Cephalopod Genomics: a Plan of Strategies and Organization
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CEPHALOPODS 688 Cephalopods
click for previous page CEPHALOPODS 688 Cephalopods Introduction and GeneralINTRODUCTION Remarks AND GENERAL REMARKS by M.C. Dunning, M.D. Norman, and A.L. Reid iving cephalopods include nautiluses, bobtail and bottle squids, pygmy cuttlefishes, cuttlefishes, Lsquids, and octopuses. While they may not be as diverse a group as other molluscs or as the bony fishes in terms of number of species (about 600 cephalopod species described worldwide), they are very abundant and some reach large sizes. Hence they are of considerable ecological and commercial fisheries importance globally and in the Western Central Pacific. Remarks on MajorREMARKS Groups of CommercialON MAJOR Importance GROUPS OF COMMERCIAL IMPORTANCE Nautiluses (Family Nautilidae) Nautiluses are the only living cephalopods with an external shell throughout their life cycle. This shell is divided into chambers by a large number of septae and provides buoyancy to the animal. The animal is housed in the newest chamber. A muscular hood on the dorsal side helps close the aperture when the animal is withdrawn into the shell. Nautiluses have primitive eyes filled with seawater and without lenses. They have arms that are whip-like tentacles arranged in a double crown surrounding the mouth. Although they have no suckers on these arms, mucus associated with them is adherent. Nautiluses are restricted to deeper continental shelf and slope waters of the Indo-West Pacific and are caught by artisanal fishers using baited traps set on the bottom. The flesh is used for food and the shell for the souvenir trade. Specimens are also caught for live export for use in home aquaria and for research purposes. -
Annual Report 2014
AR 14 ARC CENTRE OF EXCELLENCE FOR CORAL REEF STUDIES ANNUAL REPORT 2014 Contents 2 Vision 2 Aims 2 Overview 4 Director’s Report 6 2014 Highlights 7 Global Research Reach 8 Chief Investigator Profile: Associate Professor Sophie Dove 10 Graduate Profile: Georgina Gurney 11 Research Program 1: People and Ecosystems 17 Research Program 2: Ecosystem Dynamics: Past Present and Future 23 Research Program 3: Responding to a Changing World 29 Article: Single Species May be Key to Reef Health 30 Knowledge Transfer 32 Graduate and Early Career Training At the ARC Centre of Excellence for Coral Reef Studies we acknowledge the Australian Aboriginal and Torres Strait Islander peoples of this nation. We acknowledge the Traditional Owners of the lands where we conduct our business. We pay our respects to ancestors and Elders, past, present and future. Cover photo by Raphael Williams Photo by Stefano Montanari 41 National and International Linkages 44 Article: Effects of Changing Tastes in China Extend Abroad 46 Media and Public Outreach 49 National Research Priority Case Study: The Great Barrier Reef 51 Article: Plan to Protect Great Barrier Reef Under Fire 52 Publications 62 Recognition of Excellence by Centre Members 64 Governance 66 Leader Profile: Professor Katrina Brown 67 Membership 69 Financial Statement 70 Financial Outlook 71 Key Performance Indicators 75 Acknowledgements AR 14 Photo by Steve Lindfield Vision Aims Overview 2 CORAL REEF STUDIES Leading the global research effort in the provision of scientific knowledge necessary for sustaining the ecosystem goods and services of the world’s coral reefs during a period of unprecedented environmental change. -
Siphuncular Structure in the Extant Spirula and in Other Coleoids (Cephalopoda)
