Articles tagged with Larvae
A growing number of cases in Western countries have been linked to the consumption of raw or undercooked fish, specifically sushi. Anisakiasis is caused by eating infected fish and can lead to symptoms such as upper gut pain, vomiting, fever, bowel obstruction, and bleeding.
A team of researchers has discovered that parasitic fig wasps use odour sensors to find their host larvae within the fruit. The study, published in Journal of Experimental Biology, found that the wasp's ovipositor can detect carbon dioxide and other gases emitted by developing larvae.
Researchers have identified a unique pheromone in Indian jumping ant larvae that signals which larvae are likely to become queens. The discovery reveals how the colony ensures proper caste differentiation and highlights the importance of pheromones in social insect behaviors.
Researchers have found a single enzyme responsible for producing a unique chemical defense in mushrooms, which can inhibit the growth of insect larvae. This novel mechanism is crucial for mushroom survival and highlights the importance of polyketide synthases in fungal defense.
Researchers have found a way for a caterpillar to break down polyethylene, a common type of plastic. The larvae of the Galleria mellonella moth can digest and chemically transform polyethylene into ethylene glycol, offering a potential solution to managing plastic waste.
A periodic time-delayed model of Lyme disease predicts its spread in North America and Canada, incorporating seasonality and climate factors. The model suggests that reducing tick recruitment rates can help eliminate the disease.
A gene in wild tobacco regulates the production of bergamotene, which increases pollination success and protects against herbivory. The compound is emitted at night to attract nocturnal pollinators, such as Manduca sexta moths.
Researchers have found that pain relief medication can ease the discomfort of zebrafish larvae, offering a potential replacement for adult fish used in scientific research. This breakthrough reduces animal suffering and paves the way for more humane testing methods.
Researchers found that Chaoborus spp larvae absorb excess methane bubbles to inflate their air sacs, enabling them to reach the surface. This mechanism not only saves energy but also exacerbates greenhouse gas emissions. Improving water quality is crucial in mitigating this effect.
An unknown Portuguese moth was finally named and placed in the tree of life after a 22-year mystery. The species, Ekboarmia miniaria, is the smallest in its genus, with only three females found in 2009 providing key evidence for its classification.
Scientists have video-documented two types of brood parasitism by scuttle flies, attacking immature ants in Brazil and Costa Rica. The observation reveals that these behaviors may not be as rare as previously thought, offering a glimpse into the remarkable behaviors of phorid flies.
A new species of parasitic wasp, Euderus set, has been discovered in the southeastern United States, manipulating its host's behavior to survive. The wasp's behavior is reminiscent of ancient Egyptian mythology's god Set, who controlled evil animals and even killed his brother Osiris.
A £12,000 grant from the NC3Rs CRACK IT Solutions scheme will support a partnership with contract research organisation Envigo to assess whether moth larvae can reduce mammal use for toxic chemical testing. The larvae have already helped scientists reduce their mammal usage by up to 80%, according to Dr Olivia Champion.
A University of California, Riverside graduate student has discovered several new species of wasps that feed on ants, including one named after musician Ani DiFranco. These wasps have a unique association with extrafloral nectaries and can potentially control invasive ant populations.
A widely used crop chemical, Sylgard 309, increases the susceptibility of honey bee larvae to a deadly virus, Black Queen Cell Virus. This finding suggests that exposure to organosilicone adjuvants negatively influences immunity in honey bee larvae, resulting in enhanced pathogenicity and mortality.
A USGS-led study found that high temperatures and lower humidity kill off ticks that transmit Lyme disease, making it less common in the South. The researchers discovered that southern black-legged ticks tend to stay hidden under leaves to retain moisture, increasing their survival rates.
A groundbreaking study has shown that baby reef fish possess an internal magnetic 'compass' that enables them to swim towards their home reef at night. The researchers, led by Professor Mike Kingsford, found that the tiny Cardinal fish can use their magnetic senses to orient themselves in total darkness.
Tiny starfish larvae create vortices that bring food close enough to grab while simultaneously speeding away from scarcity. This mechanism allows the larvae to make feed-versus-speed tradeoffs, optimizing their energy expenditure.
Researchers at Goethe University Frankfurt have discovered a class of peptides that can kill insect larvae, producing up to four times more compounds than previously thought possible. The peptides, known as rhabdopeptide/xenortide peptides (RXPs), are produced by bacteria and play a crucial role in infection.
