scholarly journals Sample checklist of Gastropoda and Bivalvia in Cham Islands, Vietnam

2019 ◽  
Vol 7 ◽  
Author(s):  
Do Tu ◽  
Le Anh ◽  
Luu Anh ◽  
Takenori Sasaki ◽  
Tran Tuan
Keyword(s):  
Poor Country ◽  
Biodiversity Monitoring ◽  
Online Data ◽  
Marine Molluscs ◽  
Marine Mollusc ◽  
Shared Data ◽  
Central Vietnam ◽  
Marine Bivalves ◽  
Mollusc Species ◽  
And Function

Cham Islands (Cu Lao Cham) is a group of 8 small islands in the Quang Nam province, Central Vietnam. There is only one study that mentioned the diversity of marine molluscs in this area. However, the data on species composition have not been digitised and not stored or shared for other purposes. Our paper aims to share the checklist of marine mollusc species (Bivalvia and Gastropoda) species that we collected from the littoral zone of Cham Islands in May 2017. This is the first digitised and online data of marine molluscs in Vietnam. It is very important for researchers in various fields such as the structure and function of ecology and biodiversity monitoring. This study provides a checklist of the marine bivalves and snails in the Cham Islands of Vietnam. Moreover, this first widely shared data of biodiversity in Vietnam can trigger biodiversity data papers in this data-poor country. The data of this study will be important inputs for better understanding biodiversity on the Cham Islands and Vietnam as well as for forming the basis for monitoring, exploitation and conservation of biodiversity in this area. In total, 145 taxa were recorded, 46 bivalve taxa and 99 snail taxa, from which 128 were identified to the species level and 17 were identified to the genus level. There are 116 new species records for the Cham Islands. The specimens are currently deposited in the Institute of Ecology and Biological Resources (IEBR), Vietnam Academy of Science and Technology (VAST).

Possible impacts of zoosporic parasites in diseases of commercially important marine mollusc species: part I. Perkinsozoa

2017 ◽  
Vol 60 (4) ◽  
Author(s):  
Frank H. Gleason ◽  
Osu Lilje ◽  
Cecile Dang ◽  
Sabrina Geraci-Yee ◽  
Jackie L. Collier
Keyword(s):  
Important Species ◽  
Marine Mollusc ◽  
Mollusc Species ◽  
Commercially Important

AbstractThe phylum Perkinsozoa includes well-known parasites of commercially important species of molluscs in aquaculture, such as

scholarly journals Studi Komunikasi Antarpribadi Anak Dengan Orang Tua Tiri

2017 ◽  
Vol 9 (1) ◽  
pp. 74
Author(s):  
Chaterine Setiawan ◽  
Suzy Azeharie
Keyword(s):  
Interpersonal Communication ◽  
Communication Theory ◽  
Secondary Data ◽  
Primary Data ◽  
Online Data ◽  
Biological Parents ◽  
Communication Function ◽  
And Function ◽  
Role And Function ◽  
Better Than

