Relevant bibliographies by topics / Bivalves

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Academic literature on the topic 'Bivalves'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 July 2024

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Journal articles on the topic "Bivalves"

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Zani, Rahma, Afrizal Tanjung, and Elizal Elizal. "BIVALVE COMMUNITY STRUCTURE IN THE INTERTIDAL ZONE OF PASUMPAHAN ISLAND PADANG CITY WEST SUMATERA PROVINCE." Asian Journal of Aquatic Sciences 6, no. 2 (August 2, 2023): 168–73. http://dx.doi.org/10.31258/ajoas.6.2.168-173.

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Bivalvia is a class of the Mollusca phylum. Bivalvia is also known as Pelecypoda and Lamellibrankhiata. Bivalvia occupies an area of the intertidal zone, one of which is in the intertidal zone of Pasumpahan Island. But information about bivalves in the area does not exist. To know/understand information about the density and distribution pattern of bivalves on Pasumpahan Island, this research was conducted in January 2022. The sampling area was in the intertidal zone of Pasumpahan Island. Sampling was carried out at three stations, each station was divided into three transects. Bivalve sampling was carried out using a 1 x 1mm sieve. The movement of bivalves to the gravel substrate is very fast to avoid splashing waves. Bivalves samples were then identified. The density of bivalves in the intertidal zone of Pasumpahan Island ranged from 1.78-3.56 Ind/m2. Station 2 has a higher density of bivalves, namely 3.56 Ind/m2, the calculation of bivalves in the intertidal zone of Pasumpahan Island obtained bivalves distribution pattern data in groups
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Suryono, Chrisna Adhi, Agus Sabdono, and Subagiyo Subagiyo. "Bioakumulasi Arsen (As) dan Merkuri (Hg) pada Bivalvia dari Pesisir Sekitar Demak dan Surabaya Indonesia." Jurnal Kelautan Tropis 22, no. 2 (November 2, 2019): 157. http://dx.doi.org/10.14710/jkt.v22i2.6257.

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The coastal waters at Demak and Surabaya as areas for fishing ground bivalve for consumption proposes. Unfortunately, mostly the coastal land these areas were used for industry and settlement, it will have an impact on the coastal environment. Heavy metal is one of aspect on coastal environments will give impact, especially on bivalves. This study aims to determine the metal As and Hg in several of bivalves tissue, seawater, sediments and bioaccumulation factors in the of Demak and Surabaya coastal waters. The analysis of As and Hg content in bivalves tissue, sediments and seawater using ICPMS. The results showed bivalves, sediments and seawater samples were found As and Hg concentrations. The highest concentration of As was found in the sediments; meanwhile the highest Hg concentration was found in the bivalve tissue of P. attenuatus > A. pectinata > A.inaequivalvis > A. granosa > P. viridis > P. undulada > M. hiantina respectively. The BAF bioaccumulation factor a significant difference p = 0.021 and the BSAF sediment bioaccumulation factor showed a very highly significant difference p = 0.009. The concentration of As, Hg and bioaccumulation factors in the two fishing ground bivalves areas shows a difference. Pesisir sekitar Demak dan Surabaya merupakan daerah fishing ground berbagai jenis bivalvia untuk dikonsumsi. Namun sekarang pesisir daratan sebagian besar dimanfaatkan untuk industri dan pemukiman hal tersebut akan memberi dampak pada lingkungan pesisir. Logam berat merupakan salah satu aspek yang memberi dampak pada linkungan pesisir terutama pada bivalvia. Penelitian ini bertujuan mengetahui logam As dan Hg yang terdapat dalam jaringan beberapa jenis bivalvia, air laut, sedimen serta faktor bioakumulasi di pesisir Demak dan Surabaya. Analisa kandungan As dan Hg dalam jaringan bivalvia, sedimen dan air laut menguunakan ICPMS. Hasil penelitian menunjukan sampel bivalvia, sedimen dan air laut ditemukan As dan Hg. Konsentrasi As tertinggi ditemukan dalam sedimen, sedangkan konsentrasi Hg tertinggi ditemukan dalam jaringan bivalvia secara berurutan P. attenuatus > A. pectinata > A.inaequivalvis > A. granosa > P. viridis > P. undulada > T. timorensis. Adanya perbedaan yang nyata p=0.021 terhadap faktor bioakumulasi BAF dan faktor bioakumulasi sedimen BSAF menunjukan perbedaan yang sangat nyata p = 0.009. Konsentrasi As, Hg dan faktor bioakumulasi di kedua daerah fishing ground bivalvia menunjukan adanya perbedaan.
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Rahmantyah, Sri Samira. "Studi Komparasi Kuantitas Bivalvia pada Zona Intertidal di Pantai Ntana Kabupaten Bima sebagai Upaya Penyusunan Brosur Konservasi." Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan 3, no. 2 (April 15, 2023): 70–93. http://dx.doi.org/10.36312/panthera.v3i2.164.

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Bivalves belong to the Phylum mollusca. Bivalve are found and live in the Intertidal area. Ntana Beach is the easiest area and has the most interaction with human activities, because this area is a transitional area between aquatic ecosystems and land ecosystems. This study aims to: 1) identify the types of bivalves that make up the Intertidal zone on the Ntana coast, Bima Regency; 2) analyzing the abundance, diversity index, and evenness of Bivalvia in the Intertidal zone on the Ntana coast, Bima Regency; 3) describe the population of bivalve species that dominate the Intertidal zone on the Ntana coast, Bima Regency; 4) analyzing the abundance of bivalves in the sandy, muddy and rocky substrate areas on the Ntana beach, Bima Regency; 5) analyzing the diversity of bivalve species in the area of ​​sandy substrate, muddy substrate, and coral substrate on the Ntana beach, Bima Regency; 6) knowing the differences in the dominance of Bivalvia in the sandy, muddy and rocky substrate areas on the Ntana beach, Bima Regency; and 7) to develop research results on a comparative study of the quantity of bivalves in the intertidal zone on the Ntana coast, Bima district as an effort to prepare a conservation brochure. This type of research is descriptive comparative. Sampling used a 1x1 M plot. The results showed that as many as 540 individual bivalves consisting of 15 species were found on the Ntana beach, Bima district. 15 species of bivalves found include Anadara antiquata, Anadara granosa, Anadara brasilliana, Panopea generosa, Fausta pultenei, Dosina crebra, Eurytellina alternate, Dosina discus, Nactula acuta, Gafrarium divaricatum, Dosinia exoleta, Caestoderma edule, Gafrarium disparm, Cyclocardia ventricosa, and Crassostrea gigas. The abundance on sandy and silty substrates is categorized as moderate, whereas on coral substrates it is categorized as low. Species diversity on rocky substrates is less, whereas on muddy and sandy substrates each has a fairly high level of species diversity. The evenness value on sandy and muddy substrates is close to zero (0), so that the evenness of Bivalvia species on both substrates is not evenly distributed. There are no species that dominate other species because D <0.5. The average value of the brochure validation test is 75.4%, with this result, the brochures that have been compiled are in the good category and do not need to be revised.
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Utari, Enggar, Hartanto Sanjaya, Mahrawi Mahrawi, Indria Wahyuni, Pipit Marianingsih, and Ita Nurlaita. "Mangrove Land Mapping and the Potential for Bivalve Diversity with Remote Sensing in the Pulau Dua Nature Reserve (As an Initial Study for the Development of Class X High School Ecosystem Biology Subconcept Learning Devices)." Edumaspul: Jurnal Pendidikan 7, no. 2 (October 1, 2023): 2384–97. http://dx.doi.org/10.33487/edumaspul.v7i2.6639.

