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Temporal and spatial co-occurrence in spawning and larval release of Cliona viridis (Porifera: Hadromerida)

Published online by Cambridge University Press:  05 September 2001

S. Mariani ,
M.P. Piscitelli  and
M.-J. Uriz
S. Mariani
Affiliation:
Centre d'Estudis Avançats de Blanes (CSIC), Camí Sta. Bàrbara s/n, E-17300 Blanes, Spain
M.P. Piscitelli
Affiliation:
Centre d'Estudis Avançats de Blanes (CSIC), Camí Sta. Bàrbara s/n, E-17300 Blanes, Spain
M.-J. Uriz
Affiliation:
Centre d'Estudis Avançats de Blanes (CSIC), Camí Sta. Bàrbara s/n, E-17300 Blanes, Spain
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Abstract

This is the first report of egg release by the oviparous excavating sponge Cliona viridis. Adult specimens of excavating (α) and massive (β) sponge forms for the presence of oocytes were monitored from 11 May to 12 July 2000, in a shallow-rocky coast of the north-west Mediterranean. The immediate environment around the sponge was sampled for the presence of eggs. Spawning occurred synchronously in the study area at temperatures above 19°C. Oocytes were released in clusters enclosed in adhesive maternal tissue. They contained symbiotic zooxanthellae. Free, adhesive egg-masses drifted in the water or adhered to erect algae in the vicinity of the sponge. Morula stages and larval release are described.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 81 , Issue 4 , August 2001 , pp. 565 - 567
Copyright
2001 Marine Biological Association of the United Kingdom

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