Sheet Web Spider Psechrus Clavis is known to utilize the coloration and web of its own body as visual cues to effectively capture and consume insects. Interestingly, it doesn’t immediately eat the male fireflies, referred to as Daifan Lampaloid; instead, these spiders retain them on the web, allowing the fireflies to continue emitting bioluminescent signals for up to an hour. This observation has raised intriguing questions among a research team from Tunghai University, the University of New South Wales, the Sydney Institute of Technology, and the National Museum of Natural Sciences in Taiwan.
Sheet web spider with fireflies caught in the web. Image credit: Tunghai University Spider.
Researcher I-Min TSO and colleagues at Tunghai University documented Psechrus Clavis retaining fireflies on the web while these insects continued to emit bioluminescent light for up to an hour.
They noted that the spiders periodically check for the captured fireflies.
Fascinated by this peculiar behavior, the researchers designed an experiment to see if it serves as a hunting strategy.
The experiment involved placing firefly-like LEDs on the actual sheet spider web, using other webs as controls.
The results indicated that the web with LEDs attracted three times as many prey compared to the control web.
This figure increased to ten times more prey when actual fireflies were visible.
The findings affirm that the presence of captured fireflies enhances the spider’s hunting success.
Researchers also discovered that the majority of captured fireflies are male and likely mistaken for potential mates.
“Our findings underscore the previously unrecognized interaction where Firefly Signals, intended for sexual communication, also benefit spiders,” remarked Dr. TSO.
“This study provides new insights into how sit-and-wait predators can adapt to attract prey, revealing the intricate complexities of predator-prey interactions.”
“This behavior may have evolved in sheet web spiders as a way to avoid the energy costs associated with producing their own bioluminescence, similar to anglerfish.”
“Instead, spiders can leverage the allure of their prey’s glow to attract their own targets.”
Video recordings taken during the experiments show sheet web spiders employing various tactics when interacting with different prey species.
The spider swiftly consumes a moth caught in the web but takes its time with the trapped fireflies.
“The varying treatment of prey suggests that spiders may use specific cues to differentiate between prey species and adjust their responses accordingly,” explained Dr. TSO.
“We hypothesize that the bioluminescent signals of fireflies help spiders to fine-tune their handling behavior towards different types of prey.”
This study was published in Journal of Animal Ecology.
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Ho Yin Yip et al. Visual seduction through bioluminescence of prey seduces waiting predators. Journal of Animal Ecology Published online on August 27th, 2025. doi:10.1111/1365-2656.70102
The technology sector is engaged in an intense competition to lure artificial intelligence experts with increasingly lucrative salaries and hefty signing bonuses. Researchers holding doctoral degrees in computer science are at the forefront of this battle, often dubbed “talent.” The Washington Post recently referred to them as Olympians in a headline that asks, “Why are AI superathletes commanding $100 million bonuses in Silicon Valley?” These individuals are the most sought-after professionals globally.
High-tech firms are investing heavily in AI team star players who can create technologies surpassing human capabilities. These innovations aim to yield AI models known as “artificial general intelligence” or “super intelligence,” which outperform human intellect in every task.
In the pursuit of these coveted advancements, Silicon Valley is pouring money that could potentially establish a legacy. The race for talent is so intense that stories about the poaching of individual researchers are making headlines, as seen in Wired: “Another well-known OpenAI researcher joins Meta,” and Bloomberg: “Meta recruits two prominent Apple AI experts after hiring their boss.” The Information also reported, “Humanity has hired two leading coding AI experts from the cursor developer Anysphere.” All these stories emerged just last week.
The tech press’s fixation on these researchers resembles the sports media’s coverage of star player trades. Analysis of their salaries, speculation about upcoming moves Meta’s roster, discussions about team composition or overall strategy, and scrutiny of individual players echo the basketball trade phenomena from the Dallas Mavericks to the Los Angeles Lakers.
The term “another” in the Wired headline hints that one company is driving this frenzy—Meta. Mark Zuckerberg has made headlines recently by stating his company would invest “hundreds of billions” in AI initiatives. In April, Meta adjusted its capital expenditure plans for this year from $640 billion to $75 billion, an increase from the previous estimate of between $600 billion and $65 billion. In 2023, Meta only allocated $28 billion for maintenance, as noted by Fortune.
