Suitability of artisanal fishery discards as feed for juvenile tub gurnard (Chelidonichthys lucerna L.) reared in sea bottom cages in the mid Adriatic Sea

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Σημασιολογικός εμπλουτισμός/ομογενοποίηση από το EKT

2016 (EL)
Suitability of artisanal fishery discards as feed for juvenile tub gurnard (Chelidonichthys lucerna L.) reared in sea bottom cages in the mid Adriatic Sea (EN)

RONCARATI, A.
MARIOTTI, F.
FELICI, A.
MELIGRANA, M.
MELOTTI, P.

The suitability of using discards from artisanal fisheries as feed for wild-caught Chelidonichthys lucerna (L.) reared in submerged cages in the Adriatic Sea was investigated. Three-hundred juvenile tub gurnard (72.9 ± 11 g, 18 ± 1 cm) were captured and separated into four circular 35.3 m3 submerged cages. Two stocking densities were used: two cages contained 60 fish each (1.7 fish m-3; CG-L) and two cages contained 90 fish each (2.55 fish m-3; CG-H). Growth performance and survival rates were recorded over a 240 day period during which tub gurnard were fed with a variety non-target fishery discards, including common crab, sardine, Atlantic chub mackerel, anchovy, and salema. The survival rate was approximately 90% in both groups (CG-L = 91% and CG-H = 90%), with final stocking densities of 0.32 kg m-3 and 0.49 kg m-3 for the CG-L and CG-H groups, respectively. There were no significant differences in final mean body weight or length between the CG-L group (206 ± 23 g, 24.6 ± 2 cm) and the CG-H group (215.5 ± 32 g, 24.8 ± 2 cm). The condition index was similar between the two groups (1.38 and 1.42 for CG-L and CG-H, respectively). The feed conversion ratio was high in both the CG-H (2.39) and CG-L (2.32) cages. These results demonstrate that viable growth rates of tub gurnard may be obtained by feeding recycled fishery discards and rearing in cages placed on the seabed, which allows for the natural benthic behavior of this species. (EN)

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
verify an artisanal and no impact benthic cage for tub gurnard growth (EN)

sustainable culture of tub gurnard (EN)
tub gurnard, bottom cage aquaculture, feeding, fishery discards, growth, survival rate. (EN)

Ελληνικό Κέντρο Θαλασσίων Ερευνών (ΕΛΚΕΘΕ) (EL)
Hellenic Centre for Marine Research (HCMR) (EN)

Mediterranean Marine Science

2016-09-20


Hellenic Centre for Marine Research (EN)

2014-2015 (EN)
Mediterranean Sea (EN)
fish growth trial (EN)

1791-6763
1108-393X
Mediterranean Marine Science; Vol 17, No 3 (2016); 644-650 (EL)
Mediterranean Marine Science; Vol 17, No 3 (2016); 644-650 (EN)



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