Isolation of a New Chlamydia species from the Feral Sacred Ibis (Threskiornis aethiopicus): Chlamydia ibidis

Abstract

Investigations conducted on feral African Sacred Ibises ( Threskiornis aethiopicus ) in western France led to the isolation of a strain with chlamydial genetic determinants. Ultrastructural analysis, comparative sequence analysis of the 16S rRNA gene, ompA, and of a concatenate of 31 highly conserved genes, as well as determination of the whole genome sequence confirmed the relatedness of the new isolate to members of the Chlamydiaceae, while, at the same time demonstrating a unique position outside the currently recognized species of this family. We propose to name this new chlamydial species Chlamydia ibidis .

Chlamydia abortus: New Aspects of Infectious Abortion in Sheep and Potential Risk for Pregnant Women

“…As a consequence many of the scientific community have declined use of the term Chlamydophila and have followed the concept of a one-genus, multiple species nomenclature [3], as proposed in Bergey's Manual of Systematic Bacteriology 2011 [4]. Since then, and with the identification of an increasing number of additional chlamydial species [5,6], the number of genera within the Chlamydiaceae has expanded to include Clavochlamydia [7] and Amphibiichlamydia [8,9] and a total of 15 species (Table 1).…”

Chlamydiaceae in North Atlantic Seabirds Admitted to a Wildlife Rescue Center in Western France

“…In particular, two more avian chlamydial species, C. avium and C. gallinacea (14), and one Candidatus taxon, "Candidatus Chlamydia ibidis" (15), were recently described. The diversity of chlamydial agents in birds was further extended by studies reporting mammalian chlamydiae, such as C. abortus, C. pecorum, and C. trachomatis, also being capable of infecting avian hosts (16,17).…”

“…Moreover, other Chlamydiaceae or nonclassified chlamydiae have been detected in Charadriiformes and Pelecaniformes (15,22,26). The reported prevalence of Chlamydiaceae in wild birds ranged from 1 to 74%, depending on avian hosts, the molecular tools used, and the sampling size (20,27,28).…”

Chlamydia Psittaci Strains from Broiler Chickens Induce Histopathological Lesions and Mortality in SPF Chickens

“…Sampling for C. psittaci detection and histopathology. At 2,4,6,8,10,14,17,21,24,28, and 34 d post infection (dpi), two chickens from each group were euthanized and subjected to a necropsy and gross pathological examination. The presence of C. psittaci was confirmed by examination (600×, Nikon Eclipse TE2000-E, Japan) of 5 µm thick frozen tissue sections (CM1950 cryotome; Leica Microsystems, Belgium) of the lungs, liver, and spleen using the IMAGEN TM Chlamydia immunofluorescence staining (Oxoid, United Kingdom), as previously described (20).…”

“…Recently, new Chlamydia species have been found in birds (13,16,21). In the past five years, several reports on C. psittaci infections in chickens have been published (5-7, 23, 24, 26).…”