scholarly journals Analysis of composition and abundance of viral communities associated with coral \(\textit{Acropora formosa}\)

2021 ◽  
Vol 43 (3) ◽  
pp. 113-123
Author(s):  
Doan Thi Nhung ◽  
Bui Van Ngoc
Keyword(s):  
Economic Development ◽  
Coral Bleaching ◽  
Coastal Communities ◽  
Marine Animals ◽  
Coral Mucus ◽  
Bleached Coral ◽  
The World ◽  
Viral Communities ◽  
Acropora Formosa ◽  
Coral Health

Coral reefs harbor the extraordinary biodiversity and not only provide livelihoods for coastal communities but also play a crucial role in economic development generally. Unfortunately, they are in decline in Vietnam and around the world because mass coral bleaching events have become more common worldwide. However, little is discovered, about viruses that infect corals and their symbionts. Herein, we present metagenomic analyses of the viral communities in coral mucus associated with healthy and bleached coral Acropora formosa which was collected at Con Dao Island, Vietnam. Interestingly, the number of viral species in bleached specimens are higher than those in healthy status. Viruses similar to those that infect humans and some marine animals also appeared in the coral viral assemblage. The results indicated that the proportion of shared viruses were quite small, and represented extremely abundance. Among the phage identified, vibriophage and cyanophage were only presented in healthy and bleached coral, respectively. Therefore, coral-associated viruses could prospectively infect all constituents of the holobiont - coral, microalgal and microbial. Thus, we expect viruses to be illustrated prominently in the preservation and breakdown of coral health.

scholarly journals Coral Mucus Is a Hot Spot for Viral Infections

2015 ◽  
Vol 81 (17) ◽  
pp. 5773-5783 ◽  
Author(s):  
Hanh Nguyen-Kim ◽  
Yvan Bettarel ◽  
Thierry Bouvier ◽  
Corinne Bouvier ◽  
Hai Doan-Nhu ◽  
...  
Keyword(s):  
Viral Infections ◽  
Hot Spot ◽  
Life Strategy ◽  
Surrounding Water ◽  
Coral Mucus ◽  
Content Type ◽  
Nha Trang Bay ◽  
Tightly Coupled ◽  
Viral Communities ◽  
Coral Health

ABSTRACTThere is increasing suspicion that viral communities play a pivotal role in maintaining coral health, yet their main ecological traits still remain poorly characterized. In this study, we examined the seasonal distribution and reproduction pathways of viruses inhabiting the mucus of the scleractiniansFungia repandaandAcropora formosacollected in Nha Trang Bay (Vietnam) during an 11-month survey. The strong coupling between epibiotic viral and bacterial abundance suggested that phages are dominant among coral-associated viral communities. Mucosal viruses also exhibited significant differences in their main features between the two coral species and were also remarkably contrasted with their planktonic counterparts. For example, their abundance (inferred from epifluorescence counts), lytic production rates (KCN incubations), and the proportion of lysogenic cells (mitomycin C inductions) were, respectively, 2.6-, 9.5-, and 2.2-fold higher in mucus than in the surrounding water. Both lytic and lysogenic indicators were tightly coupled with temperature and salinity, suggesting that the life strategy of viral epibionts is strongly dependent upon environmental circumstances. Finally, our results suggest that coral mucus may represent a highly favorable habitat for viral proliferation, promoting the development of both temperate and virulent phages. Here, we discuss how such an optimized viral arsenal could be crucial for coral viability by presumably forging complex links with both symbiotic and adjacent nonsymbiotic microorganisms.

scholarly journals Will community calcification reflect reef accretion on future, degraded coral reefs?

2021 ◽  
Author(s):  
Coulson A. Lantz ◽  
William Leggat ◽  
Jessica L. Bergman ◽  
Alexander Fordyce ◽  
Charlotte Page ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Bleaching ◽  
Elevated Temperatures ◽  
Coral Cover ◽  
Coral Tissue ◽  
Bleaching Event ◽  
Bleached Coral ◽  
Coral Health ◽  
Percent Area

Abstract. Coral bleaching events continue to drive the degradation of coral reefs worldwide, causing a shift in the benthic community from coral to algae dominated ecosystems. Critically, this shift may decrease the capacity of degraded coral reef communities to maintain net positive accretion during warming-driven stress events (e.g., reef-wide coral bleaching). Here we measured rates of net ecosystem calcification (NEC) and net ecosystem production (NEP) on a degraded coral reef lagoon community (coral cover  20 %) during a reef-wide bleaching event in February of 2020 at Heron Island on the Great Barrier Reef. We found that during this bleaching event, rates of community NEP and NEC across replicate transects remained positive and did not change in response to bleaching. Repeated benthic surveys over a period of 20 d indicated an increase in the percent area of bleached coral tissue, corroborated by relatively low Symbiodiniaceae densities (~0.6 × 106 cm−2) and dark-adapted photosynthetic yields in photosystem II of corals (~0.5) sampled along each transect over this period. Given that a clear decline in coral health was not reflected in the overall community NEC estimates, it is possible that elevated temperatures in the water column that compromise coral health enhanced the thermodynamic favourability for calcification in other, ahermatypic benthic calcifiers. These data suggest that positive NEC on degraded reefs may not equate to the net positive accretion of reef structure in a future, warmer ocean. Critically, our study highlights that if coral cover continues to decline as predicted, NEC may no longer be an appropriate proxy for reef growth as the proportion of the community NEC signal owed to ahermatypic calcification increases and coral dominance on the reef decreases.

