DOCSLIB.ORG

Shell Layers and Structures in the Brackishwater Bivalve, Corbicula Japonica

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Shell Layers and Structures in the Brackishwater Bivalve, Corbicula Japonica ΐῒ῏ῑῐ ῍The Quaternary Research῎ ./ ῍ / ῎ p. -+1ῌ--+ Oct. ,**0 Shell Layers and Structures in the BrackishWater Bivalve, Corbicula japonica Keiko Yamaguchi* +,a, Koji Seto* ,, Katsumi Takayasu* - and Morihiro Aizaki* + Bivalve shells contain a great deal of information about the animal’s growth history and local environment. Opaque and translucent layers are observed in the outer shell of Corbicula japonica. Detailed imaging with scanning electron microscopy and laser microscopy show that microstructural features are di#erent between the two layers. The di#erence is mainly determined by the content of organic materials ; the translu- cent layer contains less organic matrix than the opaque layer. A marking experiment revealed that the translucent layers were formed in the period from early summer to winter, varying between individuals. If there is no formation of an opaque layer and shell growth rates are low in autumn, the translucent layer is accompanied by an annual ring on the shell surface. The period of formation of the layers is synchronized with the annual cycles of stable isotope values, especially with oxygen (d+2O). By combining the observation of the shell structure with stable isotope analysis, the shell of C. japonica can be used to provide information for reconstructing ecology and estuarine environments in the past. Keywords : brackish water, bivalve, Corbicula japonica, microstructure, shell growth, translucent layer, stable isotopes their response to environmental variation (e.g. I. Introduction Carter, +32* ; Dillon and Clark, +32*). Shell Bivalve shells can contain a detailed record microgrowth patterns are useful for recon- of the animal’s growth history and environ- structing tidal cycles or sea-level in the time and ment, similar to other accretionary growth skel- place the animal lived (e.g. Lutz and Rhoads, etons, such as corals or tree rings. The infor- +32* ; Ohno, +323). Compared to many other car- mation stored within a bivalve’s hard parts is bonate skeletons (e.g. foraminifera, ostracods, very useful for the reconstruction of environ- nannofossils), the bivalve shell is very well mental changes. It is well known that bivalve suited for the reconstruction of detailed time shell chemistry holds a record of environmental series of environmental change covering the change encountered by the animal. The car- life of the animal. bonate shell can provide a record of oxygen Shell also contains a great deal of informa- isotope variations (d+2O) that is often used as tion on the age and growth properties of the paleo-thermometer (e.g. Craig, +30/ ; Rye and animal. Age determination based on annual Sommer, +32*). Growth-line analysis is also rings on the shell surface has been carried out recognized as a useful method to investigate in many marine bivalves (e.g. Orton, +3,0 ; Naka- the life history and growth rates of clams and oka, +33,). An annual ring is, in many cases, a Received April 1, ,**0. Accepted June +3, ,**0. This paper was presented on the Symposiumofthe,**/th Annual MeetingoftheJapanAssocoationfor Quaternary Reaeach. * + Faculty of Life and Environmental Science, Shimane University. +*0* Nishikawatsu, Matsue, 03*ῌ2/*.,Japan. * , Research Center for Coastal Lagoon Environments, Shimane University. +*0* Nishikawatsu, Matsue, 03*ῌ2/*.,Japan. * - Shimane University. +*0* Nishikawatsu, Matsue, 03*ῌ2/*.,Japan. *a Corresponding author:[email protected]. ac. jp 318 Yamaguchi, K., Seto, K., Takayasu, K. and Aizaki, M. Oct. ,**0 slow-growth zone formed when the shell growth served that the annual ring is associated with stopped in winter (winter break). The spawn- the translucent layer within the mineralized ing break in shell growth is also recognized shell of C. japonica, collected from Lake Aba- in many marine bivalves (e. g. Rhoads and shiri. He recognized that the shell of C. japonica Pannella, +31* ; Sato, +33/). has two characteristic layers, translucent and Though marine bivalves have often been the opaque, and he suggested that the translucent objects of such studies, applying these tech- layer is formed when the shell growth rate is niques to brackish water bivalves has not been low. The translucent layer has been recognized common. As environmental variation associ- in other bivalves, e.g. Anadara (Kobayashi, +310), ated with climate change may be amplified at Gomphina (Kobayashi, +313), Mytilus (Hosomi, the boundary between land and sea, studies of +323), and been regarded as an annual marker. environmental records stored in the shell geo- Kobayashi (+310) reported that shell structure chemistry and microstructure of brackish bi- of the outer shell layer of Anadara broughtonii valves become more valuable. changes between crossed lamellar and compos- Corbicula japonica is an endemic bivalve as- ite prismatic structures alternately, and that sociated with the low salinity brackish environ- the crossed lamellar structure is rather trans- ment. It