scholarly journals Influence of color and brightness on ontogenetic shelter preference by prawns (Macrobrachium rosenbergii)

2020 ◽  
Author(s):  
Felipe P. da Costa ◽  
Maria F. Arruda ◽  
Karina Ribeiro ◽  
Daniel M. A. Pessoa
Keyword(s):  
Avoidance Behavior ◽  
Macrobrachium Rosenbergii ◽  
Asian Countries ◽  
Ontogenetic Changes ◽  
Widespread Species ◽  
Great Range ◽  
Visual Modeling ◽  
The World ◽  
Light Avoidance ◽  
River Mouths

AbstractThe giant river prawn (Macrobrachium rosenbergii), native to rivers and river mouths of different Asian countries, is a heavily widespread species that has been introduced around the world due to its great commercial importance. These prawns are farmed under many different conditions that might translate to a great range of light environments, which impact their behavior and productivity. Here, as a contribution for prawns’ welfare and economical productivity, we present the first study employing both visual modeling and behavioral data to evaluate ontogenetic changes on color preference of juveniles and adults of M. rosenbergii. For this purpose, we offered ten shelters of different colors to juveniles and adults and registered their preference. Our results showed that the criterion for shelter preference changed with ontogeny, since juveniles chose shelters based on chromaticity (preference for blue), while adults based their decisions on brightness (preference for dark gray). This preference of adults for dark colors is probably associated with a light avoidance behavior. We recommend providing blue shelters for juveniles and dark shelters for adults.

scholarly journals Diet of Tadpoles of Microhyla ornata (Dumeril and Bibron,1841) from a Freshwater System in Rosekandy Tea Estate, Cachar, Assam and Significance of Conservation of Aquatic Habitats

2015 ◽  
Vol 10 (1) ◽  
pp. 238-244
Author(s):  
Mithra Dey ◽  
Shweta Goswami
Keyword(s):  
South Asian ◽  
Feeding Habit ◽  
Aquatic Habitats ◽  
Asian Countries ◽  
Widespread Species ◽  
Tea Plantation ◽  
Food Items ◽  
The World ◽  
Food And Feeding ◽  
Freshwater System

Anuran tadpoles are gregarious in nature and knowledge of food and feeding behavior of the tadpoles is very essential for their successful breeding and survival. Dramatic declines in amphibian populations have been noted since 1980 from all over the world and are thus perceived to be one of the most critical threats to global biodiversity. Microhyla ornata commonly known as Ornamented Pygmy Frog, belongs to Family- Microhylidae and is widespread species occurring throughout South Asian countries like Bangladesh, India, Myanmar, Pakistan, Sri Lanka as well as in Japan. Considering the occurrence of tea plantation in the region and the presence of aquatic bodies in tea estates it is necessary to know the feeding habit of the anuran tadpoles and impact of unavailability of suitable food items which will affect the survival and completion of life cycle of the tadpoles. In the present study it was observed that Microhyla ornata tadpoles feed mainly on various algal (25 genera) and detrital material. Hence, it may be concluded that aquatic habitats must be conserved and maintained so that conservation of anurans can be ensured.

Sex Differences in Mass Media Preferences Across Four Asian Countries

2011 ◽  
Vol 23 (4) ◽  
pp. 186-191 ◽  
Author(s):  
Malini Ratnasingam ◽  
Lee Ellis
Keyword(s):  
United States ◽  
Sex Differences ◽  
Mass Media ◽  
The United States ◽  
Female Students ◽  
The Internet ◽  
Evolutionary Explanation ◽  
Asian Countries ◽  
The World ◽  
Media Preferences

Background. Nearly all of the research on sex differences in mass media utilization has been based on samples from the United States and a few other Western countries. Aim. The present study examines sex differences in mass media utilization in four Asian countries (Japan, Malaysia, South Korea, and Singapore). Methods. College students self-reported the frequency with which they accessed the following five mass media outlets: television dramas, televised news and documentaries, music, newspapers and magazines, and the Internet. Results. Two significant sex differences were found when participants from the four countries were considered as a whole: Women watched television dramas more than did men; and in Japan, female students listened to music more than did their male counterparts. Limitations. A wider array of mass media outlets could have been explored. Conclusions. Findings were largely consistent with results from studies conducted elsewhere in the world, particularly regarding sex differences in television drama viewing. A neurohormonal evolutionary explanation is offered for the basic findings.

