Tested in more than 100 locations across the U.S., a clear sticky-panel trap proves effective in attracting brown marmorated stink bugs, putting an easier-to-use tool in the hands of growers and IPM professionals for monitoring populations of the invasive pest.
Native to Central and South America, the conehead termite has been found in just two places in the United States: Dania Beach and Pompano Beach, Florida. A new genetic analysis of these two populations suggests they arose from a single invasion.
In a recent study in Germany, targeted delivery of insecticides by unmanned aerial vehicles was effective against oak processionary moths. Researchers say such drones are suitable for aerial spraying during field studies and may open new doors for "precision forestry."
In many areas where the Asian citrus psyllid spreads citrus greening disease to commercial groves, it can evade control efforts by infesting residential citrus trees. A new attract-and-kill device, however, is being evaluated for managing psyllids on citrus in residential areas.
Sometimes, less is more. Case in point: the mass-rearing program that produces millions of sterile Mexican fruit flies (Anastrepha ludens) for managing wild populations. Scientists refining the effort find that a lower ratio of males to females in mating cages leads to higher fecundity and fertility in the females—and higher cost-effectiveness for the operation.
Planting strips of wildflowers next to crops is a boon for native bees, but few farms adopt the practice. A new study, however, shows farmers can turn an immediate profit by selling wildflower seeds retail, while the long-term benefits of increased pollination and crop yields materialize over time.
A new article in the Journal of Economic Entomology examines varying levels of resistance to Bt toxins developed by the pink bollworm in the United States, China, and India over the last 20 years, illustrating the importance of incorporating refuge crops in Bt systems.
In a recent study, the wasp Spathius galinae successfully established wild populations and outperformed other parasitoids in attacking invasive emerald ash borers in three northeastern states in the U.S. Researchers say it could become a useful biological control agent to protect native ash trees.
A study of the spatial distribution of German cockroaches in a high-rise apartment building found infestations were clustered in groups of adjacent units. But a building-wide integrated pest management program can be successful in eliminating most infestations and, importantly, stopping the cockroaches from migrating from one apartment to the next.
The rise in popularity of mandarin oranges has outpaced knowledge of how integrated pest management (IPM) for them might differ from that of larger oranges. New research combines field study with years of data from citrus groves and shows that mandarins stand up surprisingly well to insect pests.
Nonchemical Varroa-management methods are more common among small-scale beekeepers, but chemical varroacides show wide use among all types.
Sticky traps used to monitor orchards for the Asian citrus psyllid often catch an array of larger non-target organisms. But a thin layer of mesh fabric—the same kind used in bridal veils and ballet tutus—makes an effective screen to eliminate most bycatch while still catching the target pests.
Use of an insecticide can be counterproductive if it also harms natural enemies of a target pest. A new study puts several insecticides currently in use to manage spotted-wing drosophila to the test to see how they do or don't affect parasitoids of the invasive fruit fly.
If a structure has a gap or entrance large enough for brown marmorated stink bugs to fit through, they will find it. But a new study shows that slits less than 3 millimeters wide and holes less than 7 millimeters wide should successfully exclude the vast majority of the bugs. A related study examines how overwintering stink bugs react to corpses of their fellow bugs remaining from previous winters.
The khapra beetle does outsize damage to stored grains and is a top target at ports and border crossings. Researchers in Canada have found the threshold temperature that will kill the beetle at all life stages, even diapause.
Research in Pennsylvania shows that overall colony weight and the number of worker bees to be the leading factors in determining overwintering survival of honey bee (Apis mellifera) colonies. For colonies in which the combined weight of adult bees, brood, and food stores exceeded 30 kilograms, overwinter survival rates were about 94 percent.