Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records
EASIZ: Ecology of the Antarctic Sea Ice Zone, Ecology of the Antarctic Sea Ice Zone: Final Symposium, 27 September - 1 October 2004, Korcula, Croatia.-- 13 pages, 5 figures, 2 tables, 1 appendix Hexactinellid sponges are one of the structuring taxa of benthic communities on the Weddell Sea shelf (An...
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Online Access: | http://hdl.handle.net/10261/121462 https://doi.org/10.1016/j.dsr2.2006.02.008 |
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ftcsic:oai:digital.csic.es:10261/121462 2024-02-11T09:55:48+01:00 Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records Teixidó, Nuria Gili, Josep Maria Uriz, María Jesús Gutt, Julian Arntz, Wolf E. 2006-04 http://hdl.handle.net/10261/121462 https://doi.org/10.1016/j.dsr2.2006.02.008 unknown Pergamon Press https://doi.org/10.1016/j.dsr2.2006.02.008 doi:10.1016/j.dsr2.2006.02.008 issn: 0967-0645 e-issn: 1879-0100 Deep-Sea Research Part II: Topical Studies in Oceanography 53(8-10): 972-984 (2006) http://hdl.handle.net/10261/121462 none Sponges ROV Hexactinellida Asexual reproduction Antarctica artículo http://purl.org/coar/resource_type/c_6501 2006 ftcsic https://doi.org/10.1016/j.dsr2.2006.02.008 2024-01-16T10:10:14Z EASIZ: Ecology of the Antarctic Sea Ice Zone, Ecology of the Antarctic Sea Ice Zone: Final Symposium, 27 September - 1 October 2004, Korcula, Croatia.-- 13 pages, 5 figures, 2 tables, 1 appendix Hexactinellid sponges are one of the structuring taxa of benthic communities on the Weddell Sea shelf (Antarctica). However, little is known about their reproduction patterns (larval development, release, settlement, and recruitment), particularly in relation to sexual and asexual processes in sponge populations. Video stations obtained during several expeditions covering a wide depth range and different areas recorded a high frequency of asexual reproductive strategies (ARS) (bipartition and budding) among hexactinellids. Analysis of seabed video strips between 108 and 256 m depth, representing an area of 1400 m2, showed that about 28% of these sponges exhibited ARS. The Rossella nuda type dominated most of the video stations and exhibited the highest proportion of budding (35%). This proportion increased with the size class. Size class >20 cm exhibited in all the stations a mean value of 8.3±0.7 (SE) for primary and of 2.5±0.2 (SE) for secondary propagules per sponge, respectively. Results from a shallow station (Stn 059, 117 m depth) showed the highest relative abundance of R. nuda type and budding (>20 cm ∼72%, 10-20 cm ∼60%, 5-10 cm ∼12%, and <5 cm ∼3%). A potential influence of iceberg scouring disturbance on the occurrence of budding and number of propagules also was investigated. We conclude that asexual reproduction in hexactinellid sponges may be more frequent than has been thought before and it may greatly influence the genetic structure of populations. © 2006 Elsevier Ltd. All rights reserved N. Teixidó was funded by a postdoctoral fellowship of the Spanish Ministry of Science and Education (EX2004-0492) Peer Reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Iceberg* Sea ice Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic The Antarctic Weddell Weddell Sea Deep Sea Research Part II: Topical Studies in Oceanography 53 8-10 972 984 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
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Sponges ROV Hexactinellida Asexual reproduction Antarctica |
spellingShingle |
Sponges ROV Hexactinellida Asexual reproduction Antarctica Teixidó, Nuria Gili, Josep Maria Uriz, María Jesús Gutt, Julian Arntz, Wolf E. Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records |
topic_facet |
Sponges ROV Hexactinellida Asexual reproduction Antarctica |
description |
EASIZ: Ecology of the Antarctic Sea Ice Zone, Ecology of the Antarctic Sea Ice Zone: Final Symposium, 27 September - 1 October 2004, Korcula, Croatia.-- 13 pages, 5 figures, 2 tables, 1 appendix Hexactinellid sponges are one of the structuring taxa of benthic communities on the Weddell Sea shelf (Antarctica). However, little is known about their reproduction patterns (larval development, release, settlement, and recruitment), particularly in relation to sexual and asexual processes in sponge populations. Video stations obtained during several expeditions covering a wide depth range and different areas recorded a high frequency of asexual reproductive strategies (ARS) (bipartition and budding) among hexactinellids. Analysis of seabed video strips between 108 and 256 m depth, representing an area of 1400 m2, showed that about 28% of these sponges exhibited ARS. The Rossella nuda type dominated most of the video stations and exhibited the highest proportion of budding (35%). This proportion increased with the size class. Size class >20 cm exhibited in all the stations a mean value of 8.3±0.7 (SE) for primary and of 2.5±0.2 (SE) for secondary propagules per sponge, respectively. Results from a shallow station (Stn 059, 117 m depth) showed the highest relative abundance of R. nuda type and budding (>20 cm ∼72%, 10-20 cm ∼60%, 5-10 cm ∼12%, and <5 cm ∼3%). A potential influence of iceberg scouring disturbance on the occurrence of budding and number of propagules also was investigated. We conclude that asexual reproduction in hexactinellid sponges may be more frequent than has been thought before and it may greatly influence the genetic structure of populations. © 2006 Elsevier Ltd. All rights reserved N. Teixidó was funded by a postdoctoral fellowship of the Spanish Ministry of Science and Education (EX2004-0492) Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Teixidó, Nuria Gili, Josep Maria Uriz, María Jesús Gutt, Julian Arntz, Wolf E. |
author_facet |
Teixidó, Nuria Gili, Josep Maria Uriz, María Jesús Gutt, Julian Arntz, Wolf E. |
author_sort |
Teixidó, Nuria |
title |
Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records |
title_short |
Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records |
title_full |
Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records |
title_fullStr |
Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records |
title_full_unstemmed |
Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records |
title_sort |
observations of asexual reproductive strategies in antarctic hexactinellid sponges from rov video records |
publisher |
Pergamon Press |
publishDate |
2006 |
url |
http://hdl.handle.net/10261/121462 https://doi.org/10.1016/j.dsr2.2006.02.008 |
geographic |
Antarctic The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Iceberg* Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Iceberg* Sea ice Weddell Sea |
op_relation |
https://doi.org/10.1016/j.dsr2.2006.02.008 doi:10.1016/j.dsr2.2006.02.008 issn: 0967-0645 e-issn: 1879-0100 Deep-Sea Research Part II: Topical Studies in Oceanography 53(8-10): 972-984 (2006) http://hdl.handle.net/10261/121462 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.dsr2.2006.02.008 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
53 |
container_issue |
8-10 |
container_start_page |
972 |
op_container_end_page |
984 |
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1790598811620474880 |