The warmer weather has people and our animals headed outdoors. Unfortunately, this same weather has also brought ticks out in abundance. Recent reports from the Centers for Disease Control and Prevention (CDC) have cited increased numbers of ticks, and tick-borne diseases. UConn’s Connecticut Veterinary Medical Diagnostic Laboratory (CVMDL), part of the Department of Pathobiology in the College of Agriculture, Health and Natural Resources, is on the frontlines of research and tick testing to keep humans and animals safe.
Ticks are disease-carrying arachnids that reside in moist areas, long grass and the leaf litter and will latch onto humans and animals alike. Although there are many different species of ticks, people generally think of one tick species in particular when worrying about illness: the deer tick (Ixodes scapularis). While the Deer tick is predominantly known for transmitting Lyme disease (caused by the corkscrew-shaped bacterium, Borrelia burgdorferi) it can also carry other disease-causing agents. A single tick can transmit more than one infectious agent.
In the Northeast, we see the Deer tick, the Dog tick (Dermacentor variablis), Brown Dog tick (Rhiphcephalus sanguineus) and Lonestar tick (Amblyomma americanum). Each of these can be tested for different pathogens known to cause illness in humans and/or animals.
Tick testing at CVMDL serves multiple purposes. It helps the person or veterinarian who submitted the tick understand the potential exposure of the subject that the tick was found on. Our researchers are also using the results from tick testing to track current and emerging disease producing agents carried by ticks. The data can be used in setting priority areas for prevention and vaccine development.
CVMDL has been busy testing ticks this spring. We received 33 ticks for testing in April. Of these specimens, 25 of them were received in the last two weeks of the month. Two of the ticks were found on dogs. Overaal, the results showed that the Lyme disease agent was detected in 8 specimens, B. burgdorferi and Babesia microti (Babesiosis) were detected in one specimen whereas 4 ticks were positive for both B. burgdorferiand Anaplasma phagocytophilum(Anaplasmosis).
UConn researchers are not just testing for diseases transmitted by ticks. Researchers at PVS are also working to develop vaccines and preventative control measures to combat tick-borne illnesses.
If you find a tick on yourself, your child, or your pet, remove it immediately! CVMDL can test the tick for pathogens. Ticks received at the CVMDL are first examined under a microscope by trained technicians to determine the species of tick, life stage, and degree of blood engorgement, all of which are factors that may impact transmission of pathogens to the person or animal. Ticks may then be tested for the DNA of pathogens that are common to that tick species. Results are normally reported within 3-5 business days of receiving the sample, but next day testing is available for an additional fee.
Please send ticks together with a small square of moist paper towel, in sealed zip lock bags. The submission form, pricing and the “Do’s and Don’ts of tick testing” can be found on our website at http://s.uconn.edu/468.
For more information, read the article from UConn Magazinethat includes tips to prevent tick bites, or watch the UConn Science in Seconds video. You can also contact the Connecticut Veterinary Medical Diagnostic Laboratory at firstname.lastname@example.org or 860-486-3738 or visit the tick testing page on our website http://cvmdl.uconn.edu/service/tick.php.
The Governor’s Greenways Council on Friday commended eight individuals, and a volunteer committee of the Last Green Valley, that have made significant contributions to the promotion, development and enhancement of Greenways – linear open space in Connecticut – and designated three new State greenways at a ceremony at the Nathan Lester House, in Ledyard.
Gypsy moths (also known as the North American Gypsy Moth or the European Gypsy Moth) were imported to North America from Eurasia in 1869 for a silk production experiment. They have caused periodic defoliations in New England since then and particularly severe defoliations in the early 1980s and again in Connecticut and Massachusetts in 2016 and 2017. (Gypsy moths do not build webs – the webs you see in cherry trees are tent caterpillars.)
Female moths lay between 500 and 1,000 eggs that overwinter until spring when they hatch. Eggs are usually found underneath the bark scales of trees, on trunks, branches or other protected sites. Eggs last for 8-9 months before they hatch. Adults only live for about one week while they mate and lay eggs. Gypsy moth populations can persist with very low numbers for years but under the right conditions can have outbreak years where populations explode.
The caterpillars feed on leaves of most deciduous trees and many conifers as well. After feeding for some time they descend to the ground by means of silk threads to change size (molt). Silk threads and numerous hairs on the bodies of small, early-instar (stage) caterpillars allow them to be spread by the wind. These caterpillars change size three times before entering the pupal stage and maturity.
