A tick idea worth trying
11 years ago
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- 11 years agolast modified: 11 years ago
- 11 years agolast modified: 11 years ago
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Comments (41)USDA Studies: Ivermectin for Tick Control http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8667385&dopt=Abstract Knipling-Bushland U.S. Livestock Insects Research Laboratory, USDA-ARS, Kerrville, TX 78028-9184, USA. Whole-kernel corn was treated with 10 mg ivermectin per 0.45 kg corn and fed at rate of approximately .45 kg/deer per day to white-tailed deer confined in the treatment pasture, whereas deer in an adjacent control pasture received a similar ration of untreated corn. Treatments were dispensed from February through September of 1992 and 1993, and free-living populations of lone star ticks. Amblyomma americanum (L.), were monitored in both pastures using dry-ice traps to quantify nymphs and adults and flip-cloths to assay the relative abundance of larval masses. Control values that were calculated for all ticks collected in both pastures during 1993 showed 83.4% fewer adults, 92.4% fewer nymphs and 100.0% fewer larval masses in the treatment versus control pasture. Serum ivermectin concentrations in treated deer averaged 21.7 and 28.3 ppb during 1992 and 1993, respectively. These values compared favorably with the goal concentration of 30.0 ppb which was anticipated under ideal conditions. This study demonstrates that a freely consumed, systemically active acaricidal bait ingested by white-tailed deer under nearly wild conditions can significantly reduce the abundance of all stages of free-living lone star ticks. http://www.ars.usda.gov/research/publications/publications.htm?SEQ_NO_115=115671 The effectiveness of the endectocide, ivermectin administered daily to cattle infested with all life stages of B. microplus was evaluated. Cattle were treated at dose rates of 25 and 50 mcg of ivermectin per kg of body weight for a period of 21 days. While both ivermectin treatment doses were highly effective (>99% control), the 50 mcg/kg/d dose was more effective than the 25 mcg/kg/d dose against all life stages of the tick. The presence of ivermectin in the blood of the cattle caused high mortality in the ticks, as well as producing dramatic adverse effects in the reproductive capability of the ticks that were able to survive and detach from the cattle. Based on the results of this study, the potential for use of ivermectin and other acaricides with similar chemistries is encouraging. The use of these types of acaricides applied by different delivery systems, such as long-term boluses or medicated feed systems has great promise for future applicability in the Boophilus eradication program.... ...overall control achieved at both doses of ivermectin was >99% against all parasitic stages, the 50 mcg/kg/d dose was more effective (P http://www.afpmb.org/pubs/misc/researchreview2004/4b-Pound.ppt http://live.psu.edu/story/19217 Deer-free areas may be haven for ticks, disease Wednesday, August 30, 2006 -------------------------------------------------------------------------------- University Park, Pa. -- Excluding deer could be a counterproductive strategy for controlling tick-borne infections, because the absence of deer from small areas may lead to an increase in ticks, rapidly turning the area into a potential disease hotspot, according to a team of U.S. and Italian researchers. "Deer are referred to as dilution hosts or dead-end hosts," says Sarah Perkins, a postdoctoral researcher at Penn Stateâs Center for Infectious Disease Dynamics. "They get bitten by ticks but never get infected with tick-borne pathogens, such as the bacteria causing Lyme disease." However, deer are critical to adult female ticks in the last stages of their three-part lifecycle. Ticks use them for a final blood meal before dropping off to produce thousands of eggs, Perkins explains. Currently, health officials believe that removing deer from the equation could disrupt the tick lifecycle and leave fewer ticks to feed on rodents, which, unlike deer, can transfer a range of tick-borne pathogens. Ultimately the tick-borne disease will fade out. However, previous field studies show that removing deer sometimes leads to higher tick densities and sometimes lower, and the outcome seems dependent on the size of area from which deer are excluded. "Very few studies have looked at how removing the deer affects the intensity of tick bites on rodents, and how it relates to the size of the area from where the deer are excluded," explains Perkins, whose findings are published in the current issue of the journal Ecology. Researchers first collected data from published information on tick densities in deer excluded areas ranging in size from roughly 2.5 acres to 18 acres. Next, over a six-month period, they captured rodents from a 2.5-acre deer excluded area in the Italian Alps in a known hotspot for tick-borne encephalitis -- a disease passed to humans through the bite of an infected tick. "From previous studies we found that tick densities decreased in (geographically) large areas and increased dramatically in smaller areas," suggesting that there is a threshold area - from where deer are excluded - for tick populations to either increase or decrease, notes the Penn State researcher. Statistical analyses of ticks on the captured rodents indicated that compared to the control areas, the deer-excluded areas hosted a significantly higher number of nymph and adult female ticks, as well as a high prevalence of tick-borne encephalitis. Because tick-borne encephalitis is transmitted only between ticks feeding on these rodents, the findings suggest how small deer-free areas could quickly turn into a disease hotspot. "This goes somewhat against conventional wisdom. When you remove deer, it does not always reduce the tick population," says Perkins. "If you were to exclude deer from hundreds of acres, tick numbers will fall. But in an area less than 2.5 acres, you are more likely to increase tick density and probably create tick-borne hotspots." Researchers say the study demonstrates how the strategy of keeping deer away may work only for large areas but is likely to amplify tick populations in smaller areas. Fragmented patches of forest and small parks that are off-limits to deer could also turn into a disease reservoir, they caution. "We need to be cautious about keeping deer away from small areas, even peopleâs backyards, as it might only lead to more ticks that are infected with tick-borne pathogens," says Perkins. She adds that forest areas deer consistently avoid also have the potential of turning into a haven for tick-borne disease. Other authors of the paper include Isabella M. Cattadori, postdoctoral scholar, and Peter J. Hudson, the Willaman Professor of Biology, both at Penn State University, and Valentina Tagliapietra and Annapaola P. Rizzoli, Centro di Ecologia Alpina, Italy. A grant from the Autonomous Province of Trento, Italy, supported this work. The Penn State Center for Infectious Disease Dynamics is at http://www.cidd.psu.edu/. Contact Amit Avasthi axa47@psu.edu http://live.psu.edu 814-865-9481 Contact Vicki Fong vfong@psu.edu http://live.psu.edu 814-865-9481 The Pennsylvania State University © 2006 http://www.wildlifeprotein.com/index.cfm/fa/categories.main/parentcat/16705...See MoreTicks,ticks,ticks!
Comments (37)To quote the sage advice of the Springfield, MO band, "Big Smith": "If we didn't have those bugs attachin', we'd never know the joy of scratchin'" :) My job requires me to be miles in the wildnerness all day, nearly every day, all summer long. So, I just CAN'T use the poisons because I'd constantly be bathing in them. We just duct tape the bottom of our pant legs to our hiking boots, tuck in our shirts, and keep a roll of duct tape handy for seed ticks. Otherwise, we just enjoy the glorious feeling that comes from scratching those bites! Makes us know that it's truly summertime! Generally, we have between 1 and 1000 ticks on us by the time we get home, but we're happy and tired and know we're ALIVE! I know, I know, this isn't really helpful advice to most. But really, aside from the slim chance of a disease, there's really a lot of psychology involved in the desire to be rid of the "pests". Also, FWIW, I've heard that a tick must be attached 6-12 hours before a disease can be transmitted, presumably because the tick must be filled with some blood to have it sqeezed/regurgitated back into your body during removal. So, if you just keep up with picking them off.......See MoreReally Really Deep Shade - worth trying to grow anything here?
Comments (24)I know this is old but if your still looking for the right thing to plant You might try hydrangas, tiny Japanese maple, a garden sculpture made of chicken wire with succulants, gardinas, cammillias and there is a beautiful Japanese holly that has sort of purpley leaves and berries (sorry not sure of the name) that might also work, there were some great ideas on this tread so hopefully something will work, I also have an entire back yard very shady some intense shade and some filtered, just b sure you have the soil amended and water and fertilize correctly, because I have figured out that that can go along ways in getting a plant that might not work in certain spots to cooperate with you and be happy...See MoreWould it be worth trying to save?
Comments (18)I took a closer look at the pictures I took when we were allowed back in. I'm really afraid the frame got wet. The water line runs across the back and down the side (under the arm) about 18-24" up from the floor. I really wish I had set up a go-pro or something to film this. I'll bet that was an awesome sight seeing that much water cascading down the stairs. @ninigret My argument on this is we've had to do so much work to repair and mold prevent that I don't want to risk reinfecting the house by bringing in potentially moldy furniture. I was sensitive to mold before, but it is worse now after cleaning everything up. And just what was in the air for months. @suezbell I'm not big on the idea of trading old problems off for new ones. Any sort of local resale shop is probably going to have some water damaged furniture in it. There were pickers coming through the streets taking stuff out of our piles. Even the stuff we were trying to dry out wasn't safe on the driveway.I appreciate everyone's help....See More- 11 years ago
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