Interactions between sympatric invasive European fire ants ( Myrmica rubra ) and blacklegged ticks ( Ixodes scapularis )

by Lucy D. Guarnieri, Sara E. McBride, Eleanor Groden, Allison M. Gardner The blacklegged tick (Ixodes scapularis) and the invasive European fire ant (Myrmica rubra) are both expanding throughout their sympatric range in coastal New England.Ixodes scapularis is the primary vector of the bacteriumBorrelia burgdorferi, which is the causative agent of Lyme disease, and Mount Desert Island, Maine, home to Acadia National Park, currently is affected by a high Lyme disease burden. Ticks have many natural predators, including ants, although no previous studies have investigated interactions between these two species. To test the hypothesis that the presence ofM.rubra altersI.scapularis abundance, we collected ticks by drag-sampling at eight ant-infested sites and eight uninfested control sites in Acadia National Park. We found that nymph density was significantly higher at ant-infested sites, while larval density was significantly higher at control sites. In addition, we conducted a laboratory bioassay to measureM.rubra aggression againstI.scapularis larvae, nymphs, and adults andDermacentor variabilis adults, and found that ant aggression was significantly higher againstD.variabilis adults thanI.scapularis adults. Our findings support the hypothesis thatM.rubra has divergent effects acrossI.scapularis life stages, and we discuss possible ecological mechanisms, including optimal microclimate and predation, that could promote density of nymphs while inhibiting density of larvae.
Source: PLoS One - Category: Biomedical Science Authors: Source Type: research

Related Links:

Source: Journal of Neurology - Category: Neurology Source Type: research
A number of tick-borne pathogens circulate in the Belgian tick population in addition to the causative agent of Lyme borreliosis. However, so far, only a few patients with tick-borne diseases other than Lyme b...
Source: Parasites and Vectors - Category: Microbiology Authors: Tags: Research Source Type: research
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Source Type: research
CONCLUSIONS: Clinical and topical variants and forms of EF in children are associated with etiology, have different rates of complications, the nature of the course and outcomes, the knowledge of which makes it possible to optimize the diagnostic process.PMID:35038852 | DOI:10.17116/jnevro202112111286
Source: Herpes - Category: Infectious Diseases Authors: Source Type: research
Vaccine. 2022 Jan 13:S0264-410X(22)00006-8. doi: 10.1016/j.vaccine.2022.01.003. Online ahead of print.ABSTRACTVaccination guidelines for dogs and cats indicate that core vaccines (for dogs, rabies, distemper, adenovirus, parvovirus; for cats, feline parvovirus, herpes virus-1, calicivirus) are essential to maintain health, and that non-core vaccines be administered according to a clinician's assessment of a pet's risk of exposure and susceptibility to infection. A reliance on individual risk assessment introduces the potential for between-practice inconsistencies in non-core vaccine recommendations. A study was initiated t...
Source: Herpes - Category: Infectious Diseases Authors: Source Type: research
Conclusion: This systematic review, including all reported cases and our case report, supports evidence of ocular infection ofBorrelia species. Furthermore, in case of suspicion of infection and seronegativity, it is justified to look forBorrelia in eye tissue samples. In addition, microscopy without using PCR is not sufficient to confirm the diagnosis of borreliosis on ocular tissue. In the articles studied, there was no unambiguous recommendation of treatment.Ophthalmic Res
Source: Ophthalmic Research - Category: Opthalmology Source Type: research
Psychol Med. 2022 Jan 11:1-2. doi: 10.1017/S0033291721005481. Online ahead of print.ABSTRACTAfter reading an article in the journal, regarding affective disorders in patients with rare illnesses, the authors would like to discuss a case of non-affective psychosis, presenting with olfactory reference and Truman symptoms, in a patient with three unusual conditions: Gilbert disease, Hughes syndrome and Lyme neuroborreliosis.PMID:35012695 | DOI:10.1017/S0033291721005481
Source: Psychological Medicine - Category: Psychiatry Authors: Source Type: research
Neurol Sci. 2022 Jan 10. doi: 10.1007/s10072-022-05865-8. Online ahead of print.ABSTRACTA 35-year-old Caucasian woman presented an abrupt onset of bilateral impaired vision, and arrived to our attention two weeks later. She had a previous episode of mild dizziness. She underwent a fluorescein angiography showing branch retinal artery occlusions and a brain magnetic resonance imaging (MRI) revealing several supraand infratentorial FLAIR-hyperintense white matter lesions, two with contrast enhancement. Thrombophilic, autoimmune and infective (including Human Immunodeficiency Virus, Borrelia burgdorferi, Hepatitis B Virus, He...
Source: Herpes - Category: Infectious Diseases Authors: Source Type: research
Br J Dermatol. 2022 Jan 6. doi: 10.1111/bjd.20977. Online ahead of print.NO ABSTRACTPMID:34990013 | DOI:10.1111/bjd.20977
Source: The British Journal of Dermatology - Category: Dermatology Authors: Source Type: research
This study identified and utilized isolates deficient in PFam54 to associate the defects with the absence of these proteins, building the foundation to further study the role of each PFam54 protein in contributing to Bbsl pathogenesis. Importance To establish infections, Lyme borreliae utilize various means to overcome the host's immune system. Proteins encoded by the PFam54 gene array play a role for spirochete survival in vitro and in vivo. Moreover, this gene array has been described in all currently available Lyme borreliae genomes. By investigating the first two Borrelia bavariensis isolates naturally lacking the enti...
Source: Applied and Environmental Microbiology - Category: Microbiology Authors: Source Type: research
More News: Biomedical Science | Laboratory Medicine | Lyme Disease | Study