Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio)
Thesis (M.Sc.)--Memorial University of Newfoundland, 1997. Biology Bibliography: leaves 69-76. Snow crabs exhibiting macroscopic evidence of Hematodinium sp. infection were collected off the east coast of Newfoundland during the period 1993 to 1996. Infected crabs were collected over a large area bu...
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ftmemorialunivdc:oai:collections.mun.ca:theses2/224744 2023-05-15T15:54:08+02:00 Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) Williams-Ryan, Kathryn Anne, 1957- Memorial University of Newfoundland. Dept. of Biology Canada--Newfoundland and Labrador 1997 ix, 79 leaves : ill. (some col.), map Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/224744 Eng eng Electronic Theses and Dissertations (8.49 MB) -- http://collections.mun.ca/PDFs/theses/Williams-Ryan_KathrynAnne.pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/224744 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Chionoecetes opilio--Parasites--Newfoundland and Labrador Dinoflagellates Text Electronic thesis or dissertation 1997 ftmemorialunivdc 2015-08-06T19:17:26Z Thesis (M.Sc.)--Memorial University of Newfoundland, 1997. Biology Bibliography: leaves 69-76. Snow crabs exhibiting macroscopic evidence of Hematodinium sp. infection were collected off the east coast of Newfoundland during the period 1993 to 1996. Infected crabs were collected over a large area but prevalence of infection was low. Pathology of the internal organs in affected crabs was observed in association with the developmental stages of Hematodinium sp. The parasite invaded hemal spaces causing disruption of normal tissue morphology, and ultimately mortality of the host. Hematodinium sp. developed through three distinct morphological stages during the progress of infection: vegetative, multinucleate prespore and dinospore. The latter is the final stage within the crab. These stages of the parasite developed synchronously and sequentially within any one crab, but might differ between individual crabs. The ultrastructure of these stages was examined using electron microscopy, which revealed the following characteristics in all developmental stages: the presence of many trichocysts, mitochondria with tubular cristae and vacuoles with lipid-like material. In the dinospore stage, flageila and micropores were observed in addition to the other common features. The morphological characteristics of Hematodinium sp. described in this investigation conform to previous descriptions of Hematodinium spp. reported from a variety of crabs inhabiting different geographic regions. Thesis Chionoecetes opilio Newfoundland studies Snow crab University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Newfoundland Canada |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Chionoecetes opilio--Parasites--Newfoundland and Labrador Dinoflagellates |
spellingShingle |
Chionoecetes opilio--Parasites--Newfoundland and Labrador Dinoflagellates Williams-Ryan, Kathryn Anne, 1957- Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) |
topic_facet |
Chionoecetes opilio--Parasites--Newfoundland and Labrador Dinoflagellates |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 1997. Biology Bibliography: leaves 69-76. Snow crabs exhibiting macroscopic evidence of Hematodinium sp. infection were collected off the east coast of Newfoundland during the period 1993 to 1996. Infected crabs were collected over a large area but prevalence of infection was low. Pathology of the internal organs in affected crabs was observed in association with the developmental stages of Hematodinium sp. The parasite invaded hemal spaces causing disruption of normal tissue morphology, and ultimately mortality of the host. Hematodinium sp. developed through three distinct morphological stages during the progress of infection: vegetative, multinucleate prespore and dinospore. The latter is the final stage within the crab. These stages of the parasite developed synchronously and sequentially within any one crab, but might differ between individual crabs. The ultrastructure of these stages was examined using electron microscopy, which revealed the following characteristics in all developmental stages: the presence of many trichocysts, mitochondria with tubular cristae and vacuoles with lipid-like material. In the dinospore stage, flageila and micropores were observed in addition to the other common features. The morphological characteristics of Hematodinium sp. described in this investigation conform to previous descriptions of Hematodinium spp. reported from a variety of crabs inhabiting different geographic regions. |
author2 |
Memorial University of Newfoundland. Dept. of Biology |
format |
Thesis |
author |
Williams-Ryan, Kathryn Anne, 1957- |
author_facet |
Williams-Ryan, Kathryn Anne, 1957- |
author_sort |
Williams-Ryan, Kathryn Anne, 1957- |
title |
Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) |
title_short |
Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) |
title_full |
Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) |
title_fullStr |
Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) |
title_full_unstemmed |
Occurrence, histopathology and fine structural studies on Hematodinium sp. (Dinoflagellida : Syndinidae) parisitizing the snow crab (Chionoecetes opilio) |
title_sort |
occurrence, histopathology and fine structural studies on hematodinium sp. (dinoflagellida : syndinidae) parisitizing the snow crab (chionoecetes opilio) |
publishDate |
1997 |
url |
http://collections.mun.ca/cdm/ref/collection/theses2/id/224744 |
op_coverage |
Canada--Newfoundland and Labrador |
geographic |
Newfoundland Canada |
geographic_facet |
Newfoundland Canada |
genre |
Chionoecetes opilio Newfoundland studies Snow crab University of Newfoundland |
genre_facet |
Chionoecetes opilio Newfoundland studies Snow crab University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (8.49 MB) -- http://collections.mun.ca/PDFs/theses/Williams-Ryan_KathrynAnne.pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/224744 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
_version_ |
1766389311268192256 |