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Bivalvia is an invertebrate animal that has a high level of diversity and a marine biological resource that has significant economic value. This research was conducted in November 2021, aiming to determine bivalve diversity, mapping of manrove land and the potential for bivalve diversity, the relationship between the results of analysis of the presence of water on bivalves diversity in the Pulau Dua Nature Reserve and the implications of research results in the field of education. The method used is the roaming method to determine bivalves diversity and remote sensing methods to map areas of potential bivalve diversity in Pulau Dua Nature Reserve. The results of observations found that the diversity of bivalves in Pulau Dua Nature Reserve was included in the medium diversity category with a value of 1.085. The results of the relationship between bivalve diversity and MNDWI are classified as having a strong relationship, namely the correlation coefficient (r) is 0.668. In the Pulau Dua Nature Reserve, it was found that areas with a high potential for bivalve diversity were found at coordinates 106.198956 6.018374. The results of this research were then carried out to analyze the material at KD 3.10 and KD 4.10 for class X SMA at school.
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Schneider, Jay A. "Bivalve systematics during the 20th century." Journal of Paleontology 75, no. 6 (November 2001): 1119–27. http://dx.doi.org/10.1017/s0022336000017170.

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Over the past 75 years, the higher-level taxonomy of bivalves has received less attention than that of their fellow molluscs, gastropods. The publication of the bivalve volumes of the Treatise on Invertebrate Paleontology in 1969 was not followed by an explosion of study into the evolution of bivalves; rather, with only one or two exceptions, bivalve workers were noticeably absent from the cladistic and molecular revolutions that were taking place during the 1970s and 1980s, even as gastropods received considerable attention. Over the past ten years, cladistics and molecular systematics have begun to be applied to solve problems of bivalve evolutionary biology. These studies, most of which have been undertaken by paleontologists, have halted the stagnation in bivalve systematics. Bivalve systematics looks to have an exciting future, as the excellent fossil record of the Bivalvia will be used in conjunction with cladistics and molecular systematics to solve problems in not just bivalve evolution but evolutionary biology in general.
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MARIN, IVAN, and GUSTAV PAULAY. "Pinnotherotonia rumphiusi gen. et sp. nov., a new furry bivalve-associated pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from Palau." Zootaxa 2636, no. 1 (October 5, 2010): 37. http://dx.doi.org/10.11646/zootaxa.2636.1.3.

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A new genus and species of a furry, bivalve–associated pontoniine shrimp is described from Palau. This is the second pontoniine shrimp known to be associated with bivalves burrowing into soft bottom, and the first record of a venus clam (Bivalvia, Veneridae) as host for caridean shrimps.
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Aouissi, Riadh, Sihem Salmi-Laouar, Gamal M. El Qot, and El Sayed M. Moneer. "Cenomanian bivalves from Batna Mountains (Saharan Atlas, NE Algeria)." Revista Brasileira de Paleontologia 25, no. 4 (December 31, 2022): 255–73. http://dx.doi.org/10.4072/rbp.2022.4.02.

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In the Batna Mountains, the Cenomanian Marnes de Smail Formation yield fossiliferous deposits mostly dominated by bivalves. Thirty-five bivalve species were identified, belonging to nine orders, 19 families and 26 genera. Five of them are mentioned for the first time from the Cenomanian of the study area (i.e., Nucula ? cf. margaritifera Douvillé, Barbatia (Barbatia) aegyptiaca Fourtau, Cucullaea trigona Seguenza, Arctica inornata d’Orbigny, and A. cordata Sharpe). Their distribution provided interesting insights on the marine paleoenvironment of the Cenomanian times. The paleobiogeographic distribution of the studied bivalves corresponds to the Tethys Realm. Keywords: Bivalvia, Cretaceous, Cenomanian, Algeria, Batna, Tethys
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Annisa, Annisa, Try Febrianto, and Aditya Hikmat Nugraha. "Struktur Komunitas Bivalvia pada Ekosistem Lamun dengan Tutupan Berbeda di Perairan Pulau Bintan." Buletin Oseanografi Marina 13, no. 1 (December 28, 2023): 41–51. http://dx.doi.org/10.14710/buloma.v13i1.52048.

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Ekosistem lamun memiliki kaitan yang erat dengan keberadaan bivalvia. Kondisi struktur ekosistem lamun yang berbeda-beda di Perairan Pulau Bintan diduga dapat berpengaruh terhadap asosiasi bivalvia pada ekosistem lamun. Penelitian ini bertujuan untuk mendeskripsikan struktur ekosistem lamun dan mempelajari struktur asosiasi bivalvia pada beberapa ekosistem lamun di Pesisir Pulau Bintan. Terdapat 4 stasiun pengamatan yang diamati pada penelitian ini. Penentuan lokasi penelitian berdasarkan keterwakilan sebaran ekosistem lamun di Pulau Bintan, dengan kondisi tutupan lamun yang berbeda, yaitu meliputi: Dompak, Pengudang, Teluk Bakau dan Pengujan. Metode sampling menggunakan transek kuadrat yang dipadukan dengan 3 buah transek garis sepanjang 100 m ke arah laut. Diperoleh 7 jenis lamun yang tersebar di 4 lokasi penelitian. Tutupan lamun tertinggi terdapat di Pesisir Pengudang dengan nilai tutupan sebesar 66.1%. Ditemukan 28 spesies bivalvia dengan nilai kepadatan tertinggi yaitu Gafrarium pectinatum. Hasil analisis PCA menunjukkan bahwa tutupan lamun memiliki keterikatan dengan kepadatan bivalvia. Beberapa bivalvia memiliki kecenderungan untuk hidup pada vegetasi lamun tertentu. Seagrass ecosystems have a close relationship with the existence of bivalves. The different structural conditions of the seagrass ecosystem in the waters of Bintan Island are thought to influence the association of bivalves in the seagrass ecosystem. This study aims to describe the structure of seagrass ecosystems and study the structure of bivalve associations in several seagrass ecosystems on the coast of Bintan Island. There are four observation stations observed in this study. The determination of the research location was based on the representation of the distribution of seagrass ecosystems on Bintan Island, with different seagrass cover conditions, including: Dompak, Pengudang, Bakau Bay and Pengujan. The sampling method uses a quadratic transect combined with 3 line transects along 100 m seaward, obtaining 7 types of seagrasses scattered in 4 research locations. The highest seagrass cover was found in Pengudang Coastal Area, with a cover value of 66.1%. Found 28 species of bivalves with the highest density value, namely Gafrium pectinatum. PCA analysis results show that seagrass cover has an attachment to the density of bivalves. Some bivalves tend to live on specific seagrass vegetation.
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Eddy, La, Rezki Amalia Riandini, and Mechiavel Moniharapon. "HISTOLOGI JARINGAN MANTEL TIRAM (SAIBO) PADA BEBERAPA JENIS BIVALVIA SEBAGAI ALTERNATIF IMPLANTASI MUTIARA." Jurnal Pendidikan Matematika dan IPA 10, no. 1 (January 30, 2019): 128. http://dx.doi.org/10.26418/jpmipa.v10i1.27629.

