Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata

Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata

8 pages, 3 figures, 5 tables

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Bibliographic Details
Main Authors: Coma, Rafael, Zabala, Mikel, Gili, Josep Maria
Format: artículo biblioteca
Published: Inter Research 1995-02
Subjects:Gorgonians, Reproductive effort, Gonadal biomass, Intra-colomal variation, Mediterranean,
Online Access:http://hdl.handle.net/10261/183003
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spelling dig-icm-es-10261-1830032020-12-11T08:58:01Z Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata Coma, Rafael Zabala, Mikel Gili, Josep Maria Gorgonians Reproductive effort Gonadal biomass Intra-colomal variation Mediterranean 8 pages, 3 figures, 5 tables Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata was studied from 1990 to 1993 in a population dwelling at a depth of between 17 and 19 m off the Medes islands (northwestern Mediterranean). Variations in polyp fecundity with sex, polyp position within the colony, and colony size were studied, as was interannual variability. Onset of sexual maturity was on average delayed until colonies had attained a size of 20 (11 to 30) cm, i.e. an age of 13 (6 to 19) yr according to our estimates. Male and female colonies of P. clavata ripened synchronously and bore fertile polyps on nearly all branch orders. However, the percentage of fertile polyps and the number of gonads per fertile polyp decreased as branch order increased. Accordingly, reproductive effort was highest for polyps on first-order branches, which contributed 85% of the entire production of gametes. Reproductive effort increased exponentially with colony size due to increases in the percentages of fertile colonies and polyps and in the number of gonads per polyp, at least to a size of 35 cm in height. No significant interannual variation was detected over the 3 yr study period. The gorgonians present on a representative plot with a surface area of 1 m(2) produced, on average, 2 x 10(6) sperm sacs (9 g dry wt of male sex products) and 7 x 10(5) eggs (7 g dry wt of female sex products). Total reproductive effort was on the order of 9 g C m(-2) yr(-1) Peer Reviewed 2019-05-31T08:48:52Z 2019-05-31T08:48:52Z 1995-02 2019-05-31T08:48:52Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.3354/meps117185 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 117: 185-197 (1995) http://hdl.handle.net/10261/183003 10.3354/meps117185 https://doi.org/10.3354/meps117185 Sí open Inter Research
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 Gorgonians
Reproductive effort
Gonadal biomass
Intra-colomal variation
Mediterranean
Gorgonians
Reproductive effort
Gonadal biomass
Intra-colomal variation
Mediterranean
spellingShingle Gorgonians
Reproductive effort
Gonadal biomass
Intra-colomal variation
Mediterranean
Gorgonians
Reproductive effort
Gonadal biomass
Intra-colomal variation
Mediterranean
Coma, Rafael
Zabala, Mikel
Gili, Josep Maria
Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata
description 8 pages, 3 figures, 5 tables
format artículo
topic_facet Gorgonians
Reproductive effort
Gonadal biomass
Intra-colomal variation
Mediterranean
author Coma, Rafael
Zabala, Mikel
Gili, Josep Maria
author_facet Coma, Rafael
Zabala, Mikel
Gili, Josep Maria
author_sort Coma, Rafael
title Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata
title_short Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata
title_full Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata
title_fullStr Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata
title_full_unstemmed Sexual reproductive effort in the Mediterranean gorgonian Paramuricea clavata
title_sort sexual reproductive effort in the mediterranean gorgonian paramuricea clavata
publisher Inter Research
publishDate 1995-02
url http://hdl.handle.net/10261/183003
work_keys_str_mv AT comarafael sexualreproductiveeffortinthemediterraneangorgonianparamuriceaclavata
AT zabalamikel sexualreproductiveeffortinthemediterraneangorgonianparamuriceaclavata
AT gilijosepmaria sexualreproductiveeffortinthemediterraneangorgonianparamuriceaclavata
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