GFF ISSN: 1103-5897 (Print) 2000-0863 (Online) Journal homepage: http://www.tandfonline.com/loi/sgff20 Siphuncular Structure in the Extant Spirula and in Other Coleoids (Cephalopoda) Harry Mutvei To cite this article: Harry Mutvei (2016): Siphuncular Structure in the Extant Spirula and in Other Coleoids (Cephalopoda), GFF, DOI: 10.1080/11035897.2016.1227364 To link to this article: http://dx.doi.org/10.1080/11035897.2016.1227364 Published online: 21 Sep 2016. Submit your article to this journal View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=sgff20 Download by: [Dr Harry Mutvei] Date: 21 September 2016, At: 11:07 GFF, 2016 http://dx.doi.org/10.1080/11035897.2016.1227364 Siphuncular Structure in the Extant Spirula and in Other Coleoids (Cephalopoda) Harry Mutvei Department of Palaeobiology, Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden ABSTRACT ARTICLE HISTORY The shell wall in Spirula is composed of prismatic layers, whereas the septa consist of lamello-fibrillar nacre. Received 13 May 2016 The septal neck is holochoanitic and consists of two calcareous layers: the outer lamello-fibrillar nacreous Accepted 23 June 2016 layer that continues from the septum, and the inner pillar layer that covers the inner surface of the septal KEYWORDS neck. The pillar layer probably is a structurally modified simple prisma layer that covers the inner surface of Siphuncular structures; the septal neck in Nautilus. The pillars have a complicated crystalline structure and contain high amount of connecting rings; Spirula; chitinous substance. -
Cuttlebone: Characterization and Applications
Cuttlebone: Characterization and Applications By: Safieh Momeni Cuttlebone Cuttlebone signifies a special class of ultra-lightweight, high stiffness and high permeability cellular biomaterials, providing the cuttlefish with an efficient means of maintaining neutral buoyancy at considerable habitation depths. In addition, this rigid cellular material provides the structural backbone of the body and plays a key role in the protection of vital organs. Cuttlebone The cuttlebone has two main components: Dorsal shield Lamellar matrix The dorsal shield is very tough and dense, providing a rigid substrate for protection, structure and the development of the lamellar matrix of cuttlebone. The lamellar matrix of cuttlebone has an extreme porosity (up to 90%), but also manages to withstand very high hydrostatic pressure. Lamellar matrix The lamellar matrix consists primarily of aragonite (a crystallised form of calcium carbonate, CaCO3), enveloped in a layer of organic material composed primary of β-chitin. The organic layer entirely envelopes the inorganic ceramic, and is thought to initiate, organise and inhibit the mineralisation of the inorganic material. From a mechanical perspective, the organic layer is also thought to provide a certain toughening effect to the material Applications Due to the unique physical, chemical and mechanical characteristics of this natural cellular material, a range of novel applications for the material have recently been investigated. Preparation of highly porous hydroxyapatite from cuttlefish bone Hydroxyapatite structures for tissue engineering applications have been produced by hydrothermal (HT) treatment of aragonite in the form of cuttlefish bone at 200 ̊C. Aragonite (CaCO3) monoliths were completely transformed into hydroxyapatite after 48 h of HT treatment. -
Cuttlefish (Sepia Sp.) Ink Extract As Antibacterial Activity Against Aeromonas Hydrophila
INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 8, ISSUE 11, NOVEMBER 2019 ISSN 2277-8616 Cuttlefish (Sepia Sp.) Ink Extract As Antibacterial Activity Against Aeromonas Hydrophila Faizal Zakaria, Mohamad Fadjar, Uun Yanuhar Abstract: Aeromonas hydrophila is a gram negative opportunist bacterium associated with aquatic animal disease. Cephalopod ink has shown potential antiretroviral activity. The ink extracts of cuttlefish showed antibacterial effect. This study aims to investigate the antibacterial activity of the methanolic extract of the ink of cuttlefish (Sepia sp.) against Aeromonas hydrophilla. The shadedried ink sample from approximately 30g ink sacs obtained from 15 animals were immersed separately in methanol (1:3 w/v) solvents for overnight. Dried extract was used for the experiments. Isolate of Aeromonas hydrophila was originated from Jepara Brackishwater Aquaculture Center. The average yield percentage of cuttlefish tintan extract obtained was 4.86%. The results of the MIC test in table 5. show that the highest average absorbance value was obtained at a concentration of 50 ppm which was equal to 1,716 nm and the lowest absorbance was obtained at a treatment dose of 300 ppm at 0.841 nm while the Mc Farland tube was 0.933 nm. The results of antibacterial test on table 2 showed antibacterial activity of cuttlefish ink extract at concentration negative control showed diameter zone of 5 ± 1.2 mm, at positive control showed diameter zone of 31 ± 1.2 mm, at 250 ppm result 19 ± 0.9 mm, at 300 ppm result 22 ± 1.4 mm, at 350 ppm result 31 ± 1.2 mm. Index Terms: Antibacterial; Cuttlefish Ink; Extract;Sepia sp.;Aeromonas hydrophila —————————— —————————— 1. -