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All types of bivalves have the potential to produce pearls. Pearls can be produced naturally and cultivated. In cultured pearls, pearl sac are obtained from saibo (slices of another bivalve mantle) that which come from pallial zone. This study wants know the structures of tissues saibo of several species of bivalves as an alternative pearls implantation. This study is conducted from January to March 2017. This study used 7 types of bivalves among others; Pinctada margaritifera, Saccostrea cucullata, Asaphis violascens, Polymesoda bengalensis, Pinna muricata, Volachlamys singaporina, and Tridacna crocea. The method used by staining Hematoxylin-Eosin. Thisstudy show results that every saibo has the different characteristic, but has a common characteristic of having outer epithelium mantle, inner epithelium mantle, muscle fibers, connective tissue and longitudinal muscle, so it can be recommended in pearls implantation Keywords : Saibo, Bivalvia, Implantasi Mutiara[H1] [H1]Disusun berdasarkan abjad
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Hariani, Indri, Abdul L. Mawardi, and T. Hadi Wibowo Atmaja. "KARAKTERISTIK MORFOMETRIK BIVALBIA DI KAWASAN PADAT INDUSTRI DI PESISIR LANGKAT SUMUTRA UTARA." JURNAL BIOSENSE 7, no. 01 (June 18, 2024): 50–58. http://dx.doi.org/10.36526/biosense.v7i01.3565.

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The coastal area of ​​Pangkalan Susu is a place with diverse marine biota. Apart from being a spawning place and source of nutrition, coastal areas are also a source of food for various marine biota, including gastropods and bivalves Morphometry is the size or comparison of external body size between one part and another. This research was carried out in September 2023 on the coast of Pangkalan Susu, Langkat Regency. Sampling was carried out in plots. Bivalves are grouped into 3 length classes, namely small size (1.0 cm – 2.0 cm), medium size (2.1cm – 3.0 cm), large size (>3.1cm). Based on the collection of bivalve species at each location, 3 species of bivalves were obtained. The 3 species of bivalves obtained were Anadara granosa, Placuna placenta and Atrina pectinata. All bivalve species are large in size. Morphometrics of the three bivalve species showed that location 1 showed higher values ​​compared to location 1 in terms of length, width and weight. Key words: Bivalves; Morphometrics; Pangkalan Susu.
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Dissertations / Theses on the topic "Bivalves"

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Sze, Wai-chung. "The effect of chronic copper exposure on the energy budget of two mussels, perna viridis (L.) and septifer virgatus (Wiegmann) /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17546333.

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Crampton, James Scutts. "Palaeobiology of cretaceous inoceramid bivalves." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308302.

