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Angel Guerra - One of the best experts on this subject based on the ideXlab platform.
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Food of the cuttlefish Sepia Officinalis and S. elegans in the Ria de Vigo (NW Spain) (Mollusca: Cephalopoda)
Journal of Zoology, 2009Co-Authors: Angel GuerraAbstract:A study of the diet of Sepia Officinalis and S. elegans in the Ria de Vigo has shown that crustaceans are the most abundant prey in both species, followed by fish. Changes in the food composition of both species occur with growth. The type of prey eaten by the two sexes of these species is very similar. The possibility of trophic competition between juveniles of S. qficinalis and S. elegans is discussed.
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ecology of Sepia Officinalis
Vie et milieu, 2006Co-Authors: Angel GuerraAbstract:This article comprises an up-dated review of the processes influenc- ing the distribution and abundance of the common cuttlefish Sepia Officinalis ,t he interactions between the species and the main variables of the environment in which it lives and its trophic, demographic and behavioural ecology. The geographical distribution of the common cuttlefish, Sepia Officinalis L., 1758 covers the Mediterranean Sea and the waters of the Eastern Atlantic from southern Norway and northern England to the northwestern coast of Africa. The species also lives in Madeira and in the Canary Is- lands (Khromov et al. 1998). The geographical dis- tribution of S. Officinalis and Sepia hierredda Rang, 1837 in the eastern Central Atlantic shows that these species are sympatric. The southern boundary of S. Officinalis coincides approximately with the border between Mauritania and Senegal (16oN) and the northern limit of S. hierredda is at Cape Blanc (21oN) (Guerra et al. 2001).
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growth of Sepia Officinalis in captivity and in nature
Vie et milieu, 2006Co-Authors: P M Domingues, V Bettencourt, Angel GuerraAbstract:This article presents a review on growth of the cuttlefish (Sepia Officinalis) under laboratory conditions as well as in wild populations. Growth in captivity under different conditions relating to culture density, prey type and den- sity, temperature and tank size is reported. Growth studies using artificial feeds are also reported. Growth in wild populations is focused upon considering recent re- sults based on age-size frequency distributions and biochemical indices, where some new data are given. The effect of some environmental factors on growth is also reported.
António V. Sykes - One of the best experts on this subject based on the ideXlab platform.
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Preliminary Results on the Daily and Seasonal Rhythms of Cuttlefish Sepia Officinalis (Linnaeus, 1758) Locomotor Activity in Captivity
Fishes, 2017Co-Authors: Catarina C.v. Oliveira, Mayra I. Grano-maldonado, Rui A. Gonçalves, Paulo A. Frias, António V. SykesAbstract:This research was aimed at characterizing the daily rhythms of locomotor activity of cuttlefish Sepia Officinalis (Linnaeus, 1758), a promising aquaculture species, in a captive environment. Cuttlefish were distributed within two tanks equipped with infrared photocells, allowing the monitoring of locomotor activity continuously from August to February. Results showed a preference of cuttlefish for being active during the night in summer (24.2 ± 1.3 °C) and in autumn (18.4 ± 3.4 °C), with maximum activity peaks observed, respectively, at 01:09 h and 21:47 h, in close relation with sunset time. In winter (12.7 ± 1.4 °C), this preference changed, with higher levels of activity observed during the afternoon in December (15:20 h) and in January (18:13 h), thus suggesting this species as possessing a dualistic behaviour. Levels of activity progressively decreased during autumn and winter, likely related to low temperatures. The present study offers new insights on the behaviour of Sepia Officinalis, presenting a variability of patterns across seasons, regulated by environmental synchronizers; photoperiod determining the activity periods, and temperature modulating the levels of activity. Such information may be a valuable tool for the improvement of cuttlefish culture protocols in aquaculture, and consequently its welfare.
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Metabolic rate and rates of protein turnover in food deprived cuttlefish, Sepia Officinalis (Linnaeus 1758)
American journal of physiology. Regulatory integrative and comparative physiology, 2016Co-Authors: Simon G. Lamarre, Tyson J. Maccormack, António V. Sykes, Jennifer R. Hall, Ben Speers-roesch, Neal Ingraham Callaghan, William R. DriedzicAbstract:To determine the metabolic response to food deprivation, cuttlefish (Sepia Officinalis) juveniles were either fed, fasted (3 to 5 days food deprivation), or starved (12 days food deprivation). Fast...
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Camouflage during movement in the European cuttlefish (Sepia Officinalis).
