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Sepia officinalis

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https://www.readbyqxmd.com/read/27796978/metal-bioaccumulation-in-two-edible-cephalopods-in-the-gulf-of-gabes-south-eastern-tunisia-environmental-and-human-health-risk-assessment
#1
Lotfi Rabaoui, Radhouan El Zrelli, Rafik Balti, Lamjed Mansour, Pierre Courjault-Radé, Nabil Daghbouj, Sabiha Tlig-Zouari
Samples of Octopus vulgaris and Sepia officinalis were collected from four areas in the Gulf of Gabes, south-eastern Tunisia, and their edible tissues (mantle and arms) were analyzed for cadmium, copper, mercury, and zinc. While the concentrations of metals showed significant differences between the sampling sites, no differences were revealed between the tissues of the two species. The spatial distribution of metals analyzed showed similar pattern for both tissues of the two species, with the highest concentrations found in the central area of Gabes Gulf, and the lowest in the northern and/or southern areas...
October 28, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27743598/exploration-of-the-therapeutic-potential-effect-of-sepia-officinalis-in-animal-model-of-sepsis-induced-by-cecal-ligation-and-puncture
#2
Asmaa Abd El-Aleem Abd El-Latif, Amany Ahmed Sayed, Amel Mahmoud Soliman, Sohair Ramadan Fahmy
OBJECTIVE: The present investigation explored the therapeutic potential effect of Sepia officinalis body tissue (SOBT) and Sepia officinalis polysaccharide (SOP) extracts, in animal model of sepsis [induced by cecal ligation and puncture (CLP)]. MATERIALS AND METHODS: Experimental animals were divided into 4 groups, Group 1: Sham control rats. Group 2: Septic rats. Group 3: Septic rats treated with methanolic extract of Sepia officinalis body tissue (SOBT) (500mg/kg body weight) for 2days...
December 2016: Injury
https://www.readbyqxmd.com/read/27714785/behavioral-development-in-embryonic-and-early-juvenile-cuttlefish-sepia-officinalis
#3
Caitlin E O'Brien, Nawel Mezrai, Anne-Sophie Darmaillacq, Ludovic Dickel
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...
October 7, 2016: Developmental Psychobiology
https://www.readbyqxmd.com/read/27576138/first-proteomic-analyses-of-the-dorsal-and-ventral-parts-of-the-sepia-officinalis-cuttlebone
#4
Charles Le Pabic, Arul Marie, Benjamin Marie, Aline Percot, Laure Bonnaud-Ponticelli, Pascal Jean Lopez, Gilles Luquet
: Protein compounds constituting mollusk shells are known for their major roles in the biomineralization processes. These last years, a great diversity of shell proteins have been described in bivalves and gastropods allowing a better understanding of the calcification control by organic compounds and given promising applications in biotechnology. Here, we analyzed for the first time the organic matrix of the aragonitic Sepia officinalis shell, with an emphasis on protein composition of two different structures: the dorsal shield and the chambered part...
August 26, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/27530149/diversity-of-apostome-ciliates-chromidina-spp-oligohymenophorea-opalinopsidae-parasites-of-cephalopods-of-the-mediterranean-sea
#5
Dhikra Souidenne, Isabelle Florent, Marc Dellinger, Jean Lou Justine, Mohamed Salah Romdhane, Hidetaka Furuya, Philippe Grellier
Chromidina spp. are enigmatic apostome ciliates (Oligohymenophorea, Opalinopsidae) that parasitise the renal and pancreatic appendages of cephalopods. Only four species have been described, among which only three have been formally named. No DNA sequence has been reported so far. To investigate Chromidina spp. diversity, we sampled cephalopods in the Mediterranean Sea off Tunis, Tunisia, and identified two distinct Chromidina spp. in two different host species: Loligo vulgaris and Sepia officinalis. From haematoxylin-stained slides, we described morphological traits for these parasitic species and compared them to previous descriptions...
