Strategies of Rodent Control Methods at Airports (original) (raw)
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Mammalian Hazards at Small Airports in Indiana: Impact of Perimeter Fencing
2008
Fences are used at many airports and small airfields to exclude wildlife from entering critical areas. However, not all fences exclude hazardous mammals reliably, and effective fences can be too expensive for small airports to purchase and maintain. In this study, we evaluated fencing at 10 small airports in Indiana and documented the presence and relative abundance of wildlife within airport boundaries using remote cameras and spotlight surveys. Only 4 airports were completely fenced, and four were <50% fenced. All airports had openings in their fence lines that would allow hazardous wildlife access to the airfields. We encountered either white-tailed deer (Odocoileus virginianus) or coyotes (Canis latrans) at nine of the airports with remote cameras and during spotlight surveys. There were fewer coyotes and white-tailed deer encountered during spotlight surveys at completely-fenced airports ( = 0.40 individuals/km across 8 surveys; SE = 0.24) than were encountered at airports ...
Operations to eradicate non-native invasive predators from islands generally have large conservation benefits, but may put native species at risk where poison bait is used for eradication. Whether the risk of unintentionally poisoning native species can be effectively reduced or mitigated is a critical determinant in deciding the potential utility of an eradication operation. Here, we describe the mitigation measures adopted for an endemic flightless rail species, the Henderson Crake (Zapornia atra), during a rodent eradication operation on Henderson Island, South Pacific, where aerially applied brodifacoum bait was used in 2011. We established a secure temporary in situ captive population of 108 birds, of which 22 individuals died due to initial complications in accepting artificial food. We used point counts and radio-tracking to estimate the effects of the eradication operation on the wild population of Henderson Crakes, and found the expected high mortality (83-97%) due to primary poisoning. Despite this mortality, the Henderson Crake population recovered from very low levels in 2011 (9 birds at 25 point count locations) to 2015 numbers similar to those in the 1980s and 1990s (228 birds at 25 point count locations), despite the eradication operation failing to remove all rats from Henderson Island. The recovery of the natural population was supplemented by 89 individuals released from temporary captivity 2-3 months after the eradication attempt. We conclude that, despite the high mortality of Henderson Crakes during the eradication attempt, the mitigation measures taken to safeguard this endemic species were effective and contributed to the rapid recovery of the species following the eradication operation.
Effects of physical barriers and eradication on recolonization of rodents in poultry farms
International Journal of Pest Management, 2018
Mus musculus, Rattus rattus and Rattus norvegicus are pests in poultry farms, causing economic losses and transmitting diseases. Control is commonly conducted through anticoagulant rodenticides, but this control is not effective through time. We aimed to assess the effect of rodent exclosure on long-term success of rodent control in poultry farms of the pampean region, Argentina, and to evaluate indirect estimators of rodent abundance. In both exclosure and non-exclosure sheds rodent abundance decreased significantly after eradication but mice populations showed a recovery, suggesting that the eradication was not complete. Rats did not recover, but the low abundance found at the beginning of the experiment does not allow an accurate conclusion.
