Articles tagged with Beetles
A new study by the USDA Forest Service reveals that climate conditions significantly impact bark beetle outbreaks, with optimal temperatures ranging from 1-4 degrees Celsius. Lower cumulative precipitation in prior years and higher current year precipitation also increase the likelihood of outbreaks.
Researchers at Uppsala University found that male genitalia morphology affects fertilization success in female seed beetles, driving rapid evolutionary changes. This competition among males has generated significant biological diversity and contributed to species formation.
A study published in Current Biology demonstrates that male genital shape affects fertilization success in a species of seed beetle. Males with longer genital spines produced substantially more offspring than those with shorter spines, highlighting the importance of competition among males in driving evolutionary changes.
Researchers discovered that African dung beetles use dung balls for evaporative cooling, climbing on them when overheating to maintain a cooler body temperature. This behavior is unique among insects and demonstrates the complex strategies insects employ to regulate their body temperature.
Researchers discovered that beetles roll their dung balls to avoid overheating, and climb on top of them to regulate body temperature. This behavior is especially prevalent during the midday sun, with beetles climbing their balls seven times as often as those on cooler ground.
A team led by James Liebherr discovered 14 new species of predatory carabid beetles in the Society Islands, expanding the known distribution of the genus Mecyclothorax. The new species have limited geographic distributions and are found at high elevations, highlighting the importance of conservation efforts to maintain biodiversity.
A new study found that nearly half of all retail firewood sold in the US West is infested with live insects. The research highlights the risks of untreated firewood transporting pests and pathogens to uninfested areas. Heat-treating firewood before sale could help mitigate these risks.
USDA scientists are working to minimize the threat of Laurel wilt disease caused by the fungus Raffaelea lauricola, vectored by the redbay ambrosia beetle. Chemical attractants for beetle traps and fungicides to slow disease spread have been developed.
A new study investigates the relationship between beetle body size, horn size, and grip strength in males. The researchers found that male beetles have a stronger grip than females, likely due to their larger limb size.
A new study found that female hide beetles (Dermestes maculatus) are attracted to cadavers by a combination of cadaver odour and male sex pheromones. The females only respond when both the odor and pheromones are present, optimizing their chances of reproductive success.
Researchers discovered that lady beetles intercept and utilize Azteca instabilis ants' alarm pheromones to locate safe egg-laying sites. This finding reveals a complex interaction between insects, with potential implications for pest management on coffee plantations.
Elk and rhinoceros beetles use insulin to grow big horns and attract mates. A study by Michigan State University found that these traits are not handicaps, but rather honest indicators of quality. The research suggests that the males' insulin dependence provides a way for them to show off their strength and suitability as partners.
Scientists have discovered a developmental mechanism responsible for the excessive growth of threatening horns or come-hither tail feathers in animals. The research reveals how insulin signaling pathways influence trait size, explaining why some males grow massive horns while others have minimal development.
UC Santa Barbara scientists have found that the tamarisk leaf beetle has evolved to delay its entry into hibernation, allowing it to survive and reproduce in the southern US. This adaptation enables the beetle to effectively control the invasive tamarisk plant, providing a cost-effective solution for containing the weed.
Researchers discovered a rare yeast species, Saccharomycopsis fodiens, in geographically distant locations, suggesting its spread may be linked to human migrations. The novel strain is parasitic and unusual in using alternative growth methods, providing clues about global micro-organism dispersal.
A recent report synthesizes published studies on the impact of bark beetles on wildfires, revealing that tree mortality can indeed affect fuels and fire behavior. However, the extent of these effects depends on various factors, including the time since the outbreak and the type of fuel or fire characteristic being studied.
A new study finds that bark beetles infesting pine trees can release up to 20 times more VOCs, contributing to haze and air pollution in forested areas. This could harm human health, reduce visibility, and affect climate.
Researchers use a historic fire to model the sensitivity of a natural sensor found in fire beetles. The study reveals that these sensors can detect extremely low levels of heat, rivaling those of radio telescopes.
A new study found that beetle-infested pine trees release up to 20 times more VOCs than healthy trees, contributing to haze and air pollution. The research suggests that the bark beetle epidemic could lead to higher monoterpene concentrations in the air, harming human health and impacting climate.
Research ecologist Katherine Elliott and her team found that cutting and burning sites reduces heavy fuel loads, improves soil nutrient status, and opens the canopy for restoration of shortleaf pine communities. However, poor pine regeneration was observed due to drought, seed production issues, and hardwood competition.
