The Immune Response of the Scallop Argopecten Purpuratus Is Associated with Changes in the Host Microbiota Structure and Diversity T
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“Concha De Abanico” , Es Un Bivalvo Pectinido Que Habita En El Pacifico
IX EPRODUCCION DE ARGOPECTEN PURPURATUS Argopecten purpuratus “Concha de abanico” , es un bivalvo pectinido que habita en el Pacifico suroriental a lo largo de la costa del Perú y Chile, su distribucion abarca desde Paita Perú (5ºS) hasta Valparaiso, Chile (33ºS). – esta especie vive , en las aguas costera entre los 5 a 30 m de profundidad, (Cantillanez, 2000) su clasificacion taxonomica es la uiente: Phylum : Molusca Clase : Bivalva Sub-clase : Lamenlinobranchia Orden : Filibranchia Super familia : Pectinacea Familia : Pectinadae Genero : Chlamys Especie : Argopecten purpuratus. 1HABITAT: En el Perú existen numerosos bancos naturales de esta especie, tales como los de Bahía de Sechura y lobos de Tierra en Piura , Bahía de los Chimús y el Dorado en Chimbote , Bahía de Guaynuna en Casma y Bahía de Independencia y Paracas en Pisco. Se encuentran en aguas costeras entre 3 a 30 m, con fondos variables; fondo blando , arena endurecida, de conchuela con algas y cascajo, las Conchas de abanico vive normalmente en bahías protegidas del oleaje a temperatura entre 14 a 20ºC. esta especie requiere de agua bien oxigenada y con una salinidad de 34.4 a 34.9 por mil incluyendo este parámetro en el desarrollo, alimentación y reproducción. Esta especie tiene dos valvas en forma orbicular , siendo una de ellas mas convexa que la otra ,las valvas presentan expansiones laterales denominadas orejas que poseen además de 23 a 25 estrías y presentan anillos de crecimiento representado por líneas concéntricas. Esta especie es Hermafrodita, es decir posee los dos sexos masculino y femenino en una misma especie , pero funcionalmente son insuficientes ,siendo la producción de gametos (óvulos y espermatozoides ) en forma alternada, su ciclo reproductivo es continuo. -
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Vol. 23: 265–274, 2015 AQUATIC BIOLOGY Published online April 1 doi: 10.3354/ab00626 Aquat Biol OPENPEN ACCESSCCESS Reproduction reduces HSP70 expression capacity in Argopecten purpuratus scallops subject to hypoxia and heat stress Katherina Brokordt*, Hernán Pérez, Catalina Herrera, Alvaro Gallardo Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile ABSTRACT: In scallops, gonad production is highly demanding energetically, and reproduction usually occurs during spring−summer, a period of strong environmental changes. The synthesis of heat-shock proteins (HSPs) is a major mechanism of stress tolerance in animals, including scal- lops, and HSP expression contributes considerably to cellular energy demand. Therefore, repro- ductive investment may limit the availability of energy (in terms of ATP) for the expression of HSP in organisms exposed to environmental stress. We evaluated the stress response capacity of adult Argopecten purpuratus scallops to high temperature and hypoxia. Stress response capacity was assessed through gene expression (for temperature stress) and protein induction of 70 kD HSP at 3 reproductive stages: immature, mature and spawned. We also evaluated the effect of reproduc- tive status on the cellular ATP provisioning capacity through citrate synthase activity. Immature scallops exposed to thermal stress showed 1.3- and 1.5-fold increases in hsp70 mRNA and HSP70 protein levels, respectively, and those exposed to hypoxia doubled their level of HSP70 compared to non-stressed immature scallops. However, following gonad maturation and spawning, hsp70 mRNA increased by only 0.49- and 0.65-fold, respectively, after thermal stress and HSP70 protein levels of scallops exposed to thermal and hypoxia stressors did not differ from those of non- stressed animals. -
Physiological Effects and Biotransformation of Paralytic
