
Not just humans, even ants follow caste. It defines their destiny
Using the clonal raider ant, Ooceraea biroi, which allows precise control of genetics and rearing conditions, the team found that size and caste are inextricably linked—but not by environment alone.
The destiny is an interplay between genes, body size, environment. (Photo: Pixabay)
Queens aren't just large workers; they possess wings, large ovaries, and special eyes, while workers lack these features. By manipulating food, temperature, and caregiver genotypes, the team found that these environmental factors influenced caste only by altering the ants' final body size, smaller ants remained workers, while those that grew big enough developed queen-like features.But intriguing differences emerged when the team studied ants from different genetic lines under identical conditions. Some genetic lines produced ants that, even at small sizes, were more likely to develop queen-like traits."Genes don't just influence how big an ant grows," says Patrick Piekarski, co-author and postdoctoral researcher in Kronauer's lab, "they also set the body size threshold at which queen features appear."In other words, two ants of the same size but different genetics can have drastically different chances of becoming queens.
Researchers set out to untangle whether environment or genetics is more important. (Photo: Getty)
While environmental factors, like access to food, can increase or decrease overall size, only genetics determine how size translates to caste. The findings highlight that ant societies have evolved a robust, genetically controlled system for dividing roles, with genes both shaping growth and defining what that growth means to the colony.Understanding the links between genes, size, and social roles isn't just about morphology, it's a window into the evolutionary logic behind insect societies and the roles individuals play within them.- EndsTrending Reel

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


Hindustan Times
10 hours ago
- Hindustan Times
New study reveals the date the universe will die. It's sooner than you think
Amid multiple theories about the future of our universe, new data have surprised scientists, suggesting that the universe might stop expanding and ultimately collapse sooner than expected. During the past year, the study of various galaxies by the Dark Energy Survey (DES), as well as the Dark Energy Spectroscopic Instrument (DESI), has unveiled data that made cosmologists suggest that the universe might collapse in a 'Big Crunch,' reported. Universe to die in 33 billion years? DES and DESI unveiled data which suggest that the universe might collapse in a Big Crunch(Representative Image/ Pixabay) {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} DES and DESI data reveal that the phenomenon, named dark energy, the force which accelerates the expansion of the universe, could be changing with time. This observation could result in a paradigm shift, meaning that the cosmological constant - the model of dark energy - could be flawed. {{^usCountry}} {{/usCountry}} The latest data has offered room for exploring radical new theories of the cosmos. A new study, which was presented in a paper in June and awaits peer review, has proposed a complex model for dark energy. Also Read: Violent Collision of Two Black Holes Rippled Across the Universe What does new study say about universe? {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} {{^usCountry}} It suggests that two components contribute to dark energy, including the axion and cosmological constant. Axion: According to this hypothetical ultralight particle rarely interacts with matter. Such particles hold the ability to soak the entire universe. {{/usCountry}} {{#usCountry}} It suggests that two components contribute to dark energy, including the axion and cosmological constant. Axion: According to this hypothetical ultralight particle rarely interacts with matter. Such particles hold the ability to soak the entire universe. {{/usCountry}} Read More {{^usCountry}} Cosmological constant: It is a bare number mentioned in Einstein's theory of general relativity. The latest analysis notes that cosmological constant holds lower value, since part of the accelerated expansion could be attributed to axions. {{/usCountry}} {{#usCountry}} Cosmological constant: It is a bare number mentioned in Einstein's theory of general relativity. The latest analysis notes that cosmological constant holds lower value, since part of the accelerated expansion could be attributed to axions. {{/usCountry}} {{^usCountry}} The researchers involved in the study believe that a proper way to fit the DES and DESI data was to get axions working out with a negative cosmological constant. According to them, this suggests that we are living in a temporary period of accelerated expansion, which is heavily driven by the axion field. {{/usCountry}} {{#usCountry}} The researchers involved in the study believe that a proper way to fit the DES and DESI data was to get axions working out with a negative cosmological constant. According to them, this suggests that we are living in a temporary period of accelerated expansion, which is heavily driven by the axion field. {{/usCountry}} {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} With time, axions will go on to dilute and lose steam. Later on, it will pave the way for the negative cosmological constant to take over, the study claims. Also Read: 'Dark universe detective' telescope releases first data. See pics The negative cosmological constant performs the opposite of a positive one and goes on to decelerate the expansion rate of our universe. This means, the cosmos expansion might slow down in future and start to reverse, resulting in a new "Big Crunch" phase. In the end process, the galaxies would merge with each other, while our universe might become smaller, hotter and denser, read the study. {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} As per the predictions, the beginning of the end could be in about 10 billion years, which is too less compared with the present age of the universe. Another 10 billion years would be required for the cosmos to collapse. Ultimately, the universe could reach the final singularity state after more than 33 billion years of its total lifetime. FAQs: 1. What do astronomers calculate? In the latest study, they have studied new data from the Dark Energy Survey and the Dark Energy Spectroscopic Instrument. 2. What math do astronomers use? Astronomers take into consideration a wide range of mathematical concepts, such as algebra, calculus, probability and others. 3. What math is used by astronomers to measure distances in space? This is done through the cosmic distance ladder. {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} {{^userSubscribed}} {{^usCountry}} {{/usCountry}} {{#usCountry}} {{/usCountry}} {{/userSubscribed}} trends united states See Less SHARE THIS ARTICLE ON
&w=3840&q=100)

