Articles tagged with Invertebrates
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A recent study by University of California - Riverside researchers has discovered that lice are a significant threat to free-range chicken populations, causing skin lesions and disrupting healthy behaviors. The study's findings have implications for states like California, where all egg production is cage-free.
A recent study reveals that some honeybees exhibit superior learning abilities compared to others, which may be attributed to distinct gene expression patterns in their brains. The research explores the behavioral and genetic underpinnings of individual differences in learning performance among Apis mellifera.
A noncoding gene has been identified as the deciding factor in determining sex in Argentine ants, with a specific genomic region being crucial to this process. The gene does not encode a protein but rather produces an RNA that influences sex determination.
Researchers used pyrite to study the relationship between sediment mixing and oxygen levels in ancient oceans. They found that small amounts of sediment mixing can expose buried minerals to enough oxygen to start oxygen buildup. This challenges conventional wisdom about the role of oxygen in oxygen accumulation.
A new study found that biodegradable teabags made from polylactic acid (PLA) can take years to break down in soil and cause harm to earthworms. The research highlights the need for clear disposal information on product packaging, as many manufacturers are not providing accurate guidance.
Researchers have identified over 2000 protein-coding genes that change significantly between summer and winter in the starfish's reproductive process. This study provides a promising breakthrough in understanding how crown-of-thorns starfish communicate during reproduction, which could lead to the development of natural pest control me...
Mantis shrimp use their tail coils as shields to reduce the impact of rival blows, dissipated more energy than their armor can absorb. Researchers found that this behavioral adaptation increases energy loss by up to 90%
Researchers have challenged the conventional view of myriapod ovarian morphology by discovering structural specialization in pill-millipede Hyleoglomeris japonica. The follicle epithelium, previously considered a homogenous structure, exhibits two distinct regions with enhanced and reduced metabolic activities.
New research demonstrates that incorporating widgeongrass into seagrass restoration efforts can increase the portfolio of species diversity and enhance long-term success. The study found that seeding widgeongrass in the fall with minimal pre-treatment resulted in highest survival and growth rates.
A team of scientists has created a single-cell atlas for the highly regenerative worm Pristina leidyi, revealing new insights into its regenerative abilities. The study characterizes all major annelid cell types and provides molecular signatures that could inform stem cell technologies and regenerative medicine.
A study analyzing canned salmon from 1979 to 2021 found stable anisakid worm levels in coho and sockeye salmon, while pink and chum salmon showed a rise. This suggests that the marine food web has adapted to changing conditions, with rising parasite levels indicating potential ecosystem shifts.
A microscopic pathogen found in the Caribbean is causing a devastating die-off of long-spined sea urchin populations and threatening coral reefs worldwide. The USF study reveals the same parasite, identified last year, has spread to new species in the Sea of Oman, putting global sea urchin populations at risk.
Researchers discovered how honeybees interpret dances that relay directions to food, even in complete darkness. By analyzing bee movements and antennae signals, scientists found a neural mechanism that combines sensory data from the two systems.
Researchers found that streams with ample groundwater connections have greater microbial diversity and are more effective at preventing toxic metal entry. They also better detoxify existing metals.
Scientists at UC Riverside have discovered a tiny worm species that can control crop pests in warm, humid environments. The new Steinernema adamsi nematode is nearly invisible and can kill insects with a low dose, making it a potential alternative to pesticides.
The study reveals that non-native earthworms have colonized 97% of soils across North America, with alien occupation higher in the northern part of the continent. This poses a threat to native ecosystems, including forests and grasslands, and highlights the need for better understanding and management of these invaders.
Researchers found that wolf spiders can't easily signal others or perceive danger from predators on rain-soaked leaves compared to dry ones. Male spiders use visual and vibratory signals for courtship, but vibrations are better received in dry leaves.
A UC Riverside research project will focus on changes in the gene network that specify early intestinal precursor cells in nematodes like Pristionchus pacificus. Gene networks describe how genes turn each other on and off, and changes in these networks can lead to diseases such as cancer.
The 15th annual horizon scan highlights 15 key conservation issues, including declining invertebrate populations and altering marine ecosystems. The study emphasizes the need for continued innovation in sustainable energy technologies to address climate change.
A new analysis of European Red List species reveals that 19% are at risk of extinction, including a large proportion of invertebrates. Agricultural land-use change poses a significant threat to these species, highlighting the need for conservation efforts to counter biodiversity loss.