The Anticholinesterase Activity of Three Local Food Spices and Their Anti-Alzheimer Application

2020 ◽  
Vol 01 ◽  
Author(s):  
Ruqia Bibi ◽  
Saima Gul ◽  
Abdul Wahab ◽  
Mohammad Iqbal Khan ◽  
Murad Ali Khan
Keyword(s):  
Neurodegenerative Disorder ◽  
Curcuma Longa ◽  
Chloroform Extract ◽  
Food Plants ◽  
In Vivo Studies ◽  
Assay Method ◽  
Inhibiting Activity ◽  
Asian Countries ◽  
Phytochemical Study ◽  
The World

Background: The incidence of dementia is increasing as the aging population of the world is increasing. Alzheimer’s disease (AD) is the neurodegenerative disorder of the central nervous system. There are presently 7.3 million patents of AD and the number may rise to 34 million at this pace in the coming thirty years. In the disease, the level of Acetylcholine is reduced and as a result, causes the loss of cholinergic neurons in the brain. The disease is less common in Asian countries as compared to the western nations of the world. This work aimed to establish the role of the common medicinal and food plants against Alzheimer. Methods: The enzyme acetylcholinesterase (AChE) is the enzyme responsible for hydrolysis and reduction of Acetylcholine. The anti-acetylcholinesterase activity of different extracts of three local plants used as spices in the daily food, Curcuma longa, Cinnnamomum tamala, and Zingiber officinale, were determined using the Microplate Assay method. Results: The phytochemical study of the selected plants revealed the presence of alkaloids, terpenes, flavones, saponins, and tannins in these plants. The chloroform extract of all the three plants presented promising AChE inhibiting activity having IC50 >200μg/ml. A probable reason will be the alkaloids and terpenes present in the chloroform extract. Conclusion: The chloroform extract of all three plants presented promising AChE inhibiting activity and can become a reasonable therapy for the cure/ prevention of Alzheimer disease. The frequent use of these spices may be a possible reason for the fever incidence of Alzheimer in Asian countries. Further in vivo studies are required to find its action and studies to find the exact compound responsible for the action.

Beyond Technonationalism

2019 ◽  
Author(s):  
Kathryn C. Ibata-Arens
Keyword(s):  
Innovation Policy ◽  
High Technology ◽  
Entrepreneurial Activity ◽  
Asian Countries ◽  
Firm Creation ◽  
Biomedical Innovation ◽  
The World ◽  
Asian Economies ◽  
Biomedical Industry ◽  
Innovation And Entrepreneurship

What explains the rapid and sustained economic rise of Asian countries in high-technology industries, including biomedicals? The biomedical industry, comprised mainly of biopharmaceuticals and medical devices, is among the fastest growing globally and has been an economic-development target of national governments around the world. The book presents a conceptual framework to assess national government management of innovation and entrepreneurship in the fast-growing biomedical industry in Asia, which at current growth rates is on track to become the center of the world economy. Four Asian countries—China, India, Japan, and Singapore—are compared in terms of innovation capacities, government policy, and firm-level strategies underlying competitive advantages in high technology. The book argues that countries that pursue networked technonationalism have been effective in upgrading innovation capacity and also encouraging entrepreneurial activity in targeted industries. The study begins with a global-level analysis of biomedical innovation and entrepreneurship, identifying emerging concentrations of scientific citation, patenting, and firm creation—paying close attention to trends in Asian economies and future prospects. Findings indicate a gradual shift to Asian economies of many biomedical-innovation and new-business-creation activities. The book concludes with implications for innovation policy and entrepreneurship strategy in Asia and elsewhere.

Population Genetics ofCaenorhabditis elegans: The Paradox of Low Polymorphism in a Widespread Species

Genetics ◽  
2003 ◽  
Vol 163 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Arjun Sivasundar ◽  
Jody Hey
Keyword(s):  
Genetic Variation ◽  
Microsatellite Loci ◽  
Population Expansion ◽  
Widespread Species ◽  
C Elegans ◽  
Model Research ◽  
The World ◽  
Natural Isolates ◽  
History Of ◽  
Low Levels

AbstractCaenorhabditis elegans has become one of the most widely used model research organisms, yet we have little information on evolutionary processes and recent evolutionary history of this widespread species. We examined patterns of variation at 20 microsatellite loci in a sample of 23 natural isolates of C. elegans from various parts of the world. One-half of the loci were monomorphic among all strains, and overall genetic variation at microsatellite loci was low, relative to most other species. Some population structure was detected, but there was no association between the genetic and geographic distances among different natural isolates. Thus, despite the nearly worldwide occurrence of C. elegans, little evidence was found for local adaptation in strains derived from different parts of the world. The low levels of genetic variation within and among populations suggest that recent colonization and population expansion might have occurred. However, the patterns of variation are not consistent with population expansion. A possible explanation for the observed patterns is the action of background selection to reduce polymorphism, coupled with ongoing gene flow among populations worldwide.