A new study found that rising temperatures and reduced rainfall in European Alpine spruce forests led to more frequent and severe bark beetle attacks. The study suggests that sustainable forest management strategies are necessary to mitigate the impact of climate change on these ecosystems.
The article suggests that preventative measures are most effective in managing bark beetles, which can be controlled naturally by environmental factors. Maintaining a diversity of healthy tree species and adequate spacing between host trees reduces the likelihood of beetle outbreaks.
A two-year study found that omnivore dung, including chimpanzee and human dung, is the most attractive to dung beetles. Native Nebraskan dung beetles showed little attraction to bison dung compared to exotic animal dungs.
Researchers discovered that arum family plants evolved their scent along pre-existing communication of scarab beetles, not through mutual adaptation. This finding suggests coevolution between plants and pollinators might be less common than thought.
Researchers found pine beetles can breed twice a year, leading to up to 60 times more beetles attacking trees annually. Warmer temperatures also allow beetles to survive and attack trees with previously developed defenses.
The study found that four of the six most commonly collected beetles were introduced species, suggesting they displaced native species due to available niches or competition. Dynamic and unique dung beetle diversity was observed on each farm, influenced by herd management practices.
The article provides IPM program recommendations for managing the southern pine beetle, a chronic insect pest in southeastern US pine forests. The beetle has three population phases, and an IPM program should be tailored to each phase, with prevention and restoration being primary concerns during the latent phase.
Studies of diving beetles reveal that sperm form follows female reproductive organ function, challenging the paradigm of post-mating sexual selection. Researchers found diverse sperm shapes and structures adapted to navigate complex female reproductive tracts, suggesting females can drive evolutionary changes in male traits.
A study of forked fungus beetles reveals that their social positions are related to reproductive success, suggesting that natural selection drives the evolution of social behavior. The researchers found that individual behaviors can influence their position in society, leading to varying levels of mating and reproduction.
Researchers at Lund University found that dung beetles perform a mysterious dance to ensure straight-line departure from the dung pile, crucial for avoiding intense competition. The beetles store compass readings from celestial cues during this dance to guide their navigation.
A study published in PLOS ONE found that dung beetles perform a specific dance before moving away from the pile, upon encountering obstacles, or when losing control of their dung ball. This behavior is crucial for efficient navigation and allows them to quickly move away from intense competition.
Researchers at the University of Georgia have found that releasing ladybird beetles in the upper crown of infested trees can effectively control hemlock woolly adelgid populations. The study suggests a new approach to managing the invasive pest, which has been killing Eastern hemlocks across the southeastern US.
Researchers discovered that predators choose diets with optimal balance of protein and fat to produce healthy eggs, outperforming those without nutritional balance. This finding challenges the assumption that predators focus solely on calorie quantity, highlighting their selective eating behavior.
Ecologists warn that frankincense production could be halved in the next 15 years as Boswellia tree populations decline dramatically. The study found that factors other than tapping, such as fire, grazing, and insect attacks, are contributing to the decline.
Researchers studied Onthophagus beetles, finding that male and female genitalia evolve rapidly in concert, often before size changes. This codivergence occurs more quickly for shape than size, suggesting that reproductive isolation can be established faster than previously assumed.
The southern pine beetle is the most destructive forest pest in the US, causing significant economic and ecological harm. The new synthesis, Southern Pine Beetle II, updates research on the insect's biology, ecology, and management, providing current state-of-the-art knowledge.
Scientists have described two new species of extremely long-legged beetles from the Philippines, assigning larval stages to adult images using mitochondrial DNA. The researchers aim to provide basic knowledge and identification tools for tropical species as freshwater bioindicators.
The cereal leaf beetle, introduced in the US in the early 1960s, has rapidly spread across the country, becoming a major pest of oats, barley, and wheat. Current research focuses on developing new information and procedures to encourage growers to adopt integrated pest management approaches.
A living species of aquatic beetle, Helophorus sibiricus, was discovered in 20-million-year-old sediments in southern Siberia. The fossil provides new data on the average duration of an insect species and suggests that some species may survive for millions of years.
Researchers found that ground beetle larvae use a unique method to attract and feed on amphibians, tricking them into thinking they are tasty prey. This phenomenon has significant implications for understanding the environmental impact of invasive species.