inhabits brackish lakes and estuaries lucent and formed accompanied with a slow- from Hokkaido to Kyushu in Japan, and is a growth zone. Hosomi (+323) observed white very important species for inland fisheries in rings corresponding to the translucent layer in Japan (Nakamura, ,***). Paleo-environmental shells of Mytilus galloprovincialis, and used them information can be provided from the shells of for age determination. But he did not describe C. japonica, not only from fossil deposits but the microstructure of the increment nor the also from shell middens associated with an- time of formation of the rings, and whether it is cient human habitation. related to environmental factors or not. Prezant Kobayashi and Takayasu (+33/) studied shell et al. (+322) investigated color change in fresh- microstructure of Japanese brackish-water cor- water Corbiculid shell layers, and argued that biculids in detail and observed that the outer color change occurs when an animal is exposed shell layer of C. japonica is composed of the com- to a significant stress. This change is between plex crossed lamellar structure (finely-crossed purple and white layers in the shell. Kobayashi type). Takayasu et al. (+330) carried out a mark- and Takayasu (+33/) also mentioned that the ing experiment to examine the process of mi- calcareous shell layers of Corbiculidae species crogrowth increments of C. japonica in Lake are composed of wider dark and narrower light Shinji, and found that the microgrowth pattern band arranged alternately. These probably cor- showed neither cyclicity nor periodicity. They respond to the translucent and opaque layers, suggested that the formation of microgrowth but there has been no detailed observation or increments was most likely influenced by com- description of these shell layers in the litera- plex changes in the brackish water environ- ture. ment as well as by physiological rhythms and Before shell layers can be used as the basis of individual variation in these physiological fac- studying variation in the brackish water envi- tors. ronment, more work needs to be done on shell On the contrary, several studies on shell structure and growth banding, particularly fac- growth and age determination of C. japonica tors controlling opaque and translucent layers. were carried out based on annual rings in shell The purpose of this study is to describe the (Utoh, +32+ ; Takada et al., ,**+ ; Oshima et al., structural di#erence between the opaque and ,**.). Although some specimens have clearly translucent layers and to document the forma- recognizable annual rings, it is usually di$cult tion of the two layers. Finally we will examine to identify annual rings on the shell surface, the possibility of using these layers for the age owing to the thick, dark colored periostracum determination, growth analysis, and paleo-envi- and the existence of irregular concentric rings ronmental reconstruction. covering the surface of the shell. Utoh (+32+)ob- ,**0 ῒ +* ῑ Shell layers in Corbicula japonica 319 are secondary emission images (SEI) taken at II. Materials and methods accelerating voltages of /4* or +* kV. A laser +. Materials microscope (KEYENCE VKῌ2/**) was used to Living individuals of Corbicula japonica were produce a -D image of the etched shell section. collected between December +333 and June ,**/ The outer shell layer of one sectioned valve from Lakes Shinji, Jinzai, and Nakaumi, eastern was sub-sampled at fine spatial resolution (*4. Shimane Prefecture, southwest Japan (Fig. +). mm thick layers) along the shell surface to ex- Specimens used in this study were about , cm amine the change of oxygen and carbon stable in length, typical of adult-size clams. They lived isotope values throughout growth and in rela- in shallow water along the coast of these brack- tion to shell layers. A gas-ratio mass-spectro- ish lakes. Because the tidal amplitude in these meter (Finnigan MAT delta S) was used to lakes is very small, clams remain covered by measure the oxygen and carbon stable isotope water at all times. ratios. Analyses were calibrated relative to The salinity of the water at the habitat of C. the PDB standard and the standard deviation japonica in Lake Shinji is about / psu. That of of repeated internal standards was less than Lake Jinzai is somewhat variable, between -῍ ῎*.*/ῐ. +2 psu. The salinity of the shallow water in -. Field experimental methodology Lake Nakaumi is higher, +* to ,* psu. The wa- A field experiment was conducted to analyze ter temperature ranged from , to -,῏ in all the the growth of the C. japonica and to test the lakes. timing of formation of the translucent layer. ,. Observation of shell structure Two artificial ponds were used for culturing A single valve from each specimen was sec- C. japonica beside Lake Jinzai. Brackish lake tioned from umbo to the ventral margin to ex- water was continuously supplied to the ponds. amine the shell structure. The sectioned valve Pond dimensions were +* m in length, / min was observed with a binocular microscope, and width and ,*῍0* cm in depth. the thickness of the layer formed each month Clams were distributed throughout one of was measured.