Between Modernization and Stagnation: Economic Policy in 2012

2013 ◽  
pp. 4-23 ◽  
Author(s):  
V. Mau
Keyword(s):  
Economic Policy ◽  
Economic Development ◽  
Russian Economic Development ◽  
Structural Transformation ◽  
Economic Performance ◽  
Historical Analysis ◽  
Oil Boom ◽  
The World

The paper deals with the trends in the world and Russian economies towards development of a new post-crisis system, including technological and structural transformation. Three main scenarios of Russian economic development (conservative, innovation and acceleration) are discussed basing on historical analysis of Russian economic performance since 1970-s when oil boom started. On this basis key challenges of economic policy in 2013 are discussed.

New challenges to the economic security of Russia and the world and counteraction methods

2020 ◽  
Vol 16 (7) ◽  
pp. 1246-1263
Author(s):  
S.B. Zainullin ◽  
O.A. Zainullina
Keyword(s):  
Economic Development ◽  
Economic Crisis ◽  
Economic Security ◽  
Economic Policies ◽  
Economic Decline ◽  
Current Crisis ◽  
Initial Stage ◽  
The World ◽  
Analysis And Synthesis ◽  
Global Threat

Subject. The 2020 economic crisis has become a global threat to the economic security of States, corporations and households. The elimination of this threat to economic security is a key priority of the State. Objectives. The article is dedicated to factors of the current crisis, both individually and in aggregate, as well as forecasts of the economic development during the crisis. Methods. The study is based on the scientific knowledge as dialectic, a combination of historical and logical unity, structural analysis, traditional methods of economic analysis and synthesis. Results. We carried out the comparative analysis of crisis theories, forecasted the economic development of the IMF, the World Bank, the Audit Chamber, and considered analytical agencies in dynamics, taking into account adjustments when the crisis manifests itself. Counteraction methods are reviewed from theoretical and practical perspectives. The article also analyzed the international expertise in crisis management. Conclusions and Relevance. The economic crisis was found to be at its initial stage, with negative scenarios being more probable. Proposed and implemented, local measures can mitigate the economic decline, prevent massive bankruptcies and a social explosion. Meanwhile, measures to restructure the economic policy may contribute to overcoming the crisis. The findings can be used by federal government bodies to adjust economic policies, develop programs and strategies for the socio-economic development of regions, and economic security strategies for corporations.

DEVELOPMENT OF THE WORLD MARKET OF SERVICES IN TURBULENCE CONDITIONS AND CHANGES

2017 ◽  
Author(s):  
Larysa Nosach ◽  
◽  
Victoria Morgun ◽  
Keyword(s):  
Economic Development ◽  
International Trade ◽  
Service Sector ◽  
World Market ◽  
Global Dimension ◽  
Trade In Services ◽  
Current State ◽  
The World

The author's research of the current state and features of the development of the world market for services in conditions of turbulence of world processes was carried; the world leaders of the service sector in the global dimension and leaders of the most dynamic articles of service categories were identified; the share of world exports of services by countries by the level of their economic development was justified; weaknesses in the assessment of indicators of international trade in services were identified; the research is based on UNCTAD statistics.

EMPOWERING WOMEN THROUGH ENTREPRENEURSHIP: ASPECTS AND APPROACHES

2014 ◽  
Vol 6 (01) ◽  
Author(s):  
JAVED ALAM SHEIKH
Keyword(s):  
Economic Development ◽  
Developed Countries ◽  
Substantial Contribution ◽  
Economic Empowerment ◽  
World Population ◽  
Least Developed Countries ◽  
The Road ◽  
Road Map ◽  
The World ◽  
The Status

Almost 50 per cent of the world population is constituted by the women and they have been making substantial contribution to socio-economic development. But, unfortunately their tremendous contribution remains unrecognized and unnoticed in most of the developing and least developed countries causing the problem of poverty among them. Empowering women has become the key element in the development of an economy. With women moving forward, the family moves, the village moves and the nation moves. Hence, improving the status of women by way of their economic empowerment is highly called for. Entrepreneurship is a key tool for the economic empowerment of women around the world for alleviating poverty. Entrepreneurship is now widely recognized as a tool of economic development in India also. In this paper I have tried to discuss the reasons and role of Women Entrepreneurship with the help of Push and Pull factors. In the last I have also discussed the problems and the road map of Women Entrepreneurs development in India.