Taxonomical and Morphometric Studies on Sepia Pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND ENGINEERING (IJESE) Vol. 7: 11- 22 (2016) http://www.pvamu.edu/research/activeresearch/researchcenters/texged/ international-journal Prairie View A&M University, Texas, USA Taxonomical and morphometric studies on Sepia pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt. Rafik Riad1; Manal Atta2; Youssef Halim2 and Noha Elebiary1 1- National Institute of Oceanography and Fisheries, Alexandria branch, Egypt. 2- Faculty of Science, Alexandria University, Egypt. ARTICLE INFO ABSTRACT Article History Morphometric characters of male and female Sepia pharaonis Received: Feb.2016 were investigated for samples obtained from commercial trawling Accepted: April, 2016 vessels of Suez Gulf, Egypt. Samples were collected (850 Available online: Jan. 2017 individuals) between winter 2014 to autumn 2014.Measurements for _________________ the smallest and largest male and female specimens, mean and Keywords: Taxonomy number of parts showed negative allometric growth (slope less than Morphology 1). Generally, the coefficient of determination R for MW, HL, HW, Sepia pharaonis FL, FW, FU.L, FU.W, AL and TL (0.9766, 0.9551, 0.9767, 0.9965, Suez Gulf 0.9453, 0.9779, 0.9712, 0.9580, 0.9685), respectively, were high for Red Sea most measurements. Egypt The present study reported some additional characters for this species that were not recorded before from other previous descriptions 1. INTRODUCTION Cephalopods are characterized by their activity, intelligent carnivorous creatures with highly advanced visual and nervous system (Boyle and Rodhouse, 2005) .They are soft- bodied bilaterally symmetrical animals with a well-developed head and body that consists of the muscular undivided mantle, mantle cavity houses the internal organs and also houses the external fins when present. -
Is Sepiella Inermis ‘Spineless’?
IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) e-ISSN:2278-3008, p-ISSN:2319-7676. Volume 12, Issue 5 Ver. IV (Sep. – Oct. 2017), PP 51-60 www.iosrjournals.org Is Sepiella inermis ‘Spineless’? 1 Visweswaran B * 1Department of Zoology, K.M. Centre for PG Studies (Autonomous), Lawspet Campus, Pondicherry University, Puducherry-605 008, India. *Corresponding Author: Visweswaran B Abstract: Many a report seemed to project at a noble notion of having identified some novel and bioactive compounds claimed to have been found from Sepiella inermis; but lagged to log their novelty scarcely defined due to certain technical blunders they seem to have coldly committed in such valuable pieces of aboriginal research works, reported to have sophistically been accomplished but unnoticed with considerable lack of significant finesse. They have dealt with finer biochemicals already been reported to have been available from S.inermis; yet, to one’s dismay, have failed to maintain certain conventional means meant for original research. This quality review discusses about the illogical math rooting toward and logical aftermath branching from especially certain spectral reports. Keywords: Sepiella inermis, ink, melanin, DOPA ----------------------------------------------------------------------------------------------------------------------------- ---------- Date of Submission: 16-09-2017 Date of acceptance: 28-09-2017 ----------------------------------------------------------------------------------------------------------------------------- ---------- I. Introduction Sepiella inermis is a demersally 1 bentho-nektonic 2, Molluscan, cephalopod ‗spineless‘ cuttlefish species, with invaluable juveniles 3, from the megametrical Indian coast 4-6, as incidental catches in shore seine 7 & 8, as egg clusters 9 from shallow waters 1 after monsoon at Vizhinjam coast 10 and Goa coast 11 of India and sundried, abundantly but rarely 8. II. -