Load more

Recommended publications
  • Native Unionoida Surveys, Distribution, and Metapopulation Dynamics in the Jordan River-Utah Lake Drainage, UT
    Version 1.5 Native Unionoida Surveys, Distribution, and Metapopulation Dynamics in the Jordan River-Utah Lake Drainage, UT Report To: Wasatch Front Water Quality Council Salt Lake City, UT By: David C. Richards, Ph.D. OreoHelix Consulting Vineyard, UT 84058 email: [email protected] phone: 406.580.7816 May 26, 2017 Native Unionoida Surveys and Metapopulation Dynamics Jordan River-Utah Lake Drainage 1 One of the few remaining live adult Anodonta found lying on the surface of what was mostly comprised of thousands of invasive Asian clams, Corbicula, in Currant Creek, a former tributary to Utah Lake, August 2016. Summary North America supports the richest diversity of freshwater mollusks on the planet. Although the western USA is relatively mollusk depauperate, the one exception is the historically rich molluskan fauna of the Bonneville Basin area, including waters that enter terminal Great Salt Lake and in particular those waters in the Jordan River-Utah Lake drainage. These mollusk taxa serve vital ecosystem functions and are truly a Utah natural heritage. Unfortunately, freshwater mollusks are also the most imperiled animal groups in the world, including those found in UT. The distribution, status, and ecologies of Utah’s freshwater mussels are poorly known, despite this unique and irreplaceable natural heritage and their protection under the Clean Water Act. Very few mussel specific surveys have been conducted in UT which requires specialized training, survey methods, and identification. We conducted the most extensive and intensive survey of native mussels in the Jordan River-Utah Lake drainage to date from 2014 to 2016 using a combination of reconnaissance and qualitative mussel survey methods.
    [Show full text]
  • Symposium Full Program
    11.4 Center for Condensed Matter Sciences, NTU 11.5-6 Howard Civil Service International House 2019 Organizer Ecological Engineering Research Center, National Taiwan University Co-Organizers College of Bioresources and Agriculture, National Taiwan University Wisdom Informatics Solutions for Environment Co., Ltd Symposium Program Sponsors Biodiversity Research Center, Academia Sinica The Japanese Association of Benthology Marine National Park Headquartrers, Taiwan Ministry of Science and Technology, Taiwan The Plankton Society of Japan Ocean Conversation Administration, Ocean Affairs Council, Taiwan Contents Welcome Messages .........................................................................2 More Welcomes and Greetings from Previous AMBS Chairmans .................................................3 Symposium Schedule ......................................................................7 Conference Information ................................................................8 Symposium Venue Map ..................................................................9 Information for the Presenters .................................................11 Student Presentation Contest Rules .......................................12 Presentation Schedule .................................................................13 Poster Presentation Schedule ...................................................20 Keynote Speaker Abstracts & Biographies ............................25 Organizers and Sponsors.............................................................32
    [Show full text]
  • Nabs 2004 Final
    CURRENT AND SELECTED BIBLIOGRAPHIES ON BENTHIC BIOLOGY 2004 Published August, 2005 North American Benthological Society 2 FOREWORD “Current and Selected Bibliographies on Benthic Biology” is published annu- ally for the members of the North American Benthological Society, and summarizes titles of articles published during the previous year. Pertinent titles prior to that year are also included if they have not been cited in previous reviews. I wish to thank each of the members of the NABS Literature Review Committee for providing bibliographic information for the 2004 NABS BIBLIOGRAPHY. I would also like to thank Elizabeth Wohlgemuth, INHS Librarian, and library assis- tants Anna FitzSimmons, Jessica Beverly, and Elizabeth Day, for their assistance in putting the 2004 bibliography together. Membership in the North American Benthological Society may be obtained by contacting Ms. Lucinda B. Johnson, Natural Resources Research Institute, Uni- versity of Minnesota, 5013 Miller Trunk Highway, Duluth, MN 55811. Phone: 218/720-4251. email:[email protected]. Dr. Donald W. Webb, Editor NABS Bibliography Illinois Natural History Survey Center for Biodiversity 607 East Peabody Drive Champaign, IL 61820 217/333-6846 e-mail: [email protected] 3 CONTENTS PERIPHYTON: Christine L. Weilhoefer, Environmental Science and Resources, Portland State University, Portland, O97207.................................5 ANNELIDA (Oligochaeta, etc.): Mark J. Wetzel, Center for Biodiversity, Illinois Natural History Survey, 607 East Peabody Drive, Champaign, IL 61820.................................................................................................................6 ANNELIDA (Hirudinea): Donald J. Klemm, Ecosystems Research Branch (MS-642), Ecological Exposure Research Division, National Exposure Re- search Laboratory, Office of Research & Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268- 0001 and William E.