This study discusses the communication between the child and the stepparent and use the theory that consists of communication theory, communication function, the purpose of communication, interpersonal communication, effective interpersonal communication, interpersonal communication role and function of interpersonal communication. This study used a qualitative method with descriptive qualitative approach. The data used in this study consisted of primary data and secondary data. The primary data of the interviews with sources consisting of four children and one stepparent. While the secondary data obtained from other sources such as books and online data searches. The technique of collecting data using interviews, observation, literature review and data searches online. From this research it is known that children who learn about and understand the prospective stepparent before she married biological parents do relatively better than those who do not recognize his step prospective parents before marriage. It is also known that the interpersonal communication of children with stepparents dependent based on the character of the child and the stepparent respectively. Penelitian ini membahas tentang komunikasi antara anak dengan orang tua tiri dan menggunakan teori yang terdiri dari teori komunikasi, fungsi komunikasi, tujuan komunikasi, komunikasi antarpribadi, komunikasi antarpribadi yang efektif, peranan komunikasi antarpribadi dan fungsi komunikasi antarpribadi. Penelitian ini menggunakan metode kualitatif dengan pendekatan deskriptif kualitatif. Data yang digunakan dalam penelitian ini terdiri dari data primer dan data sekunder. Data primer berupa hasil wawancara dengan narasumber yang terdiri dari empat orang anak dan satu orang tua tiri. Sedangkan data sekunder berupa data yang diperoleh dari buku dan sumber lain seperti penelusuran data online. Teknik pengumpulan data dengan menggunakan wawancara, observasi, kajian pustaka dan penelusuran data online. Dari penelitian ini diketahui bahwa anak yang mengetahui dan mengenal calon orang tua tiri sebelum menikah dengan orang tua kandungnya hubungannya relatif lebih baik dibandingkan anak yang tidak mengenal calon orang tua tirinya sebelum menikah. Selain itu juga diketahui bahwa komunikasi antarpribadi anak dengan orang tua tiri tergantung berdasarkan karakter dari anak dan orang tua tiri masing-masing.   

scholarly journals PALEOECOLOGICAL HABITAT OF THE LATE QUATERNARY MOLLUSCS OF THE NORTHERN FORE-CASPIAN LOWLAND ON THE EXAMPLE OF THE KOSIKA 1 LOCALITY

2015 ◽  
Vol 4 (2) ◽  
pp. 120-123
Author(s):  
Regina Navkatova Miftakhova ◽  
Guzel Anvarovna Danukalova
Keyword(s):  
River Flow ◽  
Late Quaternary ◽  
Fluvial Deposits ◽  
Marine Deposits ◽  
Marine Mollusc ◽  
Layer 2 ◽  
Layer 4 ◽  
Caspian Lowland ◽  
Mollusc Species ◽  
Shell Fragments

Investigations of the Middle-Late Neopleistocene deposits of the Kosika 1 locality and studied malacological complexes permit to understand changes of the main geological events of the territory and to identify molluscs palaeoecologihal habitats. Brakishwater and freshwater lakes existed on the territory after Early Khazarian Sea regression (beginning of the Late Neopleistocene; layer 1). Marine deposits accumulated during Late Khazarian Sea transgression (first half of the Late Neopleistocene; layer 2). Big river (Paleo-Volga) existed after the regression of the Late Khazarian Sea. This river flow to the south in the direction of the coastline retreatment. Fluvial deposits prove river existence (layer 4). Marine deposits with special key mollusc species accumulated during the Khvalynian Sea transgression. Again, river existed after regression of this sea. Alluvium is on the top of the Khvalynian section, it is contain rich complex of the freshwater and marine mollusc species (layer 5). Fluvial-marine deposits form the underwater delta, which accumulated during Late Khvalynian time. These deposits contain shell fragments of freshwater and marine mollusc species. Deposits of the underwater delta form in the relief elongated hills, which are known as Ber bugor among geomorphologists.

scholarly journals Toxicity of Carbon, Silicon, and Metal-Based Nanoparticles to the Hemocytes of Three Marine Bivalves

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 827 ◽  
Author(s):  
Konstantin Pikula ◽  
Vladimir Chaika ◽  
Alexander Zakharenko ◽  
Anastasia Savelyeva ◽  
Irina Kirsanova ◽  
...  
Keyword(s):  
Anthropogenic Activities ◽  
Aquatic Toxicity ◽  
Marine Species ◽  
Cytotoxic Effects ◽  
Membrane Polarization ◽  
Silicon Nanotubes ◽  
Modiolus Modiolus ◽  
Marine Bivalves ◽  
Mollusc Species ◽  
Living Organisms