2016: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/27331398/analyses-of-sox-b-and-sox-e-family-genes-in-the-cephalopod-sepia-officinalis-revealing-the-conserved-and-the-unusual
#6
Laura Focareta, Alison G Cole
Cephalopods provide an unprecedented opportunity for comparative studies of the developmental genetics of organ systems that are convergent with analogous vertebrate structures. The Sox-family of transcription factors is an important class of DNA-binding proteins that are known to be involved in many aspects of differentiation, but have been largely unstudied in lophotrochozoan systems. Using a degenerate primer strategy we have isolated coding sequence for three members of the Sox family of transcription factors from a cephalopod mollusk, the European cuttlefish Sepia officinalis: Sof-SoxE, Sof-SoxB1, and Sof-SoxB2...
2016: PloS One
https://www.readbyqxmd.com/read/27283470/the-antidepressant-venlafaxine-may-act-as-a-neurodevelopmental-toxicant-in-cuttlefish-sepia-officinalis
#7
Flavie Bidel, Carole Di Poi, Hélène Budzinski, Patrick Pardon, William Callewaert, Adeline Arini, Niladri Basu, Ludovic Dickel, Cécile Bellanger, Christelle Jozet-Alves
The Serotonin/Norepinephrine Reuptake Inhibitor (SNRI) antidepressant venlafaxine (VEN, Effexor(®)) has become one of the most common antidepressants detected in North American and European streams. Mammalian research has established that VEN exposure is associated with a range of structural, neurochemical, and functional alterations of the brain in adults and newborns. However, the neurodevelopmental effects of VEN on non-target organisms have never been investigated. The aim of our research was to decrease this gap in knowledge by characterizing the effects of VEN exposure on a cephalopod mollusk, the common cuttlefish Sepia officinalis...
July 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27267253/composition-and-metabolism-of-phospholipids-in-octopus-vulgaris-and-sepia-officinalis-hatchlings
#8
Diana B Reis, Nieves G Acosta, Eduardo Almansa, Douglas R Tocher, José P Andrade, António V Sykes, Covadonga Rodríguez
The objective of the present study was to characterise the fatty acid (FA) profiles of the major phospholipids, of Octopus vulgaris and Sepia officinalis hatchlings, namely phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylinositol (PI) and phosphatidylethanolamine (PE); and to evaluate the capability of both cephalopod species on dietary phospholipid remodelling. Thus, O. vulgaris and S. officinalis hatchlings were in vivo incubated with 0.3μM of L-∝-1-palmitoyl-2-[1-(14)C]arachidonyl-PC or L-∝-1-palmitoyl-2-[1-(14)C]arachidonyl-PE...
October 2016: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/27151209/nervous-system-development-in-cephalopods-how-egg-yolk-richness-modifies-the-topology-of-the-mediolateral-patterning-system
#9
A Buresi, A Andouche, S Navet, Y Bassaglia, L Bonnaud-Ponticelli, S Baratte
Cephalopods possess the most complex centralized nervous system among molluscs and the molecular determinants of its development have only begun to be explored. To better understand how evolved their brain and body axes, we studied Sepia officinalis embryos and investigated the expression patterns of neural regionalization genes involved in the mediolateral patterning of the neuroectoderm in model species. SoxB1 expression reveals that the embryonic neuroectoderm is made of several distinct territories that constitute a large part of the animal pole disc...
July 1, 2016: Developmental Biology
https://www.readbyqxmd.com/read/27138338/enzymatic-capacities-of-metabolic-fuel-use-in-cuttlefish-sepia-officinalis-and-responses-to-food-deprivation-insight-into-the-metabolic-organization-and-starvation-survival-strategy-of-cephalopods
#10
Ben Speers-Roesch, Neal I Callaghan, Tyson J MacCormack, Simon G Lamarre, Antonio V Sykes, William R Driedzic
Food limitation is a common challenge for animals. Cephalopods are sensitive to starvation because of high metabolic rates and growth rates related to their "live fast, die young" life history. We investigated how enzymatic capacities of key metabolic pathways are modulated during starvation in the common cuttlefish (Sepia officinalis) to gain insight into the metabolic organization of cephalopods and their strategies for coping with food limitation. In particular, lipids have traditionally been considered unimportant fuels in cephalopods, yet, puzzlingly, many species (including cuttlefish) mobilize the lipid stores in their digestive gland during starvation...