    [Show full text]
  • Human Health Risk Assessments of Trace Metals on the Clam Corbicula Javanica in a Tropical River in Peninsular Malaysia
    International Journal of Environmental Research and Public Health Article Human Health Risk Assessments of Trace Metals on the Clam Corbicula javanica in a Tropical River in Peninsular Malaysia Chee Kong Yap 1,* , Koe Wei Wong 1 , Salman Abdo Al-Shami 2 , Rosimah Nulit 1 , Wan Hee Cheng 3, Ahmad Zaharin Aris 4, Moslem Sharifinia 5 , Alireza Riyahi Bakhtiari 6, Hideo Okamura 7, Muhammad Saleem 8, Weiyun Chew 9, Mohamad Saupi Ismail 10 and Khalid Awadh Al-Mutairi 11 1 Department of Biology, Faculty of Science, Universiti Putra Malaysia, Selangor 43400, Malaysia; [email protected] (K.W.W.); [email protected] (R.N.) 2 Indian River Research and Education Center, IFAS, University of Florida, Fort Pierce, FL 34945, USA; [email protected] 3 Faculty of Health and Life Sciences, Inti International University, Sembilan 71800, Malaysia; [email protected] 4 Department of Environmental Sciences, Faculty of Environmental Studies, Universiti Putra Malaysia, Selangor 43400, Malaysia; [email protected] 5 Shrimp Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Bushehr 7516989177, Iran; moslem.sharifi[email protected] 6 Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Mazandaran 46417-76489, Iran; [email protected] 7 Faculty of Maritime Sciences, Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan; [email protected] 8 Department of Chemistry, Government Post
    [Show full text]
  • Chemical Communication in Songbirds
    Western University Scholarship@Western Electronic Thesis and Dissertation Repository 4-15-2020 10:30 AM Chemical Communication in Songbirds Leanne A. Grieves The University of Western Ontario Supervisor MacDougall-Shackleton, Elizabeth A. The University of Western Ontario Graduate Program in Biology A thesis submitted in partial fulfillment of the equirr ements for the degree in Doctor of Philosophy © Leanne A. Grieves 2020 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Behavior and Ethology Commons, Integrative Biology Commons, and the Molecular Genetics Commons Recommended Citation Grieves, Leanne A., "Chemical Communication in Songbirds" (2020). Electronic Thesis and Dissertation Repository. 6926. https://ir.lib.uwo.ca/etd/6926 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract Avian chemical communication has been understudied due to the misconception that olfaction is unimportant or even lacking in birds. Early work focused on the olfactory foraging capabilities of seabirds because of their ecology (open ocean foraging) and large olfactory bulbs. In contrast, olfaction in passerine birds, comprising over half of all extant avian taxa, was long overlooked due to their relatively small olfactory bulbs. It is now well established that passerines can smell, and their olfactory acuity is comparable to that of macrosmatic mammals such as rats. Much of our theory on communication and mate choice has involved studying visual and acoustic signals in birds, especially passerines.