Nanoparticles (NPs) have broad applications in medicine, cosmetics, optics, catalysis, environmental purification, and other areas nowadays. With increasing annual production of NPs, the risks of their harmful influence on the environment and human health are also increasing. Currently, our knowledge about the mechanisms of the interaction between NPs and living organisms is limited. The marine species and their habitat environment are under continuous stress owing to the anthropogenic activities, which result in the release of NPs in the aquatic environment. We used a bioassay model with hemocytes of three bivalve mollusc species, namely, Crenomytilus grayanus, Modiolus modiolus, and Arca boucardi, to evaluate the toxicity of 10 different types of NPs. Specifically, we compared the cytotoxic effects and cell-membrane polarization changes in the hemocytes exposed to carbon nanotubes, carbon nanofibers, silicon nanotubes, cadmium and zinc sulfides, Au-NPs, and TiO2 NPs. Viability and the changes in hemocyte membrane polarization were measured by the flow cytometry method. The highest aquatic toxicity was registered for metal-based NPs, which caused cytotoxicity to the hemocytes of all the studied bivalve species. Our results also highlighted different sensitivities of the used tested mollusc species to specific NPs.

scholarly journals Bioactive Peptides from Marine Molluscs – A Review

2019 ◽  
pp. 1-12
Author(s):  
Queensley A. Eghianruwa ◽  
Omolaja R. Osoniyi ◽  
Naomi Maina ◽  
Sabina Wachira
Keyword(s):  
Clinical Trials ◽  
Bioactive Compounds ◽  
Marine Environment ◽  
Bioactive Peptides ◽  
Therapeutic Agents ◽  
Marine Organisms ◽  
Marine Molluscs ◽  
Marine Mollusc ◽  
Number Of Species ◽  
Global Biodiversity

Marine organisms make up approximately half of the total global biodiversity, with the Mollusca containing the second largest number of species, including snails and bivalves. The marine environment is highly competitive, hostile and aggressive, which has led to the production of specific and potent bioactive compounds by the mollusca and their associated microorganisms, in a bid to protect themselves and ensure their survival. A diverse array of bioactive compounds can be isolated from the extracts of marine molluscs of which linear, cyclic, and conjugated peptides and depsipeptides form some of the most important bioactive compounds that have been well characterized and some of have already reached clinical trials or been approved for use as therapeutic agents and supplements. This review highlights some of the bioactive peptides that have been obtained from marine molluscs as well the challenges facing bioprospecting of valuable peptides from marine mollusc sources.

scholarly journals psychTestR: An R package for designing and conducting behavioural psychological experiments

2020 ◽  
Author(s):  
Peter M. C. Harrison
Keyword(s):  
Data Collection ◽  
R Package ◽  
Automated Testing ◽  
Stimulus Selection ◽  
Online Data ◽  
Software Pipeline ◽  
Response Data ◽  
Online Data Collection ◽  
And Function ◽  
Psychological Experiments

This paper introduces psychTestR, a new R package for designing and conducting behavioural psychological experiments. psychTestR allows users to combine data analysis and data collection into a coherent software pipeline, and therefore facilitates complex experiment designs where stimulus selection is guided by online analysis of existing response data. It supports a modular approach to experiment design, where code is parcelled up into easily distributable functions, modules, and packages. It provides a sophisticated internationalisation paradigm, whereby experiments are implemented with reference to multilingual dictionaries. It also provides powerful tools for automated testing, whereby the researcher can simulate a participant's progression through the experiment and thereby test the robustness of the implementation. The resulting experiments can be deployed either to local computers for lab testing or to remote servers for online data collection. Software downloads, introductory articles, tutorials, and function-level documentation are available at the psychTestR website, http://psychtestr.com.

scholarly journals Moluscos de la expedición del RIV Edwin Link en las costas del Caribe mexicano

2015 ◽  
pp. 625-631
Author(s):  
Norma Emilia González
Keyword(s):  
Deep Water ◽  
Marine Mollusc ◽  
Mexican Caribbean ◽  
Mollusc Species

