Hidden diversity and evolutionary trends in malacosporean parasites (Cnidaria: Myxozoa) identified using molecular phylogenetics

Bartošová-Sojková, Pavla; Hrabcová, Martina; Pecková, Hana; Patra, Sneha; Kodádková, Alena; Jurajda, Pavel; Tyml, Tomáš; Holzer, Astrid S.

doi:10.1016/j.ijpara.2014.04.005

Cited by 45 publications

(51 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Indeed, early reports of vermiform parasites in freshwater bryozoans, identified at the time as Buddenbrockia plumatellae, in Brazil (Marcus 1941), Japan (Oda 1980) and Turkestan (present day Kyrgyzstan; Braem 1911) provide evidence for a global distribution of malacosporeans, many of which are likely to represent new species. The detection of novel malacosporean species with our limited sampling largely within Europe (Bartošová-Sojková et al 2014;Hartikainen et al 2014) suggests that greater diversity may even be expected in relatively well-sampled regions. Furthermore, as discussed in Chap.…”

Section: Malacosporean Diversificationmentioning

confidence: 90%

“…The two forms were proposed to represent alternate morphologies that developed in different bryozoan hosts (Canning et al 2000). However, subsequent molecular phylogenetic studies (Tops et al 2005;Jiménez-Guri et al 2007;Bartošová-Sojková et al 2014;Hartikainen et al 2014) consistently separate these forms suggesting that the malacosporean infecting Cristatella mucedo is indeed a distinct species as originally described (Canning et al 1996). Recent molecular and morphological analyses show that the malacosporean clade includes parasites that develop as myxoworms (Buddenbrockia plumatellae and four undescribed species; Tops et al 2005;Hartikainen et al 2014), spherical sacs (Tetracapsuloides bryosalmonae, Buddenbrockia allmani, two undescribed Tetracapsuloides and Buddenbrockia species), oblong sacs ('Buddenbrockia plumatellae' in C. mucedo; see above), and elongate sacs with lobes (Hartikainen et al 2014).…”

Section: Malacosporean Diversificationmentioning

confidence: 95%

“…Notably, sacs and myxoworms occur across the phylogeny and morphological transitions between sac-and worm-like forms have occurred repeatedly (Hartikainen et al 2014). Further studies have discovered novel malacosporean diversity by detecting infections in fish kidney (Bartošová-Sojková et al 2014). However, whether these novel isolates from fish kidneys identify true fish hosts requires confirmation of spore development and, ideally, demonstration of transmission back to bryozoans.…”

Section: Malacosporean Diversificationmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive Radiation and Evolution Within the Myxozoa

Fiala

Bartošová-Sojková

Okamura

et al. 2015

Myxozoan Evolution, Ecology and Development

Self Cite

View full text Add to dashboard Cite

Myxozoans are endoparasites characterized by extensive morphological simplification and complex life cycles. Their definitive hosts are bryozoans-in the case of the more primitive and species-poor Malacosporea, or annelids-in the case of the more derived and speciose Myxosporea. This chapter reviews patterns of adaptive radiation within the Myxozoa and explores the drivers that may have promoted evolutionary change. Topics covered include: multiple transitions between worm-like and sac-like forms in the Malacosporea; undersampling that likely limits our appreciation of malacosporean diversity; and multiple shifts between marine and freshwater environments in the Myxosporea. We also examine morphological simplification that is observed in stages that produce spores and associated changes in the size of these sporogonic stages. This contrasts with the evolution of morphological complexity in spores. Features proposed to be involved in diversification include the acquisition of hardened spores and plasmodia, a high diversity of definitive hosts and invasion of novel hosts and host environments in the

show abstract

Section: Malacosporean Diversificationmentioning

confidence: 90%

Section: Malacosporean Diversificationmentioning

confidence: 95%

Section: Malacosporean Diversificationmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive Radiation and Evolution Within the Myxozoa

Fiala

Bartošová-Sojková

Okamura

et al. 2015

Myxozoan Evolution, Ecology and Development

Self Cite

View full text Add to dashboard Cite

show abstract

“…Alignments with other putative Tetracapsuloides species (Bartošová-Sojková et al 2014) were inspected, but no DNA isolates were available for testing with the primers developed in this study. Since the primers contain 3 to 6 mismatches to the most closely related Tetracapsuloides species (Bartošová-Sojková et al 2014), they may also amplify SSU rDNA from these species, especially in the absence of the specific target. Therefore, in environments where the fish fauna is diverse, we recommend post-qPCR sequencing to further verify results.…”

Section: Caveats and Recommendations For Future Studiesmentioning

confidence: 99%

Tetracapsuloides bryosalmonae abundance in river water

Fontes¹,

Hartikainen²,

Holland³

et al. 2017

Dis. Aquat. Org.

