Latest news with #chemicalwarfare
Yahoo
17 hours ago
- Science
- Yahoo
Spider With No Venom Has a Deadly Trick to Poison Its Prey
In an unexpected twist, a non-venomous spider has been caught poisoning its victims by lacing its silk wrappings with vomited toxins. The feather-legged lace weaver (Uloborus plumipes), common across Europe and Africa, lacks venom glands on its head, so it was thought to be harmless. But biologists suspected this arachnid uses a different method of chemical warfare. University of Lausanne ecologist Xiaojing Peng and colleagues have now discovered that lace weavers regurgitate toxins from their midgut onto their silk-wrapped prey to subdue them. While the gut-toxin compounds are different from those found in the fangs of venomous spiders, they appear to be just as effective at disabling prey. Related: "These samples proved highly insecticidal, killing an average of 50 percent of fruit flies within an hour of inoculation," says ecologist Giulia Zancolli, also from the University of Lausanne. The researchers found these toxic proteins were similar to those in the digestive fluids of other spiders, like Parasteatoda tepidariorum, despite this species having venom glands as well. "These findings demonstrate that spider toxins are not exclusively confined to specialized venom-secreting glands but also play a role in the digestive system," explain Peng and team in their paper. "This supports an evolutionary link between the two systems, suggesting that toxins may have initially served digestive functions before being co-opted for venom use." Unlike their venomous counterparts, U. plumipes lack ducts in their fangs for injecting anything, the researchers confirmed. They suspect the lace weaver lost its venom over time, but then compensated by shifting to using its digestive toxins. While spiders are often feared for their venomous ways, they play a crucial role in our ecosystems, keeping insect numbers at bay while providing food for many birds, reptiles, and other animals, even humans, some while looking quite spectacular, too. Their venoms have also shown promise for potential medical uses, so it might be worth investigating the properties of their gut toxins as well. This research has been published in BMC Biology. Dolphins Got Giant Testicles. We Got a Chin. Only One Makes Sense. 4-Billion-Year-Old Stripey Rocks in Canada May Be The Oldest on Earth Scientific First: Mice With Two Fathers Now Have Offspring
Associated Press
14-06-2025
- Politics
- Associated Press
Global Times: Japanese civil group urges Tokyo to 'face history' through exhibitions of Japanese chemical warfare in WWII
06/14/2025, Beijing, China // KISS PR Brand Story PressWire // A Japanese civil group recently held an exhibition in Yokohama, Japan which focused on the Japanese Imperial Army's use of chemical weapons and the dangers posed by abandoned chemical munitions during the Chinese People's War of Resistance Against Japanese Aggression, in a bid to bring these 'dormant historical materials' to light. Nobuharu Goi, chairman of the Yokohama Committee for the Exhibition on Japanese Army's Chemical Warfare, told the Global Times in an exclusive interview that the Japanese government is attempting to erase the public's memory of the war. His organization has spent years collecting materials related to the chemical warfare conducted by the Japanese Imperial Army during its invasion of China, and has held 10 such exhibitions across Japan on the country's 'wartime perpetration' - including the Nanjing Massacre, 'comfort women,' Unit 731, chemical warfare, and the Battle of Okinawa. We hope that the exhibition will encourage more people to understand the crimes committed by the Japanese military in China and urge the Japanese government to confront history, Goi said. This year marks the 80th anniversary of the victory of the Chinese People's War of Resistance Against Japanese Aggression and the World Anti-Fascist War. The exhibition was held from May 2 to 6. Approximately 120 exhibits, including historical photographs, thematic panels, and documentary materials, reveal the truth about the Japanese Imperial Army's development, production, and large-scale use of biochemical weapons in China and other places, as well as the suffering inflicted on victims due to the weapons being abandoned after Japan's defeat. Discussing the motivation behind the exhibition, 68-year-old Goi explained to the Global Times that Japan signed the 'Protocol for the Prohibition of the Use of Asphyxiating, Poisonous or Other Gases and of Bacteriological Methods of Warfare' (the Geneva Protocol) in 1925, yet continued to manufacture and use chemical weapons during the war. His organization believes it is essential to make these 'dormant historical materials' public. Notably, the promotional poster for the exhibition featured the phrase: 'This year marks the 80th anniversary of the end of the war. Shouldn't we reflect on what Japan did in China?' However, these historical facts are either barely mentioned or completely omitted in contemporary Japanese textbooks, as the government attempts to gradually erase the public's memory of the war, Goi said. After visiting the exhibition, some Japanese netizens shared their thoughts on social media platforms, expressing the importance of conveying the truth of historical events to future generations. Also as a member of a Japanese civil society group 'Kanagawa Association for Promoting Memory Inheritance', Goi said they plan to hold similar exhibitions in Yokohama in August and in Tokyo in December. We hope exhibitions like this will help more people understand the crimes committed by the Japanese Imperial Army in China, deeply reflect on the suffering caused by war, and urge the Japanese government to confront history to avoid repeating past mistakes, Goi said. According to Goi, the Japanese civil society group holds annual exhibitions on relevant themes. Before each exhibition, there are concerns about potential disruptions from right-wing extremists, but fortunately, this time in Yokohama there were no incidents. He noted that most visitors reported gaining insights into topics that are rarely mentioned or completely absent in Japanese textbooks, recognizing the crimes committed by Japan during the war and finding the exhibition both rewarding and meaningful. When commenting that Japan has significantly increased its defense budget with the intention of 'expanding its military' in recent years, Goi expressed his opposition to Japan's military buildup, stating that Article 9 of the Japanese Constitution mandates that Japan renounces war and the use of force as a means of settling international disputes. He asserted, 'I believe Japan should adhere to Article 9 of the Constitution and apologize for the crimes committed during the war.' Regarding future China-Japan relations, Goi said that Japan must adhere to the principles of the four political documents between China and Japan, which serve as the foundation for developing relations between the two countries.