PHYSIOLOGICAL EFFECTS AND BIOTRANSFORMATION OF PARALYTIC SHELLFISH TOXINS IN NEW ZEALAND MARINE BIVALVES ______________________________________________________________ A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy in Environmental Sciences in the University of Canterbury by Andrea M. Contreras 2010 Abstract Although there are no authenticated records of human illness due to PSP in New Zealand, nationwide phytoplankton and shellfish toxicity monitoring programmes have revealed that the incidence of PSP contamination and the occurrence of the toxic Alexandrium species are more common than previously realised (Mackenzie et al., 2004). A full understanding of the mechanism of uptake, accumulation and toxin dynamics of bivalves feeding on toxic algae is fundamental for improving future regulations in the shellfish toxicity monitoring program across the country. This thesis examines the effects of toxic dinoflagellates and PSP toxins on the physiology and behaviour of bivalve molluscs. This focus arose because these aspects have not been widely studied before in New Zealand. The basic hypothesis tested was that bivalve molluscs differ in their ability to metabolise PSP toxins produced by Alexandrium tamarense and are able to transform toxins and may have special mechanisms to avoid toxin uptake. To test this hypothesis, different physiological/behavioural experiments and quantification of PSP toxins in bivalves tissues were carried out on mussels ( Perna canaliculus ), clams ( Paphies donacina and Dosinia anus ), scallops ( Pecten novaezelandiae ) and oysters ( Ostrea chilensis ) from the South Island of New Zealand. Measurements of clearance rate were used to test the sensitivity of the bivalves to PSP toxins. Other studies that involved intoxication and detoxification periods were carried out on three species of bivalves ( P. -
Title the Anatomy of the Pacific Oyster, Crassostrea Gigas (Thurnberg
The Anatomy of the Pacific Oyster, Crassostrea gigas Title (Thurnberg)(Bivalvia : Ostreidae) Author(s) Evseev, G. A.; Yakovlev, Yu. M.; Li, Xiaoxu PUBLICATIONS OF THE SETO MARINE BIOLOGICAL Citation LABORATORY (1996), 37(3-6): 239-255 Issue Date 1996-12-25 URL http://hdl.handle.net/2433/176265 Right Type Departmental Bulletin Paper Textversion publisher Kyoto University Pub!. Seto Mar. Bioi. Lab., 37(3/6): 239-255, 1996 239 The Anatomy of the Pacific Oyster, Crassostrea gigas (Thurnberg) (Bivalvia: Ostreidae) G.A. EVSEEV, Yu. M. Y AKOVLEV Institute of Marine Biology, Far East Branch, Russian Academy of Sciences, Vladivostok 690041, Russia and XrAoxu Lr Institute of Oceanology, Academia Sinica, Qingdao 266071, P.R. China Abstract The anatomy of the soft body parts of the Pacific oyster Crassostrea gigas is presented. Anatomical features of mantles, gills, labial palps, pericardia! cavity, heart, oesophagus, stomach, gastric shield, crystalline style sac and intestine are described in detail. These structure in C. gigas are compared with those in closely related species. We suggest that some anatomical features provide taxonomic charac teristics that may be used to distinguish C. gigas from morphologically similar species within and between genera. Key words: Crassostrea gigas, soft organ morphology, taxonomy Introduction The morphological features of the shells have been used extensively in oyster taxonomy. However, the utility of shell features in oyster taxonomy is limited by the high level of their intra-specific variation (Tchang Si & Lou Tze-Kong, 1956; Menzel, 1973). The use of shell structural features in oyster taxonomy is particularly problematic between morphologically similar species from the genera Crassostrea and Saccostrea. -
Mitochondrial Genome of the Peruvian Scallop Argopecten Purpuratus (Bivalvia: Pectinidae)
