51 documents found, page 1 of 6
Control of zootechnology leads to improved cuttlefish (Sepia officinalis, L.) r...
Capaz, Juan C.; Hernández-Brooke, Daniel; Balvet, Safia; Couto, Ana T.; Alves, Alexandra C.; Gonçalves, Rui A.; Frias, Paulo A.; Andrade, José P.Cephalopods are gaining momentum as an alternate group for aquaculture species diversification, not only because they are a good food source (highly appreciated in some worldwide markets) but they also have the potential to quickly reach a market size. However, there are some bottlenecks impeding the transition of culture technology from the laboratory to industry. One is related to control over reproduction in...
Reversion to developmental pathways underlies rapid arm regeneration in juvenil...
Callaghan, Neal I.; Capaz, Juan Carlos; Lamarre, Simon G.; Bourloutski, Emilie; Oliveira, Ana R.; MacCormack, Tyson J.; Driedzic, William R.Coleoid cephalopods, including the European cuttlefish (Sepia officinalis), possess the remarkable ability to fully regenerate an amputated arm with no apparent fibrosis or loss of function. In model organisms, regeneration usually occurs as the induction of proliferation in differentiated cells. In rare circumstances, regeneration can be the product of naive progenitor cells proliferating and differentiating d...
Olfactory-like neurons are present in the forehead of common cuttlefish, Sepia ...
Campinho, Marco António; Oliveira, Ana R.; Sykes, António V.According to the literature, the cuttlefish, Sepia officinalis, possesses a specialized olfactory organ and cells, located in olfactory ventral pits. In this study, the location of olfactory receptor neurons (ORNs) at the cellular level was determined using cellular morphology and immunohistochemistry. An antiserum against PBP3 was used as a marker to identify ORN-like cells in cuttlefish after validation for s...
Common octopus (Octopus vulgaris) performance when including fasting on feeding...
Rodríguez-González, Tânia; Valverde, Jesús; Sykes, António V.; García García, BenjamínThe common octopus (Octopus vulgaris) has aroused great interest in recent years as a new species for aquaculture. The current research is focused on developing a formulated feed, although a proper diet management has also promoted rearing success of other commercial cultured species. It is documented that wild animals eat depending on prey availability and most experience fasting in nature. Hence, O. vulgaris ...
The digestive tract of cephalopods: toward non-invasive in vivo monitoring of I...
Ponte, Giovanna; Sykes, António V.; Cooke, Gavan M.; Almansa, Eduardo; Andrews, Paul L. R.Ensuring the health and welfare of animals in research is paramount, and the normal functioning of the digestive tract is essential for both. Here we critically assess non- or minimally-invasive techniques which may be used to assess a cephalopod's digestive tract functionality to inform health monitoring. We focus on: (i) predatory response as an indication of appetitive drive; (ii) body weight assessment and ...
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvie...
Garrido, Diego; Reis, Diana; Orol, Diego; Gonçalves, Rui A.; Martín, M.; Sykes, António V.; Rodríguez, Covadonga; Felipe, Beatriz; Zheng, XiaodongHigh paralarvae mortality is a major bottleneck currently hindering the control over the lifecycle of common octopus (Octopus vulgaris Cuvier, 1797). It is believed that this problem might be related to either zoo-technical and/or nutritional aspects. The present paper is focused on the study of different zoo-technical aspects related to light conditions on the rearing of paralarvae, including the effects of po...
Preliminary results on the daily and seasonal rhythms of cuttlefish Sepia offic...
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 prog...
Comparative study on fatty acid metabolism of early stages of two crustacean sp...
Reis, Diana; Acosta, Nieves G.; Almansa, Eduardo; Navarro, Juan C.; Tocher, Douglas R.; Andrade, José Pedro; Sykes, António V.; Rodríguez, CovadongaThe present study compared the lipid composition and in vivo capability of Artemia sp. metanauplii (the main live prey used in aquaculture) and Grapsus adscensionis zoeae (as a wild zooplankton model) to metabolise unsaturated fatty acids. The two species were incubated in vivo with 0.3μM of individual [1-14C]fatty acids (FA) including 18:1n-9, 18:2n-6, 18:3n-3, 20:4n-6 (ARA), 20:5n-3 (EPA) and 22:6n-3 (DHA) bo...
Hypoxic induced decrease in oxygen consumption in Cuttlefish (Sepia officinalis...
Capaz, Juan Carlos; Tunnah, Louise; MacCormack, Tyson J.; Lamarre, Simon G.; Sykes, António V.; Driedzic, William R.The common cuttlefish (Sepia officinalis), a dominant species in the north-east Atlantic ocean and Mediterranean Sea, is potentially subject to hypoxic conditions due to eutrophication of coastal waters and intensive aquaculture. Here we initiate studies on the biochemical response to an anticipated level of hypoxia. Cuttlefish challenged for 1 h at an oxygen level of 50% dissolved oxygen saturation showed a de...
Refining tools for studying cuttlefish ( Sepia officinalis ) reproduction in ca...
Sykes, António V.; Alves, Alexandra; Capaz, Juan Carlos; Madeira, Céline; Couto, Ana T.; Gonçalves, Rui A.; Frias, Paulo A.; Leal, IreneTo overcome the bottleneck of reproduction in cuttlefish, Sepia officinalis, aquaculture development, there is need for new tools or refinement of methods. While attaining low welfare impact on individuals, procedures to allow for in vivo individual sexual and maturity determination, tagging and collection of samples for high quality DNA are needed. The present study evaluated the use of an endoscope, visual im...