Articles tagged with Insect Physiology
Researchers discovered that tobacco hawkmoth wings have specialized hair-like structures that can detect specific aromas. The wings contain sensory receptors that can pick out unpleasant amine odours, guiding the moths to their favorite plants for laying eggs.
Deep-diving insect larvae have developed sturdy air sacs that control their buoyancy, defying the idea of oceanic insect extinction. Their unique respiratory system uses resilin to adjust air sac volume and pH, allowing them to thrive in extreme depths.
A new study found that honey bee larvae lack the sophisticated olfactory capabilities of adult honey bees. Adult bees have a suite of chemosensory receptors, including olfactory receptors and ionotropic receptors, essential for detecting odors from potential sources of pollen and nectar.
Research on burying beetles found that heat stress leads to an increase in same-sex mounting, contradicting initial assumptions. The study suggests a possible trade-off between heat-protection and social communication cuticular hydrocarbons may be involved.
Researchers reconstructed millipede evolution history, tracing origins to nearly 460 million years ago. They also discovered that one group of millipedes may have developed chemical defenses 260 million years ago.
Honeybee queens are created through an elaborate process involving young worker bees constructing customized wax chambers with unique physical and chemical properties. Researchers identified a previously unrecognized class of young worker bees dubbed 'queen cell builders' that appear uniquely adapted for the task.
Termites became the backbone of tropical ecosystems after two diversification pulses following global extinctions. The traits that define modern termites, such as soil-eating and fungus agriculture, emerged in distinct pulses about 30 million years apart, according to a new study published in Current Biology.
Climate change is altering insect emergence timing worldwide, impacting their ability to find food and survive. A study found that insects from cooler regions are particularly vulnerable to warm springs, losing energy quickly and facing poorer starting conditions.
A new study from UC Riverside shows that a locally adapted population of SoCal honeybees can naturally suppress deadly mites. The hybrid bees are less susceptible to Varroa mite infestations and cross-thresholds, making them more resistant than commercial breeds.
Researchers found that changes in animal development due to climate shock persist even after three generations, leading to increased stress and adaptation. The study suggests that climate change can accelerate evolution by affecting gene expression and development time.
A new study from Michigan State University finds that isolated honey bees experience a rapid hormonal rise when exposed to high temperatures, while those in groups remain stable. The discovery highlights the role of social conditions and chemical signals in shaping bees' ability to withstand environmental stress.
Researchers found that mosquitoes' rectal cells interact with their nervous system, influencing appetite and behavior. The study suggests the gut plays a key role in regulating behavior across species, with implications for understanding mosquito feeding habits and potential treatments.
Researchers at Binghamton University found a significant shift in moth flight patterns over a century, with some species emerging later in the year. The study also identified missing moth species in the region, highlighting the impact of anthropogenic change on ecosystems.
A tropical insect has been found to change color from hot pink to green within a fortnight, resembling the young leaves of rainforest plants. This remarkable adaptation allows the insect to blend in with its surroundings, suggesting a finely tuned survival strategy.
A University of California - Riverside study has identified bed bugs' fear of water and wet surfaces, which affects their behavior and movement patterns. Researchers found that all bed bug ages and genders avoid wet surfaces, with younger insects being more sensitive to moisture.
Researchers have discovered that the Japanese scarab beetle uses mirror-image pheromones to distinguish between potential mates. The discovery could lead to improved monitoring and control methods for this invasive species.
Researchers found a smooth variation in sensitivity to diapause induction with air temperature and daylight length, suggesting genes regulating circadian rhythm play a key role. The timeless gene was associated with variations in female diapause sensitivity, providing insights into molecular mechanisms behind diapause.
Researchers have developed a new test that uses microbes to determine the age of termite droppings, allowing for rapid on-site infestation assessments. The study found that the amount of DNA from E. coli bacteria in the pellets decreases significantly over time, with a nearly 190-fold drop by the 12-month mark.
Biologists have discovered that shiny colours serve as signals for pollinators and mates, but compromise colour perception at close range. This study found that dynamic, shiny colours are more conspicuous from afar, but harder to discern in detail.
A new study reveals that fruit flies have retinal waves of calcium activity during development, shaping their growing eyes and creating a precisely ordered architecture. These waves refine connections in the visual brain while also playing a key role in building the physical architecture of the eye.
Researchers have discovered a key role for the Frazzled protein in fruit fly neural circuits, revealing how it helps neurons form reliable connections. The study showed that when Frazzled is missing or mutated, neurons fail to form proper electrical connections, leading to communication breakdowns.
