Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25170
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Validation of a vigour index for trawl-caught Norway lobsters (Nephrops norvegicus) destined for the live market: underlying links to both physiological condition and survivability
Authors: Albalat, Amaya
Sinclair, Simon
Neil, Douglas M
Contact Email: amaya.albalat@stir.ac.uk
Keywords: Norway lobster
Nephrops norvegicus
live transport
vigour, physiology
mortality
Issue Date: Jul-2017
Citation: Albalat A, Sinclair S & Neil DM (2017) Validation of a vigour index for trawl-caught Norway lobsters (Nephrops norvegicus) destined for the live market: underlying links to both physiological condition and survivability, Fisheries Research, 191, pp. 25-29.
Abstract: Recent improved practices in the trawl fishery of Norway lobsters ( Nephrops norvegicus) have made it possible to increase the proportion of these trawl-caught lobsters that can be transported alive successfully. A major contributor to this has been the introduction of on-board seawater tanks, which allow for the recovery of animals immediately after they have been landed from the net. In this study, we have validated a vigour index that could be used both by by fisheries scientists and the industry dealing with live-traded Nephrops to screen out the proportion of trawl-caught lobsters that nevertheless fail to recover following capture and are not in a condition to survive live transportation. Results indicate that the process of visual selection into one of four possible vigour categories reflects with good accuracy the underlying physiological state of the animals, as assessed by the level of adenylate 5’ -triphosphate (ATP) in the tail muscles, by the proportions of other nucleotides as expressed in the Adenylate Energy Charge (AEC), and by the amount of intra-muscular L-lactate present. The vigour index also correlates well with their subsequent survival potential in a semi-dry transport system.
DOI Link: http://dx.doi.org/10.1016/j.fishres.2017.02.016
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Albalat A, Sinclair S & Neil DM (2017) Validation of a vigour index for trawl-caught Norway lobsters (Nephrops norvegicus) destined for the live market: underlying links to both physiological condition and survivability, Fisheries Research, 191, pp. 25-29. DOI: 10.1016/j.fishres.2017.02.016 © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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