The Contribution and Prospect of 5G Technology to China's Economic Development

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Jiawen Fu
Keyword(s):  
Economic Development ◽  
Information And Communication Technology ◽  
Communication Technology ◽  
Social Life ◽  
Industrial Development ◽  
Key Technology ◽  
World Power ◽  
The World ◽  
The Status ◽  
Information And Communication

Since the birth of 5G, it has attracted much attention from all countries in the world. The development of 5G industry is particularly important for domestic economic development. 4G changes life, 5G changes society. 5G will not only accelerate the speed of people surfing the Internet, but also bring revolutionary changes to all aspects of social life, making people's lives, work and entertainment more convenient and diverse. The economic impact of the development of the 5G industry on China cannot be underestimated. Nowadays, information and communication technology has increasingly become a new driving force for economic development. 5G technology has already become a key technology pursuit for countries to compete for the status of world power, and it has also become an indispensable part of contemporary economic and social development. We should give full play to the government's guiding role, and work with network giants to build a new platform for cooperation, promote coordinated industrial development, achieve win-win results, and promote economic and social prosperity and development.

Remittance and Economic Development of Nepal

Patan Pragya ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 196-208
Author(s):  
Badri Narayan Sah
Keyword(s):  
Economic Development ◽  
Household Income ◽  
Poverty Reduction ◽  
Economic Status ◽  
Poverty Rate ◽  
Daily Consumption ◽  
Gulf Countries ◽  
The World ◽  
Internal Sources ◽  
Sources Of Capital

Nepal is one of the least developed but high remittances recipient countries in the world. Nepal received remittance from US$ 8.1 billion in 2016 and it is ranked 23rd among the remittance receiving countries in the world. Remittance income is one of the major sources of capital formation in the context of Nepal. It is directly related with the labour migration in a country which in return enhances foreign employment. Remittances have become a major contributing factor to increasing household income as well as country’s GDP. About 30 percent of Nepal’s GDP comes in the form of remittance money which is sent home by Nepalese working abroad and it helps to reduce country’s poverty rate. Poverty reduction took place in Nepal from 42 percent (1995/96) to 25.2 percent (2010/11). Nepal’s remittance recipients reached 31.5 percent GDP in 2015. The total amount of remittance in the country is 259 billion and among which 20 percent is internal sources, 11 percent from India and 69 percent from Gulf countries. Remittance received by the households is mainly used for daily consumption (79 percent) and remaining other purposes. Moreover, Nepal’s economic status mostly depends on remittance received which is therefore migration driven economy.

Modern patterns of development of the communication and informatization sphere

2019 ◽  
pp. 14-19
Author(s):  
Maryna Demyanchuk
Keyword(s):  
Economic Development ◽  
Information And Communication Technologies ◽  
Communication Technologies ◽  
Economic Resource ◽  
Telecommunication Services ◽  
The World ◽  
Information And Communication ◽  
Per Capita ◽  
Ict Development ◽  
Telecommunications Services

Information and telecommunication services are currently a full-fledged resource for social development compared to traditional resources. The growth of the level of scientific and technological progress has led to the incredibly fast development paces in the sphere of information and communication technologies, which has a significant impact on the development of the economy. On the basis of a thorough analysis of the sectors of information and communication technologies and components of the ICT development index, the article substantiates the need for accelerated digitization of the majority of enterprises of different spheres of economic activity with the aim of qualitative development of Ukrainian economy in order to increase its competitiveness in the world. This is explained by the fact that information and technology represent the main economic resource in the period of formation of information society and digital economy, and enterprises of the sphere of communication and informatization are a catalyst for social and economic development of the country as a whole. Using a methodological toolkit of the theory of systematic and correlation-regression analysis, an economic-mathematical model of the development of the sphere of communication and informatization in the regions of the world and individual countries of the world is constructed. It is based on the existing pattern of leading development of the communications sector, but takes into account the degree of economy dependence on the ICT development, which in some regions and countries is 100%. This is due to the approaching mass availability of ICT services in some countries in these regions. On the basis of the constructed model, the forecasting of GDP PPP per capita was carried out, which showed faster rates of growth of the country’s economy with the growth of the development level of the sphere of communication and informatization and accessibility of telecommunication services. In turn, the availability of telecommunication services is influenced by the digital skills of society and the level of their prices, which has necessitated determining the dependence of GDP PPP per capita on prices for communication services of countries with varying degrees of socio-economic development. This makes it possible to identify reserves for improving the productivity of individuals while increasing the availability of telecommunications services.

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