scholarly journals Faux Fur Trade Networks Using Macroscopic Data: A Social Network Approach

2021 ◽  
Vol 13 (3) ◽  
pp. 1427
Author(s):  
Yeong-Hyeon Choi ◽  
Seong Eun Kim ◽  
Kyu-Hye Lee
Keyword(s):  
Social Network ◽  
The United States ◽  
Asian Countries ◽  
Total Trade ◽  
Trade Networks ◽  
Alternative Materials ◽  
The World ◽  
Social Network Approach ◽  
Materials Used ◽  
And Control

This study used social network analysis, which is often adopted to analyze changes in trade structures and the world trade network for faux fur products, which are alternative materials used in vegan fashion. The data on the total trade value of artificial fur (HS Code: 4304) and animal fur and leather (HS Code: 0505) imports and exports between countries were collected through UN Comtrade, and the degree and betweenness centralities were used to analyze the trade structure of faux fur in 2009, 2014, and 2019 using NodeXL 1.0.1 programs. The results of the study are as follows: First, while the total amount of export and import of faux fur is increasing globally every day, the total amount of export and import in other Asian countries and Vietnam is decreasing. Second, due to the reduction in exports of the main producing countries of animal materials such as China, global imports of animal fur and leather decreased. Third, China was the largest ex-porter of faux fur, exporting to a large number of countries; it also played an important role in the intermediation and control over faux fur export. In exporting faux fur, the influence of other Asian countries declined over time, and Vietnam and the United States played an outstanding role as arbitrators in the export network. Fourth, Italy and France were the largest importers of faux fur from various countries and exerted significant influence as intermediaries in the import network of faux fur. On the other hand, Vietnam’s influence in import network decreased. Saudi Arabia appeared to be an important arbitrator in mediating the import. This study is significant due to its findings, obtained through micro-trading data, in respect of industrial moves of ethical fashion in the form of increased trade in faux fur and decline in the trade of animal fur and leather.

The Global Environmental Agenda of 2021 and the tasks of sustainable energy-ecological development and cooperation between Japan and countries Southeast Asia

2021 ◽  
pp. 951-965
Author(s):  
Yana Vadimovna Mishchenko
Keyword(s):  
Southeast Asia ◽  
Power Plants ◽  
Thermal Power ◽  
Energy Transition ◽  
Southeast Asian ◽  
Asia Pacific ◽  
Asian Countries ◽  
Global Environmental ◽  
The World ◽  
Southeast Asian Countries

The article discusses the main results of two major international summits held in October-November 2021, the key topics of which were the issues of the global fight against climate change and environmental protection. The decisions taken at these conferences, with the broad participation of world leaders, reflect the fundamental trends of the global environmental agenda. Within the framework of this agenda, Japan and the countries of Southeast Asia are building their modern energy and environmental cooperation. In this context, the article examines the main urgent tasks of energy-environmental interaction and sustainable development of Japan and the states of Southeast Asia. These countries are located in the Asia-Pacific region, which remains until now the main emitter of greenhouse gases in the world. However, the indicators of environmental pollution by Japan and the Southeast Asian countries are relatively not so high, compared to some other states in the region and the world. The article discusses the most relevant and significant examples of bilateral and multilateral cooperation between these countries in areas related to curbing global warming and climate protection. It has been revealed that with all the efforts made, since the 1990s, the indicators of reducing harmful emissions into the atmosphere in Japan remain modest and even lag behind some of the Western countries. The Southeast Asian countries show a serious attitude to the development of renewable energy, but their intention to abandon coal still raises some doubts about the methods of implementing this ambitious plan. In particular, it is currently not entirely clear whether these countries are preparing to make a full-fledged "energy transition" in the coming decades, or whether they just intend to replace their coal-fired thermal power plants with gas ones.