The Journal of experimental biology, 2015Co-Authors: Noam Josef, António V. Sykes, Igal Berenshtein, Graziano Fiorito, Nadav ShasharAbstract:A moving object is considered conspicuous because of the movement itself. When moving from one background to another, even dynamic camouflage experts such as cephalopods should sacrifice their extraordinary camouflage. Therefore, minimizing detection at this stage is crucial and highly beneficial. In this study, we describe a background-matching mechanism during movement, which aids the cuttlefish to downplay its presence throughout movement. In situ behavioural experiments using video and image analysis, revealed a delayed, sigmoidal, colour-changing mechanism during movement of Sepia Officinalis across uniform black and grey backgrounds. This is a first important step in understanding dynamic camouflage during movement, and this new behavioural mechanism may be incorporated and applied to any dynamic camouflaging animal or man-made system on the move.
Ludovic Dickel - One of the best experts on this subject based on the ideXlab platform.
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Behavioral development in embryonic and early juvenile cuttlefish (Sepia Officinalis)
Developmental Psychobiology, 2017Co-Authors: Caitlin E. O'brien, Anne-sophie Darmaillacq, Nawel Mezraï, Ludovic DickelAbstract:Though a mollusc, the cuttlefish Sepia Officinalis possesses a sophisticated brain, advanced sensory systems, and a large behavioral repertoire. Cuttlefish provide a unique perspective on animal behavior due to their phylogenic distance from more traditional (vertebrate) models. S. Officinalis is well-suited to addressing questions of behavioral ontogeny. As embryos, they can perceive and learn from their environment and experience no direct parental care. A marked progression in learning and behavior is observed during late embryonic and early juvenile development. This improvement is concomitant with expansion and maturation of the vertical lobe, the cephalopod analog of the mammalian hippocampus. This review synthesizes existing knowledge regarding embryonic and juvenile development in this species in an effort to better understand cuttlefish behavior and animal behavior in general. It will serve as a guide to future researchers and encourage greater awareness of the utility of this species to behavioral science.
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The Effect of an Artificial Incubation Environment on Hatchling Size and Behavior in the Cuttlefish, Sepia Officinalis
Vie et Milieu Life & Environment, 2016Co-Authors: Caitlin E. O'brien, Anne-sophie Darmaillacq, Christelle Jozet-alves, M. Bowie, Pauline Billard, David Benhaïm, Olivier Basuyaux, Ludovic DickelAbstract:A great deal is known about development in Sepia Officinalis; however, much of this knowledge comes from animals incubated in laboratory conditions. Since cuttlefish are behaviorally plastic and known as embryos to perceive environmental stimuli from within the egg, we wondered if they are affected by incubation environment and thus whether laboratory-incubated cuttlefish exhibit natural behavior. We investigated the effects of incubation environment on hatchling size, defense and predation behavior in Sepia Officinalis by comparing artificially-incubated hatchlings to naturally-incubated ones. Contrary to our expectations, no significant differences were apparent in hatchling size, disruptive body patterning and predation. A significant difference did exist between groups in one type of body patterning: Artificially-incubated hatchlings appeared to be better at producing a uniform body pattern than naturally-incubated individuals, possibly due to their prenatal experience with a homogeneous artificial substrate. This difference suggests some caution when interpreting experiments utilizing laboratory-incubated hatchlings, but overall, the limited effect of artificial incubation conditions demonstrated in this experiment bolsters confidence in previous behavioral results. These results are also promising for cuttlefish culture; eggs that would otherwise be lost as bycatch could instead be cultured artificially.
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Chapter 25. Learning, Memory, and Brain Plasticity in Cuttlefish (Sepia Officinalis)
2013Co-Authors: Ludovic Dickel, Anne-sophie Darmaillacq, Christelle Jozet-alves, Cécile BellangerAbstract:This chapter summarizes the literature on the anatomical and functional organization of the cuttlefish brain, with a focus on the structures involved in learning and memory processes (namely the vertical lobe system and optic lobes). Also, different learning paradigms that are commonly used in Sepia Officinalis are described with, when possible, their neural correlates. Recent work on the early development of brain and memory is also reviewed. Some research directions to follow in the field of neurobiology of learning and memory in cuttlefish are suggested to better understand the extraordinary behavioral plasticity of these sophisticated invertebrates.
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Learning, Memory, and Brain Plasticity in Cuttlefish (Sepia Officinalis)
Invertebrate Learning and Memory, 2013Co-Authors: Ludovic Dickel, Anne-sophie Darmaillacq, Christelle Jozet-alves, Cécile BellangerAbstract:This chapter summarizes the literature on the anatomical and functional organization of the cuttlefish brain, with a focus on the structures involved in learning and memory processes (namely the vertical lobe system and optic lobes). Also, different learning paradigms that are commonly used in Sepia Officinalis are described with, when possible, their neural correlates. Recent work on the early development of brain and memory is also reviewed. Some research directions to follow in the field of neurobiology of learning and memory in cuttlefish are suggested to better understand the extraordinary behavioral plasticity of these sophisticated invertebrates.
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Developmental study of multiple memory stages in the cuttlefish, Sepia Officinalis.