Gypsy moths only damage trees during the larval (caterpillar) stage when they are feeding on the leaves, and leaf-feeding and defoliation is the only type of damage they do. In high numbers they can completely defoliate the trees. One gypsy moth caterpillar can eat as much as eleven square feet of leaf area.
Most deciduous trees have the ability to re-set buds and produce a second set of leaves following defoliation.
Coniferous trees do not have this ability. Multiple defoliations can be problematic for the trees. Gypsy moth caterpillars will feed on most tree and shrub species (500 total species!) but prefer oak and beech. Tulip trees (yellow poplar) are not affected. Pines and hemlocks are likely to die after one defoliation.
Multiple defoliations combined with drought are causing individual tree and stand-level mortality in some areas. Trees that have not “leafed-out” in 2018 can be seen in numerous locations around the state. In some places, large individual roadside trees and trees near structures that have died present potential future safety hazards. In forest stands on state and private forest lands, sufficient oak mortality can be observed to warrant consideration of forest harvesting activities to salvage timber value. Private woodland owners are well advised to consult with a CT-Certified Forester to evaluate their woodland conditions. (Links provided below.)
Since the 1980s, a fungus from Japan, Entomophaga maimaiga, has been keeping gypsy moth populations under control but during dry conditions the fungus is less active. Gypsy moth populations seem to explode when there are dry conditions during the spring and summer months.
Natural controls include:
- Birds (limited effectiveness, small instars only)
- Vertebrates (deer mice and shrews)
- Invertebrates (ants and ground beetles, parasitic flies and wasps)
- Viral Disease Wilt
- Pathogens like Entomophaga maimaiga fungus
There are a few management tools available:
- Bacteria-based treatments exists.
- Soapy water sprays (horticulture soap/oils mixed with water).
- Traps to catch adults.
- Finding and destroying egg masses (too late for 2018).
Pesticides are not commonly used because of chemical toxicity and are impractical for entire forests. If used for an individual tree be sure to read the label.
On the UConn campus in Storrs the arborist crew will spray some campus trees using bio-based spray. Trees that don’t leaf out will be removed. Some salvage of dead trees in the UConn Forest will take place as appropriate for fuel wood and saw logs. Inspections will be done in early summer.
A Certified Forester should be consulted for stand-level management and a licensed arborist for individual trees near homes and buildings. More information is available from the Department of Energy and Environmental Protection: http://www.ct.gov/deep/cwp/view.asp?a=2697&q=589362&deepNav_GID=163 and the Connecticut Agricultural Experiment Station; http://www.ct.gov/caes/site/default.asp .
To find an arborist link to the CT Tree Protective Association, www.ctpa.org.
Article by Tom Worthley
Another winter has finally ended, and messy roads and salty cars are quickly becoming a distant memory. Where did all that salt go? The millions of tons of deicing salts that get applied to our roads either wash off into local streams, or move into the local groundwater. Yet another research study has recently come out documenting the harmful effects this salt is having in the environment (see UConn Today article). Salt impacts aquatic life in streams, vegetation, and drinking water wells, creating a human health concern. Unfortunately there is no good cost-effective alternative available at this point.
Faced with this situation, New Hampshire decided to attack this problem at the source: reduce how much salt is being applied to the landscape. The Green SnowPro certification program provides municipal public works staff and private contractors with training on how to more efficiently apply deicing salts while still keeping the roads safe for travel. Information is provided on how salt actually works, what the impacts are on the environment, how to calibrate equipment, how much salt to apply given the weather conditions, and how to use anti-icing strategies. Another benefit of the program is that businesses who hire certified applicators receive reduced liability from damages arising from snow and ice conditions, creating an incentive for businesses to hire trained contractors. The New Hampshire Department of Environmental Services has reported that the program is helping to reduce salt application across the state.
Given the recent success of the program in New Hampshire, the program is being adapted here in Connecticut. UConn’s Tech Transfer Center has partnered with CT DOT, DEEP, and UConn CLEAR to pilot the program for municipal public works staff. The pilot session will be later this summer- check the T2 website for details. The goal is to expand the program to private contractors, just as New Hampshire has done.
Although our salt problem will not be fixed overnight, programs like this offer the best hope to tackle this very serious problem.