August 2016: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/27099690/new-insights-into-sepsis-therapy-using-sepia-officinalis
#11
Amel M Soliman, Sohair R Fahmy, Amany A Sayed, Asmaa A Abd El-Latif
BACKGROUND: Sepsis remains a major problem for both scientists and clinicians. Cecal ligation and puncture (CLP) is considered the gold standard for animal models of sepsis. The undesirable side effects of certain antibiotics have forced scientists to discover new, natural, and safe antimicrobial agents, such as cephalopods, which are known to display significant antimicrobial activity. OBJECTIVES: The present investigation aims to evaluate the in vitro and in vivo antibacterial and antiseptic efficacy of Sepia officinalis body tissue (SOBT) extract and S...
January 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27053650/metabolic-rate-and-rates-of-protein-turnover-in-food-deprived-cuttlefish-sepia-officinalis-linnaeus-1758
#12
Simon G Lamarre, Tyson J MacCormack, Antonio V Sykes, Jennifer R Hall, Ben Speers-Roesch, Neal I Callaghan, William R Driedzic
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). Fasting resulted in a decrease in triglyceride levels in the digestive gland, and after 12 days, these lipid reserves were essentially depleted. Oxygen consumption was decreased to 53% and NH4 excretion to 36% of the fed group following 3-5 days of food deprivation. Oxygen consumption remained low in the starved group, but NH4 excretion returned to the level recorded for fed animals during starvation...
June 1, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/26997860/tuning-of-shortening-speed-in-coleoid-cephalopod-muscle-no-evidence-for-tissue-specific-muscle-myosin-heavy-chain-isoforms
#13
Justin F Shaffer, William M Kier
The contractile protein myosin II is ubiquitous in muscle. It is widely accepted that animals express tissue-specific myosin isoforms that differ in amino acid sequence and ATPase activity in order to tune muscle contractile velocities. Recent studies, however, suggested that the squid Doryteuthis pealeii might be an exception; members of this species do not express muscle-specific myosin isoforms, but instead alter sarcomeric ultrastructure to adjust contractile velocities. We investigated whether this alternative mechanism of tuning muscle contractile velocity is found in other coleoid cephalopods...
March 1, 2016: Invertebrate Biology
https://www.readbyqxmd.com/read/26984626/cuttlefish-see-shape-from-shading-fine-tuning-coloration-in-response-to-pictorial-depth-cues-and-directional-illumination
#14
Sarah Zylinski, D Osorio, Sonke Johnsen
Humans use shading as a cue to three-dimensional form by combining low-level information about light intensity with high-level knowledge about objects and the environment. Here, we examine how cuttlefish Sepia officinalis respond to light and shadow to shade the white square (WS) feature in their body pattern. Cuttlefish display the WS in the presence of pebble-like objects, and they can shade it to render the appearance of surface curvature to a human observer, which might benefit camouflage. Here we test how they colour the WS on visual backgrounds containing two-dimensional circular stimuli, some of which were shaded to suggest surface curvature, whereas others were uniformly coloured or divided into dark and light semicircles...
March 16, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/26663197/three-dimensional-brain-atlas-of-pygmy-squid-idiosepius-paradoxus-revealing-the-largest-relative-vertical-lobe-system-volume-among-the-cephalopods
#15
Motoki Koizumi, Shuichi Shigeno, Makoto Mizunami, Nobuaki K Tanaka
Cephalopods have the largest and most complex nervous system of all invertebrates, and the brain-to-body weight ratio exceeds those of most fish and reptiles. The brain is composed of lobe units, the functions of which have been studied through surgical manipulation and electrical stimulation. However, how information is processed in each lobe for the animal to make a behavioral decision has rarely been investigated. To perform such functional analyses, it is necessary to precisely describe how brain lobes are spatially organized and mutually interconnected as a whole...