Title Mitochondrial genome of the Peruvian scallop Argopecten purpuratus (Bivalvia: Pectinidae) Author(s) Marín, Alan; Alfaro, Rubén; Fujimoto, Takafumi; Arai, Katsutoshi Mitochondrial DNA, 26(5), 726-727 Citation https://doi.org/10.3109/19401736.2013.845760 Issue Date 2015 Doc URL http://hdl.handle.net/2115/60439 Type article (author version) File Information ManuscriptHUSCAP.pdf Instructions for use Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP Argopecten purpuratus mitogenome 1 Mitochondrial genome of the Peruvian scallop Argopecten 2 purpuratus (Bivalvia: Pectinidae) 3 4 Alan Marín1* • Rubén Alfaro2 • Takafumi Fujimoto1 • Katsutoshi Arai1 5 1Hokkaido University, Graduate School of Fisheries Sciences, Hakodate, Hokkaido, 6 Japan, 2 Biodes Laboratorios Soluciones Integrales S.C.R.L, Tumbes, Peru. 7 8 9 10 11 12 13 14 Correspondence: A. Marín. Hokkaido University, Graduate School of Fisheries 15 Sciences, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan. Tel. +81(90)6444 16 1955; fax: +81 138(40) 5537. E-mail: [email protected] 17 18 19 20 21 Keywords Control region, bivalve, coding region, gene arrangement 22 23 24 25 26 27 28 29 30 1 Argopecten purpuratus mitogenome 31 Abstract 32 The mitochondrial genome of the Peruvian scallop Argopecten purpuratus was 33 determined. The length of the mitochondrial coding region is 15,608 bp. A typical 34 bivalve mitochondrial composition was detected with 12 protein-coding genes, 35 two ribosomal RNA genes, and 21 transfer RNA genes, with the absence of the 36 atp8 gene. Fifty percent of the protein-coding genes use typical ATG start codon, 37 whereas five genes utilize ATA as their start codon. -
Embryonic and Larval Development of Ensis Arcuatus (Jeffreys, 1865) (Bivalvia: Pharidae)
EMBRYONIC AND LARVAL DEVELOPMENT OF ENSIS ARCUATUS (JEFFREYS, 1865) (BIVALVIA: PHARIDAE) FIZ DA COSTA, SUSANA DARRIBA AND DOROTEA MARTI´NEZ-PATIN˜O Centro de Investigacio´ns Marin˜as, Consellerı´a de Pesca e Asuntos Marı´timos, Xunta de Galicia, Apdo. 94, 27700 Ribadeo, Lugo, Spain (Received 5 December 2006; accepted 19 November 2007) ABSTRACT The razor clam Ensis arcuatus (Jeffreys, 1865) is distributed from Norway to Spain and along the British coast, where it lives buried in sand in low intertidal and subtidal areas. This work is the first study to research the embryology and larval development of this species of razor clam, using light and scanning electron microscopy. A new method, consisting of changing water levels using tide simulations with brief Downloaded from https://academic.oup.com/mollus/article/74/2/103/1161011 by guest on 23 September 2021 dry periods, was developed to induce spawning in this species. The blastula was the first motile stage and in the gastrula stage the vitelline coat was lost. The shell field appeared in the late gastrula. The trocho- phore developed by about 19 h post-fertilization (hpf) (198C). At 30 hpf the D-shaped larva showed a developed digestive system consisting of a mouth, a foregut, a digestive gland followed by an intestine and an anus. Larvae spontaneously settled after 20 days at a length of 378 mm. INTRODUCTION following families: Mytilidae (Redfearn, Chanley & Chanley, 1986; Fuller & Lutz, 1989; Bellolio, Toledo & Dupre´, 1996; Ensis arcuatus (Jeffreys, 1865) is the most abundant species of Hanyu et al., 2001), Ostreidae (Le Pennec & Coatanea, 1985; Pharidae in Spain. -
Draft Genome of the Peruvian Scallop Argopecten Purpuratus
GigaScience, 7, 2018, 1–6 doi: 10.1093/gigascience/giy031 Advance Access Publication Date: 2 April 2018 Data Note DATA NOTE Draft genome of the Peruvian scallop Argopecten Downloaded from https://academic.oup.com/gigascience/article/7/4/giy031/4958978 by guest on 29 September 2021 purpuratus Chao Li1, Xiao Liu2,BoLiu1, Bin Ma3, Fengqiao Liu1, Guilong Liu1, Qiong Shi4 and Chunde Wang 1,* 1Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, China, 2Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China, 3Qingdao Oceanwide BioTech Co., Ltd., Qingdao 266101, China and 4Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI Academy of Marine Sciences, BGI Marine, BGI, Shenzhen 518083, China *Correspondence address. Chunde Wang, Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, China. Tel: +8613589227997; E-mail: [email protected] http://orcid.org/0000-0002-6931-7394 Abstract Background: The Peruvian scallop, Argopecten purpuratus, is mainly cultured in southern Chile and Peru was introduced into China in the last century. Unlike other Argopecten scallops, the Peruvian scallop normally has a long life span of up to 7 to 10 years. Therefore, researchers have been using it to develop hybrid vigor. Here, we performed whole genome sequencing, assembly, and gene annotation of the Peruvian scallop, with an important aim to develop genomic resources for genetic breeding in scallops. Findings: A total of 463.19-Gb raw DNA reads were sequenced. A draft genome assembly of 724.78 Mb was generated (accounting for 81.87% of the estimated genome size of 885.29 Mb), with a contig N50 size of 80.11 kb and a scaffold N50 size of 1.02 Mb. -