    [Show full text]
  • A Comparative Study of Cellulase and Hemicellulase Activities of Brackish Water Clam Corbicula Japonica with Those of Other Marine Veneroida Bivalves
    2812 The Journal of Experimental Biology 212, 2812-2818 Published by The Company of Biologists 2009 doi:10.1242/jeb.031567 A comparative study of cellulase and hemicellulase activities of brackish water clam Corbicula japonica with those of other marine Veneroida bivalves Kentaro Sakamoto and Haruhiko Toyohara* Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan *Author for correspondence ([email protected]) Accepted 9 June 2009 SUMMARY Corbicula japonica is a typical brackish water bivalve species belonging to the order Veneroida, and it is the most important inland fishery resource in Japan. Corbicula japonica has been suggested to assimilate organic matter from terrestrial plants, unlike Ruditapes philippinarum and Mactra veneriformis, which selectively assimilate organic matter of marine origin. This led us to hypothesize that C. japonica, despite being a suspension feeder, could assimilate cellulosic materials derived from terrestrial plants. In the present study, we measured cellulase and hemicellulase activities in the crystalline styles of C. japonica and other commercially important Veneroida bivalve species in Japan: Ruditapes philippinarum, Meretrix lamarckii and Meretrix lusoria. Corbicula japonica demonstrated notably higher cellulase, xylanase and β-mannanase activities than the other marine bivalves, suggesting that this species possesses a far greater biochemical capacity to break down the structural polysaccharides of plant cell walls than the other species. In contrast, the β-1,3-glucanase and pectinase activities of C. japonica were similar to or even lower than those of the others. This is possibly due to the presence of these polysaccharides in the cell walls of diatoms, a principal food of most marine bivalves.
    [Show full text]
  • (Bivalvia, Corbiculidae) Na América Do Sul: Histórico De Introdução, Linhagens Androgênicas E Genética Da Invasão
    UNIVERSIDADE FEDERAL DO PARANÁ SANDRA LUDWIG CORBICULA SPP. (BIVALVIA, CORBICULIDAE) NA AMÉRICA DO SUL: HISTÓRICO DE INTRODUÇÃO, LINHAGENS ANDROGÊNICAS E GENÉTICA DA INVASÃO CURITIBA 2015 1 SANDRA LUDWIG CORBICULA (BIVALVIA, CORBICULIDAE) SPP. NA AMÉRICA DO SUL: HISTÓRICO DE INTRODUÇÃO, LINHAGENS ANDROGÊNICAS E GENÉTICA DA INVASÃO Tese apresentada ao Programa de Pós- Graduação em Ciências Biológicas – Zoologia, Setor de Ciências Biológicas da Universidade Federal do Paraná, como requisito parcial à obtenção do título de Doutor em Ciências Biológicas área de concentração Zoologia. Orientador: Walter A. P. Boeger, PhD Co-orientador: Dr. Gustavo Darrigran CURITIBA 2015 2 3 AGRADECIMENTOS Ao professor Dr. Walter A. Boeger, por todos os ensinamentos compartilhados, paciência e compreensão. Ao meu co-orientador Professor Dr. Gustavo Darrigran pela difícil tarefa de me co-orientar à distância e por todos os ensinamentos compartilhados durante os quatro anos. À minha querida família, aos meus pais - Francisco e Luzia Ludwig – por terem me apoiado, por sempre estarem com as mãos estendidas a mim. Obrigada por todos os sacrifícios sofridos pela minha vida e minha formação. A minha irmã Luana, pelo exemplo de coragem, determinação, pelo incentivo, pelas sugestões e correções, e acima de tudo, pela amizade incondicional. Agradeço ao meu marido, André Tochetto, pelo companheirismo e pelos esforços em me incentivar desde o começo a nunca desistir de meus sonhos e, batalhar para ser uma profissional dedicada. À minha amiga, Nefertiris por ter me ajudado, apoiado, puxado minha orelha, me consolado e, acima de tudo, pela sua amizade. À minha amiga Patrícia que tem me ajudado com as inúmeras discussões sobre o futuro da área de invasões no Brasil.
