Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean

Trophozoites of Ceratomyxa drepanopsettae Averintsev, 1907 (Myxosporea: Ceratomyxidae) containing prominent refractile granules were found in the gallbladders of all but one of eight halibut, the exception being a single juvenile. They ranged in shape and size from globular forms 5-10 pm in diameter...

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Main Authors: Morrison, Carol M., Martell, D. John, Leggiadro, Cynthia, O´Neil, David
Format: Other/Unknown Material
Language:English
Subjects:
Online Access:https://kramerius.lib.cas.cz/view/uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8
id ftczechacademysc:oai:kramerius.lib.cas.cz:uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8
record_format openpolar
spelling ftczechacademysc:oai:kramerius.lib.cas.cz:uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8 2024-03-17T08:59:32+00:00 Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean Morrison, Carol M. Martell, D. John Leggiadro, Cynthia O´Neil, David 20-36 22-38 print https://kramerius.lib.cas.cz/view/uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8 eng eng https://kramerius.lib.cas.cz/view/uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8 urnnbn:urn:nbn:cz:aba007-000dkx policy:public Atlantic halibut Hippoglossus hippoglossus Myxosporea Ceratomyxa drepanopsettae trophozoites sporoblast sporogenesis spore model:internalpart ftczechacademysc 2024-02-19T23:09:40Z Trophozoites of Ceratomyxa drepanopsettae Averintsev, 1907 (Myxosporea: Ceratomyxidae) containing prominent refractile granules were found in the gallbladders of all but one of eight halibut, the exception being a single juvenile. They ranged in shape and size from globular forms 5-10 pm in diameter, to rounded structures with pseudopodia and one or more processes that were up to 500 pm in length and packed with refractile granules. Some trophozoites were free in the bile, while others were attached to the epithelium of the gallbladder wall by pseudopodia which extended between the microvilli. Many free trophozoites were attached to each other by septate junctions between their pseudopodia. There were small cylindrical papillae on the surface of the trophozoites, and the rounded portions contained two vegetative nuclei, generative cells (some attached by junctions) and, in many cases, feeding vacuoles. During sporogony, a binucleate sporoplasmic cell and the capsulogenic cells of some sporoblasts were engulfed by valvogenic cells before they began to differentiate; whereas other sporoblasts consisted of six cells attached to each other, two being capsulogenic cells containing external tubes, two sporoplasmic cells and two valvogenic cells. There was a septate junction around the opening of the rounded polar capsule of the spore, between the capsulogenic and valvogenic cell. Sporoplasmosomes appeared to form in smooth membraned vesicles, possibly part of the Golgi apparatus. Spores had a thin, delicate membrane, and elongate shell-valves, most of which were asymmetric, and bent or folded. A sporo-plasm extended on either side of the distinct, straight suture line, but did not penetrate into the valves. Other/Unknown Material Northwest Atlantic Czech Academy of Sciences: dKNAV
institution Open Polar
collection Czech Academy of Sciences: dKNAV
op_collection_id ftczechacademysc
language English
topic Atlantic halibut
Hippoglossus hippoglossus
Myxosporea
Ceratomyxa drepanopsettae
trophozoites
sporoblast
sporogenesis
spore
spellingShingle Atlantic halibut
Hippoglossus hippoglossus
Myxosporea
Ceratomyxa drepanopsettae
trophozoites
sporoblast
sporogenesis
spore
Morrison, Carol M.
Martell, D. John
Leggiadro, Cynthia
O´Neil, David
Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean
topic_facet Atlantic halibut
Hippoglossus hippoglossus
Myxosporea
Ceratomyxa drepanopsettae
trophozoites
sporoblast
sporogenesis
spore
description Trophozoites of Ceratomyxa drepanopsettae Averintsev, 1907 (Myxosporea: Ceratomyxidae) containing prominent refractile granules were found in the gallbladders of all but one of eight halibut, the exception being a single juvenile. They ranged in shape and size from globular forms 5-10 pm in diameter, to rounded structures with pseudopodia and one or more processes that were up to 500 pm in length and packed with refractile granules. Some trophozoites were free in the bile, while others were attached to the epithelium of the gallbladder wall by pseudopodia which extended between the microvilli. Many free trophozoites were attached to each other by septate junctions between their pseudopodia. There were small cylindrical papillae on the surface of the trophozoites, and the rounded portions contained two vegetative nuclei, generative cells (some attached by junctions) and, in many cases, feeding vacuoles. During sporogony, a binucleate sporoplasmic cell and the capsulogenic cells of some sporoblasts were engulfed by valvogenic cells before they began to differentiate; whereas other sporoblasts consisted of six cells attached to each other, two being capsulogenic cells containing external tubes, two sporoplasmic cells and two valvogenic cells. There was a septate junction around the opening of the rounded polar capsule of the spore, between the capsulogenic and valvogenic cell. Sporoplasmosomes appeared to form in smooth membraned vesicles, possibly part of the Golgi apparatus. Spores had a thin, delicate membrane, and elongate shell-valves, most of which were asymmetric, and bent or folded. A sporo-plasm extended on either side of the distinct, straight suture line, but did not penetrate into the valves.
format Other/Unknown Material
author Morrison, Carol M.
Martell, D. John
Leggiadro, Cynthia
O´Neil, David
author_facet Morrison, Carol M.
Martell, D. John
Leggiadro, Cynthia
O´Neil, David
author_sort Morrison, Carol M.
title Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean
title_short Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean
title_full Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean
title_fullStr Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean
title_full_unstemmed Ceratomyxa drepanopsettae in the gallbladder of Atlantic halibut, Hippoglossus hippoglossus, from the northwest Atlantic Ocean
title_sort ceratomyxa drepanopsettae in the gallbladder of atlantic halibut, hippoglossus hippoglossus, from the northwest atlantic ocean
url https://kramerius.lib.cas.cz/view/uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8
op_coverage 20-36
22-38
genre Northwest Atlantic
genre_facet Northwest Atlantic
op_relation https://kramerius.lib.cas.cz/view/uuid:0ee34996-35a2-4778-a9bd-b4ddd02b64a8
urnnbn:urn:nbn:cz:aba007-000dkx
op_rights policy:public
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