Neurobiology of Learning and Memory, 2006Co-Authors: Véronique Agin, Ludovic Dickel, Raymond Chichery, Roseline Poirier, Marie-paule ChicheryAbstract:The inhibition of predatory behavior observed during the "prawn-in-the-tube" procedure has been extensively used in studies of cuttlefish learning. The present study examines the effect of age on the conditioning of this response in the cuttlefish, Sepia Officinalis. Data show that a significant increase in acquisition performance occurs between 15 and 21 days of age. The retention curves in 8- and 15-day-old cuttlefish show a monotonic memory process, presumably reflecting the presence of only short-term memory. In 21-day-old cuttlefish, there are two distinct processes which could be a labile short-term memory, and a subsequent intermediate memory. These mnesic systems seem to become more effective over the course of post-embryonic development. Moreover, the retention curves obtained in the oldest cuttlefish (30- and 90-day-old) bear a close resemblance to that observed in adults. These behavioral findings will allow further work on the cellular and molecular mechanisms of learning and memory in the cuttlefish.
Felix Christopher Mark - One of the best experts on this subject based on the ideXlab platform.
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A new haemocyanin in cuttlefish (Sepia Officinalis) eggs: sequence analysis and relevance during ontogeny
EvoDevo, 2014Co-Authors: Anne Thonig, Michael Oellermann, Bernhard Lieb, Felix Christopher MarkAbstract:Haemocyanin is the respiratory protein of most of the Mollusca. In cephalopods and gastropods at least two distinct isoforms are differentially expressed. However, their physiological purpose is unknown. For the common cuttlefish Sepia Officinalis, three isoforms are known so far, whereas for only two of them the complete mRNA sequences are available. In this study, we sequenced the complete mRNA of the third haemocyanin isoform and measured the relative expression of all three isoforms during embryogenesis to reveal a potential ontogenetic relevance. The cDNA of isoform 3 clearly correlates to the known Sepia Officinalis haemocyanin subunits consisting of eight functional units and an internal duplicated functional unit d. Our molecular phylogenetic analyses reveal the third isoform representing a potentially ancestral haemocyanin isoform, and the analyses of the expression of haemocyanin type 3 reveal that haemocyanin type 3 only can be observed within eggs and during early development. Isoforms 1 and 2 are absent at these stages. After hatching, isoform 3 is downregulated, and isoform 1 and 2 are upregulated. Our study clearly shows an embryonic relevance of the third isoform, which will be further discussed in the light of the changes in the physiological function of haemocyanin during ontogeny. Taken together with the fact that it could also be the isoform closest related to the common ancestor of cuttlefish haemocyanin, the phylogeny of cuttlefish haemocyanin may be recapitulated during its ontogeny.
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A new haemocyanin in cuttlefish (Sepia Officinalis) eggs: sequence analysis and relevance during ontogeny
EvoDevo, 2014Co-Authors: Anne Thonig, Michael Oellermann, Bernhard Lieb, Felix Christopher MarkAbstract:Background Haemocyanin is the respiratory protein of most of the Mollusca. In cephalopods and gastropods at least two distinct isoforms are differentially expressed. However, their physiological purpose is unknown. For the common cuttlefish Sepia Officinalis, three isoforms are known so far, whereas for only two of them the complete mRNA sequences are available. In this study, we sequenced the complete mRNA of the third haemocyanin isoform and measured the relative expression of all three isoforms during embryogenesis to reveal a potential ontogenetic relevance. Results The cDNA of isoform 3 clearly correlates to the known Sepia Officinalis haemocyanin subunits consisting of eight functional units and an internal duplicated functional unit d. Our molecular phylogenetic analyses reveal the third isoform representing a potentially ancestral haemocyanin isoform, and the analyses of the expression of haemocyanin type 3 reveal that haemocyanin type 3 only can be observed within eggs and during early development. Isoforms 1 and 2 are absent at these stages. After hatching, isoform 3 is downregulated, and isoform 1 and 2 are upregulated. Conclusions Our study clearly shows an embryonic relevance of the third isoform, which will be further discussed in the light of the changes in the physiological function of haemocyanin during ontogeny. Taken together with the fact that it could also be the isoform closest related to the common ancestor of cuttlefish haemocyanin, the phylogeny of cuttlefish haemocyanin may be recapitulated during its ontogeny.
William R. Driedzic - One of the best experts on this subject based on the ideXlab platform.
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Metabolic rate and rates of protein turnover in food deprived cuttlefish, Sepia Officinalis (Linnaeus 1758)
American journal of physiology. Regulatory integrative and comparative physiology, 2016Co-Authors: Simon G. Lamarre, Tyson J. Maccormack, António V. Sykes, Jennifer R. Hall, Ben Speers-roesch, Neal Ingraham Callaghan, William R. DriedzicAbstract:To determine the metabolic response to food deprivation, cuttlefish (Sepia Officinalis) juveniles were either fed, fasted (3 to 5 days food deprivation), or starved (12 days food deprivation). Fast...
