Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study
Lymphomyeloid organs of two common spe- cies of Antarctic fish, Trematomus nicolai and Chiono- draco hamatus, were studied with the aim of analysing some morphological aspects of these organs in relation to adaptation to low environmental temperature. The thymuses of T. nicolai and C. hamatus were f...
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Online Access: | http://hdl.handle.net/11392/1196763 https://doi.org/10.1007/s003000050451 |
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ftunivferrarair:oai:sfera.unife.it:11392/1196763 2024-09-09T19:09:48+00:00 Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study ROMANO N CECCARIGLIA S MAZZINI M MASTROLIA L. ABELLI, Luigi Romano, N Ceccariglia, S Abelli, Luigi Mazzini, M Mastrolia, L. 2000 STAMPA http://hdl.handle.net/11392/1196763 https://doi.org/10.1007/s003000050451 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000087048700003 volume:23 issue:5 firstpage:321 lastpage:328 journal:POLAR BIOLOGY http://hdl.handle.net/11392/1196763 doi:10.1007/s003000050451 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0034021036 info:eu-repo/semantics/article 2000 ftunivferrarair https://doi.org/10.1007/s003000050451 2024-06-19T13:25:44Z Lymphomyeloid organs of two common spe- cies of Antarctic fish, Trematomus nicolai and Chiono- draco hamatus, were studied with the aim of analysing some morphological aspects of these organs in relation to adaptation to low environmental temperature. The thymuses of T. nicolai and C. hamatus were flattened, incompletely lobated, with numerous Hassall-like bod- ies, which were mainly located in the central part of the organ in C. hamatus. In T. nicolai, thymocytes, erythroid and reticular epithelial cells filled the organ. In C. hamatus, the thymocytes intermingled with reticular epithelial cells were often close to groups of melano- macrophages. In both species, the thymus did not show distinct compartmentalisation; however, the thymocytes had significantly different sizes in the outer and inner portions of the thymus. The head kidney of both species was completely filled by haematopoietic tissue, highly vascularised and mainly lymphopoietic in T. nicolai, while both erythropoietic and lymphopoietic in C. hamatus. The spleen appeared mainly erythropoietic in T. nicolai and mainly lymphopoietic in C. hamatus. Solitary melano-macrophages in T. nicolai were close to numerous small vascular ellipsoids where erythroid and lymphoid cells were intermingled without the formation of red and white pulp areas. In C. hamatus, large lym- phoid areas were organised around the capillaries. The possible adaptation of lymphoid organs to the low temperature of polar water is discussed. Article in Journal/Newspaper Antarc* Antarctic Università degli Studi di Ferrara: CINECA IRIS Antarctic The Antarctic Polar Biology 23 5 321 328 |
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Open Polar |
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Università degli Studi di Ferrara: CINECA IRIS |
op_collection_id |
ftunivferrarair |
language |
English |
description |
Lymphomyeloid organs of two common spe- cies of Antarctic fish, Trematomus nicolai and Chiono- draco hamatus, were studied with the aim of analysing some morphological aspects of these organs in relation to adaptation to low environmental temperature. The thymuses of T. nicolai and C. hamatus were flattened, incompletely lobated, with numerous Hassall-like bod- ies, which were mainly located in the central part of the organ in C. hamatus. In T. nicolai, thymocytes, erythroid and reticular epithelial cells filled the organ. In C. hamatus, the thymocytes intermingled with reticular epithelial cells were often close to groups of melano- macrophages. In both species, the thymus did not show distinct compartmentalisation; however, the thymocytes had significantly different sizes in the outer and inner portions of the thymus. The head kidney of both species was completely filled by haematopoietic tissue, highly vascularised and mainly lymphopoietic in T. nicolai, while both erythropoietic and lymphopoietic in C. hamatus. The spleen appeared mainly erythropoietic in T. nicolai and mainly lymphopoietic in C. hamatus. Solitary melano-macrophages in T. nicolai were close to numerous small vascular ellipsoids where erythroid and lymphoid cells were intermingled without the formation of red and white pulp areas. In C. hamatus, large lym- phoid areas were organised around the capillaries. The possible adaptation of lymphoid organs to the low temperature of polar water is discussed. |
author2 |
Romano, N Ceccariglia, S Abelli, Luigi Mazzini, M Mastrolia, L. |
format |
Article in Journal/Newspaper |
author |
ROMANO N CECCARIGLIA S MAZZINI M MASTROLIA L. ABELLI, Luigi |
spellingShingle |
ROMANO N CECCARIGLIA S MAZZINI M MASTROLIA L. ABELLI, Luigi Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study |
author_facet |
ROMANO N CECCARIGLIA S MAZZINI M MASTROLIA L. ABELLI, Luigi |
author_sort |
ROMANO N |
title |
Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study |
title_short |
Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study |
title_full |
Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study |
title_fullStr |
Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study |
title_full_unstemmed |
Lymphomyeloid organs of the Antarctic fish Trematomus nicolai and Chionodraco hamatus (Teleostei: Notothenioidea): A comparative histological study |
title_sort |
lymphomyeloid organs of the antarctic fish trematomus nicolai and chionodraco hamatus (teleostei: notothenioidea): a comparative histological study |
publishDate |
2000 |
url |
http://hdl.handle.net/11392/1196763 https://doi.org/10.1007/s003000050451 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000087048700003 volume:23 issue:5 firstpage:321 lastpage:328 journal:POLAR BIOLOGY http://hdl.handle.net/11392/1196763 doi:10.1007/s003000050451 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0034021036 |
op_doi |
https://doi.org/10.1007/s003000050451 |
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Polar Biology |
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23 |
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5 |
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321 |
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328 |
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