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HKU students publish field guide on poisonous plants in Hong Kong
Students from the HKUSU Ecology & Biodiversity Society recently published a guide book named “Poisonous Plant Field Trip: Field Guide”, originally intended for their Poisonous Plant Field Trip held in June to teach participants on identifying poisonous plants in Hong Kong. The printed version of this field guide were only given to the participants of the field trip and the eVersion is now also available online to the public.
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Conservation Forensics Helping to Fight Illegal Wildlife Trafficking
Illegal wildlife trafficking is the fourth most lucrative criminal trade in the world and is estimated to generate up to US$20 billion in illicit revenue a year. Millions of animals and plants are traded every year threatening the survival of many endangered species. With more species on the brink of extinction, illegal profits surging and with no sign that the trade is slowing down, HKU School of Biological Sciences has adopted conservation forensics to provide authorities investigating illegal wildlife trafficking with accurate scientific data to use against traffickers. Watch the full video.
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HKU and Mainland scientists develop a scientific model for estimating site-specific metal toxicities in marine environments
A research team led jointly by Professor Kenneth Leung Mei-yee, Deputy Director of the HKU School of Biological Sciences, and Professor Wu Fengchang, Director of State Key Laboratory of Environmental Criteria and Risk Assessment at Chinese Research Academy of Environmental Sciences (CRAES), developed a novel empirical model for predicting metal toxicities and deriving their water quality criteria (WQC) in different marine environments worldwide. The novel method developed by the team will greatly improve the management of metal and metalloids in coastal marine environments worldwide, as environmental authorities can employ this method to derive provisional site-specific WQC for facilitating better ecosystem protection with consideration of specific environmental conditions and potential influences of global climate change.
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HKU launches food app to help consumers make healthier choices in supermarkets
The HKU school of biological sciences and the George Institute for Global Health in Australia jointly developed an app called FoodSwitch HK to help consumers choose healthier food and drinks in the supermarket simply by scanning the barcode of a product. The app highlights the fat, salt, sugar and energy content of the product through a colour coded system and uses a star rating system to indicate the overall nutritious value. It also offers up a healthier alternative when available. The database contains nutrition information of 13,000 pre-packaged products in local supermarkets. Dr Jimmy Louie Chun-yu, assistant professor of food and nutritional science at HKU and a registered dietitian, said based on several studies, Hongkongers eat up to 10 grams of salt a day, twice the World Health Organisation's recommended daily intake. He hopes the new app can help consumers to make healthier choices.
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HKU medical chemists discover peptic ulcer treatment metallodrug effective in “taming” superbugs
A research team led by Professor Sun Hongzhe of the Department of Chemistry, Faculty of Science and Dr Richard Kao Yi-Tsun of the Department of Microbiology, Li Ka Shing Faculty of Medicine, discovered an alternative strategy by repositioning colloidal bismuth subcitrate (CBS), an antimicrobial drug against Helicobacter pylori (H. pylori) -related ulcer. The team revealed a bismuth-based antimicrobial drug for treating peptic ulcers can effectively paralyze multi-resistant superbugs, e.g. Carbapenem-resistant Enterobacteriaceae (CRE) and Carbapenem-resistant Klebsiella pneumoniae (CRKP), and significantly suppress the development of antibiotic resistance, allowing the lifespan of currently-used antibiotic to be largely extended. Director of the HKU Centre for Infection Dr Ho Pak Leung said CBS can disarm superbugs reducing them to almost sensitive strain which can be easily killed by commonly used Carbapenem antibiotics and is having a good potential for future clinical applications. A patent has been filed in the US for the discovery.
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HKU marine biologist collaborative study revealed overfishing and illegal trade of live reef fish
Figures from the UN's Food and Agriculture Organisation showed Hong Kong had the second-largest per capita consumption of seafood in Asia at 60kg, three times the world average. The report, Going, Going Gone: The Trade in Live Reef Food Fish, jointly published by the HKU Swire Institute of Marine Sciences, ADM Capital Foundation and the WWF Coral Triangle Program revealed that between 20,000 and 30,000 metric tonnes of live reef fish were traded legally in Hong Kong each year, with a value more than US$1 billion. The volume of imports could be underestimated by 50% in account of illegal trade from inadequacies in the monitoring protocols and the culture of deliberate misreporting in the industry. The report’s lead author Professor Yvonne Sadovy, of the School of Biological Sciences, said it is critical for Hong Kong to take steps to regulate before it is too late, or popular wild-caught reef fish could be gone in the next couple of decades. The team urged the government to update laws on the importation of live fish and the seafood trade, and called on consumers to choose sustainable seafood.
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HKU biologist collaborative research offers solution to low oxygen in ocean
An international team of scientists from the Global Ocean Oxygen Network, an expert group of the United Nation’s Intergovernmental Oceanographic Commission, released findings of a research paper published in Science which investigated the causes, consequences and solutions to low oxygen worldwide, in both the open ocean and coastal waters. It was revealed that the amount of water in the open ocean with zero oxygen has gone up more than fourfold in the past 50 years. The scientists said to halt the decline, the world needs to rein in both climate change and nutrient pollution. HKU marine biologist Dr Moriaki Yasuhara, a co-author of the paper, said the Asian coast including Hong Kong is one of the most seriously suffered. The scientists urged the world to take on the issue to address the causes: nutrient pollution and climate change, protect vulnerable marine life, and improve low-oxygen tracking worldwide.
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