Three-Dimensional Structural Evolution of the Cuttlefish Sepia Officinalis Shell from Embryo to Adult
Three-dimensional structural evolution of the cuttlefish Sepia officinalis shell from embryo to adult 6 stages Charles Le Pabic, Julien Derr, Gilles Luquet, Pascal-Jean Lopez, Laure Bonnaud-Ponticelli To cite this version: Charles Le Pabic, Julien Derr, Gilles Luquet, Pascal-Jean Lopez, Laure Bonnaud-Ponticelli. Three- dimensional structural evolution of the cuttlefish Sepia officinalis shell from embryo to adult6 stages. Journal of the Royal Society Interface, the Royal Society, 2019, 16 (158), pp.20190175. 10.1098/rsif.2019.0175. hal-02318453 HAL Id: hal-02318453 https://hal.archives-ouvertes.fr/hal-02318453 Submitted on 17 Oct 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1 2 Article type: Full length article 3 4 5 Three-dimensional structural evolution of the cuttlefish Sepia officinalis shell from embryo to adult 6 stages. 7 8 9 Charles Le Pabica, Julien Derrb, Gilles Luqueta, Pascal-Jean Lopeza, Laure Bonnaud-Ponticellia* 10 11 a Unité Biologie des organismes et écosystèmes aquatiques (BOREA), Muséum national d’Histoire 12 naturelle, UMR CNRS 7208, Université de Caen Normandie, Sorbonne Université, IRD 207, 13 Université des Antilles, 75005 Paris, France 14 b Laboratoire Matière et Systèmes Complexes (MSC), Université Paris Diderot, UMR CNRS 7057, 15 75205 Paris Cedex 13, France 16 17 *Corresponding author. -
The Biology and Ecology of the Common Cuttlefish (Sepia Officinalis)
Supporting Sustainable Sepia Stocks Report 1: The biology and ecology of the common cuttlefish (Sepia officinalis) Daniel Davies Kathryn Nelson Sussex IFCA 2018 Contents Summary ................................................................................................................................................. 2 Acknowledgements ................................................................................................................................. 2 Introduction ............................................................................................................................................ 3 Biology ..................................................................................................................................................... 3 Physical description ............................................................................................................................ 3 Locomotion and respiration ................................................................................................................ 4 Vision ................................................................................................................................................... 4 Chromatophores ................................................................................................................................. 5 Colour patterns ................................................................................................................................... 5 Ink sac and funnel organ -
Cephalopoda: Idiosepiidae) in Indonesian Waters
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Annalen des Naturhistorischen Museums in Wien Jahr/Year: 2007 Band/Volume: 108B Autor(en)/Author(s): Klepal Waltraud, von Byern J. Artikel/Article: Occurrence of Idiosepius pygmaeus (Cephalopoda, Idiosepiidae) in Indonesian waters. 