By Mike Dietz
Originally posted on CLEAR.UConn.edu
The Centers for Disease Control and Prevention (CDC) recommends creating a tick-safe zone. Ticks feed on blood of animals including humans. Tactics to reduce the attractiveness of animals traveling into your yard will keep the number of ticks dropping off of them reduced. Do not feed the birds as chipmunks, squirrels and many other animals visit to eat fallen seeds. Remove leaf litter as a hiding place for small animals and ticks. Clear tall grass and brush from edges of turf and around home. Keep lawn mowed. Keep any wood piles dry and neatly stacked to discourage rodents from using it as a home. Do not place patio or play areas near wooded areas where animals and ticks will be living. Use fencing to keep out deer and larger animals from the yard. Create a 3-foot wide barrier of gravel or wood chips between lawns and woods to stop ticks from entering the lawn. Ticks do not like to cross hot, dry expanses.
Chemical control includes the active ingredient bifenthrin or carbaryl or permethrin or pyrethrin. These are best applied when the ticks are in their small nymphal stage during the month of May and early June. See the CT Tick Management Handbook written by the CT Agricultural Experiment Station for much more detailed information.
Written by Carol Quish
Originally posted by UConn Extension in 2014.
Michael Dietz from UConn Extension/CLEAR worked with the Tech Transfer Center at UConn to provide a winter operations training for UConn facilities staff. As a result of the training, salt applications were reduced by 3,600,000 pounds, improving water quality, and saving UConn roughly $200,000. Thanks to the UConn winter operations staff and the Tech Transfer Center for helping to make this happen.
By Judy Benson
Originally posted by Connecticut Sea Grant
Groton – Chris Fowler knows the perils of his occupation as a commercial fisherman, consistently ranked one of nation’s the most dangerous jobs.
So a year after he began catching skate, whiting, squid, flounder and fluke from a vessel docked in New London, he took a day off from fishing to equip himself with the skills he needs to survive an accident at sea.
“This is my first training since I started as a fisherman,” said Fowler, his face wet after a drill that involved getting into an bright orange immersion suit, jumping into 50-degree water off the docks at UConn’s Avery Point campus and climbing onto a four-man life raft.
Fowler was one of 36 commercial fishermen and state agency personnel who took part in a daylong safety and survival training course on May 10 sponsored by Connecticut Sea Grant, Fishing Partnership Support Services, the U.S. Coast Guard and UConn-Avery Point. The training began with classroom lessons on first aid, use of life jackets and opioid awareness. Then the fishermen and agency staff headed to the waterfront for training in firefighting, making emergency vessel repairs, using immersion suits and life rafts and use of flares to signal for help.
The Fishing Partnership, based in Burlington, Mass., provided the Coast Guard-accepted marine safety instructors for the training, several of whom are former commercial fishermen or served in the Coast Guard. On its website, the Fishing Partnership notes that “fishermen are 37 times more likely to die on the job than policemen. And on top of that, New England’s waters are the most dangerous in the country.”
“Fishing is the most dangerous occupation, so our focus is to give hands-on training so they know what equipment to use and how to use it,” said Ed Dennehy, director of safety training for the Fishing Partnership.
Commercial fishermen aren’t required to take safety and survival training courses, he said.
“The only requirement is that they run man overboard, fire, flooding and abandon-ship drills once a month while they’re fishing,” he said.
The National Institute for Occupational Safety and Health, however, recommends fishermen take formal training classes like this one at least every five years. Connecticut Sea Grant has been sponsoring them with various partners about every two years since 2000, and teamed up with the Fishing Partnership in 2016, said Nancy Balcom, associate director of Sea Grant and lead organizer of the training.
“There’s always turnover in the industry, and they need refresher courses,” Balcom said. “This is one of the services we can help facilitate for our fishermen to practice their skills so that if they ever have to act quickly they’ll be prepared.”
About 80 percent of those at the May 10 class were first-timers, Dennehy said, and the rest were getting refresher lessons. Just last February, four fishermen survived the sinking of their vessel off Martha’s Vineyard using skills they had learned in a training course, he said. But two years earlier, he added, another group of New Bedford fishermen died because they were unable to get their immersion suits on in time.
“They should do this training every two to three years,” he said, “because there’s always something you didn’t pick up the first time. Sea Grant has been a really great partner with us on this, and this is an outstanding facility.”
On May 11, 13 fishermen and state agency staff returned to Avery Point for a second day of training to become certified as drill conductors – those who run the monthly on-board safety drills. Michael Theiler, a commercial fisherman out of New London, brought his vessel Emma & Maria across the river to Avery Point for the day so his fellow fishermen could practice their drill conductor skills in an authentic setting.
Fisher Harris, one of the fishermen in the safety and survival training, said the experience was both fun and a sobering reminder of how quickly small accidents can turn into disasters without proper preparation. Harris fishes on the vessel Ad Hoc, which docks in Guilford.
