IFAS News

University of Florida

UF/IFAS researchers to present forest biotechnology promise at national conference

Topic(s): Economics, Entomology and Nematology, Environment, Forestry, IFAS, Pests, Research

Jiri Hulcr mug

Jiri Hulcr

GAINESVILLE, Fla. — University of Florida Institute of Food and Agricultural Sciences researchers will introduce genetic biotechnology as a potential means to preserve forests at a national conference next week in Washington, D.C.

Jiri Hulcr, an assistant professor in the UF/IFAS School of Forest Resources and Conservation, and one of his doctoral students, Caroline Storer, will host the symposium at the North American Forest Insect Work Conference May 31 to June 3.

Hulcr sees this conference as an opportunity for the UF/IFAS forest entomology team to disseminate innovative solutions to maintain tree health.

“Exploring the use of biotechnology in tree health protection is important to us, because we are increasingly running out of other options,” Hulcr said.

Additionally, he said: “Trees and forests provide jobs and benefits for everyone. Yet, around city neighborhoods and rural forests, anyone can witness the diminishing health of trees. The culprit is exotic pests and diseases. Forget pollution or drought: It is destructive tree diseases and pests — imported by overseas travelers or business people — that are nearly eliminating some tree species from our forests and orchards.”

(more …)

Whitefly infestation only in Palm Beach County – for now

Topic(s): Agriculture, Crops, Economics, Entomology and Nematology, Environment, Extension, Families and Consumers, IFAS, Pests, RECs

WHITEFLY 052516

GAINESVILLE, Fla. — People in Palm Beach County can help manage a potential outbreak of the Q-biotype whitefly through early detection and identification of the insect, a University of Florida Institute of Food and Agricultural Sciences researcher says.

This significant tropical and subtropical pest may threaten Florida crops such as tomatoes, squash, beans, watermelons and many other vegetables and ornamentals if immediate measures are not taken to prevent its spread. Known scientifically as Bemisia tabaci, the Q-biotype is a light-colored, flying insect slightly less than 1 millimeter in length. Thus far, the Q-biotype whitefly has been reported in all four quadrants of Palm Beach County – north, east, south and west – said Lance Osborne, a UF/IFAS entomology professor.

To find and detect this whitely, residents should first look at hibiscus plants because those are host plants to which this whitefly species will likely gravitate. They should also take a look at their poinsettia plants, Osborne said. There are two types of this whitefly species: Q-biotype and B-biotype, and they look virtually the same, so it’s critical to get a genetic analysis to determine if you have the Q-biotype whitefly.

(more …)

Potential whitefly outbreak threatens Florida landscapes and crops

Topic(s): Agriculture, Crops, Economics, Entomology and Nematology, Environment, Extension, IFAS, Pests, Research

WHITEFLY 052516

GAINESVILLE, Fla. — The Q-biotype whitefly, a significant  tropical and subtropical pest, may threaten Florida crops such as tomatoes, squash, beans, watermelons and many other vegetables and ornamentals if immediate measures are not taken to prevent its spread.

Scientists statewide, including those with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), are working together to control the whitefly which, for the first time, has been found outside greenhouses and nurseries in Florida. Known scientifically as Bemisia tabaci, the Q-biotype or Mediterranean whitefly is a light-colored, flying insect slightly less than 1 millimeter in length.

Researchers with UF/IFAS are working with the U.S. Department of Agriculture, Agricultural Research Service and the Florida Department of Agriculture and Consumer Services to manage the whitefly.

“Unfortunately, we have a developing whitefly issue in Florida,” said Lance Osborne, a faculty member at the UF/IFAS Mid-Florida Research and Education Center in Apopka, Florida. “The situation may be improved with diligent attention to identifying and reporting any outbreaks.”

(more …)

UF/IFAS research-based mosquito repellant recommendations for increased public safety

Topic(s): Entomology and Nematology, Extension, Families and Consumers, IFAS, Pests, Research

GAINESVILLE, Fla. — Homemade do-it-yourself remedies found online and circulated on social media should be regarded with cautious skepticism unless there is UF-based research supporting the product, according to researchers at the University of Florida Institute of Food and Agricultural Sciences.

For example, there is no scientific evidence that eating garlic, vitamins, onions or any other food will make a person less attractive to host-seeking mosquitoes, UF/IFAS experts said.

