Loading...
2 results
Search Results
Now showing 1 - 2 of 2
- Preliminary results on the daily and seasonal rhythms of cuttlefish Sepia officinalis (Linnaeus, 1758) locomotor activity in captivityPublication . Oliveira, Catarina; Grano-Maldonado, Mayra; Gonçalves, Rui A.; Frias, Paulo; Sykes, António V.Cephalopods are considered as an alternate group for aquaculture species diversification [1,2], not only because they are a good food source (highly appreciated in some worldwide markets, e.g., Portugal, Spain, Italy and Asia) and have the potential to quickly reach a market size, but also because they are considered animal models in several fields of research [3–5], and it is expected that such models are progressively obtained from bioteriums instead of being captured from nature. Despite the recent advances in culture protocols of several cephalopod species [2], there is still little information available about the biological rhythms of cephalopods in captivity. In fact, to the best of our knowledge, there are only 4 published papers concerning this theme, and these are focused on octopus species [6–9]. This issue assumes increasing importance with the enforcement of EU welfare legislation (Directive 2010/63/EU), and this information is critical for the future update of Annex III (housing conditions) for cephalopods of that Directive, and for a future update of the Guidelines for the Care and Welfare of Cephalopods in Research [10]. If it is considered that the European cuttlefish Sepia officinalis (Linnaeus, 1758) may have, at the least, two different sleep‐like states [11], the importance of this study becomes even more evident.
- Early weaning of cuttlefish (Sepia officinalis, L.) with frozen grass shrimp (Palaemonetes varians) from the first day after hatchingPublication . Sykes, António V.; Gonçalves, Rui A.; Andrade, José PedroThe European cuttlefish (Sepia officinalis) is one of the most well-known cephalopods (Boletzky 1983). During the last years, research on cuttlefish has focused on its introduction as a new species for aquaculture. This is due to the biological and economical characteristics that this species display, which have the potential for industrial culture. The most important are the short life cycles and the fast growth rates which imply lower production periods and associated costs. On the other hand, the inability to grow cephalopods on an inexpensive and storable prepared diet has been identified as a bottleneck (Sykes, Domingues, Correia & Andrade 2006).