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Corrêa, Adriana de Abreu. "Vírus entéricos em moluscos bivalves." Florianópolis, SC, 2010. http://repositorio.ufsc.br/xmlui/handle/123456789/94278.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Programa de Pós-Graduação em Biotecnologia, Florianópolis, 2010
Made available in DSpace on 2012-10-25T08:15:24Z (GMT). No. of bitstreams: 1 286371.pdf: 1947104 bytes, checksum: 68df212a986afad58f62e633e601bcc8 (MD5)
Patógenos virais humanos têm sido associados a muitos episódios de gastrenterites, bem como a doenças relacionadas ao consumo de moluscos contaminados. O risco pode ser reduzido por um tratamento destes moluscos visando sua auto-limpeza previamente a sua comercialização. A depuração de moluscos reduz os níveis de microrganismos presentes na carne, diminuindo a chance de uma potencial infecção associada ao seu consumo in natura. Em um sistema de depuração, a água do mar pode ser recirculada pelo menos por 24 horas e, durante este ciclo, a água é tratada química ou fisicamente para eliminar a contaminação por microrganismos. Neste trabalho, um sistema fechado de depuração de moluscos foi testado para eliminar os patógenos virais em ostras. Além disso, a capacidade do cloro livre em inativar esses vírus, bem como a estabilidade viral em água do mar, com e sem radiação U.V. foram investigadas. Para os ensaios de depuração, ostras (Crassostrea gigas) foram artificialmente contaminadas em aquários, contendo água do mar semeada com Vírus da Hepatite A (HAV) e Adenovírus Humano (HAdV5). Em seguida, as ostras foram colocadas no tanque de depuração, e foram analisadas após 48h, 72h e 96h. Em cada amostragem, o trato gastrointestinal das ostras foi homogeneizado e processado visando a eluição das partículas virais. Para os estudos de desinfecção pelo uso do cloro, água do mar natural e artificial foram semeadas com Norovírus Murino 1 (MNV-1), HAdV2 e Poliomavírus JC (JCPyV) e tratadas com uma concentração inicial de cloro livre de 2,5 mg/l, por 60min. Para os ensaios de estabilidade viral em água do mar e desinfecção viral por luz U.V., 300L de água do mar foram semeadas com o HAV, MNV-1 e HAdV2 e tratados com U.V. (36W), em um mini-tanque de depuração, com recirculação por 120h. Um litro de água do mar foi coletado a cada 24h em até 120h e as amostras de água foram tratadas pelo método de floculação com leite acidificado para adsorção e concentração das partículas virais. O monitoramento viral nos tecidos das ostras e água do mar foi avaliado por métodos moleculares (PCR e q(RT)-PCR), e por métodos de cultura celular associados a métodos moleculares ou imunológicos (ICC-PCR, RT-PCR ICC, IFA, Citometria de Fluxo e Ensaio de Placas de Lise). A detecção por PCR, em amostras de ostras, mostrou que o genoma de HAdV5 foi detectado em todos os períodos de amostragem, e o genoma do HAV foi detectado até 72 h. Os testes envolvendo viabilidade viral por ICC-PCR, demonstraram uma inativação viral progressiva, nas ostras, ao longo das 96h de recirculação de água do mar tratada com luz U.V. Nos ensaios de desinfecção por cloro, após 30 minutos de tratamento de água do mar, foi observada uma redução de ~2log10 e ~3log10 para MNV-1 e HAdV2, respectivamente, com base nos resultados q(RT) PCR. Quando a infecciosidade viral foi analisada, uma redução de mais de 4log10 foi observada para MNV-1, enquanto HAdV2 apresentou uma redução de ~ 2.3log10, mantendo-se infeccioso após 60 minutos. JCPyV apresentou em média uma redução de 1,6 log10, quando avaliado por qPCR. Não houve diferenças na cinética de desinfecção viral observadas em água do mar natural e artificial. Para os ensaios de estabilidade viral em água do mar tratada ou não com luz U.V., com base nos resultados q(RT)-PCR, foram observadas cinéticas diferentes para cada vírus em 120 horas de contato. Reduções de ~ 5log10 e 3log10, em 120h, para HAdV2 e HAV, respectivamente; para MNV-1, foi observada uma redução de ~4,5 log10 em 72h sob tratamento com luz U.V. Apesar da detecção do genoma, HAdV2 foi capaz de permanecer infeccioso até 72h, de acordo com resultados de ICC-RT-PCR. Ensaios envolvendo estabilidade viral sem radiação U.V. demonstraram uma redução progressiva da carga viral ao longo das 120h de recirculação de água do mar para os três vírus (~ 2log10 para HAdV2; ~ 2,5 log10 para HAV e ~ 3log10 para MNV-1). Esta cinética diferente provavelmente está associada às espécies de cloro presentes, ao tempo de contato com a radiação U.V. e a características estruturais peculiares de cada um dos vírus. A diminuição natural da carga viral pode ser devido à existência de fatores ambientais, tais como força iônica e compostos encontrados naturalmente na água do mar. Este trabalho confirmou que HAdV é um patógeno viral particularmente resistente e exige mais tempo para inativação. Estes dados serão úteis para a otimização de desinfecção da água nos tanques de depuração de moluscos.
Viruses have been linked to nearly all episodes of gastroenteritis as well as outbreaks of illnesses related to consumption of contaminated shellfish. The risk may be reduced by appropriate treatment following harvesting as well as by depuration, which is a method that reduces the levels of microorganisms present in mollusk meat, decreasing the potential for infections associated with mollusk consumption in natura. In a depuration system, seawater may be recirculated for at least 24h, and during this cycle, the water must be chemically or physically treated to eliminate microbial contamination. In this work, a shellfish depuration closed system was tested to eliminate viral pathogens from oysters. Moreover, the chlorine capability to inactivate these viruses, as well as the viral stability and disinfection in seawater with and without U.V. irradiation were investigated. For depuration assays, oysters (Crassostrea gigas) were first artificially contaminated in aquariums containing seawater seeded with Hepatitis A virus (HAV) and Human Adenovirus (HAdV5). Then, the oysters were placed into the depuration tank, and were harvested after 48h, 72h and 96h. After each sampling, the gastrointestinal tracts were homogenized and the viral particles were eluted. To chorine disinfection assays, natural and artificial seawater were seeded with selected viruses (Murine Norovirus 1, MNV-1; HAdV2; JC Polyomavirus, JCPyV) and treated by adding initial free chlorine concentration of 2.5mg/l for up to 60min. For the stability assays, 300L of natural seawater were seeded with HAV, MNV-1 and HAdV2, and treated by 36W U.V. lamp, into the mini depuration tank, with recirculation, for up to 120h. One liter of viral seeded seawater was harvested every 24h and viral particles were concentrated by flocculation method using skimmed milk. The kinetics of viral decay in oysters and seawater was evaluated by molecular techniques (PCR and q(RT)-PCR), and by cell culture associated with molecular and immunological methods to access the viral infectivity (ICC-PCR, ICC RT-PCR, IFA, Flow Cytometry and Plaque Assay). The molecular detection by PCR for both viruses showed that the presence of HAdV5 genome was positive in all of the sampling periods, and the HAV genome was detected until 72 h. The tests involving viral viability by ICC-PCR, demonstrated a progressive viral inactivation along the 96h of seawater recirculation under U.V. light irradiation. After 30 minutes of treatment of natural seawater a ~2log10 and ~3log10 reduction where observed for MNV-1 and HAdV2, respectively, based on q(RT)PCR results. When viral infectivity was analyzed, a reduction of more than 4log10 was observed for infectious MNV-1, while HAdV2 presented ~2.3log10 reduction, remaining infective viruses present after 60 minutes. JCPyV presented a average reduction of 1,6 log10, analysed by qPCR. No differences in the disinfection kinetics have been observed between natural and artificial seawater. Based on qPCR results, the kinetics observed were different for each virus, reaching, at 120h of contact time, ~5log10 and ~3log10 reduction for HAdV2 and HAV, respectively; for MNV-1, was observed a ~4,5log10 reduction at 72h under U.V. treatment. Despite the genome detection, HAdV2 was able to remain infectious only up to 72h, according ICC-RT-PCR results. Assays involving viral stability without U.V. irradiation, demonstrated a progressive reduction of viral load along the 120h of seawater recirculation for three viruses (~2log10 for HAdV2; ~2,5log10 for HAV and ~3log10 for MNV). This different kinetics is probably associated to the chlorine species present, the contact time with the U.V. radiation and structural characteristic of each virus. The natural decreasing of viral load can be due to the existence of environmental factors, such as ionic strength and compounds naturally found in seawater. This work confirmed that HAdV is a particularly a resistant viral pathogen and requires longer periods for inactivation. These data will be subsequently useful to plan water disinfection in shellfish depuration tanks.
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Bongrain, Madeleine. "Les Gigantopecten (Pectinidae, Bivalvia) du miocène français : croissance et morphogenèse, paléoécologie, origine et évolution du groupe." Lyon 1, 1986. http://www.theses.fr/1986LYO19022.

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La croissance et la morphologie du test de gigantopecten ont ete suivies et analysees tant a l'echelon de l'individu qu'a celui de la population a l'aide de diverses approches biometriques. La valeur adaptive de certains caracteres morphologiques a ete discutee dans un essai d'analyse morpho-fonctionnelle. La plupart des gigantopecten semblent avoir ete infeodes aux plateformes carbonatees qui ont connu une grande extension pendant les periodes chaudes du miocene inferieur et superieur. Les relations entre les caracteres morphologiques de ces pecten geants et leur environnement ont ete etudiees. Un schema evolutif du phylum, s'appuyant sur le developpement ontogenique des coquilles ainsi que sur les relations morphologie-milieu, a ete propose: il conduit a exclure le sous-genre gigantopecten du genre chlamys et a le replacer dans le genre pecten
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Avendaño, Diaz Miguel. "Données sur la biologie de Argopecten Purpuratus (Lamarck, 1819), mollusque bivalve du Chili." Brest, 1993. http://www.theses.fr/1993BRES2033.

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Le mollusque bivalve Argopecten purpuratus (Lamarck, 1819), de la famille des pectinidae se rencontre sur les cotes chiliennes depuis Arica jusqu'a Valparaiso. Il présente un intérêt commercial élevé du a une forte demande du marche international. Cependant, la surexploitation ayant entraîné une inquiétante diminution des bancs naturels, des centres d'élevages expérimentaux ont été construits en 1986. Malheureusement, jusqu'a ce jour, les résultats obtenus par ces ecloseries-nourriceries restent faibles en raison de la méconnaissance de divers aspects du cycle biologique de l'espèce. L’objectif de l'étude est de fournir des éléments fondamentaux permettant d'établir les bases biologiques de l'aquaculture de A. Purpuratus. Pour cela, des individus provenant de deux populations différentes: celle de la baie de mejillones et celle de la rinconada sont retenues et 5 aspects sont analyses: la reproduction, l'influence de facteurs environnementaux sur les cycles gamétiques, les caractéristiques biométriques, la morphogenèse des coquilles larvaires et la structure génétique des populations. Les données obtenues révèlent des différences concernant le nombre d'allèles, le polymorphisme enzymatique, le poids du muscle, le déroulement des cycles gamétiques et l'intensité des émissions. Outre une meilleure connaissance de la biologie de l'espèce, ces résultats devraient permettre de choisir les individus servant de géniteurs en écloserie industrielle et de pouvoir ainsi améliorer leurs performances.
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Paugam, Alain. "Identification immunologique des larves d'un mollusque bivalve marin : Pecten maximus." Brest, 2000. http://www.theses.fr/2000BRES2023.

