Parasites causing disease in wild and cultured fish in Newfoundland
This study, based on field and laboratory observations, investigated the role of parasites as the cause of disease outbreaks and mass mortality in wild and cultured fish in Newfoundland over three decades. One ciliated protozoan, Trichodina jadranica (Ciliophora), and Loma branchialis (Microspora) w...
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ftskemman:oai:skemman.is:1946/19948 2023-05-15T14:30:12+02:00 Parasites causing disease in wild and cultured fish in Newfoundland Sjúkdómsvaldandi sníkjudýr í eldis- og villifiski á Nýfundnalandi Rasul A. Khan Landbúnaðarháskóli Íslands 2009 application/pdf http://hdl.handle.net/1946/19948 en eng http://www.landbunadur.is/landbunadur/wgsamvef.nsf/8bbba2777ac88c4000256a89000a2ddb/5d896727d2d2268500257672004c817d/$FILE/IAS%20Parasites%20causing%20disease.pdf Icelandic agricultural sciences 22, 29-35 1670-567x http://hdl.handle.net/1946/19948 Sníklar Dýrasjúkdómar Fiskar Article 2009 ftskemman 2022-12-11T06:58:39Z This study, based on field and laboratory observations, investigated the role of parasites as the cause of disease outbreaks and mass mortality in wild and cultured fish in Newfoundland over three decades. One ciliated protozoan, Trichodina jadranica (Ciliophora), and Loma branchialis (Microspora) were responsible for mass mortality of cultured fry and fingerling Atlantic cod (Gadus morhua) while a myxozoan, Tetracapsuloides bryosalmonae, and plerocercoids of a cestode, Diphyllobothrium dendriticum, caused a die-off of hatcheryreared Arctic charr (Salvelinus alpinus) and rainbow trout (Oncorhynchus mykiss) respectively after transfer to outdoor cages. A hematophagous copepod, Lernaeocera branchialis, was associated with mortality of wild Atlantic cod both in the laboratory and possibly in the field. One additional parasite, a coccidian, Goussia caseosa, caused lesions in the swim bladder of the roughhead grenadier, Macrourus berglax, a deep-sea fish. It is surmised that parasites have played a major role in mortality of both wild and cultured fish in Newfoundland. Recommendations are made to prevent potential die-offs in cultured fish. Í rannsókninni, sem byggir á rannsóknarvinnu ásamt reynslugögnum úr fiskeldinu, var kannaður hlutur sníkjudýra í sjúdómsfaröldrum og afföllum villi- og eldisfiska á Nýfundnalandi í þrjá áratugi. Tvær tegundir frumdýra (Protozoa), Trichodina jadranica (bifdýr) og Loma branchialis (Microspora), ollu stórfelldum afföllum í þorskseiðum í eldi. Eftir flutning fiska í sjókvíar, olli smásær fjölfrumungur, Tetracapsuloides bryosalmonae (Myxozoa), afföllum í bleikju (Salvelinus alpinus) og lirfustig bandormsins Diphyllobothrium dendriticum olli dauða regnbogasilunga (Oncorhyncus mykiss). Blóðsníkillinn Lernaeocera branchialis (krabbadýr) tengdist afföllum villiþorska, bæði við tilraunaaðstæður svo og í rauneldi. Auk þessa olli hnísildýrið Goussia caseosa (Coccidia) skemmdum í sundmaga snarphala(Macrourus berglax), sem er djúpsjávarfiskur. Leiddar eru líkur að því að sníkjudýr eigi stóran ... Article in Journal/Newspaper Arctic charr Arctic atlantic cod Gadus morhua Newfoundland Salvelinus alpinus Skemman (Iceland) Arctic Loma ENVELOPE(-58.983,-58.983,-62.267,-62.267) Olli ENVELOPE(23.683,23.683,67.950,67.950) |
institution |
Open Polar |
collection |
Skemman (Iceland) |
op_collection_id |
ftskemman |
language |
English |
topic |
Sníklar Dýrasjúkdómar Fiskar |
spellingShingle |
