3/20/2024 0 Comments Tick identification chart nh![]() ![]() Thus, additional, more discriminate methods of control should be explored to supplement conventional practices. However, conventional methods, such as area-wide broadcast applications, present management concerns, including logistical and economic hurdles, the indiscriminate targeting of non-target organisms, such as pollinators, and the accelerated development of insecticidal resistance. Vector control is regarded as one of the more promising means for reducing human tick bites and preventing pathogen transmission. Ticks and wildlife species encompass vector-host relationships of increasing medical and veterinary concern, with many notable tick-borne diseases, such as anaplasmosis, babesiosis, ehrlichiosis and Lyme disease, attracting substantial medical attention. On a global scale, ticks are recognized as one of the main arthropod pathogen vectors of disease agents of humans and animals, and thus are of considerable medical importance. ![]() ![]() Fipronil deer feed may provide a means of controlling multiple tick species parasitizing wild ruminants to be integrated into tick management programs. A field trial is necessary to confirm the efficacy and toxicology of the product in wild deer populations. The results provide proof-of-concept for the use of a fipronil-based oral acaricide in controlling two medically important tick species infesting a key reproductive host. The results of tissue analysis suggest that a withdrawal period may be needed to allow for fipronil degradation prior to hunting season. A significant correlation was observed between reductions in tick survivorship and concentrations of fipronil sulfone in plasma. In the 120-h exposure group there was 100% tick mortality at day 7 post-exposure for both tick species. americanum females exceeded 80% in all instances. scapularis exceeded 90% in all instances except for when ticks parasitized 48-h treated deer at day 21 post-exposure (47.2%). Efficacy in reducing survivorship of blood-feeding female I. The fipronil deer feed efficaciously controlled ticks parasitizing pen-reared white-tailed deer. The concentrations of fipronil in plasma, feces and tissues from euthanized deer were estimated using liquid chromatography-mass spectrometry. Post-attachment, engorgement and mortality of ticks were recorded. On post-exposure day 7 and day 21, all deer were parasitized with 20 mating pairs of feeding capsule-enclosed I. Individually housed deer ( n = 24) were exposed to deer feed containing 0.0025% fipronil (fipronil deer feed) for 48 h and 120 h, and a control group of deer were exposed to an untreated placebo. MethodsĪ pen study was conducted to evaluate the efficacy of a fipronil deer feed in controlling I. No prior studies have evaluated the efficacy of a fipronil product in controlling ticks parasitizing white-tailed deer. scapularis parasitizing the pathogen reservoir, Peromyscus leucopus. ![]() Prior studies have demonstrated considerable efficacy of a low-dose fipronil mouse bait in controlling larval I. Orally administering a systemic acaricide to white-tailed deer has the potential to reduce tick reproduction, abundance and pathogen-infected tick bites. Odocoileus virginianus (the white-tailed deer) is a key reproductive host for medically important tick species, including Ixodes scapularis and Amblyomma americanum. ![]()
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