July 1, 2016: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/26644087/taurine-depresses-cardiac-contractility-and-enhances-systemic-heart-glucose-utilization-in-the-cuttlefish-sepia-officinalis
#16
Tyson J MacCormack, N I Callaghan, A V Sykes, W R Driedzic
Taurine is the most abundant amino acid in the blood of the cuttlefish, Sepia officinalis, where levels can exceed 200 mmol L(-1). In mammals, intracellular taurine modulates cardiac Ca(2+) handling and carbohydrate metabolism at much lower concentrations but it is not clear if it exerts similar actions in cephalopods. Blood Ca(2+) levels are high in cephalopods and we hypothesized that taurine would depress cardiac Ca(2+) flux and modulate contractility in systemic and branchial hearts of cuttlefish. Heart performance was assessed with an in situ perfused systemic heart preparation and contractility was evaluated using isometrically contracting systemic and branchial heart muscle rings...
February 2016: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/26632866/neuropeptidome-of-the-cephalopod-sepia-officinalis-identification-tissue-mapping-and-expression-pattern-of-neuropeptides-and-neurohormones-during-egg-laying
#17
Céline Zatylny-Gaudin, Valérie Cornet, Alexandre Leduc, Bruno Zanuttini, Erwan Corre, Gildas Le Corguillé, Benoît Bernay, Johan Garderes, Alexandra Kraut, Yohan Couté, Joël Henry
Cephalopods exhibit a wide variety of behaviors such as prey capture, communication, camouflage, and reproduction thanks to a complex central nervous system (CNS) divided into several functional lobes that express a wide range of neuropeptides involved in the modulation of behaviors and physiological mechanisms associated with the main stages of their life cycle. This work focuses on the neuropeptidome expressed during egg-laying through de novo construction of the CNS transcriptome using an RNAseq approach (Illumina sequencing)...
January 4, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/26631562/freezing-behaviour-facilitates-bioelectric-crypsis-in-cuttlefish-faced-with-predation-risk
#18
Christine N Bedore, Stephen M Kajiura, Sönke Johnsen
Cephalopods, and in particular the cuttlefish Sepia officinalis, are common models for studies of camouflage and predator avoidance behaviour. Preventing detection by predators is especially important to this group of animals, most of which are soft-bodied, lack physical defences, and are subject to both visually and non-visually mediated detection. Here, we report a novel cryptic mechanism in S. officinalis in which bioelectric cues are reduced via a behavioural freeze response to a predator stimulus. The reduction of bioelectric fields created by the freeze-simulating stimulus resulted in a possible decrease in shark predation risk by reducing detectability...
December 7, 2015: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/26494614/molecular-cloning-expression-analysis-and-cellular-localization-of-an-lfrfamide-gene-in-the-cuttlefish-sepiella-japonica
#19
Zi-Hao Cao, Lian-Lian Sun, Chang-Feng Chi, Hui-Hui Liu, Li-Qing Zhou, Zhen-Ming Lv, Chang-Wen Wu
Neuropeptides are important regulators of physiological processes in metazoans, such as feeding, reproduction, and heart activities. In this study, an LFRFamide gene was identified from the cuttlefish Sepiella japonica (designated as SjLFRFamide). The full-length sequence of SjLFRFamide cDNA has 841bp, and the open reading frame contains 567bp encoding 188 amino acids, which shared high similarity with precursor SOFaRP2 from Sepia officinalis. The deduced SjLFRFamdie precursor protein contains a signal peptide and four different FLPs (FMRFamide-like peptides): one pentapeptide (TIFRFamide), two hexapeptides (NSLFRFamide and GNLFRFamide) and one heptapeptide (PHTPFRFamide)...
June 2016: Peptides
https://www.readbyqxmd.com/read/26465786/cuttlefish-sepia-officinalis-preferentially-respond-to-bottom-rather-than-side-stimuli-when-not-allowed-adjacent-to-tank-walls
#20
Darcy A A Taniguchi, Yakir Gagnon, Benjamin R Wheeler, Sönke Johnsen, Jules S Jaffe
Cuttlefish are cephalopods capable of rapid camouflage responses to visual stimuli. However, it is not always clear to what these animals are responding. Previous studies have found cuttlefish to be more responsive to lateral stimuli rather than substrate. However, in previous works, the cuttlefish were allowed to settle next to the lateral stimuli. In this study, we examine whether juvenile cuttlefish (Sepia officinalis) respond more strongly to visual stimuli seen on the sides versus the bottom of an experimental aquarium, specifically when the animals are not allowed to be adjacent to the tank walls...
2015: PloS One
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