“I’m definitely more confident now that if I ever needed to put out a fire, I could do it,” he said, after learning the most effective way of directing a fire extinguisher onto a blaze.
Judy Benson is the communications coordinator at Connecticut Sea Grant.
By Tom Worthley, UConn Extension
On May 15, 2018, late in the afternoon, a striking example of one of those “severe weather events” we see quite often these days passed through my neighborhood in Higganum. Severe winds, downpours, lightning and thunder all were part of a wicked and deadly storm that ripped limbs from and uprooted trees, downed powerlines and damaged buildings and vehicles in other parts of the state. Images on TV news and social media of damage and cleanup efforts have been striking.
For my part, because of the sudden and severe nature of the winds, and the near-continuous display of lightning, I was as nervous I ever remember being about a storm event and the potential for damage to my humble little house from trees and limbs. Sure enough, one large limb, from the top of a large red oak, did get ripped off and came down about 20 feet from where I park my car. There is, of course, a mess of smaller twigs and branches as well. No real property damage, thank goodness, but it was close. The storm was over a quick as it began, and now, just like many folks around the state, I’m faced with a clean-up task. It’s not a real problem for me; that broken limb is at the edge of the woods and will make a nice neat little pile of firewood.
For many people, however, the task of cleaning up storm-damaged trees is not so straightforward and simple. Many damaged trees are huge and are left in precarious, unstable positions. Storm-damaged trees are fraught with abundant problems, dangers, and risks. Cutting, cleaning up and salvaging downed, partially down or damaged trees is one of the most dangerous and risky activities an individual can undertake.
In viewing the news reports, photos and social media posts I have been shocked and horrified by the personal risks that people are taking to cut up downed trees in cleanup efforts. Pictures of men operating chain saws in shorts and t-shirts, climbing downed tree limbs (and standing on them!) to cut them, working with no personal protective equipment, etc. – it can all be quite distressing for a person familiar with the potential danger. No professional arborist or logger I know does chain saw work without personal protective equipment – and these are the experts!
It cannot be emphasized enough that without personal skill and a thorough knowledge of equipment capabilities, safety procedures and methods for dealing with physically stressed trees, an individual should never undertake this type of work on their own. The very characteristics that make the wood from trees a great structural material can turn leaning, hanging or down trees into dangerous “booby-traps” that spring, snap, and move in mysterious ways when people try to cut them. They can cause serious and life threatening injuries. Just because your neighbor or relative owns a chain saw, it doesn’t make them qualified to tackle a large tree that is uprooted or broken. Contacting a Licensed Arborist, or Certified Forest Practitioner with the right equipment, training, and insurance, is the best alternative for addressing the cleanup and salvage of storm damaged trees, and avoiding potential injury, death, liability and financial loss.
That said, there are a few things a homeowner can do about trees that are damaged and/or causing other damage around a home site:
- First, from a safe distance note the location of any and all downed utility lines. Always assume that downed wires are charged and do not approach them. Notify the utility company of the situation and do nothing further until they have cleared the area.
- Don’t forget to LOOK UP! While you may be fascinated with examining a downed limb, there may be another one hanging up above by a splinter, ready to drop at any time.
- Once you are confident that no electrocution or other physical danger exists, you can visually survey the scene and perhaps document it with written descriptions and photographs. This will be particularly helpful if a property insurance claim is to be filed. Proving auto or structure damage after a downed tree has been removed is easier if a photo record has been made.
- Take steps to flag off the area or otherwise warn people that potential danger exists.
- Remember that even if a downed tree or limb appears stable, it is subject to many unnatural stresses and tensions. If you are not familiar with these conditions, do not attempt to cut the tree or limb yourself. Cutting even small branches can cause pieces to release tension by springing back, or cause weight and balance to shift unexpectedly with the potential for serious injury. Call a professional for assistance.
- Under no circumstances, even in the least potentially dangerous situation, ever operate, or allow anyone on your property to operate a chainsaw without thorough knowledge of safe procedures and proper safety equipment, including, at the minimum, hardhat, leg chaps, eye and hearing protection, steel-toe boots and gloves.
An assessment of the damage to individual trees, or more widespread damage in a forest setting is best undertaken by an individual with professional expertise. Homeowners should contact an Arborist to examine trees in yards or near to structures, roads or power lines. A Certified Forester is qualified to evaluate damage in the forest to trees and stands and advise landowners about the suitability of salvage or cleanup operations. The CT-DEEP Forestry Division can provide information about contacting a Certified Forester or Licensed Arborist. Check the DEEP Website, http://www.ct.gov/deep/cwp/view.asp?a=2697&q=322792&deepNav_GID=1631%20
or call 860-424-3630. Listings of Licensed Arborists can also be found at the CT Tree Protective Association web site, www.CTPA.org.