First Post
2 days ago
- First Post
How a baby girl in Sweden grew a ‘micropenis' from lying on her father's chest
A 10-month-old baby girl in Sweden developed a 'micropenis' after she frequently lay on her father's bare chest, who applied a strong testosterone gel as part of a hormonal treatment. The baby soon began to show unexpected physical changes, which triggered panic among the parents. Here's what we know read more The 10-month-old baby girl in Sweden would often lie on her father's bare chest, a common skin-to-skin practice known to support early development and strengthen the parent-child connection. AI-generated representative image As bizarre as it sounds, a 10-month-old baby girl in Sweden started developing a 'micro-penis', all because she often lay on her father's bare chest, who had applied testosterone gel. And this isn't an isolated case. A Swedish doctor now says she's seen many similar cases, where young children showed unexpected physical changes after being exposed to hormone creams used by adults around them. Here's what happened, and what you should know to keep your child safe. How a baby girl developed a 'micropenis' In what started as a loving bonding routine, a 10-month-old baby girl in Sweden would often lie on her father's bare chest, a common skin-to-skin practice known to support early development and strengthen the parent-child connection. But what her parents didn't know was that her father had been regularly applying testosterone gel on his chest, a treatment typically prescribed to men with low testosterone levels. STORY CONTINUES BELOW THIS AD Without realising the risks, this repeated skin contact exposed the infant to high levels of the hormone, leading to unexpected and alarming changes in her genitalia. Over time, her parents noticed that her clitoris had begun to elongate, taking on a penis-like shape, while her labia started to fuse together, resembling a small scrotum. These changes were described as resembling a 'micropenis', which is usually reserved for underdeveloped male genitalia. Panicked, the family sought medical help. Blood tests quickly pointed to the cause. Secondary exposure to testosterone gel in children can trigger adverse effects such as premature puberty. Image for Representation. Pixabay 'I don't think people always understand how potent these treatments are,' said Professor Jovanna Dahlgren, a paediatric endocrinologist at Sahlgrenska University Hospital, speaking to local media channel Göteborgs-Posten. 'The parents become completely desperate when they understand what has happened,' she added. This particular case happened eight years ago, but it's far from isolated. Professor Dahlgren said she's treated at least half a dozen similar cases, all involving hormone creams or gels unintentionally transferred to children through skin contact with a parent. STORY CONTINUES BELOW THIS AD In another incident, she said, a 10-year-old boy developed breast tissue after unknowingly coming into contact with his mother's estrogen cream. Fortunately, in the Swedish girl's case, her symptoms began to reverse once her father stopped using the gel and skin-to-skin contact was avoided. How hormone creams can harm kids Doctors have been raising concerns after seeing multiple cases of children affected by accidental exposure to hormone creams, a danger many parents simply aren't aware of. These creams and gels are commonly prescribed to men with hypogonadism, a condition where the body doesn't produce enough sex hormones. While hypogonadism can affect men at any age, research suggests it becomes more common with age, impacting around 40 per cent of men over 45 and nearly half of those in their 80s. Testosterone replacement therapy (TRT) is often used to help with symptoms like low libido, erectile dysfunction, fatigue, mood changes, and muscle loss. These creams and gels are commonly prescribed to men with hypogonadism, a condition where the body doesn't produce enough sex hormones. Image for Representation. Pixabay However, problems arise when the gel isn't handled properly. If adults don't wash their hands, allow the gel to dry fully, or cover the application site, and then come into close contact with children, the hormone can be absorbed through the child's skin. Even small amounts can cause physical changes, including signs of early puberty or virilisation. STORY CONTINUES BELOW THIS AD Experts strongly advise users to apply the gel only to specified areas like the shoulders, upper arms, or abdomen, let it air-dry completely before getting dressed, wash hands thoroughly afterwards, and keep the area covered. Most importantly, health officials stress that skin-to-skin contact with children, especially babies, should be strictly avoided for several hours after applying the medication. With input from agencies


The Hindu
2 days ago
- The Hindu
Bacterial cell walls could hold clues to better human health, say CCMB scientists
Bacteria are enclosed by protective cell walls, made from a unique substance called peptidoglycan. This material is absent in other life forms, including humans, which is why many antibiotics target it. A team of scientists led by Manjula Reddy at CSIR-Centre for Cellular and Molecular Biology (CCMB), Hyderabad, has found that bacteria sometimes make mistakes while building this wall. Instead of using the correct amino acid L-alanine, they occasionally use a structurally similar one called glycine. This weakens the wall and makes bacteria more vulnerable to antibiotics. These findings have been published in the PNAS journal. Also Read | CCMB team uses E. coli to study bacterial cell wall development The bacterial cell wall is made of sugars and short chains of amino acids. Dr. Reddy's team discovered that bacteria have a special enzyme called PgeF (Peptidoglycan Editing Factor) to maintain the composition of the cell using a combination of genetics and high-resolution mass-spectrometry, according to the study's first author, Shambhavi Garde. Interestingly, a similar enzyme exists in humans. Called LACC1, it has been linked to several autoinflammatory diseases — conditions where the immune system is hyperactived, said Though LACC1's role isn't fully understood, this study suggests it might be involved in how the body responds to bacterial infections. 'By studying such vulnerabilities in cell wall synthesis, new ways of blocking bacterial growth can be designed,' the scientists said in a press release.