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Pour comprendre les fluctuations d'abondance de certaines especes marines il est important de ne pas negliger leurs stades larvaires planctoniques. Les representants de ces organismes sont difficiles a identifier car les outils specifiques adaptes sont peu nombreux. L'objet de ce travail est de proposer, dans le cadre du pndr (programme national sur le determinisme du recrutement), une approche methodologique qui facilite la reconnaissance des larves de bivalves. L'espece cible est la coquille saint-jacques, pecten maximus et le site d'etude, la rade de brest (france). La voie suivie est immunologique. Parmi les molecules potentiellement immunogenes, les proteines sont retenues pour induire la production de serum anti-larves de pecten maximus. Ce choix necessite le developpement d'une technique d'extraction proteique adaptee aux echantillons larvaires de bivalves marins. Les extraits proteiques obtenus a partir de differentes especes sont analyses en electrophorese sds-page et sont specifiques. Ils permettent de tester analytiquement, en immunotransfert, la specificite des serums anti-extrait proteique larvaire de ce pectinide. Ces serums reagissent fortement vis a vis de l'extrait proteique de larves de pecten maximus mais presentent egalement de nombreuses reponses croisees vis a vis des extraits proteiques appartenant aux autres especes etudiees (aequipecten opercularis, chlamys varia, ostrea edulis, crassostrea gigas, ruditapes decussatus, ruditapes philippinarum, mytilus edulis). Differentes solutions sont envisagees pour reduire le taux de reponses croisees. L'epuisement des serums contre des extraits proteiques de crassostrea gigas permet d'eliminer la quasi-totalite de ces reponses sans nuire a la reconnaissance des extraits proteiques de pecten maximus. Ces serums epuises sont utilises directement contre des lots de larves de bivalves pour valider leur pouvoir de reconnaissance des larves de pecten maximus. Trois marqueurs secondaires destines a la reconnaissance du couple larve de pecten maximus/anticorps sont testes : la phosphatase alcaline, les billes magnetiques (dynal), la fluorescence (fitc). La fluorescence donne les meilleurs resultats et c'est cette technique qui est retenue et mise en application pour permettre de visualiser les larves de pecten maximus contenues dans des echantillons de plancton en provenance de la rade de brest. Ce dernier aspect de l'etude permet sur une annee, d'identifier des larves de pecten maximus en rade de brest et de retrouver une concordance certaine entre la presence de ces larves et les phases de reproduction des adultes. L'outil immunologique detecte les larves de pecten maximus parmi les autres organismes planctoniques et pourrait etre developpe pour de nombreuses especes a condition de disposer de quantite d'extrait proteique monospecifique suffisante pour induire la production d'anticorps.
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Allee, Rachel Donovan Deborah Anne. "The effects of anoxic conditions on thermal tolerance and stress protein levels in four local bivalves /." Online version, 2010. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=323&CISOBOX=1&REC=4.

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Matte, Glavur Rogerio. "Isolamento de vibrios potencialmente patogênicos em moluscos bivalves." Universidade de São Paulo, 1994. http://www.teses.usp.br/teses/disponiveis/6/6134/tde-14072016-152410/.

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Neste estudo, 26 amostras de ostras (Crassostrea gigas) comercializadas na cidade de São Paulo e em alguns pontos do litoral de São Paulo, e 36 amostras de mexilhões (Perna perna) colhidas mensalmente em 3 pontos do litoral de Ubatuba - SP, foram submetidas à pesquisa de vibrios potencialmente patogênicos. As amostras desses moluscos eram submetidas a enriquecimento em água peptonada alcalina sem cloreto de sódio e com 1 por cento de cloreto de sódio, e GSTB. O isolamento foi realizado em ágar TCBS. Colônias sacarose positivas e negativas, sugestivas de espécies de Vibrio foram identificadas presuntivamente em meio de ágar ferro de Kligler, sendo confirmadas através de provas bioqufmicas complementares. Uma parte das amostras de vibrios potencialmente patogênicos isoladas foi submetida ao teste de Dean e teste de alça ligada em íleo de coelhos. Os vibrios potencialmente patogênicos encontrados em amostras de ostras foram V. alginolyticus (81 por cento ), V.parahaemolyticus (77 por cento ), V. cholerae não 0:1 (31 por cento ), V. fluvialis (27 por cento ), V. furnissii (19 por cento ), V. mimicus (12 por cento ) e V. vulnificus (12 por cento ) e em amostras de mexilhões foram V. alginolyticus(97 por cento ), V. parahaemolyticus(75 por cento ), V. fluvialis (47 por cento ), V. vulnificus (11 por cento ), V. cholerae não 0:1 (6 por cento ), V. furnissii (6 por cento ) e V. mimicus (6 por cento ). Observou-se acúmulo de fluido em alça ligada de íleo de coelho entre 0,25 e 0,49 ml/cm em 6,9 por cento das amostras, entre 0,5 e 0,99 ml/cm em 15,6 por cento e maior ou igual a 1 ml/cm em 15,1 por cento , e/ou intestino de camundongos lactentes (Teste de Dean) em 26,6 por cento das amostras testadas, confirmando o elevado potencial desses microrganismos em causar gastrenterite. Verificou-se ausência de variação sazonal e também, de correlação entre os vibrios potencialmente patogênicos isolados e os indicadores de contaminação fecal, confirmando que a presença desses microrganismos ocorre de forma autóctone e que, as condições climáticas foram favoráveis à sobrevivência dessas espécies em todas as épocas do ano. Considerando-se os resultados obtidos no presente estudo e o fato de que ostras e mexilhões são habitualmente ingeridos crus ou insuficientemente cozidos, pode-se concluir que sua ingestão constitui-se em um determinado grau de risco para a saúde do consumidor.
In this work, 26 oysters samples (Crassostrea gigas), found in the market of São Paulo city and some coastal areas of São Paulo State, and 36 mussels samples (Perna perna), that were collected monthly in 3 coastal areas of Ubatuba city - SP., were analyzed for the potential patogenic vibrios occurrence. Samples were enriched in alcalin peptone water with (1 per cent ) and without sodium cloride and GSTB. Isolation was performed on TCBS agar. suspect sacharosis positive and negative colonies, resembling vibrio species, were presumptively identified on Kligler iron agar, and confirmed by complementary biochemical tests. Some of this potential patogenic vibrios were submitted to suckling mouse assay and rabbit ileal loop assay. Potential patogenic vibrios isolated from oyster samples were: V. alginolyticus (81 per cent ), V. parahaemolyticus (77 per cent ), V. cholerae non 0:1 (31 per cent ), V. fluvialis (27 per cent ) I V. furnissii (19 per cent ), V. mimicus (12 per cent ) and V. vulnificus (12 per cent ) and from mussels samples were: V. a.1ginolyticus (97 per cent ), V. parabaemolyticus (75 per cent ), V. fluvialis (47 per cent ), V. vulnificus (11 per cent ), V. cholerae non 0:1 (6 per cent ), V. furnissii (6 per cent ) and V. mimicus (6 per cent ). It was found 6,9 per cent of samples between 0,25 and 0,49 ml/cm of fluid accumulation in ileal loop assay, 15,6 per cent between 0,5 and 0,99 ml/cm and 15,1 per cent was equal or higher than 1 ml/cm. Among the samples assayed for suckling mouse 26,6 per cent were positive. These results confirm the high potential of these microrganisms to induce gastroenteritis. Seasonal variation as well as correlation between the potential patogenic vibrios isolated and the fecal contamination indicators were not found, confirming that the presence of such microrganisms occurs autochthonously and that the climate conditions were favourable to these species survival during the whole year. with the results of this work and considering that oyster and mussels are usually ingested raw or insufficiently cooked, the conclusion is that the ingestion of such mollusks presents a certain degree of risk for the consumer\'s health.
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Sälgeback, Jenny. "Functional Morphology of Gastropods and Bivalves." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7424.

