Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni
The presence and role of endoparasites in pelagic macrozooplankton within the Southern Ocean are poorly understood. Accounts of such parasites are generally restricted to the Antarctic krill species Euphausia superba , with little information on other possible host species. Endoparasitic gregarines...
Published in: | Polar Biology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer-Verlag
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1007/s00300-017-2089-0 http://ecite.utas.edu.au/123581 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:123581 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:123581 2023-05-15T13:49:03+02:00 Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni Wallis, JR Smith, AJR Kawaguchi, S 2017 https://doi.org/10.1007/s00300-017-2089-0 http://ecite.utas.edu.au/123581 en eng Springer-Verlag http://dx.doi.org/10.1007/s00300-017-2089-0 Wallis, JR and Smith, AJR and Kawaguchi, S, Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni , Polar Biology, 40, (9) pp. 1913-1917. ISSN 0722-4060 (2017) [Refereed Article] http://ecite.utas.edu.au/123581 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2017 ftunivtasecite https://doi.org/10.1007/s00300-017-2089-0 2019-12-13T22:22:15Z The presence and role of endoparasites in pelagic macrozooplankton within the Southern Ocean are poorly understood. Accounts of such parasites are generally restricted to the Antarctic krill species Euphausia superba , with little information on other possible host species. Endoparasitic gregarines were recorded for the first time in the euphausiids Euphausia triacantha and Euphausia valentini and the salp Salpa thompsoni during the Kerguelen Axis Antarctic research cruise (FebruaryMarch 2016). Gregarines found in E. triacantha and E. valentini were morphologically similar to those previously identified in Antarctic krill, E. superba . Despite overlapping distributions, the smaller euphausiid Thysanoessa macrura possessed a different gregarine endoparasite, indicating parasitehost specificity in Southern Ocean euphausiids. Most notable was the discovery of large gregarines in the stomachs of aggregate individuals of S. thompsoni . The presence of gregarines in these dominant macrozooplankton indicates that endoparasitism within the Southern Ocean is more common than previously thought. Gregarines were observed in guts of krill and salps collected between 57.9 and 63.6S. The continual presence of gregarines in the species examined indicates that these host-parasite interactions are not isolated events with differing life stages of gregarines within the same intestinal tract of some species indicating periodic infection. The impacts of gregarine parasitism on these newly identified hosts are unclear and require further investigation to understand the spatial and temporal patterns of gregarine-host interactions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Southern Ocean Thysanoessa macrura eCite UTAS (University of Tasmania) Antarctic Southern Ocean The Antarctic Kerguelen Polar Biology 40 9 1913 1917 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Wallis, JR Smith, AJR Kawaguchi, S Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni |
topic_facet |
Earth Sciences Oceanography Biological Oceanography |
description |
The presence and role of endoparasites in pelagic macrozooplankton within the Southern Ocean are poorly understood. Accounts of such parasites are generally restricted to the Antarctic krill species Euphausia superba , with little information on other possible host species. Endoparasitic gregarines were recorded for the first time in the euphausiids Euphausia triacantha and Euphausia valentini and the salp Salpa thompsoni during the Kerguelen Axis Antarctic research cruise (FebruaryMarch 2016). Gregarines found in E. triacantha and E. valentini were morphologically similar to those previously identified in Antarctic krill, E. superba . Despite overlapping distributions, the smaller euphausiid Thysanoessa macrura possessed a different gregarine endoparasite, indicating parasitehost specificity in Southern Ocean euphausiids. Most notable was the discovery of large gregarines in the stomachs of aggregate individuals of S. thompsoni . The presence of gregarines in these dominant macrozooplankton indicates that endoparasitism within the Southern Ocean is more common than previously thought. Gregarines were observed in guts of krill and salps collected between 57.9 and 63.6S. The continual presence of gregarines in the species examined indicates that these host-parasite interactions are not isolated events with differing life stages of gregarines within the same intestinal tract of some species indicating periodic infection. The impacts of gregarine parasitism on these newly identified hosts are unclear and require further investigation to understand the spatial and temporal patterns of gregarine-host interactions. |
format |
Article in Journal/Newspaper |
author |
Wallis, JR Smith, AJR Kawaguchi, S |
author_facet |
Wallis, JR Smith, AJR Kawaguchi, S |
author_sort |
Wallis, JR |
title |
Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni |
title_short |
Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni |
title_full |
Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni |
title_fullStr |
Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni |
title_full_unstemmed |
Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni |
title_sort |
discovery of gregarine parasitism in some southern ocean krill (euphausiacea) and the salp salpa thompsoni |
publisher |
Springer-Verlag |
publishDate |
2017 |
url |
https://doi.org/10.1007/s00300-017-2089-0 http://ecite.utas.edu.au/123581 |
geographic |
Antarctic Southern Ocean The Antarctic Kerguelen |
geographic_facet |
Antarctic Southern Ocean The Antarctic Kerguelen |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Southern Ocean Thysanoessa macrura |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Southern Ocean Thysanoessa macrura |
op_relation |
http://dx.doi.org/10.1007/s00300-017-2089-0 Wallis, JR and Smith, AJR and Kawaguchi, S, Discovery of gregarine parasitism in some Southern Ocean krill (Euphausiacea) and the salp Salpa thompsoni , Polar Biology, 40, (9) pp. 1913-1917. ISSN 0722-4060 (2017) [Refereed Article] http://ecite.utas.edu.au/123581 |
op_doi |
https://doi.org/10.1007/s00300-017-2089-0 |
container_title |
Polar Biology |
container_volume |
40 |
container_issue |
9 |
container_start_page |
1913 |
op_container_end_page |
1917 |
_version_ |
1766250743182917632 |