(Mollusca: Bivalvia). 3
BASTERIA, 49: 81-84,1975 Notes material of the Pectinidae on type family (Mollusca: Bivalvia). 3. On the identity of Pecten solidulus Reeve, 1853, and Pecten commutatus Monterosato, 1875 H.P. Wagner c/o Rijksmuseum van Natuurlijke Historie, Postbus 9517, 2300 RA Leiden The identity of Pecten solidulus Reeve, 1853, a species from an unknown locality, has always been subject to debate. As type species of Argopecten Monterosato, 1889, by Monterosato himself the of the subsequent designation by (1899: 193), identity genus is connected with the identity of the species. Initially Monterosato (1889: 20) relegated his Pecten which he describedin the of solidulus. This commutatus, 1875, to synonymy P. synonymy was regarded as erroneous by Dautzenberg & Fischer (1906: 59). Grau has (1959: 93) regarded P. commutatus as type species for the genus Argopecten, because in his opinion P. solidulus was unidentifiable.Keen (1960: 101) has pointed out that he did so incorrectly. Clarke (1965: 174) has used the name Plagioctenium Dall, 1898 (type species by original designation: Pecten ventricosus Sowerby, 1842 = Pecten circularis Sowerby, 1835), instead of Argopecten, for a group of American Pectinidae, maintaining that the type species of Argopecten is not identifiable. Waller (1969: 33) has considered P. solidulus more likely to be Argopecten circularis rather than A. gibbus (L., 1758), these last two species being most similarto P. solidulus. based his conclusion He on measurements taken from photographs of the holotype of P. solidulus, comparing them with equally sized A. circularis and A. gibbus. Hertlein (1969: N356) supported Waller's opinion, meanwhile treating Argopecten as a subgenus of Waller considered and also doubted Chlamys. -
Maturation of the Calico Scallop, Argopecten Gibbus, Determined by Ovarian Color Changes George C
Northeast Gulf Science Volume 3 Article 5 Number 2 Number 2 12-1979 Maturation of the Calico Scallop, Argopecten gibbus, Determined by Ovarian Color Changes George C. Miller National Marine Fisheries Service Donald M. Allen National Marine Fisheries Service T.J. Costello National Marine Fisheries Service J. Harold Hudson U.S. Geological Survey DOI: 10.18785/negs.0302.05 Follow this and additional works at: https://aquila.usm.edu/goms Recommended Citation Miller, G. C., D. M. Allen, T. Costello and J. Hudson. 1979. Maturation of the Calico Scallop, Argopecten gibbus, Determined by Ovarian Color Changes. Northeast Gulf Science 3 (2). Retrieved from https://aquila.usm.edu/goms/vol3/iss2/5 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Gulf of Mexico Science by an authorized editor of The Aquila Digital Community. For more information, please contact [email protected]. Miller et al.: Maturation of the Calico Scallop, Argopecten gibbus, Determined b Northeast Gulf Sciences Vol. 3, No.2, p. 96-103 December 1979 MATURATION OF THE CALICO SCALLOP, Argopecten gibbus, DETERMINED BY OVARIAN COLOR CHANGES 1 George C. Miller, Donald M. Allen, and T.J. Costello Southeast Fisheries Center National Marine Fisheries Service, NOAA 75 Virginia Beach Drive Miami, FL 33149 and J. Harold Hudson U.S. Geological Survey Fisher Island. Station Miami Beach, FL 33139 ABSTRACT:: Ovarian color was described for the calico scallop, Argopecten gibbus, by sizes and seasons from May 1970 to October 1971 on the Cape Canaveral grounds, Florida. -
Chesapecten, a New Genus of Pectinidae (Mollusca: Bivalvia) from the Miocene and Pliocene of Eastern North America