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Functional morphology analyzes the relationships between form and function in organisms. However, a comprehensive analysis of any organic structure requires an integrated approach to morphology. For this purpose constructional morphology was developed, where function, phylogeny and construction together explain form. This thesis investigates functional and constructional aspects of gastropods and bivalves; two groups of molluscs which are among the most common shell-bearing invertebrates. Their shell protects the soft parts and different morphologic specializations enhance this function. Morphology and mode of life are often closely coupled.

Comparison of the distantly related cardiid bivalves Cardium costatum and Budmania spp. reveals similar shell modifications. Both have prominent keels functional in anchoring the shell within the sediment. The straight keels in C. costatum indicate an additional strengthening function, whereas the keels in Budmania spp. often are deformed and do not. Other shell modifications include secondary resorption of shell material and hollow keel interiors, reducing shell weight. These similarities are explained by parallel evolution and a common cardiid Bauplan.

Morphological shell characters in cerithiform gastropods have evolved independently in different taxonomic groups and multiple times within the same group. Shell characters are adaptive within five functional areas: defence from shell-peeling predators, burrowing and infaunal life, clamping, stabilization, and righting of the shell. Most characters are made feasible by determinate growth and a count-down programme.

In most environments predators that crush, peel and bore shells are present. As bivalves and gastropods grow by marginal accretion, and are able to replace lost shell material, traces of unsuccessful predation are preserved as scars. Experiments on the snail Nucella lamellosa show that repaired shells are just as strong as shells without damage. However, new scars follow old scar lines in 43% of tested specimens. This might be due to a higher organic content in this area.

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Swinburne, Nicola Helga Margaret. "The extinction of the rudist bivalves." Thesis, Open University, 1990. http://oro.open.ac.uk/54415/.

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The rudist bivalves were one of the many and varied groups of organisms to be extinguished at the end of the Cretaceous Period. They were a group of bivalves which evolved during Late Jurassic times to dominate the carbonate shelves on the margins of the Tethys Ocean during the Cretaceous Period. Through Late Cretaceous times their diversity climbed to a peak and then entered a period of rapid decline, resulting eventually in the complete extinction of the group. Theories as to the cause of that extinction should clearly be based upon a knowledge of the detailed pattern of the decline. Most important is the question of the timing of the extinction: How long did it take from the peak of diversity to the elimination of the entire group? Is there one main extinction event - or are there several - or is the pattern a gradual decline? In answering these questions this work adopts a new approach to dating end Cretaceous strata by using strontium isotope stratigraphy. The method works by measuring the 87 Sr/86Sr of palaeo-seawater preserved in marine carbonate, such as the thick low-Mg calcite layer of rudist shells. The 87Sr/86Sr of seawater was changing fairly rapidly through time in the latest Cretaceous. The pattern of change has been established in detail using samples from Boreal sequences of which the ages are known with respect to the belemnite stratigraphy. Using this as a standard graph, Tethyan rudist samples have been dated by a comparison of the Sr isotope ratio. The use of Sr isotope stratigraphy has enabled a time axis to be established, against which the ranges of rudist bivalves and of their facies have been ploued. From these data it can be clearly seen that the ranges of many of the established biostratigraphic markers are in error and that the stage boundaries, as defined by the belemnite and planktonic foraminiferal stratigraphies, are offseL When the pattern of rudist diversity is plotted against this time scale it can be seen that, at a specific level, the rudists were at their most diverse at the Campanian/Maastrichtian boundary. Their decline lasted until I almost the end of the Maastrichtian after which the only survivors are Tertiary forms. The decline is related to the disappearance of rudist facies with the end Cretaceous regression, though that graph is slightly displaced from that of rudist diversity. This shows that the rudist extinction is not merely due to non-exposure of terminal Maastrichtian strata.
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Books on the topic "Bivalves"

1

Wenne, Roman. Zróżnicowanie przestrzenne i ewolucja wybranych gatunków małży morskich. Gdańsk: Wydawn. Uniwersytetu Gdańskiego, 1993.

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Bui͡anovskiĭ, A. I. Morskie dvustvorchatye molli͡uski Kamchatki i perspektivy ikh ispolʹzovanii͡a. Moskva: Izd-vo VNIRO, 1994.

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Garifovich, Ablaev Alʹbert, and Krasnov E. V, eds. Dvustvorchatye molli͡u︡ski miot͡s︡ena I͡U︡go-Zapadnogo Sakhalina. Vladivostok: DVO AN SSSR, 1989.

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1909-, Newell Norman Dennis, Johnston Paul A, Haggart J. W, and International Symposium on the Paleobiology and Evolution of the Bivalvia (1995 : Tyrrell Museum of Palaeontology), eds. Bivalves: An eon of evolution : paleobiological studies honoring Norman D. Newell. Calgary, Alta: University of Calgary Press, 1998.

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Moore, Ellen James. Tertiary marine pelecypods of California and Baja California: Plicatulidae to Ostreidae. Washington: U.S. G.P.O., 1987.

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Moore, Ellen James. Tertiary marine pelecypods of California and Baja California: Plicatulidae to Ostreidae. [Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey, 1987.

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Moore, Ellen James. Tertiary marine pelecypods of California and Baja California: Erycinidae through Carditidae. Washington: U.S. G.P.O., 1992.

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Hain, Stefan. Die beschalten benthischen Mollusken (Gastropoda und Bivalvia) des Weddellmeeres, Antarktis =: The benthic seashells (Gastropoda and Bivalvia) of the Weddell Sea, Antarctica. Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 1990.

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García-Cubas, Antonio. Moluscos arrecifales de Veracruz, México: Guía de campo. México: Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, 1994.

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Lamprell, Kevin. Bivalves of Australia. Leiden: Backhuys Publishers, 1992.

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Book chapters on the topic "Bivalves"

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Wang, Xudong, Steffen Kiel, and Dong Feng. "New Biogeochemical Proxies in Seep Bivalves." In South China Sea Seeps, 115–28. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1494-4_7.

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AbstractReduced compounds dissolved in seeping fluids, such as methane and hydrogen sulfide, are the main energy sources in submarine cold seep systems, where they nourish the unique chemosynthesis-based ecosystems. Chemosymbiotic bivalves are the dominant macrofauna in many of these ecosystems and have been extensively studied due to their large biomass (hundreds of individuals per square meter), their symbiotic relationships with chemotrophic bacteria (methanotrophic bivalves: methane-oxidizing bacteria; thiotrophic bivalves: sulfur-oxidizing bacteria), and because they are unique archives of biogeochemical processes. In this chapter, we briefly introduce the advancements in seep bivalve research worldwide and then summarize the trophic modes and geographic distribution of seep bivalves in the South China Sea. Thereafter, the biogeochemical processes, such as the enzymatic strategy and energy transfer of seep bivalves, are generalized by integrating the trace elements and stable isotope data of the soft tissues and their corresponding calcareous shells of seep bivalves. Overall, we highlight the past contributions and current knowledge in this field and outline opportunities and future directions to expand this area of research.
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Levine, Jay F., Mac Law, and Flavio Corsin. "Bivalves." In Invertebrate Medicine, 127–51. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch8.

