Preprint volume - SIBM

Pre-print Volume –Posters
NECTON AND FISHERY COMMITEE
listed fish assemblage during at least half century, allow us to indicate such assemblage
as a safety system against jellyfish blooms.
Tab. 1 – Medusivorous fishes in the Mediterranean (*alien fish of occasional presence).
Pesci medusivori del Mediterraneo (*pesci alieni di presenza occasionale).
Condrichthyes 1 Squalus acanthias Osteichthyes 12 Scomberesox saurus
2 Etmopterus spinax 13 Boops boops
3 Centroscymnus coelolepis 14 Oblada melanura
Osteichthyes 4 Alepocephalus rostratus 15 Trachurus trachurus
5 Luvarus imperialis 16 Scomber colias
6 Centrolophus niger 17 Scomber scombrus
7* Hyperoglyphe perciformis 18 Mola mola
8 Schedophilus medusophagus 19 Coryphaena hippurus
9 Psenes pellucidus 20 Sparus aurata
10 Cubiceps gracilis 21 Stromateus fiatola
11* Cubiceps capensis 22 Ranzania laevis
During recent blooms of Pelagia noctiluca, one of the most studied jellyfish in the
world, also on the basis of a two centuries time series (Goy et al., 1989), some of the
listed fish species (Tab. 1; numbers 6, 8, 14, 15, 16) showed evident signs of the
massive consume of P. noctiluca, having the gut coloured by the jellyfish pigments
(Avian and Rottini Sandrini, 1988; Orsi Relini et al., 2010a; Garibaldi & Orsi Relini,
2010). Such observation occurred by chance, in the framework of routine biological
sampling (CAMPBIOL) and/or fish purchase for personal use. Having not planned
such observations, we don’t know if other fish species had the same behaviour. There
is a large amount of work for the next jellyfish bloom, in particular regarding
specificity, if any, of jellyfish consume.
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