A study found that microplastic exposure negatively affected the survival, growth, and emergence of sediment-dwelling invertebrate larvae, but not their offspring. Ingestion of microplastics may inhibit food acquisition or nutrient assimilation in parentals, which can lead to negative impacts.
A new species of orb-weaving spider, Venomius tomhardyi, has been described from Tasmania. The genus belongs to the Araneidae family and is distinct from related genera due to its unique behavior and genitalia.
A research team led by the University of Göttingen has discovered fossil spines that indicate the existence of irregular echinoids in the deep sea for at least 104 million years. The study provides insights into the past, including a mass extinction event that caused smaller species to thrive and changes in spine morphology.
Researchers found that mothers' social environment predicts their sons' reproductive tactics, such as sneaking or guarding females. A biased female sex ratio in the maternal generation leads to increased male-male competition, resulting in more males and intense mating behaviors.
A comprehensive study reveals a stagnation in European freshwater biodiversity recovery, highlighting the need for intensified mitigation strategies. The analysis of 1,816 time series of freshwater invertebrate communities between 1968 and 2020 shows promising increases until the 2010s, but a significant slowdown since then.
A review of 82 studies found human activities influencing insect habitats, leading to declines in Central and Western Europe. Agricultural activities, urbanization, and climate change are identified as primary drivers of observed changes in insect populations.
A new species of the Persian Gold Tarantula has been discovered in northwestern Iran, belonging to the genus Chaetopelma. The newly described species, Chaetopelma persianum, is an obligate burrower and inhabits high elevations in well-vegetated mountainous regions of the northern Zagros Mountains.
Two species of hairworms are missing genes responsible for producing cilia, a feature present in all other known animals. This loss likely occurred early in the evolution of the group and may impact their parasitic behavior, but its exact effects remain unclear.
The study reveals the life cycles of four Lonomia Walker species, characterized by unique morphological features. New parasitoids and host plants have also been discovered, shedding light on the complex relationships within this genus.
A new study found that establishing a wildflower meadow in the historic grounds of King's College, Cambridge increased species richness and abundance by three times compared to adjacent lawn. The meadow also reduced greenhouse gas emissions by an estimated 1.36 tonnes CO2-e per hectare per year.
Researchers found that wolf spider species in Nebraska exhibited similar diets, with many eating the same types of prey. This suggests a complex food web where predators are not just competing for resources, but also engaging in cannibalism to regulate their populations and stabilize the ecosystem.
Researchers discovered that coastal marine invertebrates can survive and reproduce on floating plastic debris in the open ocean. This finding suggests a rapid shift in biogeographical boundaries due to floating plastic pollution.
Researchers at University of California - San Diego found that vertebrates acquired a special protein from bacteria more than 500 million years ago. This discovery reveals a new piece of genetic material introduced from foreign bacterial genes, leading to unique functionality in vertebrate eyes.
Scientists discovered that male yellow crazy ants have maternal and paternal genomes in different cells, making them chimeras. This unique phenomenon occurs within a single fertilized egg, contradicting the fundamental law of biological inheritance where all cells should contain the same genome.
Human activities are causing rapid changes to the ocean soundscape, harming invertebrates through cellular and ecosystem-level impacts. The study highlights the sensitivity of various invertebrates to underwater sound and emphasizes the need for urgent research and mitigation strategies.
Researchers at the University of California - Riverside have discovered a way to deactivate mosquito sperm, preventing them from swimming to or fertilizing eggs. This breakthrough could help control populations of Culex mosquitoes that transmit infectious diseases like encephalitis and West Nile Virus.
New research suggests brown widow spiders actively seek and kill nearby black widows, displacing them in parts of the southern US. Brown widow females are also larger and more fertile than black widows, with a higher reproductive success rate.
Researchers from Hiroshima Shudo University and the University of Tokyo have successfully identified species of deep-sea brittle stars using a novel metabarcoding approach. This method analyzes environmental DNA released from marine invertebrates, enabling efficient and cost-effective monitoring of biodiversity.
A study by Pusan National University researchers investigates the effects of mild acid hydrolysis on sulfated fucans in sea cucumbers and sea urchins. The results show selective 2-desulfation, leading to an 8-sugar-long oligosaccharide production.
New research collates 100 years of data, suggesting significant declines in UK earthworm abundance could have occurred due to changes in the countryside. The study highlights the importance of monitoring soil invertebrates and their impact on ecosystem health.
A husband-and-wife research team at UC Riverside found a simpler gene network is involved in specifying the gut in nematodes related to Caenorhabditis elegans. The discovery was made possible by the COVID-19 pandemic, which freed up time for the researchers to explore their question of how nematodes develop their gut.