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Cole, Theodor C. H. "VII. Mollusca: Bivalvia – Muscheln – Bivalves." In Wörterbuch der Wirbellosen / Dictionary of Invertebrates, 45–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-52869-3_7.

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Taylor, John D., and Emily A. Glover. "Chemosymbiotic Bivalves." In Topics in Geobiology, 107–35. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9572-5_5.

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Gagné, François, and Thierry Burgeot. "Bivalves in Ecotoxicology." In Encyclopedia of Aquatic Ecotoxicology, 247–58. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5704-2_24.

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Petersen, Jens Kjerulf, Marianne Holmer, Mette Termansen, and Berit Hasler. "Nutrient Extraction Through Bivalves." In Goods and Services of Marine Bivalves, 179–208. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96776-9_10.

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Venier, Paola, Marco Gerdol, Stefania Domeneghetti, Nidhi Sharma, Alberto Pallavicini, and Umberto Rosani. "Biotechnologies from Marine Bivalves." In Goods and Services of Marine Bivalves, 95–112. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96776-9_6.

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Norkko, Joanna, and Sandra E. Shumway. "Bivalves as Bioturbators and Bioirrigators." In Shellfish Aquaculture and the Environment, 297–317. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960967.ch10.

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Kasiotis, Konstantinos M., and Christina Emmanouil. "PAHs Pollution Monitoring by Bivalves." In Pollutants in Buildings, Water and Living Organisms, 169–234. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19276-5_5.

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Yoshioka, S., and M. Terai. "Manganese Accumulation in Freshwater Bivalves." In Mechanisms and Phylogeny of Mineralization in Biological Systems, 321–25. Tokyo: Springer Japan, 1991. http://dx.doi.org/10.1007/978-4-431-68132-8_52.

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Conference papers on the topic "Bivalves"

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Al fudhaili, Najat, Matthias López Correa, Axel Munnecke, Claudio Mazzoli, and Jaroslaw Stolarski. "RUDIST BIVALVES AS ENVIRONMENTAL ARCHIVES." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-352219.

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GIAROLA, Julia, Flávia CRISTIANES, Thayna VIEGAS, Sandro Ricardo COSTA, Marcos Pereira BASTOS, and Paulo Márcio Santos COSTA. "Aprimoramento da criação do molusco bivalve Nodipecten nodosos na Baía da Ilha Grande." In I Simpósio de bolsistas da FIPERJ. Fundação Instituto de Pesca do Estado do Rio de Janeiro - FIPERJ, 2022. http://dx.doi.org/10.57068/simposio.fiperj.332.

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A Baía da Ilha Grande está localizada no litoral sul fluminense e abrange os municípios de Paraty, Angra dos Reis e Mangaratiba. Essa região é, atualmente, a maior área de produção de moluscos bivalves do estado do Rio de Janeiro e, não por acaso, onde se concentra o maior número de fazendas marinhas. Dentre os moluscos bivalves cultivados, o destaque tem sido a vieira da espécie Nodipecten nodosus, nativa da costa brasileira. O abastecimento de sementes sempre se mostrou ser o elo mais frágil da cadeia produtiva das vieiras. Objetivando minimizar esse problema, um novo laboratório para larvicultura de moluscos bivalves foi construído na Ilha Grande em 2021, fruto de uma parceria entre a UFRJ e a UERJ, O presente projeto tem como objetivo treinar e capacitar mão-de-obra local, para atender a demanda de pessoas capazes de atuar nas rotinas do laboratório, desde os procedimentos de reprodução e larvicultura, bem como nas fazendas marinhas. Além disso, pretende-se dar oportunidade ao ingresso de mulheres na maricultura, visto que, atualmente é uma atividade realizada quase que exclusivamente por homens, indo de encontro às ODS da ONU para a década do Oceano, em especial aos ODS 4, 8, 5, 10, 12, 14 e 17. Sendo assim, foram realizadas atividades de capacitação e treinamento como: levantamento bibliográfico; aulas teóricas e práticas sobre os tipos de cultivo e a morfologia de moluscos bivalves; reconhecimento dos materiais e equipamentos de uma fazenda marinha; atividades de rotina do laboratório da praia do Bananal; desova e larvicultura de vieiras; cultivo de microalgas; capacitação em coleta de amostra de moluscos bivalves para análise molecular e histológica; acompanhamento do manejo. Conforme previsto, foi elaborada uma cartilha com o intuito de transmitir informações básicas, de forma simples e objetiva, para pessoas interessadas em maricultura. Além disso foi desenvolvido um sistema de anotações para aumentar o controle e otimizar a produção de vieiras.
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Moss, David K., Linda C. Ivany, Roger D. K. Thomas, and Donna Surge. "LATITUDINAL LIFE-HISTORY GRADIENTS IN FOSSIL BIVALVES." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-321708.

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Prieto, Alejandro. "DEEP TIME HISTORICAL BIOGEOGRAPHY OF MYTILID BIVALVES." In GSA Connects 2023 Meeting in Pittsburgh, Pennsylvania. Geological Society of America, 2023. http://dx.doi.org/10.1130/abs/2023am-395386.

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Nolan, Rhiannon, Corinne Myers, and Alexander Farnsworth. "TESTING THE NICHE CENTER HYPOTHESIS ON PLEISTOCENE BIVALVES." In GSA Connects 2023 Meeting in Pittsburgh, Pennsylvania. Geological Society of America, 2023. http://dx.doi.org/10.1130/abs/2023am-390374.

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Bosheim, Steingrim, Michael L. Carroll, Stanislav Denisenko, Andrey Voronkov, William Ambrose, and Gregory Henkes. "Arctic Bivalves As Indicators Of Environmental Variation - Baseline Data." In SPE International Conference on Health, Safety, and Environment in Oil and Gas Exploration and Production. Society of Petroleum Engineers, 2008. http://dx.doi.org/10.2118/111558-ms.

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McRoberts, Christopher. "REAPPRISIAL OF BIVALVES AND THE END-TRIASSIC MASS EXTINCTION." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322231.

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Khouja, Safia C., Stewart M. Edie, Katie S. Collins, and David Jablonski. "BIVALVES UNHINGED: HINGE MORPHOLOGY AND BIOMECHANICS IN THE VENERIDAE." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-323872.

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Maravillas, Alme B. "Predicting Geographic Distribution and Potential Habitat of Marine Bivalves *." In 2024 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream). IEEE, 2024. http://dx.doi.org/10.1109/estream61684.2024.10542596.

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Hayami, Yuichi, and Yuichi Hayami. "DECADAL SCALE VARIATION IN BOTTOM DO AND COD DYNAMICS IN THE INNER AREA OF ARIAKE SEA, JAPAN." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b939063c9c3.99016046.