UF/IFAS conducts research and extension on mosquito repellents, said Ken Gioeli, program Extension agent for natural resources and the environment for UF/IFAS Extension St. Lucie County.

(more …)

Half of South Florida structures at risk of subterranean termite infestation by 2040

Topic(s): Entomology and Nematology, Environment, Extension, IFAS, Pests, RECs, Research

Nan-Yao Su, a professor of entomology with the University of Florida's Institute of Food and Agricultural Sciences, examines a nest of the new Asian termite that is spreading in South Florida -- Friday, April 8, 2004. The pest was found in Key West and Miami a few years ago, and now UF researchers have discovered a well-established population in Riviera Beach, more than 70 miles north of Miami. Su, based at UF’s Fort Lauderdale Research and Education Center, said he is not sure how much farther north the tropical species can move and survive.

GAINESVILLE, Fla. — Figure this: Asian and Formosan subterranean termites cause about $32 billion in damage annually, worldwide, when you combine harm to structures and measures to control them. Now, University of Florida Institute of Food and Agricultural Sciences researchers predict these pests will dramatically increase their impact in the next two decades in South Florida and possibly across the nation.

In fact, UF/IFAS entomologists estimate subterranean termite activity will expand, meaning half the structures in South Florida will be at risk of infestation by subterranean termites by 2040.

Assistant Researcher Thomas Chouvenc, Distinguished Professor Nan-Yao Su and Professor Rudy Scheffrahn will publish their new study in June in the journal Florida Entomologist.

Six invasive termite species are now established in Florida, and among these, the Formosan subterranean termite, the Asian subterranean termite and the West Indian drywood termite pose particular concern for residents and the pest-control industry because they cause most of the structural damage.

(more …)

Ambrosia beetle spreads dangerous avocado pathogen

Topic(s): Agriculture, Crops, Economics, Entomology and Nematology, Environment, Extension, IFAS, Pests, RECs, Research

Jonathan Crane, professor of horticultural sciences, inspecting an avocado tree at the Tropical Research and Education Center.

GAINESVILLE, Fla. — As the laurel wilt pathogen casts a cloud over the $100-million-a-year Florida avocado industry, University of Florida researchers continue to look for clues to prevent the pathogen from spreading.

The main culprit has been the redbay ambrosia beetle, which has infected millions of native redbay and swampbay trees with the laurel wilt pathogen, but it is rarely seen in commercial avocado orchards.

UF/IFAS scientists now know that several other ambrosia beetles are carrying the laurel wilt pathogen; two native ambrosia beetles are capable of carrying it and transmitting the disease to avocados, said Daniel Carrillo, a UF/IFAS assistant professor in tropical fruit entomology.

Scientists at the UF/IFAS Tropical Research and Education Center in Homestead, Florida, are focused on understanding and then disrupting the association between these native beetles and laurel wilt, said Carrillo, a faculty member at the Tropical REC. This spring, Carrillo detected an outbreak of another ambrosia beetle, the Tea Shot Hole Borer, which can spread another disease of avocados known as fusarium wilt.

(more …)

UF/IFAS Bug Week focuses on “Big Money Bugs” that generate economic damages, benefits

Topic(s): Agriculture, Biocontrols, Citrus, Crops, Economics, Entomology and Nematology, Environment, Families and Consumers, Household Pests, IFAS, Invasive Species, Lawn & Garden, Pests
The invasive Asian citrus psyllid.

The invasive Asian citrus psyllid. UF/IFAS photo by Michael Rogers. Click for high-red image.

GAINESVILLE, Fla. — Call them Florida’s “Big Money Bugs” – the insects responsible for the greatest economic damages, costs and benefits that arthropods generate in the Sunshine State.

This year, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) focuses on Big Money Bugs for its annual Bug Week, May 21 to 27. The event offers educational outreach for the public while showcasing UF/IFAS’ entomology and nematology program, one of the nation’s largest and most comprehensive.

Visit the Bug Week website at http://bugs.ufl.edu for more information, including profiles on six of the state’s most economically significant arthropods. Among these species are the destructive Asian citrus psyllid and Formosan subterranean termite, topics of great concern, said Jack Payne, UF senior vice president for agriculture and natural resources.

