14 documents found, page 1 of 2
Histological and scanning electron microscope observations on the developing re...
Arias-Montecino, Alejandro; Álvarez-Hernán, Guadalupe; Mera-Rodríguez, José Antonio de; Calle-Guisado, Violeta; Martín-Partido, GervasioIn this work we present a detailed study of the major events during retinal histogenesis of the cuttlefish Sepia officinalis from early embryos to newly hatched animals and juveniles. For this purpose, we carried out morphometric and histological analyses using light and scanning electron microscopy. From St19, the first embryonic stage analysed, to St23/24 the embryonic retina is composed of a pseudostratified...
Excitation–contraction coupling reflects the metabolic profile of mantle muscle...
Callaghan, Neal I.; Ducros, Loïck; Bennett, J. Craig; Capaz, Juan Carlos; Andrade, José Pedro Andrade; Sykes, António; Driedzic, William R.The mantle muscle of common cuttlefish, Sepia officinalis, is responsible both for high-magnitude and rapid movements for locomotion, as well as sustained ventilation, which require specific metabolic, electrophysiological, and structural organization. Young cuttlefish have a highly oxidative phenotype and a rapid growth rate. Here, we show high rates of oxygen consumption and protein synthesis in juveniles, an...
Felasa working group report: capture and transport of live cephalopods – recomm...
Sykes, António; Galligioni, Viola; Estefanell, Juan; Hetherington, Stuart; Brocca, Marco; Correia, Joao; Ferreira, André; Pieroni, Eleonora M.On 1 January 2013, research using cephalopod molluscs, from hatchlings to adults, became regulated within Directive 2010/63/EU. There are significant difficulties in captive breeding in the great majority of currently utilised species. Thus, scientific research relies upon the use of wild-caught animals. Furthermore, live cephalopods are shared and transported between different stakeholders and laboratories acr...
Control of zootechnology leads to improved Cuttlefish (Sepia officinalis, L.) r...
Capaz, Juan Carlos; Hernández-Brooke, Daniel; Balvet, Safia; Couto, Ana T.; Alves, Alexandra; Baptista Gonçalves, Rui; Frias, Paulo A.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...
Can Cephalopods vomit? Hypothesis based on a review of circumstantial evidence ...
Sykes, António; Almansa, Eduardo; Ponte, Giovanna; Cooke, Gavan M.; Andrews, Paul L. R.In representative species of all vertebrate classes, the oral ejection of upper digestive tract contents by vomiting or regurgitation is used to void food contaminated with toxins or containing indigestible material not voidable in the feces. Vomiting or regurgitation has been reported in a number of invertebrate marine species (Exaiptasia diaphana, Cancer productus, and Pleurobranchaea californica), prompting ...
Natural geochemical markers reveal environmental history and population connect...
Rooker, Jay R.; Wells, R. J. David; Addis, Piero; Arrizabalaga, Haritz; Baptista, Miguel; Bearzi, Giovanni; Dance, Michael A.; Fraile, IgaratzaNatural markers (delta C-13 and delta O-18 stable isotopes) in the cuttlebones of the European common cuttlefish (Sepia officinalis) were determined for individuals collected across a substantial portion of their range in the Northeast Atlantic Ocean (NEAO) and Mediterranean Sea. Cuttlebone delta C-13 and delta O-18 were quantified for core and edge material to characterize geochemical signatures associated wit...
Behavioural aspects of the spotty bobtail squid Euprymna parva (Cephalopoda: Se...
Drerup, Christian; Sykes, António; Cooke, Gavan M.Bobtail squids (Sepiolidae, Cephalopoda) have recently been growing in popularity in scientific studies due to their symbiotic relationship with light producing bacteria and their corresponding light emitting organs. However, the overall knowledge on the behaviour of sepiolids is based on observations on just a few of the roughly 70 extant species and must still be considered as sparsely. Understanding their be...
Interrelationship between contractility, protein synthesis and metabolism in ma...
Lamarre, Simon G.; MacCormack, Tyson J.; Bourloutski, Émilie; Callaghan, Neal I.; Pinto, Vanessa; Andrade, José Pedro; Sykes, AntónioYoung juvenile cuttlefish (Sepia officinalis) can grow at rates as high as 12% body weight per day. How the metabolic demands of such a massive growth rate impacts muscle performance that competes for ATP is unknown. Here, we integrate aspects of contractility, protein synthesis, and energy metabolism in mantle of specimens weighing 1.1 g to lend insight into the processes. Isolated mantle muscle preparations w...
Corrigendum: hypoxic induced decrease in oxygen consumption in cuttlefish (Sepi...
Capaz, Juan Carlos; Tunnah, Louise; MacCormack, Tyson J.; Lamarre, Simon G.; Sykes, António; Driedzic, William R.Corrige o artigo http://hdl.handle.net/10400.1/10858 [This corrects the article DOI: 10.3389/fphys.2017.00344.].
The digestive tract of cephalopods: a neglected topic of relevance to animal we...
Sykes, António; Almansa, Eduardo; Cooke, Gavan M.; Ponte, Giovanna; Andrews, Paul L. R.Maintenance of health and welfare of a cephalopod is essential whether it is in a research, aquaculture or public display. The inclusion of cephalopods in the European Union legislation (Directive 2010/63/EU) regulating the use of animals for scientific purposes has prompted detailed consideration and review of all aspects of the care and welfare of cephalopods in the laboratory but the information generated wi...