscium sp. nov. (Amoebozoa), causative agent of systemic granulomatous disease of cultured sole, Solea senegalensis Kaup

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