“In recent years, pest insects have had enormous negative impacts on our state,” Payne said. “Bug Week is the perfect opportunity for UF/IFAS to raise awareness about the challenges these pests bring about, in terms of lost agricultural and natural resources production, management costs, and even human and veterinary healthcare issues, in some instances.”

Species profiled on the Bug Week website include:

*The Asian citrus psyllid, which cost the state’s citrus industry $7.8 billion in total economic contributions from crop losses during the 2006-07 through 2012-13 growing seasons;

*The Formosan subterranean termite, the most destructive widespread termite species in Florida;

*Invasive yellow fever and Asian tiger mosquitoes, which are known to transmit viral diseases in Florida and believed to transmit Zika virus in other countries;

*Beneficial honeybees, which help make Florida the nation’s third-largest honey producer as well as a top source of rental honey bee colonies used to pollinate crops. (more …)

Globally recognized entomologist named interim director of UF/IFAS Indian River REC

Topic(s): Agriculture, Citrus, Cultivars, Entomology and Nematology, Environment, Honors and Appointments, IFAS, RECs, Research, Safety

Cave interim director IRREC 050416

Ron Cave

FORT PIERCE, Fla. — An entomologist recognized internationally as a specialist in biological control of insect pests has been named interim director of the University of Florida Institute of Food and Agricultural Sciences Indian River Research and Education Center.

Ronald Cave will serve as the sixth leader of the Indian River REC.

From the Indian River REC’s 1947 start as the Indian River Field Laboratory, it has served agricultural and natural resources interests with research, Extension and education programs.

Cave was appointed to his new position by Jack Payne, UF senior vice president of agriculture and natural resources.

“In this challenging time for the citrus industry and for other agricultural commodities, we cannot afford a leadership gap even for a few months,” Payne said. “Ron Cave is the right leader for this transition because of his accomplishments as a scientist, his dedication as a mentor and his familiarity with the center. It’s this combination of excellence and stability that makes him an ideal choice for this important role.”

(more …)

UF/IFAS scientist: Pinellas County a model for mosquito-borne disease surveillance

Topic(s): Entomology and Nematology, Extension, Families and Consumers, IFAS, Pests

Mosquito surveillance 042016 - Jonanthan Day

Jonathan Day

GAINESVILLE, Fla. — As we inch closer to summer and its inevitable rain, we also head toward mosquito egg-laying season. And as we do, Florida mosquito control officials may learn to emulate Pinellas County’s mosquito-borne disease surveillance program and its response to a West Nile virus outbreak in 2005, a University of Florida entomologist says.

“They have a top-notch mosquito surveillance program in Pinellas County,” said Professor Jonathan Day, a faculty member at the Florida Medical Entomology Laboratory, part of the UF Institute of Food and Agricultural Sciences. “That’s the model that we always go back to. They averted a much larger West Nile epidemic in 2005.”

Day will speak April 26 at the Southwest Regional Workshop on Arboviral Surveillance in Lehigh Acres, Florida. The workshop is organized by the Florida Mosquito Control Association and FMEL, and participants will analyze the 2011 and 2015 South Florida surveillance data regarding mosquito-borne viruses.

(more …)

Mosquito may play key role in transmitting Eastern equine encephalitis in the Southeast

Topic(s): Entomology and Nematology, Families and Consumers, IFAS, RECs, Research

EEE - mosquito species - photo of Culex_erraticus_female_courtesy of Burkett-Cadena 040716

See caption below article

GAINESVILLE, Fla. — A mosquito species that’s very abundant in the Southeast may play a more significant role in transmitting Eastern equine encephalitis than originally thought, according to a University of Florida scientist.

Nathan Burkett-Cadena, an assistant professor of entomology at the UF Institute of Food and Agricultural Sciences, helped investigate the role of the mosquito species known as Culex erraticus and Culista melanura, the latter of which is most commonly associated with spreading the potentially lethal virus.

“Our study shows us how a mosquito that is a relatively poor transmitter of the virus can actually have a huge impact on human health, due to its overwhelming abundance,” Burkett-Cadena said.

The study, published recently online in the Journal of Medical Entomology, was led by Thomas Unnasch, distinguished professor of global health at the University of South Florida.

(more …)

Back to Top