Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/43536
Title: Evaluation of two anaesthetic agents and the passive integrated transponder tagging system in Octopus vulgaris (Cuvier 1797)
Authors: Estefanell, J.
Socorro, J.
Afonso López, Juan Manuel 
Roo Filgueira, Francisco Javier 
Fernández Palacios, Hipólito 
Izquierdo López, María Soledad 
UNESCO Clasification: 251092 Acuicultura marina
Keywords: Octopus vulgaris
PIT tags
Anaesthetics
Retention
Issue Date: 2011
Project: JACUMAR Spanish National Plans for Aquaculture (‘Optimización del engorde de pulpo Octopus vulgaris’, 2007–2009)
Journal: Aquaculture Research 
Abstract: Octopus vulgaris is a species of demand in the market with the potential to diversify European aquaculture. However, this species develops complex social interactions under culture conditions, which may have negative effects on its growth, survival and profitability. In order to understand its behaviour under such conditions, individual tagging systems allow a careful evaluation of biological parameters, such as growth and longevity. The present work describes a combined protocol (anaesthetic and tagging) for implanting subcutaneous passive integrated transponder tags (PIT). The effect of two anaesthetic agents in facilitating octopus handling is assessed: clove oil at 20–40–100 mg L−1 and ethanol (96%) at 1–1.5–2%. The most suitable body location of PIT tags, its effect on growth and mortality, the addition of a stitch and the PIT retention rate after 2 months in floating cages were evaluated. It was concluded that immersion in seawater with 1.5% of ethanol at 22.3±0.5 °C is a suitable anaesthetic for this species. The results showed that the best‐selected PIT body location was the upper left arm III. No effect of the PIT tagging system was found on growth and survival when tagged and untagged octopuses were compared. It was observed after 2 months that the stitch did not induce an increase in the retention rate and 81–100% tag retention regardless of the dietary treatment.
URI: http://hdl.handle.net/10553/43536
ISSN: 1355-557X
DOI: 10.1111/j.1365-2109.2010.02634.x
Source: Aquaculture Research [ISSN 1355-557X], v. 42 (3), p. 399-406
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