In a remarkable discovery, ground beetle larvae have evolved to lure and consume amphibians, reversing the typical predator-prey relationship. The larvae use unique movements and sit-and-wait strategies to draw in prey, before attaching themselves using double-hooked mouthparts.
Scientists discovered that a protein called Knickkopf protects the insect's newly formed cuticle from being dissolved by chitinase. This finding has enormous potential for improving selective pest control and developing new biomaterials like football padding or lightweight aircraft components.
The University of Guam's entomologist has received $205,500 in grants from the USDA to control the coconut rhinoceros beetle population on the island. The beetle has shown high resistance to current biocontrol methods, including pheromone-baited traps and a biocontrol virus.
Researchers discovered that desert seed beetles use a strategy of stacking their eggs as shields against parasitic wasps. The beetles lay their eggs on seed pods, then stack multiple layers to protect them from the wasp species. This behavior prevents the wasp larvae from developing and allows the beetle offspring to survive.
Researchers at UC Riverside suggest controlling firewood movement can contain the goldspotted oak borer invasion, which has killed over 80,000 oak trees. The beetles, native to Arizona, likely traveled on infested firewood, targeting coast live oaks and other species with no natural resistance.
The Asian longhorned beetle has already spread to nearby forests in Worcester, Mass., posing a threat to the region's forests. The beetle disproportionately attacks large maple trees, including red and sugar maples, which are vital to New England's iconic landscape.
Researchers found that ground beetles significantly reduce grass weed populations in UK farmland, improving agricultural productivity. By controlling weeds, ground beetles can help farmers reduce herbicide use and increase crop yields.
A new species of blind beetle, Paralovricia beroni, has been discovered in Bulgarian caves and clarifies questions about its systematic position within the Carabidae family. The discovery provides insight into the paleogeographic history of the Balkans, revealing a previously unknown subtribe Lovriciina.
A subset of fungus-farming ambrosia beetles is in the early stages of a global epidemic threatening economically important tree species. The beetles kill trees by triggering a strong immune response from the tree's own system, causing it to die of thirst.
A Czech University of Life Sciences team identified four new species of jewel beetles from local people in Southeast Asia. The discovery expands the genus Philanthaxia to 65 known species, emphasizing the need for biodiversity inventory and conservation efforts.
Ladybird beetles' ability to produce anti-ant defences has led to their high diversity, with most species having one or both of these defences. This evolutionary shift allowed ladybirds to successfully poach soft-bodied scale insects from under the noses of aggressive ants.
A CU-Boulder study indicates that mountain pine beetle infestations could lead to earlier snowmelt and increased water yields. The research found that dead trees with red needles accumulated more snow than living stands, while those with gray phase trees melted faster due to reduced snow interception and increased solar radiation.
Two new beetle species have been identified in streams of Pyrenees and Pre-Pyrenees mountains in Spain and France. The insects have a restricted range and are similar to other European species.
Researchers discovered that seeds from cones on the forest floor of lodgepole pines can provide a viable seed bank after mountain pine beetle outbreaks, with high germination capacity. However, germination capacity decreases over time, highlighting the need for fire to trigger regeneration.
Researchers from Tel-Aviv University discovered that ground beetles of the genus Epomis prey on live amphibians at night, contrary to their daytime sheltering behavior. The study found that two species of Epomis beetles attack different amphibian species, with only one species preying on a particular species.
Researchers are testing a fungal pathogen and releasing non-stinging wasps to control the emerald ash borer, which has devastated forests and tree-lined neighborhoods. The fungus, Beauveria bassiana, kills beetles when applied to infested trees before wasps are released.
Beetle researchers have discovered that the unique structural arrangements of exo-skeletal chitin layers in their elytra create a metallic appearance by reflecting light through different refractive indices. This phenomenon enables the beetles to produce striking gold and silver colors, similar to those found in precious metals.
Researchers have identified a macrocyclic lactone compound that female emerald ash borers release while feeding, attracting male borers. This discovery has the potential to improve traps for monitoring and controlling the tree-killing beetle.
The mountain pine beetle has invaded jack pine forests in Alberta, successfully jumping species from its main host to the dominant Canadian boreal forest tree. Researchers tracked the infestation's progress across Alberta, finding the insects as far east as Slave Lake, and plan further research to estimate their potential speed of spread.
A University of Georgia researcher developed new models to explain how invasive Asian ladybugs have quickly spread throughout the country and into Canada. The models predict that invasive species feeding on both lower-level food sources and competing species will spread faster.