Researchers discovered a unique anatomical design in octopus nerve cords that connects arms symmetrically, providing new insights into alternative nervous system structures. This discovery may aid in the development of new engineered technologies, such as robots and autonomous underwater devices.
Researchers found that less intensively managed grasslands had greater diversity of plant species and correlated with better soil health, including increased nitrogen and carbon levels. In contrast, intensively farmed plots showed fewer plant species, but some saw improvements in soil health over time.
A new study reveals that global warming can lead to an exponential increase in heat injury accumulation for ectothermic organisms, with temperatures exceeding their tolerance level resulting in severe injuries. The rate of heat injury doubles for each degree the temperature rises.
Researchers have discovered that reef halos, visible from satellite imagery, can provide insights into coral reef health globally. These bands of bare seafloor surrounding coral patch reefs are more common and dynamic than expected, with the potential to serve as a window into reef health.
New research by Frank Schroeder's team reveals two parallel biosynthetic pathways for serotonin production in C. elegans, challenging the long-held assumption that serotonin is made and quickly broken down. The findings suggest new therapeutic targets for treating anxiety, depression, and eating disorders.
A research group from Japan has found a new genus of fungus in the Kickxellales that inhabits the guts of cave crickets, suggesting the evolutionary transition between saprobes and gut-inhabiting fungi. The discovery sheds light on how fungi in the Kickxellomycotina evolved to live inside animals.
Researchers at University of California - Riverside discovered a chemical cocktail in human skin that summons disease-spreading mosquitoes. The combination of carbon dioxide plus two chemicals, 2-ketoglutaric and lactic acids, elicits a scent that attracts female Aedes aegypti mosquitoes, vectors of Zika and other viruses.
A high-resolution map of ant biodiversity has been created, revealing areas with high diversity and potential for new species discovery. The study's findings highlight the importance of protecting critical regions with high ant diversity.
A recent study has identified an important molecular analogy between the octopus brain and the human brain, specifically with LINE transposons active in both species. This discovery sheds light on the secret of the intelligence of these fascinating organisms, suggesting a convergent evolution of cognitive abilities.
A new species of sea anemone has been discovered off the coast of Japan, forming a symbiotic relationship with the hermit crab. The anemone attaches itself to the crab's shell using a hard shell-like secretion, while the crab taps and pinches the anemone to move it to its new shell.
Researchers analyzed DNA of Demodex folliculorum mites living in human hair follicles, finding unusual body features and behaviors due to their isolated existence. The study suggests these mites may transition from external parasites to internal symbionts as they shed unnecessary genes and cells.
A UC Riverside genetic discovery found that mosquitoes lack the primary ecdysone transporter, allowing researchers to develop a mosquito-specific insecticide. This breakthrough could help control Zika, dengue, and other virus-carrying mosquitoes without harming beneficial insects.
A team of University of Hawaii researchers found that the number of hours of darkness during the lunar cycle triggers mature Hawaiian box jellyfish to swim to shore to spawn. The study also revealed that jellies are likely to come from the lee of Diamond Head Crater, where they benefit from shelter and food.
A large-scale international study, led by Tel Aviv University's Dr. Omri Bronstein, found that many species of echinoids, including sea urchins, survived a mass extinction event 50 million years earlier than thought. The findings suggest that estimates of evolutionary timelines may err by tens of millions of years.
Fossil analysis reveals mollusk communities were resilient to major climatic shifts but struggled under human-induced changes, highlighting the need for conservation efforts.
Researchers at Virginia Tech discovered 17 new species of twisted-claw millipedes, including Nannaria swiftae, named after singer-songwriter Taylor Swift. The millipedes play a valuable role in decomposing leaf litter and have unique characteristics such as shiny caramel-brown bodies with white spots.
A new study found that mountain streams are signaling climate change through changes in invertebrate populations, which can indicate ecosystem health. The researchers discovered that diversity tends to increase downstream but is lowest near lakes, highlighting the need for protecting these ecosystems from diversions and habitat damage.
Researchers sequenced DNA from hundreds of bryozoan specimens to study their evolution. They found that species with brooding chambers had higher diversity, as these structures confer a clear benefit to the parent colony.
A new study reveals that marine organisms attach themselves to plastics and are transported by marine currents, contributing to the introduction of non-native species. The research found diverse marine life attached to plastic debris, including bryozoans, which could become invasive and alter ecosystems.