Detection of a novel Chlamydia species in captive spur-thighed tortoises (Testudo graeca) in southeastern Spain and proposal of Candidatus Chlamydia testudinis

Laroucau, Karine; Ortega, Nieves; Vorimore, F.; Aaziz, Rachid; Mitura, Agata; Szymańska-Czerwińska, Monika; Cicerol, M.; Salinas, J.; Sachse, Konrad; Caro, M.R.

doi:10.1016/j.syapm.2020.126071

Cited by 37 publications

(33 citation statements)

References 35 publications

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“…Possibly, the spectrum of chlamydial species in amphibians is like in reptiles more diverse than known so far. There are other phylogenetically related, recently described reptilian taxa like C. serpentis and Candidatus C. testudinis, C. corallus and C. sanzinia which represent uncultivable or difficult to culture chlamydia (Laroucau et al 2020;Staub et al 2018;Taylor-Brown et al 2016. In this context, the present report elucidates the importance of including routine testing on Chlamydia in amphibians.…”

Section: Discussionmentioning

confidence: 56%

Chronic wasting associated with Chlamydia pneumoniae in three ex situ breeding facilities for tropical frogs

Eisenberg

Fawzy

Kaim

et al. 2020

Antonie van Leeuwenhoek

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A number of different Chlamydia spp. have been detected in the class Amphibia with C. pneumoniae being the predominant species involved. Chlamydiae have been linked to mass mortality events, thereby representing significant pathogens that deserve attention with respect to worldwide amphibian decline. We here present six cases of chlamydiosis and asymptomatic chlamydial infections in different frog species from three ex situ amphibian conservation facilities. Clinical signs predominantly characterised by regurgitation, chronic wasting, lethargy and suspended breeding were associated with C. pneumoniae infection. Despite various treatment regimens, it was not possible to clear infections. However, intra vitam diagnostics succeeded from skin, faeces and urine for the first time.

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Section: Discussionmentioning

confidence: 56%

Chronic wasting associated with Chlamydia pneumoniae in three ex situ breeding facilities for tropical frogs

Eisenberg

Fawzy

Kaim

et al. 2020

Antonie van Leeuwenhoek

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“…The gene order is highly conserved outside the region of extensive variation between chlamydial genomes located near the replication terminus commonly called the plasticity zone (PZ) (2,45,51). The PZs have been described in all the genomes of Chlamydia species identified to date and usually range from ~12 kbp to ~86 kbp, with 11 to 48 genes (2,36,37,45,68,77,80,84). Despite the intracellular parasitism of Chlamydia spp., the bacteria have avoided the accumulation of harmful mutations leading to genome degradation as has occurred in many parasitic bacteria.…”

Section: Genome Structurementioning

confidence: 99%

“…Lack of certain genes encoding key enzymes of the metabolic pathways results in the high dependence of Chlamydia on host cells, from which they draw amino acids, nucleotides and cofactors (8). Genome reduction allows significant phenotypic variation; so far 18 species with a wide range of tissue and host tropism have been identified (6,36,37,56,68,77,80,84). It should be added that the number of new taxa is constantly increasing as well as the range of hosts which can provide them with a suitable environment.…”

Section: Genome Structurementioning

confidence: 99%

“…C. sanzinia, and Cand. C. testudinis (6,36,37,56,68,77,80,84). Until recently, it was thought that no plasmid existed in the C. abortus genome (47,70), but surprisingly, the genomes of the recently described avian strains have a plasmid homologous to that found in C. psittaci (75,88).…”

Section: Genome Structurementioning

confidence: 99%

“…The last decade's investigation of Chlamydia concerned new taxa discovered mainly in wild animals (36,37,68,77,80,84). It seems that wildlife has become an excellent niche for the development of Chlamydia.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Chlamydiae – what’s new?

Zaręba-Marchewka¹,

Szymańska-Czerwińska

Niemczuk

2020

Journal of Veterinary Research

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This paper provides an overview of the current knowledge of chlamydiae. These intracellular microorganisms belonging to the Chlamydiaceae family are widely distributed throughout the world. Constant development of culture-independent approaches for characterisation of microbial genomes enables new discoveries in the field of Chlamydia. The number of new taxa is continuously increasing as well as the range of hosts. New species and genotypes are constantly being discovered, particularly new avian and reptilian agents, which are discussed in this article. Interestingly, wild animals are the main hosts for new Chlamydia species including different species of bird, turtle and snake. The availability of next-generation sequencing opens up a new prospect for research and leads to deeper knowledge of these interesting microorganisms about which much is still to discover.

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Tortoise health. Part 2: common clinical conditions

Kubiak

2024

In Practice

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Background: This is the second article in a two‐part series on tortoise health, and focuses on two areas of significant clinical concern: reproductive and respiratory diseases. Although both common, the clinical presentation of these conditions in tortoises varies greatly from that of more familiar domestic mammal patients. The first part of the series was published in the January/February 2024 issue of In Practice and covered husbandry and husbandry‐related diseases.Aim of the article: This article outlines further clinical conditions commonly seen in captive tortoises and their aetiopathogenesis, diagnosis and management. Euthanasia technique is also discussed and is a procedure which is possible to be carried out in any veterinary clinic where welfare of a tortoise is significantly compromised.

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Detection of a novel Chlamydia species in captive spur-thighed tortoises (Testudo graeca) in southeastern Spain and proposal of Candidatus Chlamydia testudinis

Cited by 37 publications

References 35 publications

Chronic wasting associated with Chlamydia pneumoniae in three ex situ breeding facilities for tropical frogs

Chronic wasting associated with Chlamydia pneumoniae in three ex situ breeding facilities for tropical frogs

Chlamydiae – what’s new?

Tortoise health. Part 2: common clinical conditions

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