Sníklar Dýrasjúkdómar Fiskar Rasul A. Khan Parasites causing disease in wild and cultured fish in Newfoundland |
topic_facet |
Sníklar Dýrasjúkdómar Fiskar |
description |
This study, based on field and laboratory observations, investigated the role of parasites as the cause of disease outbreaks and mass mortality in wild and cultured fish in Newfoundland over three decades. One ciliated protozoan, Trichodina jadranica (Ciliophora), and Loma branchialis (Microspora) were responsible for mass mortality of cultured fry and fingerling Atlantic cod (Gadus morhua) while a myxozoan, Tetracapsuloides bryosalmonae, and plerocercoids of a cestode, Diphyllobothrium dendriticum, caused a die-off of hatcheryreared Arctic charr (Salvelinus alpinus) and rainbow trout (Oncorhynchus mykiss) respectively after transfer to outdoor cages. A hematophagous copepod, Lernaeocera branchialis, was associated with mortality of wild Atlantic cod both in the laboratory and possibly in the field. One additional parasite, a coccidian, Goussia caseosa, caused lesions in the swim bladder of the roughhead grenadier, Macrourus berglax, a deep-sea fish. It is surmised that parasites have played a major role in mortality of both wild and cultured fish in Newfoundland. Recommendations are made to prevent potential die-offs in cultured fish. Í rannsókninni, sem byggir á rannsóknarvinnu ásamt reynslugögnum úr fiskeldinu, var kannaður hlutur sníkjudýra í sjúdómsfaröldrum og afföllum villi- og eldisfiska á Nýfundnalandi í þrjá áratugi. Tvær tegundir frumdýra (Protozoa), Trichodina jadranica (bifdýr) og Loma branchialis (Microspora), ollu stórfelldum afföllum í þorskseiðum í eldi. Eftir flutning fiska í sjókvíar, olli smásær fjölfrumungur, Tetracapsuloides bryosalmonae (Myxozoa), afföllum í bleikju (Salvelinus alpinus) og lirfustig bandormsins Diphyllobothrium dendriticum olli dauða regnbogasilunga (Oncorhyncus mykiss). Blóðsníkillinn Lernaeocera branchialis (krabbadýr) tengdist afföllum villiþorska, bæði við tilraunaaðstæður svo og í rauneldi. Auk þessa olli hnísildýrið Goussia caseosa (Coccidia) skemmdum í sundmaga snarphala(Macrourus berglax), sem er djúpsjávarfiskur. Leiddar eru líkur að því að sníkjudýr eigi stóran ... |
author2 |
Landbúnaðarháskóli Íslands |
format |
Article in Journal/Newspaper |
author |
Rasul A. Khan |
author_facet |
Rasul A. Khan |
author_sort |
Rasul A. Khan |
title |
Parasites causing disease in wild and cultured fish in Newfoundland |
title_short |
Parasites causing disease in wild and cultured fish in Newfoundland |
title_full |
Parasites causing disease in wild and cultured fish in Newfoundland |
title_fullStr |
Parasites causing disease in wild and cultured fish in Newfoundland |
title_full_unstemmed |
Parasites causing disease in wild and cultured fish in Newfoundland |
title_sort |
parasites causing disease in wild and cultured fish in newfoundland |
publishDate |
2009 |
url |
http://hdl.handle.net/1946/19948 |
long_lat |
ENVELOPE(-58.983,-58.983,-62.267,-62.267) ENVELOPE(23.683,23.683,67.950,67.950) |
geographic |
Arctic Loma Olli |
geographic_facet |
Arctic Loma Olli |
genre |
Arctic charr Arctic atlantic cod Gadus morhua Newfoundland Salvelinus alpinus |
genre_facet |
Arctic charr Arctic atlantic cod Gadus morhua Newfoundland Salvelinus alpinus |
op_relation |
http://www.landbunadur.is/landbunadur/wgsamvef.nsf/8bbba2777ac88c4000256a89000a2ddb/5d896727d2d2268500257672004c817d/$FILE/IAS%20Parasites%20causing%20disease.pdf Icelandic agricultural sciences 22, 29-35 1670-567x http://hdl.handle.net/1946/19948 |
_version_ |
1766304094358601728 |