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Life cycle of the jellyfish Rhizostoma pulmo (Scyphozoa: Rhizostomeae) and its distribution, seasonality and inter-annual variability along the Catalan coast and the Mar Menor (Spain, NW Mediterranean)

AuthorsFuentes, Veronica ; Straehler-Pohl, Ilka; Atienza, Dacha ; Franco, Ignacio; Tilves, Uxue ; Gentile, Miriam ; Acevedo, Melissa ; Olariaga, Alejandro ; Gili, Josep Maria
Issue DateOct-2011
CitationMarine Biology 158 (10): 2247-2266 (2011)
AbstractRhizostoma pulmo is one of the most abundant scyphomedusae along the Mediterranean coasts. To understand changes in the population densities of the medusa stage and its relationship with the benthic stage, we describe all developmental stages from the life cycle of R. pulmo, from the scyphistoma stage to young medusae reared in the laboratory. Mature scyphistomae showed a mean total body length of 1.7 mm and the average tentacle number was 16. Asexual reproduction occurred by lateral budding, podocyst and pedalocyst production. Each strobila released up to 8 ephyrae that had a mean total body diameter of 3.5 mm. Moreover, we also present data on the temporal and spatial distribution of the species in the Catalan Sea and the coastal lagoon on Mar Menor (NW Mediterranean) during the years 2007–2009. In the Catalan Sea, the presence of adult R. pulmo was recorded as extended along the whole coast, but most of the observation was concentrated in the central area; the highest abundances were recorded during the months of July and August. The highest number of observations was detected in 2008 in coincidence with the inter-annual variation observed in the Mar Menor lagoon.
Description20 pages, 8 figures, 5 tables
Publisher version (URL)http://dx.doi.org/10.1007/s00227-011-1730-7
Appears in Collections:(ICM) Artículos
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