    [Show full text]
  • Shell Growth and Age Determination of the Brackish Water Bivalve Corbicula Japonica in Lake Shinji, Japan
    Blackwell Science, LtdOxford, UK FISFisheries Science0919-92682004 Blackwell Science Asia Pty Ltd 704August 2004 847 Growth and age of Corbicula japonica K Oshima et al. 10.1111/j.1444-2906.2004.00847.x Original Article601610BEES SGML FISHERIES SCIENCE 2004; 70: 601–610 Shell growth and age determination of the brackish water bivalve Corbicula japonica in Lake Shinji, Japan Kazuhiro OSHIMA,1* Naoki SUZUKI,1 Mikio NAKAMURA2 AND Kazumi SAKURAMOTO1 1Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Minato, Tokyo 108-8477 and 2Japan Corbicula Research Institute, Tamayu, Shimane 699-0204, Japan ABSTRACT: Shell growth and age determination of Corbicula japonica were investigated from samples collected monthly at two sites and field growth experiments from November 1999 to Novem- ber 2000 in Lake Shinji. Both specimens did not grow in winter when the water temperature was below 11∞C, but grew rapidly from spring to early summer when the water temperature rose from 15∞C to 30∞C, before further growing slowly from summer to autumn after the main breeding period. The monthly marginal growth distribution of the samples indicated that the concentric groove on the shell surface was an annual growth ring. It is concluded that the age of C. japonica in the i-ring group when the shell growth resumed in spring was i + 0.5 (i = 1, 2, · · ·), because the first true growth ring was formed at 0–2 mm in shell length, which then faded with growth. Lee’s phenomenon was observed in the age determination results, and thus the growth coefficient and the asymptotic shell length of the von Bertalanffy growth equation were not estimated from the samples.
    [Show full text]
  • Invertebrate Fauna of Korea
    Inver tebrate Fauna of Korea Volume 19, Number 7 Bivalves III Mollusca: Bivalvia: Unionoida: Unionidae Veneroida: Kelliellidae, Trapeziidae, Cyrenidae, Glauconomidae, Sphaeriidae, Glossidae, Veneridae Flora and Fauna of Korea National Institute of Biological Resources Ministry of Environment Invertebrate Fauna of Korea Volume 19, Number 7 Bivalves III Mollusca: Bivalvia: Unionoida: Unionidae Veneroida: Kelliellidae, Trapeziidae, Cyrenidae, Glauconomidae, Sphaeriidae, Glossidae, Veneridae 2019 National Institute of Biological Resources Ministry of Environment Invertebrate Fauna of Korea Volume 19, Number 7 Bivalves III Mollusca: Bivalvia: Unionoida: Unionidae Veneroida: Kelliellidae, Trapeziidae, Cyrenidae, Glauconomidae, Sphaeriidae, Glossidae, Veneridae Copyright © 2019 by the National Institute of Biological Resources Published by the National Institute of Biological Resources Environmental Research Complex, 42, Hwangyeong-ro, Seo-gu Incheon 22689, Republic of Korea www.nibr.go.kr All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the National Institute of Biological Resources. ISBN: 978-89-6811-422-9(96470), 978-89-94555-00-3(Set) Government Publications Registration Number: 11-1480592-001639-01 Printed by Junghaengsa, Inc. in Korea on acid-free paper Publisher: National Institute of Biological Resources Author: Jun-Sang Lee (Soon Chun Hyang University) Project Staff: Eunjung Nam, Hyunjong Kil, Hyeonggeun Kim Published on November 30, 2019 Invertebrate Fauna of Korea Volume 19, Number 7 Bivalves III Mollusca: Bivalvia: Unionoida: Unionidae Veneroida: Kelliellidae, Trapeziidae, Cyrenidae, Glauconomidae, Sphaeriidae, Glossidae, Veneridae Jun-Sang Lee Soon Chun Hyang University The Flora and Fauna of Korea logo was designed to represent six major target groups of the project including vertebrates, invertebrates, insects, algae, fungi, and bacteria.
    [Show full text]
  • Patterns of Freshwater Bivalve Global Diversity and the State of Phylogenetic Studies on the Unionoida, Sphaeriidae, and Cyrenidae Author(S): Daniel L
    Patterns of Freshwater Bivalve Global Diversity and the State of Phylogenetic Studies on the Unionoida, Sphaeriidae, and Cyrenidae Author(s): Daniel L. Graf Source: American Malacological Bulletin, 31(1):135-153. 2013. Published By: American Malacological Society DOI: http://dx.doi.org/10.4003/006.031.0106 URL: http://www.bioone.org/doi/full/10.4003/006.031.0106 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit 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. Amer. Malac. Bull. 31(1): 135–153 (2013) Patterns of freshwater bivalve global diversity and the state of phylogenetic studies on the Unionoida, Sphaeriidae, and Cyrenidae* Daniel L. Graf Department of Biological Sciences, University of Alabama, Tuscaloosa Alabama 35487 U.S.A. Department of Biology, University of Wisconsin-Stevens Point, Stevens Point Wisconsin 54481 U.S.A. (current address) Correspondence, Daniel Graf: [email protected] Abstract. The objective of this paper is to review the current state of our knowledge of freshwater bivalve diversity and evolution in order to identify some of the “Great Unanswered Questions” in the fi eld.
