entomology – Shamskm: A site to exchange knowledge and solutions

Lack of Plant Diversity Spurs Cankerworm Damage in Cities

By Guest PostAugust 10, 2014Environmentcaterpillars, cities, climate change, entomology, francesco panerai, harold barnard, lack, north Carolina, onditions on mars, plant diversity, state university, test drive spacecraft, urban environments, wasserqualitaet von fluessen

Research from North Carolina State University finds that a lack of plant diversity is a key contributor to the widespread defoliation caused by cankerworms in cities, and highlights the role that increasing diversity can play in limiting future damage.

Fall cankerworms (Alsophila pometaria) are caterpillars that are native to the eastern United States and hatch in early spring. The cankerworms defoliate trees and other plants, eating new leaves as they emerge – which is both unsightly and can ultimately kill the plants. (more…)

Researchers Develop System for Assessing How Effective Species Are at Pollinating Crops

By Guest PostDecember 25, 2013Scienceblueberry growers, david tarpy, efficiency rates, entomology, hannah burrack, north Carolina, pollination by bees, pollination efficiency, pollinator species, pumpkins, specific metrics, state university, tomatoes

From tomatoes to pumpkins, most fruit and vegetable crops rely on pollination by bees and other insect species – and the future of many of those species is uncertain. Now researchers from North Carolina State University are proposing a set of guidelines for assessing the performance of pollinator species in order to determine which species are most important and should be prioritized for protection.

“Widespread concerns over the fate of honey bees and other pollinators have led to increased efforts to understand which species are the most effective pollinators, since this has huge ramifications for the agriculture industry,” says Dr. Hannah Burrack, an associate professor of entomology at NC State and co-author of a paper on the new guidelines and related research. “However, various research efforts have taken a wide variety of approaches, making it difficult to compare results in a meaningful way. (more…)

Researchers Find Genetic Diversity Key to Survival of Honey Bee Colonies

By Guest PostJune 26, 2013Environmentapis mellifera, commercial colonies, david tarpy, dennis van engelsdorp, eastern united states, entomology, genetic diversity, genetic sample, honey bee colonies, honey bee population, jeffery pettis, key, north Carolina, state university, survival, survival rate, university of maryland, usda

When it comes to honey bees, more mates is better. A new study from North Carolina State University, the University of Maryland and the U.S. Department of Agriculture (USDA) shows that genetic diversity is key to survival in honey bee colonies – a colony is less likely to survive if its queen has had a limited number of mates.

“We wanted to determine whether a colony’s genetic diversity has an impact on its survival, and what that impact may be,” says Dr. David Tarpy, an associate professor of entomology at North Carolina State University and lead author of a paper describing the study. “We knew genetic diversity affected survival under controlled conditions, but wanted to see if it held true in the real world. And, if so, how much diversity is needed to significantly improve a colony’s odds of surviving.” (more…)

Research Finds Invasive Kudzu Bugs May Pose Greater Threat Than Previously Thought

By Guest PostApril 29, 2013Natureagricultural pest, alejandro, asia, crop damage, del pozo valdivia, dominic reisig, entomology, generation a, georgia, invasive kudzu bug, megacopta cribraria, nc state, north Carolina, soybean crops, state university, united states, virginia

The invasive kudzu bug has the potential to be a major agricultural pest, causing significant damage to economically important soybean crops. Conventional wisdom has held that the insect pests will be limited to areas in the southern United States, but new research from North Carolina State University shows that they may be able to expand into other parts of the country.

Kudzu bugs (Megacopta cribraria) are native to Asia, and were first detected in the U.S. in Georgia in 2009. They have since expanded their territory as far north as Virginia. The bugs have an interesting life cycle, which has been thought to be a limiting factor on far they can spread. (more…)

Antarctic and Arctic Insects Use Different Genetic Mechanisms to Cope With Lack of Water

By Guest PostMarch 13, 2013Environment, NatureAntarctic, antarctic midge, antarctic midge larvae, antarctic peninsula, anvers island, arctic circle, arctic insects, arctic springtail, belgica antarctica, coastal margins, collembola, cope, david denlinger, dry conditions, ecological niche, entomology, environmental ice, extreme ecosystems, folsomia candida, genetic mechanisms, genetics, genomic era, genomic revolution, genomic techniques, lack of water, liquid water, megaphorura arctica, national science foundation, nsf, oceans, ohio state university, peninsula region, polar arthropods, polar desert, polar environments, polar regions, risk of dehydration, sterile environments

Genomic techniques facilitate discovery that gene expression causes disparity

Although they live in similarly extreme ecosystems at opposite ends of the world, Antarctic insects appear to employ entirely different methods at the genetic level to cope with extremely dry conditions than their counterparts that live north of the Arctic Circle, according to National Science Foundation- (NSF) funded researchers.

Writing in the Proceedings of the National Academy of Sciences, the researchers concluded, “Polar arthropods have developed distinct… mechanisms to cope with similar desiccating conditions.” (more…)

The Wondrous World of Insects

By Guest PostJanuary 8, 2012Education, Natureann minnich, beetles, blenman elementary school, bob, butterflies, cockroach, discovery, education, entomology, favorite animals, goggy davidowitz, insect anatomy, insect discovery, iPhone, jaika ohja, kathleen walker, kindergarteners, la monica everett haynes, lives of insects, Madagascar, moths, plastic container, scientific exploration, stem fields, tucson area, university of alaska fairbanks, university of arizona, wondrous world of insects

*UA Insect Discovery program facilitators have spent years teaching Tucson area youth about the lives of insects while also encouraging them to pursue higher education and studies in science. The program is getting even more financial backing and other support.*

Holding a square, plastic container, Kathleen Walker turned toward the captivated group of dozens of elementary school students seated before her.

She asked: “Do you think there’s a cow in here?” The kindergarteners respond in unison: “No!” Walker smiled a bit. “No, that would be silly, right?” (more…)

Tag Archives: entomology