Researchers at Stanford University studied a rare marine worm species, discovering that its larvae undergo a prolonged phase with little more than a head. This indicates that many animals in the ocean likely share this trunk-less stage, shedding light on animal development and evolution.
Researchers uncovered a molecular pathway that responds to nutrient scarcity and lowers synapse activity in fruit fly larvae. This finding suggests that fasting may be beneficial by reducing neurotransmitter release and saving energy expenditure.
The study found that fly larvae contribute to nest sanitation, leading to heavier and larger nestlings. The presence of more fly larvae had a positive effect on nestling development, while fewer larvae resulted in smaller and lighter nestlings.
Research from Oregon State University reveals that rockfish larvae stick together in sibling groups until they move to shallower water. The study sheds new light on how rockfish disperse and recruit in the ocean.
Scientists found that dung beetles can reduce the survival of parasites in cowpats, which cause serious illness in cattle. The study suggested that dung beetle activity helps ventilate cow pats, creating conditions for parasite egg hatching.
Researchers found four new chromosome rearrangements unique to the Caucasian population of Glyptotendipes salinus, which are distinct from previously studied populations in Altai and Kazakhstan. The larvae were also found to be twice as short than those in other regions.
Researchers found that amphibian larvae increase their vegetable consumption during heat waves, leading to a reduction in carnivorous diet effectiveness. This adaptability may become common among species living in continental environments as heat waves intensify due to climate change.
Schistosomiasis larvae employ a unique T-swimming style when moving against gravity, which helps them reach the water's surface. By understanding this biophysics, researchers hope to thwart infection and prevent re-infestation.
A team of scientists has identified three new enzymes responsible for terpene production in corn, which attracts parasitic wasps that consume caterpillars. This discovery could lead to the development of more caterpillar-resistant corn varieties.
Research suggests that large, old fish in mesophotic zones (30-150 meters) contribute to the sustainability of shallower reef populations. These fish produce larger eggs with higher survivorship rates, which helps to maintain population numbers.
Researchers at UCLA have identified the structure of a molecule toxic to disease-carrying mosquitoes, including those that transmit dengue fever and Zika virus. The toxin, BinAB, is lethal to Culex and Anopheles species but not Aedes, which carries Zika virus and dengue fever.
A recent study found that no single protein in royal jelly determines a honeybee's queen development. Instead, the nutrient mix is essential for larval growth and caste determination. The researchers' experiments produced intercastes with characteristics of both workers and queens.
Researchers will study zebra mussel populations in three Texas lakes, focusing on growth rates, life spans, and impact on lake productivity. The goal is to understand causes of population collapses and inform management strategies.
Researchers found that female Aedes aegypti mosquitoes can pass the Zika virus to their eggs and offspring. This discovery highlights the importance of using larvicides to curb the spread of the virus. The study suggests that controlling adult mosquitoes may not be enough to eliminate the virus.
Female mosquitoes can pass the Zika virus on to their eggs and offspring, bolstering the need for larvicide use as an integral part of controlling the spread of the virus. The study found that culture of adults infected with the virus resulted in a high rate of transmission to their offspring.
A new study suggests that sound plays a limited role in attracting coral larvae to reef systems. By recording particle motion using accelerometers, researchers found that the signal drops rapidly below levels detectable by most marine species just a few meters away from the reef. This finding challenges previous studies and highlights ...
The moth species Heliothis subflexa has a specialized diet of Physalis fruits, which provides it with direct and indirect protection through the presence of withanolides. These compounds increase larval growth and immune system activity while also protecting against bacterial infections caused by Bacillus thuringiensis.
Researchers at Hiroshima University discovered that lobsters wrap their feces in protective membranes to prevent jellyfish stingers from injecting venom. This finding advances efforts for sustainable lobster aquaculture and informs the development of artificial food for farmed lobsters.
Scientists have identified a brain circuit in fruit flies that enables them to ignore protein deficiencies and transition into the pupal stage despite nutritional stress. This discovery has implications for understanding developmental regulation in insects and potential applications to mammalian physiology.
A team of scientists used a state-of-the-art computer model to test Charles Darwin's hypothesis that marine species cannot cross the Eastern Pacific's 'impassable' marine barrier. The study found that even under extreme El Niño conditions, coral larvae could not survive long enough to make the trip across the ocean.