Zuckerberg is backing his commitment with cash. In early July, Meta hired Ruoming Pang, the head of Apple’s AI modeling team, for a staggering pay package amounting to around $200 million. Pang is set to join Meta’s super intelligence team, which may be the most expensive engineering group since the Manhattan Project.
The current trade frenzy is encapsulated in Nvidia CEO Jensen Huang’s remarks about half of the world’s leading AI researchers last week. He made these comments while in Beijing, during a meeting celebrating Donald Trump’s recent allowance for Huang’s extremely profitable company and a new permit to sell advanced semiconductors to China. Previously, the export of Nvidia chips faced tight restrictions. Huang’s remarks highlight the fact that American companies are investing in a pool of English-speaking talent, which still stands out in competition across the Pacific, regardless of the substantial salaries offered by high-tech giants.
Alternatives to iPhones and Samsungs vie for your attention
Photo: Samuel Gibbs/The Guardian
In recent years, several companies have launched mobile phones aimed at providing alternatives to the industry’s biggest players. Some of these companies are capitalizing on a rising unease regarding smartphones’ grip on our daily lives or simply seeking to challenge the prevailing dominance.
One intriguing option is a recently released device in the UK by Sage Mobile. This iPhone 16 variant comes with customized software that prohibits internet searches, gaming downloads, and social media apps like Instagram. British technology editor Robert Booth notes that these bespoke phones are sold at over twice the price of standard UK iPhone contracts, targeting children with the promise of “reconnecting with real life.”
This device includes a curated app store, enabling users to access apps for banking, public transport, school calendars, and weather updates.
Based on experiences with similar devices in the US, usage among children aged 8 to 14 averaged just 15 minutes to an hour per day—significantly less than the average screen time of 3 hours. Kaspar remarked, “It’s not magic and isn’t that fun,” leading to disinterest among kids and resulting in many devices ending up in landfills.
A 16-year-old anonymous reviewer shared their experience with the Guardian, highlighting how using Sage underscored their dependency on various apps and social media platforms. Although they felt more productive and engaged with family, creating a clean division between online and offline life proved to be more complex than merely blocking apps.
Sage’s representatives mentioned that it can take about a month to adapt to these limitations. However, teens may feel isolated from their friends and society, which is perceived as unjust. Having TikTok and Instagram is the norm today, and stepping back from these platforms can make it challenging to stay connected.
Should I continue using this phone, I would likely feel excluded when discussing how many of our jokes and cultural references originate from those platforms.
The London-based company Nothing also aims for a different approach with its Phone 3. This device features a quirky design, including a small LED screen on the back of a translucent case, rather than being a stripped-down version of an iPhone or Android.
Constructed on a Nothing version of the Android operating system, the Phone 3 incorporates many interesting features while striving to differentiate itself from the ubiquitous offerings of Apple and Samsung. Consumer Technology editor Samuel Gibbs provided a four-star review, stressing the importance of its unique attributes for justifying its value.
While the Phone 3 is impressive for Nothing, it may not outperform standard Android devices. It stands out from competitors but requires a desire for something distinctive to appreciate its offerings, given that more affordable devices provide comparable or superior performance.
Photo: AP
In his commitment to invest hundreds of billions of dollars in AI, Zuckerberg disclosed plans for a data center comparable in size to Manhattan. Meta’s sprawling complex, fueled by similarly vast financial outlays, has been named Hyperion, after the Greek Titan symbolizing the sun. Zuckerberg’s second smaller data center is named Prometheus, after the Titan punished for bringing fire and sacred knowledge to humanity. Is this data center a boon for us? Or, as the creators of AI, are we destined to face consequences? The emotions evoked by these names reflect Zuckerberg’s grand ambitions. The famous novel Frankenstein has another notable title that seems relevant: Modern Prometheus.
Google is also expanding its undertakings, planning to invest $3 billion in hydropower and $25 billion in data centers across Pennsylvania and neighboring states within the next two years. Apple is making its mark with a $500 million deal for rare earth minerals, investments that have drawn scrutiny from US mining companies.
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