View full text Add to dashboard Cite

Tetracapsuloides bryosalmonae is a myxozoan parasite of freshwater bryozoans and salmonids, causing proliferative kidney disease in the latter. To date, detection of the parasite has required collection of hosts and subsequent molecular or histological examination. The release of infectious spores from both hosts offers an opportunity to detect the parasite in water samples. We developed a novel SYBR ® Green quantitative real-time PCR (qPCR) assay for T. bryosalmonae in water samples which provides an estimation of bryozoan malacospore numbers and tested the assay in 3 rivers in southern England (UK) over a period of 5 wk. The assay proved to be both highly sensitive and specific to the parasite, detecting low levels of spores throughout the study period. Larger-volume samples afforded greater detection likelihood, but did not increase the number of spores detected, possibly as a result of low and patchy spore distributions and lack of within-site replication of large-volume samples. Based on point-measurements, temperature was positively associated with the likelihood of detecting spores, possibly reflecting the temperature dependence of spore shedding from bryozoan hosts. The presence of T. bryosalmonae in water samples was predominantly influenced by spatial (sites within rivers, amongst rivers) and temporal (sampling dates) factors, while the latter also influenced quantification cycle (C q ) values and spore abundance. Environmental monitoring for infectious stages can complement traditional methods, providing faster and easier detection and avoiding potentially prolonged searching, collecting and destructive sampling of invertebrate and vertebrate hosts.

show abstract

“…All over the world, more than 2 400 myxosporean species have been reported (Bartošová-Sojková et al 2014), of which approximately 600 species have been reported from China (Chen and Ma 1998, Zhang et al 2013, Eiras et al 2014. Although most of the species do not cause severe diseases, some species have been reported as pathogenic species resulting in mass mortalities or economic losses of cultured and wild fishes in China (Zhang et al 2010, Liu et al 2012, Yuan et al 2015, Zhai et al 2016.…”

mentioning

confidence: 99%

Histopathological and ultrastructural studies of Myxobolus turpisrotundus from allogynogenetic gibel carp Carassius auratus gibelio in China

Guo

Zhai

et al. 2016

FOLIA PARASIT

View full text Add to dashboard Cite

Abstract:During an ongoing systematic survey on species diversity of myxozoans parasitising allogynogenetic gibel carp Carassius auratus gibelio (Bloch) in China, plasmodia were detected in the fins, lip, jaw, gill chamber, gill arches, operculum and oral cavity of infected fish. Combining the morphological and molecular data, the present species was identified as Myxobolus turpisrotundus Zhang, Wang, Li et Gong, 2010. Histopathological examination revealed that despite infecting different organs, M. turpisrotundus always occurred in dermis, demonstrating its affinity to this tissue. Histopathological effect of M. turpisrotundus on the host is relatively mild except parasites in the gill arches producing compression of the adipose tissue and heavy adductor muscles deformation with lymphohistiocytic infiltrates. In addition, the plasmodia in different sites were with the same complex structure arrangement: cup-like cells with unknown derivation, a thin collagenous fibril layer, areolar connective tissue, basement membrane and host epithelial cell. Ultrastructural analysis showed that the parasite has monosporic pansporoblast and sporogenesis followed the usual pattern of most of the myxosporeans.

show abstract

Hidden diversity and evolutionary trends in malacosporean parasites (Cnidaria: Myxozoa) identified using molecular phylogenetics

Cited by 45 publications

References 59 publications

Adaptive Radiation and Evolution Within the Myxozoa

Adaptive Radiation and Evolution Within the Myxozoa

Tetracapsuloides bryosalmonae abundance in river water

Histopathological and ultrastructural studies of Myxobolus turpisrotundus from allogynogenetic gibel carp Carassius auratus gibelio in China

Contact Info

Product

Resources

About