Filiciotto, Francesco and Di Stefano, Vincenzo and Buffa, Gaspare and Maccarrone, Vincenzo and Mazzola, Salvatore and Buscaino, Giuseppa (2013) Effects of offshore and onshore aquaculture ambient noise on Sparus aurata juveniles. Technical Report. IAMC, Capo Granitola.
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Abstract
The present study evaluated the impact of sea background noise (the acoustic environment of the offshore aquaculture system) and onshore aquaculture system's ambient noise on welfare of gilthead sea bream juveniles (Sparus aurata). In particular primary, secondary (biochemical and haematological indexes) and tertiary (growth performances) stress responses were evaluated. The experiment lasted 120 days during which two different playlists of acoustic stimuli were projected inside six experimental tanks (each condition was replicated in three tanks). Offshore aquaculture noise conditions were recreated as the typical acoustic field in proximity of an offshore sea cage for fish farming using a random sequence of quiet sea background and boat noises. The acoustic field inside an onshore open concrete tank for fish farming represented the onshore aquaculture noise conditions. The other three tanks were used as a control condition without acoustic projection. The weights and lengths of fish exposed to offshore aquaculture noise were higher than the specimens in the control and onshore aquaculture groups. Moreover, higher levels of serum cortisol, glucose, red blood cell count, haematocrit value and haemoglobin content and lower levels of white blood cells were recorded in fish groups from the control and onshore treatments. Reactive Oxygen Metabolites (ROMs) and Total Antioxidant Capacity (TACs) of fish exposed to the boat acoustic condition after 40 days showed a significant increase compared to those of fish of control group. After 80 days lower values of TACs were recorded in the boat acoustic condition compared to control and on-shore aquaculture acoustic condition. These results allow us to hypothesise that offshore aquaculture noise and the sea soundscape in particular positively influence growth performance and could reduce stress and improve the welfare of the sea bream.
| Item Type: | Monograph (Technical Report) |
|---|---|
| Additional Information: | Others Partecipants and Role Ginevra Boldrocchi, Paolo Angileri and Maria Ceraulo as Field Assistants |
| Subjects: | 500 Scienze naturali e Matematica > 570 Scienze della vita; Biologia > 571 Fisiologia e soggetti connessi (Classificare qui le opere d'insieme sui processi biologici interni) > 571.1 Animali (Classificare qui la Fisiologia comparata) 500 Scienze naturali e Matematica > 570 Scienze della vita; Biologia > 572 Biochimica (Classificare qui la Citochimica, l'Istochimica, le opere d'insieme su Biochimica e Biofisica; le opere interdisciplinari sulle sostanze biochimiche, sulle macromolecole) 500 Scienze naturali e Matematica > 570 Scienze della vita; Biologia > 577 Ecologia |
| Depositing User: | Dr. Francesco Filiciotto |
| Date Deposited: | 19 May 2014 07:16 |
| Last Modified: | 19 May 2014 07:16 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/9236 |
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