RODENT EXCLUSION TECHNIQUES: A Training Guide for National Park Service Employees
1997
This is a tough, outdoor caulking that mice have been seen to gnaw on but not penetrate. This material requires mineral spirits for clean up and thinning. It stays flexible between expanding and contracting surfaces; resists oil, grease, salt, and heavy traffic; and sets up tack-free in about 30minutes. Color selection is limited. Roof Cement (in caulking tubes) This material is softer and thinner than canned roofing cement and easier to apply. The best types contains fiber. Roof Cement (in cans) This material is waterproof and pasty. It sticks to nearly everything it touches as long as the items are dry and not dusty. It is available in 1 and 5-gallon sized cans. This is good material for cementing around chimney flashings and caps because it expands and contracts with changing temperatures. Roof cement lasts twice as long as mortar when applied to clean and dry surfaces and it is relatively inexpensive, compared to other types of adhesives. Epoxy and Fiber Glass Resins They can be used as caulking and hole-filling material. These materials are available from auto and boat repair supply sources; many formulations harden quickly and are very durable, weatherresistant, and rodent-proof. NPS Rodent Exclusion Manual-40 MORTAR/CEMENT Cement and Mortar Although these materials are excellent barriers to wildlife, they are not practical in most situations because they harden so slowly and require considerable time to mix and clean up. Cement/Concrete These materials are good for larger jobs (steps, sidewalks, tuck pointed foundations, chimneys, and barriers around slabs and sidewalks). The best mixes for cement are 1 part cement to 3 parts sand or richer. For concrete, use 1 part cement to 2 to 4 parts sand or richer. Cement Mortar This is a mixture of several materials and is designed to be an elastic spacer for ceramics (bricks). Cement mortar it is not as hard as cement, weathers faster, is not a substitute for cement, and not generally recommended for rodent exclusion. If mortar must be used, use a 1:3 mixture or richer. Cement Patching Powder This material has similar physical characteristics to cement. Is available in small-sized containers and is easier to mix. Most brands harden in less than 4 hours and provide good to moderate rodent exclusion. WOOD Even wooden patches on holes can effectively repel most smaller rodents if there are no gnawing edges (butts, joints, holes, or other surface breaks) where rodents can begin gnawing. Use the smoothest and best grades of wood available. Pest Control and Pest Control Technology. 1982 through 1994. Two pest control trade magazines having frequent articles on rodents and rodent-proofing. National Pest Control Association and GIE Publishers, 4012 Bridge Ave., Cleveland OH 44113.
Ecologically-Based Rodent Management
The Journal of Wildlife Management, 2001
Digging, t rap ping, f looding, netti ng, rat drives and physic al barriers are t he norm fo r ro dent control in rice fi elds in most developi ng countries. We provid e a bri ef overvi ew of phys ical methods of contro l ai med at reducing pre-h arvest damage by rodents, then cons ider in detai l the use of trap-barrier system s. An important cata lyst for adopti on of ph ysic al co ntro l in Southeast Asi a is th e use of bounti es fo r each rat captured. In Aust ra li a, uses of bounti es to cont rol verteb rate pests have been si ngularl y unsuccessful. Differing socioeco nomics an d more inte nse trappi ng may provi de better results in develop ing countries. The re is a scarcity of good dat a to assess whet he r bounties based on physic al act ions of co ntrol are effective. In contrast, experimental field studi es support the strategic use of trap-ba rrier systems (TBS) using early crops ('trap crops ') as a lure to rodents. Experimental studies in West Java , Indonesi a, and the Mekong and Red River De ltas of Vietna m, indicate th at TBS plus trap crops (TBS+ TC) are cost-effective in most seasons. Yield increases of up to 1 t/ha have been recorded up to 200 m from a TB S+ TC. The need to invest money into traps and fences, which protect neighbouring crops , requires a community-based approach for rodent management. An untested reco mmendation is that one TBS+ TC (25 x 25 m) would be sufficient for every 15 ha of rice crop. Although we require more detailed knowledge of the population ecology and biology of rodent pest species , what we already know has had an important influence on the development of management strategies incorporating physical methods.
Surveillance Strategies of Rodents in Agroecosystems, Forestry and Urban Environments
Sustainability
Rodents belong to the group of occasionally economically significant to very significant pests. Some species, especially synanthropic species, cause material damage in various ways. Successful and sustainable management of rodent control strategies requires different procedures such as prevention and rodent control measures. The present study gives an overview of the most common rodent species and methods for estimating the rodent population to assess the risk of economic damage that may occur due to rodents feeding in field crops, gardens, orchards, and young forest plantations, as well as contamination of stored food. As a prerequisite for effective integrated control of mice and voles, it is necessary to implement an adequate long-term monitoring system of these species, as they are primary pests. The integrated approach improves the treatment efficacy and reduces the treatment costs but also is considered ecologically friendlier compared to conventional measures. An integrated a...