Observations of asexual reproductive strategies in Antarctic hexactinellid sponges from ROV video records

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

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Main Authors: Teixidó, Nuria, Gili, Josep Maria, Uriz, María Jesús, Gutt, Julian, Arntz, Wolf E.
Format: artículo biblioteca
Published: Pergamon Press
Subjects:Sponges, ROV, Hexactinellida, Asexual reproduction, Antarctica,
Online Access:http://hdl.handle.net/10261/121462
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spelling dig-icm-es-10261-1214622020-12-10T07:27:21Z 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. Sponges ROV Hexactinellida Asexual reproduction Antarctica 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 2006-04 2015-08-28T06:45:42Z artículo http://purl.org/coar/resource_type/c_6501 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 10.1016/j.dsr2.2006.02.008 https://doi.org/10.1016/j.dsr2.2006.02.008 none Pergamon Press
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Sponges
ROV
Hexactinellida
Asexual reproduction
Antarctica
Sponges
ROV
Hexactinellida
Asexual reproduction
Antarctica
spellingShingle Sponges
ROV
Hexactinellida
Asexual reproduction
Antarctica
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
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
format artículo
topic_facet Sponges
ROV
Hexactinellida
Asexual reproduction
Antarctica
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
url http://hdl.handle.net/10261/121462
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