Rapid dispersion of escaped meagre (Argyrosomus regius) from a coastal Mediterranean fish farm

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Title: Rapid dispersion of escaped meagre (Argyrosomus regius) from a coastal Mediterranean fish farm
Authors: Arechavala-Lopez, Pablo | Uglem, Ingebrigt | Izquierdo-Gomez, David | Fernandez-Jover, Damian | Sanchez-Jerez, Pablo
Research Group/s: Biología Marina
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
Keywords: Escapes | Fish behaviour | Telemetry | Tagging | Aquaculture | Fisheries | Management
Knowledge Area: Zoología
Issue Date: Apr-2017
Publisher: John Wiley & Sons
Citation: Aquaculture Research. 2017, 48(4): 1502-1512. doi:10.1111/are.12986
Abstract: Meagre (Argyrosomus regius) is an emerging species in aquaculture considered a locally absent species in the Western Mediterranean. Little is known about meagre escape incidents from farms. To evaluate escape impacts and develop mitigation measures, knowledge about the behaviour of escaped meagre is necessary. In this study, a rapid dispersion of escaped meagre was observed following a simulated escape incident in a coastal Mediterranean farm, using acoustic telemetry (acoustic tag: AT) and mark-and-recapture techniques (external tag: ET). A small proportion of AT meagre (22.7%) remained within the farm boundaries 24 h after the simulated escape. A total of 84 meagre (9.2%) were captured by local trammel netters nearby the farm facility within the first 48 h after escape. Only two AT individuals (15.3%) were detected by acoustic receivers located in coastal areas within 2 days after dispersal from the farm and eight ET meagre (0.8%) were recaptured along the shoreline during the first week. Two AT individuals (15.3%) were considered to be dead by predation few hours after escape. The rest of the AT individuals (N = 6, 46.2%) left the facility alive, and they were never detected by receivers nor reported back by fishermen. Thus, our results highlight the necessity of establishing escape mitigation strategies at Mediterranean fish farms, i.e. recapture programmes 24–48 h after the escape incident in collaboration with local fishermen, to diminish potential impacts related to meagre escapees.
Sponsor: This study was cofounded by the European Fisheries Fund (2007-2013) and the Biodiversity Foundation as part of the Spanish Ministry of Agriculture, Food and Environment (EscaFEP: Prevención y mitigación de escapes en acuicultura).
URI: http://hdl.handle.net/10045/66471
ISSN: 1355-557X (Print) | 1365-2109 (Online)
DOI: 10.1111/are.12986
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 John Wiley & Sons Ltd
Peer Review: si
Publisher version: http://dx.doi.org/10.1111/are.12986
Appears in Collections:INV - BM - Artículos Científicos / Scientific Papers

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