글

Uncovering the Combined Toxicity of Abamectin and Lambda-cyhalothrin on Honey Bees

이미지
  Uncovering the Combined Toxicity of Abamectin and Lambda-cyhalothrin on Honey Bees Highlights: Abamectin demonstrates higher toxicity to honey bees compared to lambda-cyhalothrin. The combined toxic effect of abamectin and lambda-cyhalothrin on honey bees is antagonistic. Exposure to mixed pesticides disrupts the balance of gut microbiota in Apis mellifera. Transcriptomic analysis reveals significant regulation of genes associated with metabolism and immunity. Pesticides disturb immunity and detoxification enzyme levels and gene expressions. Abstract: Research on the toxic effects of pesticides on bees has primarily focused on individual toxicity assessments, leaving a gap in understanding mixed toxicity. This study explores the individual and combined toxic effects of abamectin (ABA) and lambda-cyhalothrin (LCY) on honey bees (Apis mellifera). ABA exhibits greater acute toxicity to honey bees compared to LCY, and their mixture presents an acute antagonistic effect. Exposure to LCY a
자세한 내용 보기

Abnormal Climate Causes Sharp Rise in Watermelon Prices

이미지
  Abnormal Climate Causes Sharp Rise in Watermelon Prices Overview: Recent abnormal weather patterns, including excessive rainfall and sudden temperature drops, have significantly reduced the yield of watermelons in South Korea. This reduction in production has led to a surge in watermelon prices, exacerbating concerns about climate-related inflation. Impact on Prices: According to the Korea Agro-Fisheries & Food Trade Corporation, the average retail price of watermelons has increased by 17% compared to the previous year, reaching 23,103 won per unit. Moreover, the sale price has soared by 26% year-on-year, averaging at 25,303 won per bottle. Climate-Induced Yield Reduction: The abnormal climate has disrupted the growth environment for watermelons, causing instability due to insufficient sunlight and unexpected low temperatures. As a result, the yield has decreased significantly, impacting both production units and shipping rates. Forecasted Shipments: The "May issue of ag
자세한 내용 보기

Unusual May Snowfall Hits Northern Gangwon Province

이미지
  Unusual May Snowfall Hits Northern Gangwon Province Overview: Since May 15th, northern Gangwon Province in South Korea has been experiencing heavy snowfall, an unusual occurrence for this time of year. The unexpected snowfall, following earlier heavy rain, has caused damage to farms in the region. Extent of Snowfall: According to the Korea Meteorological Administration (KMA), significant snow accumulation, exceeding 10cm, has been reported in mountainous areas of Gangwon Province, particularly those over 1,000m above sea level. Notably, Seoraksan Mountain recorded up to 40cm of snow at the Socheong shelter. Historical Context: This mid-May heavy snowfall marks the first time since 1999 that a heavy snow warning has been issued for the region during this period. Cold air from Siberia colliding with moist air from the south has led to the formation of snowfall. Meteorological Explanation: The recent heavy snowfall is attributed to the convergence of cold air from Siberia and moistu
자세한 내용 보기

Bumblebee Populations Threatened by Nests Overheating Due to Climate Change

이미지
  Bumblebee Populations Threatened by Nests Overheating Due to Climate Change Understanding the Impact of Climate Change on Bumblebee Populations Bumblebees play a crucial role as pollinators in ecosystems worldwide, yet many species are facing alarming declines. A recent study sheds light on a potential culprit: overheating of bumblebee nests, driven by rising temperatures due to human-induced climate change. The Threat of Nest Overheating Lead author Dr. Peter Kevan, from the University of Guelph, Canada, highlights the detrimental effects of overheating on bumblebee nests and their brood. Excessive temperatures, particularly above 35 degrees Celsius, pose a significant risk to the survival of bumblebee colonies, despite their remarkable ability to regulate internal temperatures. Optimal Temperature Range Research findings indicate that the optimal temperature range for bumblebee nests falls between 28 to 32 degrees Celsius. However, rising global temperatures due to climate change a
자세한 내용 보기

Ancient Trees Reveal Last Summer as Hottest in 2,000 Years

이미지
  Ancient Trees Reveal Last Summer as Hottest in 2,000 Years Unlocking Climate Secrets with Ancient Trees Deep within the trunks of ancient trees lies a hidden record of Earth's climate history. Recent findings reveal that last summer marked the northern hemisphere's hottest period in 2,000 years, as recorded by tree rings—a testament to the unprecedented impact of climate change. Tree Rings: Nature's Time Capsules Tree rings serve as natural archives of climate data, offering insights into temperature variations over millennia. By examining the width of tree rings, scientists can reconstruct past climates with remarkable precision, providing invaluable information about historical temperature patterns. Unprecedented Warmth Analysis of tree ring samples from living specimens and fossils across the northern hemisphere revealed that temperatures during June, July, and August of 2023 were nearly 4°C warmer than those during the coldest summer recorded two millennia ago. This s
자세한 내용 보기