NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES
Patterns of nucleolar organiser region (NOR) variation were studied in the oysters (Bivalvia: Ostreidae) Crassostrea gigas (Thunberg) and Ostrea edulis L. Comparison of the pattern of NORs within and between C. gigas, O. edulis and Ostrea denselamellosa Lischke (data after Insua & Thiriot-Quievr...
Published in: | Journal of Experimental Marine Biology and Ecology |
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1992
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Online Access: | https://hal.science/hal-03476520 https://doi.org/10.1016/0022-0981(92)90072-I |
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ftsorbonneuniv:oai:HAL:hal-03476520v1 2023-06-11T04:11:09+02:00 NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES Thiriotquievreux, C Insua, A Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 1992 https://hal.science/hal-03476520 https://doi.org/10.1016/0022-0981(92)90072-I en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0981(92)90072-I hal-03476520 https://hal.science/hal-03476520 doi:10.1016/0022-0981(92)90072-I Journal of Experimental Marine Biology and Ecology https://hal.science/hal-03476520 Journal of Experimental Marine Biology and Ecology, 1992, 157 (1), pp.33-40. ⟨10.1016/0022-0981(92)90072-I⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 1992 ftsorbonneuniv https://doi.org/10.1016/0022-0981(92)90072-I 2023-05-29T19:08:41Z Patterns of nucleolar organiser region (NOR) variation were studied in the oysters (Bivalvia: Ostreidae) Crassostrea gigas (Thunberg) and Ostrea edulis L. Comparison of the pattern of NORs within and between C. gigas, O. edulis and Ostrea denselamellosa Lischke (data after Insua & Thiriot-Quievreux, 1991) indicates that: (i) the chromosomal locations of the Ag-NORs were terminal on metacentrics for C. gigas and O. denselamellosa but on the long arms of submetacentrics for O. edulis; (II) the position of NORs within karyotypes showed a specific pattern: pair 10 for C. gigas, pairs 9 and 10 for O. edulis, and pairs 3 and 8 for O. denselamellosa. Thus, interspecies heteromorphisms detected in this study included the number of Ag-stained NORs per genome, their chromosomal location and their position within karyotypes, Intraspecific variations or heteromorphisms were also detected within the three species investigated but at different degrees. C. gigas displayed a consistent number of homologous NOR chromosomes but a heteromorphism for NOR size. O. edulis and O. denselamellosa were characterized by a strong heteromorphism involving the apparent number of NOR sites per cell. Article in Journal/Newspaper Crassostrea gigas HAL Sorbonne Université Journal of Experimental Marine Biology and Ecology 157 1 33 40 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Thiriotquievreux, C Insua, A NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
Patterns of nucleolar organiser region (NOR) variation were studied in the oysters (Bivalvia: Ostreidae) Crassostrea gigas (Thunberg) and Ostrea edulis L. Comparison of the pattern of NORs within and between C. gigas, O. edulis and Ostrea denselamellosa Lischke (data after Insua & Thiriot-Quievreux, 1991) indicates that: (i) the chromosomal locations of the Ag-NORs were terminal on metacentrics for C. gigas and O. denselamellosa but on the long arms of submetacentrics for O. edulis; (II) the position of NORs within karyotypes showed a specific pattern: pair 10 for C. gigas, pairs 9 and 10 for O. edulis, and pairs 3 and 8 for O. denselamellosa. Thus, interspecies heteromorphisms detected in this study included the number of Ag-stained NORs per genome, their chromosomal location and their position within karyotypes, Intraspecific variations or heteromorphisms were also detected within the three species investigated but at different degrees. C. gigas displayed a consistent number of homologous NOR chromosomes but a heteromorphism for NOR size. O. edulis and O. denselamellosa were characterized by a strong heteromorphism involving the apparent number of NOR sites per cell. |
author2 |
Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Thiriotquievreux, C Insua, A |
author_facet |
Thiriotquievreux, C Insua, A |
author_sort |
Thiriotquievreux, C |
title |
NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES |
title_short |
NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES |
title_full |
NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES |
title_fullStr |
NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES |
title_full_unstemmed |
NUCLEOLAR ORGANIZER REGION VARIATION IN THE CHROMOSOMES OF 3 OYSTER SPECIES |
title_sort |
nucleolar organizer region variation in the chromosomes of 3 oyster species |
publisher |
HAL CCSD |
publishDate |
1992 |
url |
https://hal.science/hal-03476520 https://doi.org/10.1016/0022-0981(92)90072-I |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Journal of Experimental Marine Biology and Ecology https://hal.science/hal-03476520 Journal of Experimental Marine Biology and Ecology, 1992, 157 (1), pp.33-40. ⟨10.1016/0022-0981(92)90072-I⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0981(92)90072-I hal-03476520 https://hal.science/hal-03476520 doi:10.1016/0022-0981(92)90072-I |
op_doi |
https://doi.org/10.1016/0022-0981(92)90072-I |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
157 |
container_issue |
1 |
container_start_page |
33 |
op_container_end_page |
40 |
_version_ |
1768386028746309632 |