Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations
Abstract Ciliates occur in the blowholes of marine mammals, but our understanding of their biology is poor. Consequently, we investigated an infestation of ciliates in an unhealthy, captive beluga whale that was exhibiting accelerated breathing, leukocytosis and expulsion of unusually large amounts...
Published in: | Zoological Journal of the Linnean Society |
---|---|
Main Authors: | , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1093/zoolinnean/zlaa086 https://academic.oup.com/zoolinnean/article-pdf/191/4/941/49578322/zlaa086.pdf |
id |
croxfordunivpr:10.1093/zoolinnean/zlaa086 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1093/zoolinnean/zlaa086 2024-09-15T17:59:00+00:00 Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations Jin, Didi Qu, Zhishuai Wei, Bojue Montagnes, David J S Fan, Xinpeng Chen, Xiangrui National Natural Science Foundation of China Technology Innovation Team of Ningbo 2020 http://dx.doi.org/10.1093/zoolinnean/zlaa086 https://academic.oup.com/zoolinnean/article-pdf/191/4/941/49578322/zlaa086.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights Zoological Journal of the Linnean Society volume 191, issue 4, page 941-960 ISSN 0024-4082 1096-3642 journal-article 2020 croxfordunivpr https://doi.org/10.1093/zoolinnean/zlaa086 2024-08-05T04:31:23Z Abstract Ciliates occur in the blowholes of marine mammals, but our understanding of their biology is poor. Consequently, we investigated an infestation of ciliates in an unhealthy, captive beluga whale that was exhibiting accelerated breathing, leukocytosis and expulsion of unusually large amounts of viscous sputum. This sputum contained ~104 ciliates mL-1 (when healthy, numbers were ten- to 100-fold lower). One known ciliate species, Planilamina ovata, is fully characterized, and a new species, Kyaroikeus paracetarius sp. nov., is here described. The new species is established based on its larger number of left kineties over its only congener. Sequences of small-subunit rDNA, large-subunit rDNA and ITS1-5.8S-ITS2 regions of these two taxa were used in phylogenetic analyses, inferring that Kyaroikeus and Planilamina have close affinity with the free-living family Dysteriidae, contradicting their morphology-based assignment to the family Kyaroikeidae. We suggest that Kyaroikeidae be relegated to subfamily status. Finally, by comparing parasitic species with free-living taxa, we suggest how these ciliates have adapted to their unique environment and how they may have initially invaded the host. We provide essential data and concepts for the continued evaluation of ciliate-parasites in whale blowholes. Article in Journal/Newspaper Beluga Beluga whale Beluga* Oxford University Press Zoological Journal of the Linnean Society 191 4 941 960 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract Ciliates occur in the blowholes of marine mammals, but our understanding of their biology is poor. Consequently, we investigated an infestation of ciliates in an unhealthy, captive beluga whale that was exhibiting accelerated breathing, leukocytosis and expulsion of unusually large amounts of viscous sputum. This sputum contained ~104 ciliates mL-1 (when healthy, numbers were ten- to 100-fold lower). One known ciliate species, Planilamina ovata, is fully characterized, and a new species, Kyaroikeus paracetarius sp. nov., is here described. The new species is established based on its larger number of left kineties over its only congener. Sequences of small-subunit rDNA, large-subunit rDNA and ITS1-5.8S-ITS2 regions of these two taxa were used in phylogenetic analyses, inferring that Kyaroikeus and Planilamina have close affinity with the free-living family Dysteriidae, contradicting their morphology-based assignment to the family Kyaroikeidae. We suggest that Kyaroikeidae be relegated to subfamily status. Finally, by comparing parasitic species with free-living taxa, we suggest how these ciliates have adapted to their unique environment and how they may have initially invaded the host. We provide essential data and concepts for the continued evaluation of ciliate-parasites in whale blowholes. |
author2 |
National Natural Science Foundation of China Technology Innovation Team of Ningbo |
format |
Article in Journal/Newspaper |
author |
Jin, Didi Qu, Zhishuai Wei, Bojue Montagnes, David J S Fan, Xinpeng Chen, Xiangrui |
spellingShingle |
Jin, Didi Qu, Zhishuai Wei, Bojue Montagnes, David J S Fan, Xinpeng Chen, Xiangrui Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
author_facet |
Jin, Didi Qu, Zhishuai Wei, Bojue Montagnes, David J S Fan, Xinpeng Chen, Xiangrui |
author_sort |
Jin, Didi |
title |
Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
title_short |
Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
title_full |
Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
title_fullStr |
Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
title_full_unstemmed |
Two parasitic ciliates (Protozoa: Ciliophora: Phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
title_sort |
two parasitic ciliates (protozoa: ciliophora: phyllopharyngea) isolated from respiratory-mucus of an unhealthy beluga whale: characterization, phylogeny and an assessment of morphological adaptations |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/zoolinnean/zlaa086 https://academic.oup.com/zoolinnean/article-pdf/191/4/941/49578322/zlaa086.pdf |
genre |
Beluga Beluga whale Beluga* |
genre_facet |
Beluga Beluga whale Beluga* |
op_source |
Zoological Journal of the Linnean Society volume 191, issue 4, page 941-960 ISSN 0024-4082 1096-3642 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1093/zoolinnean/zlaa086 |
container_title |
Zoological Journal of the Linnean Society |
container_volume |
191 |
container_issue |
4 |
container_start_page |
941 |
op_container_end_page |
960 |
_version_ |
1810435962848673792 |