New research shows coral larvae cannot survive a 5,000-kilometer trip across the Pacific to replenish eastern corals. Simulations indicate reefs in the Eastern Tropical Pacific are isolated and vulnerable to disturbances.
Coral larvae can't survive long enough to cross the Pacific Ocean due to changing ocean currents, supporting Darwin's opinion of an impassable barrier. The study highlights the importance of local conservation for remote and poorly-protected coral reefs.
Researchers have discovered a novel trait evolution mechanism by studying cyclops-eyed beetles, which recruited existing genes to create new physical traits in adulthood. The study reveals that lingering gene expression can serve as a 'stepping stone' for recruiting genes into making new traits.
Researchers found that tropical sea urchin eggs and larvae are vulnerable to temperature changes, with early stage larvae dying at temperatures above 32 degrees C. Long-term exposure to warmer waters reduces larval survival and growth, highlighting the impact of climate change on these small marine animals.
Researchers have successfully reared the larvae of a parasitic fly on chicken blood, paving the way for a new method to control its population. This breakthrough could be key to saving critically endangered birds like the mangrove finch in the Galapagos Islands.
Male cicadas use their calls to attract mates, but they also draw in pregnant female flies looking to lay eggs. The study found that both males and females demonstrated reproductive intent and successfully mated with each other.
Researchers discovered that fungal blastospores can kill mosquito larvae rapidly, with specific characteristics contributing to their virulence. The study found that blastospore invasion can occur even in the presence of drugs inhibiting protease activity, making them a promising alternative to chemical pesticides.
Research reveals that a fly species uses cicada sounds to locate hosts, attracting both females and males for potential mating. The study found that hearing may have originated as a means of finding a host but has become useful in another way.
Fossil record reveals ancient insect behavior of debris-carrying and camouflage, providing insight into early evolution. Convergent evolution led to diverse adaptations in morphological characteristics.
Researchers found that the elephantnose fish switches between electrical and visual senses for optimal perception, with its brain prioritizing reliable information. The fish demonstrated unexpected abilities, such as trusting electrical signals over visual stimuli at close range, and using a combination of senses for distant objects.
Researchers analyzed amber fossils of Cretaceous insects, finding complex camouflage strategies dating back over 100 million years. Insects employed plant residue, grains of sand, and even prey remains to blend in with their surroundings.
Researchers at Mainz University discovered a new mechanism of neonicotinoids harming honeybees by reducing acetylcholine in royal jelly/larval food. High doses of neonicotinoids damage microchannels, jeopardizing normal development and survival.
The study found that Varroa mites prefer infesting adult bees at mid-age, or during the nurse phase, which takes care of larvae. This preference significantly affects the mite's reproductive fitness and success later on.
Researchers at Oregon State University found native Olympia oysters are more resilient to ocean acidification due to their slower shell-building phase. This trait allows them to survive high levels of acidity, contrary to the rapid development seen in Pacific oysters.
Marine invertebrate larvae of sea urchins demonstrate active responses to turbulence and flow conditions by adjusting their swimming speeds. This behavior has significant implications for the adult populations' transport, survival, and recruitment.
Larval fish exposed to microplastic particles displayed changed behaviors, such as ignoring natural food sources and failing to respond to predators. This led to increased mortality rates and potentially severe consequences for marine ecosystems.
A new study found that microplastic particles negatively impact European perch larvae, reducing hatching success and survival rates. Exposure to high concentrations of plastics also alters feeding preferences and prevents fish from responding to predatory cues.
Researchers discovered the optimal temperature of 25 degrees Celsius for Spathius galinae, a host-specific parasitic wasp targeting emerald ash borer. The wasp's unique ability to detect vibrations in bark allows it to locate larvae and is highly host-specific, minimizing the risk of impact on other species.
Researchers have developed a biodegradable seed coating that functions like nature's defense system, protecting plant seeds from insects without impairing germination. The coating has been shown to be effective against various cereal pests, including mealworms and beetles, but not against wheat weevils.
Seabirds nest in areas where food is concentrated due to ocean currents and climate. The locations of nearly two million seabird colonies along Norway's coast north of the Arctic Circle are influenced by fish larvae hot spots.
Research finds honeybees anticipate and react to rapid temperature increases sooner in larger groups of 10, suggesting decentralized information gathering improves response time. This study explores the role of group size on self-organization and biological environments.