Indian Contribution to Open Access: A Study of e-LIS

2019 ◽  
Vol 9 (2) ◽  
pp. 72-75
Author(s):  
Subhash Khode
Keyword(s):  
Open Access ◽  
Information Science ◽  
Journal Article ◽  
Library And Information Science ◽  
Asian Countries ◽  
Library And Information Studies ◽  
Information Studies ◽  
The World ◽  
Indian Contribution

The concept of open access has been increased in recent years around the world and India is also contributing in open access movement actively. e-LIS is an international open repository in the field of library and information science established in 2003 and as of today e-LIS contains 21,123 various types of documents. The basic aim of this study is to provide an analysis of Indian contribution towards open access movement, particularly the documents submitted in the e-LIS. This study provides analysis of 1090 various types of documents submitted to e-LIS (Eprint for Library and Information Science) from India as on 30 January, 2019. It found that the position of India in terms of number of documents submitted in the e-LIS is first among Asian countries. The maximum documents (432) are submitted as” Journal Article (Print and Online)” and maximum documents (72) are published in 2006.The maximum numbers of submitted articles (35) were published in “Annals of Library and Information Studies”.

scholarly journals Scopes and opportunities of buffalo farming in Bangladesh: A review

2017 ◽  
Vol 14 (2) ◽  
pp. 63-77 ◽  
Author(s):  
MA Hamid ◽  
MNA Siddiky ◽  
MA Rahman ◽  
KM Hossain
Keyword(s):  
Milk Production ◽  
South Asian ◽  
Coastal Region ◽  
Buffalo Milk ◽  
Meat Production ◽  
Subsistence Farming ◽  
Asian Countries ◽  
Production Potential ◽  
The World ◽  
Total Milk

The present study attempts to examine the scenario of buffalo production in Bangladesh. The buffalo plays a very important role in the South Asian region which constitutes 77.5% of world buffalo population. This region has a great biodiversity in buffalo germplasm, including the world famous source promising buffaloes Murrah and Nili-Ravi - renowned for high milk production potential. It is estimated that about 96.05 % of Asia and 93.19 % of world buffalo milk are produced in South Asian countries. Besides, buffalo milk in South Asian countries is around 54.95 % of the total milk production. The India and Pakistan share 67.99% and 23.96%, of world buffalo milk production respectively. About 71.4% of world buffalo meat is produced in South Asian countries. Although buffalo is an integral part of livestock production system in South Asian countries, it has never been addressed in Bangladesh and always neglected despite their important role in the national economy. In Bangladesh, the total buffalo population are 1.464 million heads that are managed in household subsistence farming as well as extensive free range (Bathan) farming in saline coastal region that are used as a draught animal and partially for milk and meat production. The contribution of buffalo in total milk and meat production in Bangladesh is only 2.0% and 0.94%, respectively. This review has tried to unearth the present scenario of buffalo production in Bangladesh, describing the benefits and values of buffalo milk and meat, advantages of buffalo husbandry over cattle, constraints in buffalo production and recommendations for buffalo development in Bangladesh.SAARC J. Agri., 14(2): 63-77 (2016)

scholarly journals Economic or Public Health? Southeast Asia’s Tackling of COVID-19 a Year Later

2021 ◽  
Author(s):  
Imas Arumsari ◽  
Ridhwan Fauzi ◽  
Mohammad Ainul Maruf ◽  
Mouhamad Bigwanto
Keyword(s):  
Public Health ◽  
Economic Loss ◽  
Southeast Asian ◽  
Asian Countries ◽  
The World ◽  
Country Rankings ◽  
Pandemic Response ◽  
Government Websites ◽  
One Year ◽  
Southeast Asian Countries

The world has been challenged by rapidly spreading COVID-19 outbreaks for a year now. Southeast Asian countries have had different strategies to deal with the pandemic. This review aimed to elaborate on Southeast Asian countries’ strategies in managing the trade-off between economic and public health, with further consideration of how such approaches were associated with the dynamics of the number of cases and the speed of economic recovery. This review evaluated the COVID-19 mitigation efforts spanning one year in the Southeast Asian (SEA) countries listed based on the Bloomberg COVID Resilience Ranking. As of May 24, 2021, three SEA countries (Thailand, Malaysia, and Indonesia) were chosen from the better (27th), moderate (35th), and worst (42nd) SEA country rankings. Peer-reviewed articles were obtained from Google Scholar and PubMed databases, and news articles were retrieved from GoogleNews. The data from government websites were also included. Sources were limited to those in the English and Indonesian languages that could be accessed between January 2020 and May 2021. Thailand, Malaysia, and Indonesia were found to have significantly prioritized consideration of the economy in handling the pandemic. Malaysia and Thailand had more stringent policies of imposing national lockdowns, while Indonesia had a partial lockdown. It was found that a weak pandemic response may result in substantial economic loss.

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