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The dissolved oxygen, COD (Chemical Oxygen Demand) and DIN (Dissolved Inorganic Nitrogen) data for more than 30 years in the inner area of Ariake Sea, Japan were analyzed with a box model. The bottom water in this area easily became hypoxic from the 1970s to the early 90s associated with the increase in COD. There were minimal increases in terrestrial COD and nutrient loads in this period and there remained tidal flats over a widespread area. The increase in COD was caused by the increase in internal production (net ecosystem production in the sea). This would be due to the enhanced primary production induced by the increase in freshwater residence time and the decrease in bivalves grazing. The increase in freshwater residence time would have been caused by the decline of tidal amplitude mainly generated by the decrease of outer sea tidal amplitude. There would be a negative feedback control where hypoxia tends to progressively increase leading to declines in bivalve biomass which subsequently remove grazing pressure limiting primary production and on senescence of blooms of phytoplankton enhances hypoxia. The possibility of the influence of the Isahaya sea dike construction and how to improve the hypoxic conditions are also discussed.
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Reports on the topic "Bivalves"

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KUHNE, WENDY. ANALYSIS OF MICROPLASTICS IN BIVALVES ALONG FOURMILE BRANCH. Office of Scientific and Technical Information (OSTI), October 2021. http://dx.doi.org/10.2172/1827687.

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Jansen, Henrice, and Lisanne van den Bogaart. Blue carbon by marine bivalves : Perspective of Carbon sequestration by cultured and wild bivalve stocks in the Dutch coastal areas. Den Helder: Wageningen Marine Research, 2020. http://dx.doi.org/10.18174/537188.

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Baechler, Britta. Microplastics in Pacific Northwest Bivalves: Ecological Prevalence, Harvester-Consumer Exposure, and Aquarium Exhibit Outcomes. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.7488.

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Antrim, L. D., R. M. Thom, and W. W. Gardiner. Lincoln Park shoreline erosion control project: Monitoring for surface substrate, infaunal bivalves and eelgrass, 1993. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10185939.

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Schotanus, Jildou, Hans van de Vis, and Nathalie Steins. Welfare of bivalves in aquaculture? : A first literature scan and plan for a comprehensive search. Yerseke: Wageningen Marine Research, 2022. http://dx.doi.org/10.18174/577988.

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Hall, R. L., T. P. Poulton, and L. Diakow. Lower bajocian [middle jurassic] ammonites and bivalves from the Whitesail Lake area, west-central British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132682.

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Lanik, Amanda, Mikaela Ruga, Chad Hults, and Claire Schmid. Paleontological resources monitoring at Fossil Point, Lake Clark National Park and Preserve: 2019 field report. National Park Service, 2024. http://dx.doi.org/10.36967/2300633.

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Fossil Point is an exceptionally rich and scientifically important fossil locality found in Lake Clark National Park and Preserve. The rocks at Fossil Point are known for their abundant and well-preserved Middle Jurassic invertebrate fossils, including bivalves, ammonites, and belemnites. The abundance and quality, as well as the relatively easy coastal access, makes the fossils at Fossil Point vulnerable to unauthorized collection. Anecdotal evidence suggests that collection without a permit is occurring at Fossil Point and has been for decades. Monitoring of the prevalence and scale of unauthorized collecting was initiated at Fossil Point in 2018 (Lanik et al. 2019). The findings of the 2018 fieldwork indicated that visitors to Fossil Point were exhibiting behaviors related to fossil collection. However, flaws in the study design made it impossible to differentiate if the loss of fossils over the summer season was related to natural erosional processes or anthropogenic activity. This report summarizes monitoring of fossils and visitors at Fossil Point in the summer (May-August) of 2019. This study built upon the monitoring of the previous summer and the purpose was twofold: (1) assess visitation to Fossil Point, and (2) document the loss of paleontological resources via unauthorized collection.
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Harrington, Matthew, Amanda Lanik, Chad Hults, and Patrick Druckenmiller. Focused condition assessment of paleontological resources within Katmai National Park and Preserve. National Park Service, 2023. http://dx.doi.org/10.36967/2298782.

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The paleontological resources (fossils) of Katmai National Park and Preserve (also referred to as ?the park? or ?Katmai? throughout this report) record the evolution of the park?s ancient life throughout most of the Mesozoic Era and portions of the Cenozoic Era (see Table 1 for a geologic time scale). A focused condition assessment (FCA) of the paleontological resources of Katmai was conducted in 2021; this report summarizes the findings of the FCA, including information on the park?s geology and paleontology, management issues related to paleontological resources, and the results of a field survey of the Kamishak Bay area. The FCA project also included fieldwork to monitor fossils at Kaguyak Point. The results of the Kaguyak Point monitoring are presented in Harrington et al. (In preparation). The first section of this report (?Paleontology?) examines the fossiliferous geologic units within Katmai as well as the fossils found within them. Fossils range from small bivalves and belemnites to large ammonites and a possible dinosaur bone. Plant fossils are abundant in the Eocene-aged Copper Lake Formation, Ketavik Formation, and Hemlock Conglomerate. The Jurassic-aged Naknek and Cretaceous-aged Kaguyak Formations are the most abundantly fossiliferous units within the park, containing ammonites, bivalves, brachiopods, gastropods, and other invertebrates. The ?Paleontological Resources Monitoring and Management? section of this report discusses potential threats to paleontological resources and management recommendations. The fossils within Katmai are nonrenewable resources that the NPS is mandated to protect, preserve, and manage. Fossils can be at risk of damage or loss from natural (e.g., erosion) and/or anthropogenic (e.g., unauthorized collection) forces. Damage or loss of fossils greatly reduces the scientific value they possess, as well as degrades the overall heritage of the park. Most of the park?s fossils have a low risk for anthropogenic impacts because many fossil sites are remote and receive little visitation. Areas in the park that contain fossils and receive visitors include the Brooks Camp area, Ukak Falls, the Valley of Ten Thousand Smokes, Hallo Bay, and Kaguyak Point. Fieldwork was conducted during the summer of 2021 to explore Katmai for new vertebrate fossil localities (?Kamishak Bay Reconnaissance? section of this report). The current extent of vertebrate fossils within Katmai is limited to a single heavily worn bone chunk that was found in the vicinity of Ukak Falls. Vertebrate fossils have been uncovered south of the park near Becharof Lake and near Chignik Bay in the Indecision Creek Member of the Naknek Formation. To search for vertebrate fossils, exposures of the Indecision Creek Member of the Naknek Formation were surveyed along the coast of Kamishak Bay. Bluffs and outcrops were examined for fossils and evidence supporting the existence of vertebrate trackways or remains. The study determined that exposures of the Indecision Creek Member along Kamishak Bay are unlikely to contain vertebrate fossils. This portion of the member contained marine fossils and driftwood, indicating deposition in a marine environment, and the rock outcrops fractured perpendicularly to the bedding plane, limiting the potential for preserving fossil trackways. Future exploration for vertebrate fossils in Katmai could target Mt Katolinat and Ukak Falls.
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Desbiens, S. Le bivalve dévonien Prosocoelus Keferstein, 1857 dans le nord-est de l'Amérique du Nord. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/194752.

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10

Mullineaux, Lauren S., and Stanley R. Hart. Use of Trace Elements in the Larval Shell as a Marker of Bivalve Dispersal. Fort Belvoir, VA: Defense Technical Information Center, May 2001. http://dx.doi.org/10.21236/ada389619.

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