A checklist of marine mollusc species mainly from deep-water localities off Mexican Caribbean shores is pre­ sented.Samples were obtained with a mechanical arm in 2-307 m during the. expedition of (hé RIV "Edwin Link", August 1990; the listinclud¡:s 59 species of Oastropoda, 17 species of Bivalvia, tbree species of Scaphopoda and three species of Polyplacophóra.

scholarly journals Structural flexibility and protein adaptation to temperature: Molecular dynamics analysis of malate dehydrogenases of marine molluscs

2018 ◽  
Vol 115 (6) ◽  
pp. 1274-1279 ◽  
Author(s):  
Yun-wei Dong ◽  
Ming-ling Liao ◽  
Xian-liang Meng ◽  
George N. Somero
Keyword(s):  
Molecular Dynamics ◽  
Root Mean Square ◽  
Temperature Effects ◽  
Significant Negative Correlation ◽  
Dynamics Simulation ◽  
Heat Denaturation ◽  
Structural Flexibility ◽  
Mean Square ◽  
Marine Molluscs ◽  
And Function

Orthologous proteins of species adapted to different temperatures exhibit differences in stability and function that are interpreted to reflect adaptive variation in structural “flexibility.” However, quantifying flexibility and comparing flexibility across proteins has remained a challenge. To address this issue, we examined temperature effects on cytosolic malate dehydrogenase (cMDH) orthologs from differently thermally adapted congeners of five genera of marine molluscs whose field body temperatures span a range of ∼60 °C. We describe consistent patterns of convergent evolution in adaptation of function [temperature effects on KM of cofactor (NADH)] and structural stability (rate of heat denaturation of activity). To determine how these differences depend on flexibilities of overall structure and of regions known to be important in binding and catalysis, we performed molecular dynamics simulation (MDS) analyses. MDS analyses revealed a significant negative correlation between adaptation temperature and heat-induced increase of backbone atom movements [root mean square deviation (rmsd) of main-chain atoms]. Root mean square fluctuations (RMSFs) of movement by individual amino acid residues varied across the sequence in a qualitatively similar pattern among orthologs. Regions of sequence involved in ligand binding and catalysis—termed mobile regions 1 and 2 (MR1 and MR2), respectively—showed the largest values for RMSF. Heat-induced changes in RMSF values across the sequence and, importantly, in MR1 and MR2 were greatest in cold-adapted species. MDS methods are shown to provide powerful tools for examining adaptation of enzymes by providing a quantitative index of protein flexibility and identifying sequence regions where adaptive change in flexibility occurs.

Thirteen new records to inventory of marine mollusc species from Santa Catarina State, Central Southern Brazil

2014 ◽  
Vol 1 (2) ◽  
pp. 35
Author(s):  
A. Ignacio Agudo-Padrón
Keyword(s):  
New Records ◽  
The State ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Marine Mollusc ◽  
Sea Slugs ◽  
Mollusc Species ◽  
Santa Catarina State

Based in reliable bibliographical technical reports of recent production, a new total of thirteen marine mollusc forms (eleventh gastropods - sea slugs, and two bivalves) are added and incorporated to the previous systematic malacological inventory of Santa Catarina s State-SC, Central Southern Brazil Region, the species Pleurobranchus testudinarius Cantraine, 1835, Cuthona cf. iris Edmunds & Just, 1983, Flabellina cf. marcusorum Gosliner & Kuzirian, 1990, Dondice occidentalis Engel, 1925, Phidiana lynceus Bergh, 1867, Tyrinna (= Okenia) evelinae (Marcus, 1958), Felimida (= Hypselodoris) marci (Marcus,1971), Tambja sp, Roboastra sp, Glaucus atlanticus Foster, 1777, Bursatella leachi Blainville, 1817, Eurytellina angrensis Marques & Simone, 2014, and Crassostrea mangle Amaral & Simone, 2014, included in thirteen genera and eleventh families, raise the state record for 667 species and subspecies regionally known (11 Polyplacophora, 408 Gastropoda, 10 Scaphopoda, 228 Bivalvia, and 10 Cephalopoda).

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