Researchers at the University of Tsukuba identified a peptide hormone called Capa that regulates calcium levels in fruit flies. The study found that Capa is secreted by specific neurons and acts on organs similar to vertebrate kidneys to mobilize calcium from stored reserves.
Researchers at North Carolina State University found a strong link between cockroach infestations and high levels of allergens and endotoxins in homes. Eliminating cockroaches significantly reduced these health risks, with most infested homes without extermination showing large amounts of both allergens and endotoxins.
Researchers identified Phaedra1 as a gene essential for stress-induced cell death in Drosophila melanogaster. The mTOR-Zeste-Phae1 pathway controls lethal stress-dependent individual death. Suppressing this pathway increases survival rates after exposure to lethal stress.
A research team has discovered that bees' complex eyes contain specialized facets that detect polarized light in the sky, producing a less-detailed but more accurate image. This allows bees to tune out unimportant information and focus on the big picture, using the sun's position as a compass.
Research reveals that day-flying moths have larger hearing organs than their night-flying counterparts despite facing less threat from echolocating bats. This counterintuitive finding suggests a possible new function for tympanal organs in detecting lower-frequency sounds produced by birds or reptiles.
Scientists at the University of Leicester discovered that jewel wasps can slow down their biological rate of ageing by undergoing a natural 'time-out' as larvae. This pause in development extends lifespan and decelerates the epigenetic clock, tracking chemical changes in DNA.
Researchers discovered complex structures in millipede secretions that can modulate specific neuroreceptors in ant brains, shedding light on potential new medications. The newly found alkaloids, named andrognathanols and andrognathines, have shown potent interactions with the Sigma-1 neuroreceptor.
Researchers have discovered a way for caterpillars to metabolically degrade plastics in a matter of days, storing it as body fat. However, this process comes at a cost, ultimately leading to the caterpillar's death.
A new study compares the genome sequence of bed bugs that live with humans and those that don't, finding that human-associated bed bugs recovered and increased in population size over time. The research suggests that humans may have inadvertently led to the emergence of modern bed bug pests.
Researchers have discovered a chemical called bistrifluron that prevents drywood termites from creating new exoskeletons, ultimately killing the colony. This innovative method offers a safer alternative to traditional fumigation methods and has shown promise in reducing toxicity.
Researchers at University of Tsukuba discovered 'pirate parasitism' where parasitoid wasps lay eggs in unsuitable hosts, leading to successful parasitism. The phenomenon occurs when one parasitoid wasp takes advantage of a host's already suppressed immune system due to another parasitoid wasp.
Scientists developed a nutritionally complete feed to sustain honey bee colonies, containing all necessary nutrients. The new food source thrived in field trials, reducing colony mortality and increasing survival rates.
A new study reveals that the presence of Nora virus in laboratory strains of Drosophila fruit flies can increase their sensitivity to bacterial infection and limit their lifespan. Flies with persistent viral infections have higher stem cell growth rates, making them more susceptible to secondary pathogenic infections.
Researchers found that individual honeybee dance styles, rather than consistency, contribute to successful food foraging. Bees with diverse communication methods were more likely to recruit others who successfully found food.
Researchers found that desert ants rely on the polarity of the geomagnetic field to navigate during learning walks, contradicting previous findings in other insects. The team manipulated magnetic fields and observed the ants' behavior, concluding that a compass-like navigation system is useful for short-distance navigation.
Researchers at the University of Washington have uncovered surprising details about mosquito mating, revealing that males can visually lock on to female targets in a crowded swarm. The team's findings could lead to the development of new mosquito traps specific to malaria-carrying species.
Researchers at the University of California - Riverside have discovered a highly effective and nontoxic way to kill western drywood termites using a pleasant-smelling chemical called pinene. The method involves releasing the scent of pinene, which attracts termites and guides them to a spot where insecticide is injected into wood.
Researchers found that honey bees can fly in temperatures ranging from 77 to 104 degrees Fahrenheit without overheating, by lowering their wingbeat frequency and increasing stroke amplitude. This adaptation helps the bees conserve water and improve their heat tolerance.
A University of Washington team discovered that nitrate radicals in the air degrade scent chemicals released by wildflowers, making them undetectable to nighttime pollinators. The researchers found that pollution likely has worldwide impacts on pollination, with areas including western North America and Europe most affected.