While a nice tidy pile of firewood from a tree that was damaged in a storm might be the silver lining, it is not worth the risk of injury to yourself or someone else when tackling a very dangerous task without the proper knowledge, equipment or preparation.
By Joan Allen
Originally published by the UConn Home & Garden Education Center
Collection of rain water from roofs using rain barrels is growing in popularity because of its many environmental and practical benefits. It can help the environment by diverting water that might contain contaminants away from storm drains and the natural bodies of water that those empty into. Depletion of well water can be a benefit when this non-potable water is used instead of the tap for things like washing cars, irrigation of plants, and flushing toilets. If you’re on a city/public water system, it can save money to use rain water where you can, too. But is using rain water to irrigate vegetables and fruits safe? Are there contaminants in it that could make people sick? Let’s take a look at what’s been studied.
A few universities in the U.S and abroad have done some work to look at potential contaminants in roof run-off water including heavy metals like zinc, copper, lead and others as well as bacteria such as E. coli and other pathogens. Testing done so far has shown low risk from these, but there is some. And of course, it depends on the type of roofing material, the environment (ie acid rain, urban vs. rural, etc) and possibly other factors. In one study, most of the metals tested the same in rain barrel water as in rain water before it hit the roofs, so little to no concern there. One exception was zinc, and elevated levels could lead to build up of this element in soils. At high enough levels, this can cause injury to plants and those plants should not be consumed (1). Monitor for this by having the soil tested.
While risk appears to be low, there were a few samples in studies (1, 2) where E. coli or total coliform bacterial levels exceeded official standards for some uses. Rain barrel water should NEVER be used for potable purposes such as drinking water, cooking or washing. Where do the bacteria in run-off come from? The main sources would be fecal matter from animals such as squirrels and birds that land and move around on the roof.
But if you’d like to water your vegetable garden with rain barrel water, are there ways to do it safely?
Dr. Mike Dietz, Assistant Extension Educator at UConn with expertise in water management recommends “not using roof water on anything leafy that you are going to eat directly. It would be OK to water soil/plants where there is no direct contact”. This is consistent with recommendations from other experts who suggest applying the water directly to the soil and avoiding contact with above-ground plant parts. An ideal set-up would be to hook up a drip irrigation system to your rain barrel(s). Pressure will be improved when they are full and if they are elevated. A full rain barrel can be pretty heavy, at about 500 lbs. for a 55 gallon unit, so make sure they are on a solid and stable base such as concrete blocks.
If possible, and this is done in larger collection systems automatically, don’t collect the ‘first flush’ of water off the roof. This would be the first few gallons. In a ¼” rainfall as much as 150 gallons can be collected from a 1000 ft2 roof surface (3). The first water to run off tends to have higher concentrations of any contaminants because of them building up on the roof since the previous rainfall event.
Another more practical way to minimize risk of pathogen/bacterial contamination is to treat the collected water with bleach. Rutgers University recommends treating 55 gallons of water by adding one ounce of unscented household chlorine bleach to the barrel once a month (or more often if rain is frequent). Allow this to stand for 24 hours before using the water for irrigation so the bleach can dissipate.
Apply collected water in the morning. Wait until leaves dry in the sun before harvesting. Ultraviolet light from the sun will have some disinfecting effect.
It is recommended to have the rain barrel water tested for E. coli. Be sure to follow the testing lab’s instructions for collection, storage and time sensitivity of the samples.
Thoroughly wash all harvested produce. In addition, you should always thoroughly wash your hands with warm, soapy water after they are in contact with collected water.
In summary, there are risks to using collected rain water for irrigation of food crops. In most cases, the risk appears to be low, and using the above sanitation practices can reduce risk.
- DeBusk, K., W. Hunt, D. Osmond and G. Cope. 2009. Water quality of rooftop runoff: implications for residential water harvesting systems. North Carolina State University Cooperative Extension.
- Bakacs, M., M. Haberland and S. Yergeau. 2017. Rain barrels part IV: testing and applying harvested water to irrigate a vegetable garden. Rutgers New Jersey Agricultural Experiment Station. Fact Sheet FS1218.
- Rainfall as a resource. A resident’s guide to rain barrels in Connecticut. CT DEEP.