Chesapecten, a New Genus of Pectinidae (Mollusca: Bivalvia) From the Miocene and Pliocene of Eastern North America GEOLOGICAL SURVEY PROFESSIONAL PAPER 861 Chesapecten) a New Genus of Pectinidae (Mollusca: Bivalvia) From the Miocene and Pliocene of Eastern North America By LAUCK W. WARD and BLAKE W. BLACKWELDER GEOLOGIC.AL SURVEY PROFESSIONAL PAPER 861 A study of a stratigraphically important group of Pectinidae with recognition of the earliest described and figured Anzerican fossil UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1975 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Ward, Lauck W Chesapecten, a new genus of Pectinidae (Mollusca, Bivalvia) from the Miocene and Pliocene of eastern North America. (Geological Survey professional paper ; 861) Includes bibliography and index. Supt. of Docs. no.: I 19.16:861 1. Chesapecten. 2. Paleontology-Tertiary. 3. Paleontology-North America. I. Blackwelder, Blake W., joint author. II. Title III. Series: United States. Geological Survey. Professional paper : 861. QE812.P4W37 564'.11 74-26694 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402- Price $1.45 (paper cover) Stock Number 2401-02574 CONTENTS Page Abstract --------------------------------------------------------------------------------- 1 Introduction -------------------------------------------------.----------------------------- 1 Acknowledgments ______________________________ -
The Fate of Spondylus Stocks (Bivalvia: Spondylidae) in Ecuador: Is Recovery Likely? Author(S): Annika K
The Fate of Spondylus Stocks (Bivalvia: Spondylidae) in Ecuador: Is Recovery Likely? Author(s): Annika K. Mackensen, Thomas Brey and Stanislaus Sonnenholzner Source: Journal of Shellfish Research, 30(1):115-121. 2011. Published By: National Shellfisheries Association DOI: 10.2983/035.030.0117 URL: http://www.bioone.org/doi/full/10.2983/035.030.0117 BioOne (www.bioone.org) is an electronic aggregator of bioscience research content, and the online home to over 160 journals and books published by not-for-profit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Journal of Shellfish Research, Vol. 30, No. 1, 115–121, 2011. THE FATE OF SPONDYLUS STOCKS (BIVALVIA: SPONDYLIDAE) IN ECUADOR: IS RECOVERY LIKELY? ANNIKA K. MACKENSEN,1,2* THOMAS BREY2 AND STANISLAUS SONNENHOLZNER3 1Nazca Institute for Marine Research, Quito, Ecuador; 2Alfred Wegener Institute for Polar and Marine Research (AWI), Bremerhaven, Germany; 3Centro Nacional de Acuicultura e Investigaciones Marinas, San Pedro- Manglaralto, Ecuador ABSTRACT The bivalve genus Spondylus, with its large and magnificent shells, has played an important cultural and economic role in coastal Ecuador that reaches back to Valdivian and Incan times. -
Shelled Molluscs
Encyclopedia of Life Support Systems (EOLSS) Archimer http://www.ifremer.fr/docelec/ ©UNESCO-EOLSS Archive Institutionnelle de l’Ifremer Shelled Molluscs Berthou P.1, Poutiers J.M.2, Goulletquer P.1, Dao J.C.1 1 : Institut Français de Recherche pour l'Exploitation de la Mer, Plouzané, France 2 : Muséum National d’Histoire Naturelle, Paris, France Abstract: Shelled molluscs are comprised of bivalves and gastropods. They are settled mainly on the continental shelf as benthic and sedentary animals due to their heavy protective shell. They can stand a wide range of environmental conditions. They are found in the whole trophic chain and are particle feeders, herbivorous, carnivorous, and predators. Exploited mollusc species are numerous. The main groups of gastropods are the whelks, conchs, abalones, tops, and turbans; and those of bivalve species are oysters, mussels, scallops, and clams. They are mainly used for food, but also for ornamental purposes, in shellcraft industries and jewelery. Consumed species are produced by fisheries and aquaculture, the latter representing 75% of the total 11.4 millions metric tons landed worldwide in 1996. Aquaculture, which mainly concerns bivalves (oysters, scallops, and mussels) relies on the simple techniques of producing juveniles, natural spat collection, and hatchery, and the fact that many species are planktivores. Keywords: bivalves, gastropods, fisheries, aquaculture, biology, fishing gears, management To cite this chapter Berthou P., Poutiers J.M., Goulletquer P., Dao J.C., SHELLED MOLLUSCS, in FISHERIES AND AQUACULTURE, from Encyclopedia of Life Support Systems (EOLSS), Developed under the Auspices of the UNESCO, Eolss Publishers, Oxford ,UK, [http://www.eolss.net] 1 1.