137-144 ©Naturhistorisches Museum Wien, download unter www.biologiezentrum.at Ann. Naturhist. Mus. Wien 108 B 137- 144 Wien, Mai 2007 Occurrence of Idiosepius pygmaeus (Cephalopoda: Idiosepiidae) in Indonesian waters J. von Byern* & W. Klepal* Abstract Individuals of/, pygmaeus STEENSTRUP, 1881 have been rediscovered after more than 70 years at the type locality of/, pygmaeus hebereri GRIMPE, 1931 in Lombok, Indonesia. Occurrence of the animals between a flotsam of garbage indicates the ability to adapt to new habitats. Key words: Cephalopoda, Distribution, Idiosepiidae, Idiosepius pygmaeus, Indonesia Introduction Idiosepiidae are represented by a single genus with seven currently valid species, Idio- sepius biserialis Voss, 1962, /. macrocheir Voss, 1962, /. notoides BERRY, 1921, /. paradoxus (ORTMANN, 1888), /. picteti (JOUBIN, 1894), /. pygmaeus STEENSTRUP, 1881, /. thailandicus CHOTIYAPUTTA, OKUTANI & CHAITIAMVONG, 1991 (for a review see VON BOLETZKY & al. 2005). Their distribution stretches from Russia, Japan, the Indo- Pacific region to Tasmania as well as Moçambique (APPELLÖF 1898; SASAKI 1914; YAMAMOTO 1942; Voss 1962; OKUTANI 1973; Li 1983; Lu & PHILLIPS 1985; NATEE- WATHANA 1997; NESIS & al. 2002; VON BYERN & al. 2005). One conspicuous morpho- logical character of this genus is the adhesive organ located on the posterior part of the dorsal mantle side. This is used for attachment during the day to the lower leaf surfaces of sea grass or algae for camouflage. -
Endoprotease and Exopeptidase Activities in the Hepatopancreas Of
Original Article Fish Aquat Sci 15(3), 197-202, 2012 Endoprotease and Exopeptidase Activities in the Hepatopancreas of the Cuttlefish Sepia officinalis, the Squid Todarodes pacificus, and the Octopus Octopus vulgaris Cuvier Min Ji Kim1, Hyeon Jeong Kim1, Ki Hyun Kim1, Min Soo Heu2 and Jin-Soo Kim1* 1Department of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University, Tongyeong 650-160, Korea 2Department of Food Science and Nutrition/Institute of Marine Industry, Gyeongsang National University, Jinju 660-701, Korea Abstract This study examined and compared the exopeptidase and endoprotease activities of the hepatopancreas (HP) of cuttlefish, squid, and octopus species. The protein concentration in crude extract (CE) from octopus HP was 3,940 mg/100 g, lower than those in CEs from squid HP (4,157 mg/100 g) and cuttlefish HP (5,940 mg/100 g). With azocasein of pH 6 as a substrate, the total activity in HP CE of octopus was 31,000 U, lower than the values for cuttlefish (57,000 U) and squid (69,000 U). Regardless of sample type, the total activities of the CEs with azocasein as the substrate were higher at pH 6 (31,000–69,000 U) than at pH 9 (19,000–34,000 U). With L-leucine-p-nitroanilide (LeuPNA) of pH 6 as the substrate, the total activity of the HP CE from octopus was 138,000 U, higher than values from both cuttlefish HP (72,000 U) and squid HP (63,000 U). Regardless of sample type, the total activities of the CEs with LeuPNA as the substrate were higher at pH 6 (63,000–138,000 U) than at pH 9 (41,000–122,000 U). -
Synopsis of Phylum Mollusca (Molluscs)
Synopsis of Phylum Mollusca (Molluscs) Identifying Characteristics of Phylum: -second largest phylum of animals in terms of number of known species -most versatile body plan of all animals -triploblastic with true coelom (eucoelomate); protostome -bilateral symmetry; some with secondary assymetry -soft, usually unsegmented body consisting of head, foot and visceral mass -body usually enclosed by thin fleshy mantle -mantle usually secretes hard external shell -complete digestive tract, many with a radula, a rasping or scraping feeding organ, stomach, digestive glands, crystalline style, intestine -respiratory system of gills in aquatic forms or "lung"-like chamber in terrestrial forms -most with open circulatory system; body cavity (coelom) a haemocoel while cephalopods have a closed circulatory system -CNS is a ring of ganglia in head area with paired nerves and ganglia extending to other parts of the body -usually 1 pair of nephridia (=metanephridia) often called kidneys (not really true kidneys) -marine forms with characteristic trochophore larva; freshwater bivalves with glochidia larva Class: Polyplacophora (Chitons) -fairly sedentary; may move short distances to feed -head and cephalic sensory organs reduced -shell contains 8 overlapping plates on dorsal surface; can roll up like pill bugs/armadillo -most feed using radula to scrape algae from surface -mantle forms a girdle around margins of plates -broad ventral foot attaches firmly to substrate -gills suspended in mantle cavity along sides of thick -flat muscular foot Class: Scaphopoda