Researchers examined venom genes in bees and other hymenopteran taxa using comparative genomics. They found that 12 'families' of peptides and proteins were present in all analyzed hymenopterans, indicating a common ancestor possessed these genes. This suggests that Hymenoptera insects are venomous as an entire group.
Two closely related butterfly species have evolved distinct adaptations to cope with changing seasons. The small white butterfly is a 'summer specialist,' reproducing well but struggling in winter, while the green-veined white butterfly is a 'winter specialist,' thriving in cold conditions.
A study by Shinji Sugiura and Masakazu Hayashi found that bombardier beetles are better defended against pond frogs than assassin bugs. The researchers also showed that both insects benefit from mimetic interactions with the shared predator.
In a breakthrough study, researchers discovered that the neuropeptide DH31 regulates reproductive dormancy in insects, controlling juvenile hormone production. This finding could lead to the development of new technologies to control agricultural pests and infectious disease vectors.
Researchers have shed light on the molecular mechanisms allowing beetles to absorb water rectally, a property enabling them to survive in extremely dry environments. This knowledge could be used to develop more targeted and eco-friendly methods to combat beetle species that destroy food production.
Researchers have developed a new synthetic skin, made of hydrogels, to study how mosquitoes transmit deadly diseases. The hydrogel system can mimic different blood vessel patterns, allowing for more consistent testing and analysis. This breakthrough may help identify ways to prevent the spread of disease.
Researchers found that male wasp genitalia serve as an effective anti-predator defense, deterring some tree frogs from eating them. Male genital spines are used to pierce and sting predators, preventing them from swallowing the wasps. This study highlights the significance of male genitalia in animal defense.
A new genus of scorpionflies has been discovered in Nepal, characterized by a spindly and extremely elongated abdomen. The males have long grasping pincers for mating, while the females lack these distinctive features, making classification more challenging.
Researchers at Nagoya University have developed a new method to control mosquito populations by altering the frequency of sound that males listen for. By using serotonin-inhibiting compounds, they reduced the range of frequencies males respond to and their response itself.
A recent study by 70 scientists highlights the devastating effects of climate change on insects, which play critical roles in ecosystems. Gradual warming and extreme events harm insects, affecting their physiology, behavior, and interactions with other species.
A team of 70 scientists warns that climate change will drastically reduce the ability to build a sustainable future based on healthy ecosystems. Insects face extinction and ecosystem disruption due to global warming and extreme weather events.
A team of researchers at CU Boulder used X-ray CT scans to study the internal structure of bee swarms, revealing a sophisticated mathematical rule governing their arrangement. The discovery could lead to insights into how bees maintain stability despite having tiny brains and could inspire the design of more resilient buildings or robots.
Predatory mosquito larvae employ two distinct methods to capture prey: one involves a harpoon-like head-propulsion action, while the other uses a sweeping tail to snare insects. This new research provides insight into the behavior of these tiny predators and their ability to feed on other aquatic insects.
Researchers discover that male spotted lanternflies are strongly attracted to the smell of honeydew produced by male conspecifics, emitting specific sex-attractant profiles. This finding may lead to the development of new pest management tools to reduce the population and spread of this invasive species.
A recent study by the University of Exeter reveals that honeybees rely on both color and pattern to identify flowers. The researchers found that bees can effectively distinguish between different flowers using a combination of these elements, suggesting that flowers don't need to evolve many different petal colors.
Researchers at the University of British Columbia identified a new high-salt receptor, IR7c, in fruit flies that governs their ability to detect dangerously high concentrations of salt. This discovery provides insights into how animals sense and avoid excessive salt, which is essential for survival but can be toxic in high amounts.
Scientists at UC Riverside demonstrate CRISPR technology can make permanent physical changes in the insect, passed down to three or more generations. The technology may hold promise for controlling the sharpshooter and preventing Pierce's Disease.
A species of African ticks, Argas brumpti, has been found to survive for up to 27 years without feeding, and reproduce healthily long after the last male tick dies. This record-breaking adaptability allows them to conserve water and energy in a dry environment.
Researchers from the University of Tsukuba have discovered that certain flavonoids inhibit an enzyme involved in the formation of a key insect hormone in the yellow fever mosquito. Flavonoids, found in plants and other organisms, also show larvicidal activity against mosquitoes.
Researchers discovered that robber flies employ a combination of two strategies to navigate cluttered environments and capture prey. They use an obstacle avoidance strategy to swerve around obstructions, which is then followed by a resumption of the conventional interception path once the fly has passed the obstacle.