    [Show full text]
  • Benthic N Pathways in Illuminated and Bioturbated Sediments Studied with Network Analysis
    LIMNOLOGY and Limnol. Oceanogr. 00, 2017, 00–00 OCEANOGRAPHY VC 2017 Association for the Sciences of Limnology and Oceanography doi: 10.1002/lno.10724 Benthic N pathways in illuminated and bioturbated sediments studied with network analysis M. Magri,1 S. Benelli,2 C. Bondavalli,1 M. Bartoli ,1,3* R. R. Christian,4 A. Bodini1 1Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy 2Department of Life Sciences and Biotechnologies, University of Ferrara, Ferrara, Italy 3Coastal Research and Planning Institute, University of Klaipeda, Klaipeda, Lithuania 4Department of Biology, East Carolina University, Greenville, United States Abstract The regulation of benthic nitrogen (N) cycling by multiple interactions among bacteria, macrofauna, and primary producers is poorly understood. We hypothesized that a biodiverse benthic system should better exploit the benthic N-availability and retain N than a simpler one. Retention occurs by avoiding losses both to the water column via increased recycling and to the atmosphere via decreased N2 fluxes and by limiting energy-costly processes as N-fixation. We also hypothesized that primary producer-bacterial competition is reduced in the presence of macrofauna due to mobilization of refractory N pools. To this purpose, the effects of two bioturbators (the detritivorous Sparganophilus tamesis and the filter-feeding Corbicula spp.) and two pri- mary producer growth forms (the rooted macrophyte Vallisneria spiralis and microphytobenthos) on benthic N cycling were studied. An array of N-processes were measured along a complexity gradient (from bare sedi- ments to all combinations of the above mentioned organisms), and experimental outcomes were analyzed via ecological network analysis (ENA).
    [Show full text]
  • Bivalve Fauna and Distribution in the Amur River Estuary—A Warm-Water
    Vol. 455: 195–210, 2012 MARINE ECOLOGY PROGRESS SERIES Published May 30 doi: 10.3354/meps09679 Mar Ecol Prog Ser Bivalve fauna and distribution in the Amur River estuary— a warm-water ecosystem in the cold-water Pacific region Gennady M. Kamenev*, Dmitry A. Nekrasov A.V. Zhirmunsky Institute of Marine Biology of the Far Eastern Branch of the Russian Academy of Sciences, Palchevskogo St., 17, Vladivostok 690059, Russia ABSTRACT: The understanding of the processes regulating the species richness and diversity in estuarine ecosystems is a fundamental problem of ecology. The Amur River estuary is charac- terised by high summer water temperatures (up to 20−21°C) anomalous for the cold-water north- western Pacific region. We hypothesized that the warm-water Amur estuary greatly influences the species richness of this cold-water region, contributing to the far northward spread of warm-water macrobenthic species. We investigated the fauna and distribution of bivalves in relation to environmental variables in the Amur estuary (Sakhalin Gulf, Amurskiy Liman, and northern Tatar Strait) on the basis of samples collected during 6 expeditions between 2003 and 2007. Most of the bivalve species found in the estuary (30 of 41) are marine species, which were recorded only in Sakhalin Gulf (Sea of Okhotsk) and the Tatar Strait (Sea of Japan). In the greater part of Amurskiy Liman, we found only brackish-water species Corbicula japonica, Corbula amurensis, and Macoma balthica, which were most abundant (mean ± SE: 74.6 ± 3.4% of the total biomass per sta- tion) among the macrobenthos. Qualitative (presence/absence of species) and quantitative (fourth-root transformed biomass) cluster and multidimensional scaling analyses revealed 6 dis- tinct areas in the estuary.
    [Show full text]