BIOMAT Database Logo BIOMAT Database Logo

Spotted fever group rickettsiae in immature and adult ticks (Acari: Ixodidae) from a focus of Rocky Mountain spotted fever in Connecticut. 1985

L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell

Immature and adult ixodid ticks were collected during 1983 and 1984 in Newtown, Connecticut, an area endemic for Rocky Mountain spotted fever (RMSF), to determine prevalence of infection by spotted fever group (SFG) rickettsiae. Direct fluorescent-antibody (FA) staining revealed SFG organisms in 6 (1.8%) of 332 Dermacentor variabilis larvae, 5 (7.8%) of 64 D. variabilis nymphs, and in 2 (40%) of 5 Ixodes cookei nymphs removed from small- and medium-sized mammals. Hemolymph tests detected rickettsia-like organisms in 15 (8.8%) of 170 D. variabilis adults; 8 specimens retested by direct FA were negative. In contrast, hemocytes from 5 (8.6%) of 58 Ixodes texanus females contained organisms that stained positively in both hemolymph and direct FA tests. An indirect microimmunofluorescence test identified specific antibodies to Rickettsia rickettsii, the etiologic agent of RMSF, in serum samples from a chipmunk, raccoons, and white-footed mice. Results indicate that immature or adult ticks of at least three species may be involved in the maintenance and transmission of SFG rickettsiae at Newtown.

UI MeSH Term Description Entries
D007814 Larva Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals. Maggots,Tadpoles,Larvae,Maggot,Tadpole
D009758 Nymph The immature stage in the life cycle of those orders of insects characterized by gradual metamorphosis, in which the young resemble the imago in general form of body, including compound eyes and external wings; also the 8-legged stage of mites and ticks that follows the first moult.
D010542 Peromyscus A genus of the subfamily SIGMODONTINAE consisting of 49 species. Two of these are widely used in medical research. They are P. leucopus, or the white-footed mouse, and P. maniculatus, or the deer mouse. Mice, Deer,Mice, White-Footed,Mouse, Deer,Mouse, White-Footed,Deer Mice,Deer Mouse,Mice, White Footed,Mouse, White Footed,White-Footed Mice,White-Footed Mouse
D011821 Raccoons Carnivores of the genus Procyon of the family PROCYONIDAE. Two subgenera and seven species are currently recognized. They range from southern Canada to Panama and are found in several of the Caribbean Islands. Procyon,Procyons,Raccoon
D002642 Chick Embryo The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. Embryo, Chick,Chick Embryos,Embryos, Chick
D003237 Connecticut State bounded on the north by Massachusetts, on the east by Rhode Island, on the south by Long Island Sound, and on the west by New York.
D003870 Dermacentor A widely distributed genus of TICKS, in the family IXODIDAE, including a number that infest humans and other mammals. Several are vectors of diseases such as TULAREMIA; ROCKY MOUNTAIN SPOTTED FEVER; COLORADO TICK FEVER; and ANAPLASMOSIS. Dermacentor andersoni,Rocky Mountain Wood Tick
D004197 Disease Reservoirs Animate or inanimate sources which normally harbor disease-causing organisms and thus serve as potential sources of disease outbreaks. Reservoirs are distinguished from vectors (DISEASE VECTORS) and carriers, which are agents of disease transmission rather than continuing sources of potential disease outbreaks. Humans may serve both as disease reservoirs and carriers. Disease Reservoir,Human Disease Reservoirs,Infectious Disease Reservoir,Reservoirs of Infection,Infectious Disease Reservoirs,Disease Reservoir, Human,Disease Reservoir, Infectious,Disease Reservoirs, Human,Human Disease Reservoir,Infection Reservoir,Infection Reservoirs,Reservoir, Disease,Reservoir, Infectious Disease,Reservoirs, Human Disease
D005260 Female Females
D005455 Fluorescent Antibody Technique Test for tissue antigen using either a direct method, by conjugation of antibody with fluorescent dye (FLUORESCENT ANTIBODY TECHNIQUE, DIRECT) or an indirect method, by formation of antigen-antibody complex which is then labeled with fluorescein-conjugated anti-immunoglobulin antibody (FLUORESCENT ANTIBODY TECHNIQUE, INDIRECT). The tissue is then examined by fluorescence microscopy. Antinuclear Antibody Test, Fluorescent,Coon's Technique,Fluorescent Antinuclear Antibody Test,Fluorescent Protein Tracing,Immunofluorescence Technique,Coon's Technic,Fluorescent Antibody Technic,Immunofluorescence,Immunofluorescence Technic,Antibody Technic, Fluorescent,Antibody Technics, Fluorescent,Antibody Technique, Fluorescent,Antibody Techniques, Fluorescent,Coon Technic,Coon Technique,Coons Technic,Coons Technique,Fluorescent Antibody Technics,Fluorescent Antibody Techniques,Fluorescent Protein Tracings,Immunofluorescence Technics,Immunofluorescence Techniques,Protein Tracing, Fluorescent,Protein Tracings, Fluorescent,Technic, Coon's,Technic, Fluorescent Antibody,Technic, Immunofluorescence,Technics, Fluorescent Antibody,Technics, Immunofluorescence,Technique, Coon's,Technique, Fluorescent Antibody,Technique, Immunofluorescence,Techniques, Fluorescent Antibody,Techniques, Immunofluorescence,Tracing, Fluorescent Protein,Tracings, Fluorescent Protein

Related Publications

L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Prevalence of rickettsia-like organisms and spotted fever group rickettsiae in ticks (Acari: Ixodidae) from Zimbabwe.
November 1995, Journal of medical entomology,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Localization of Coxiella burneti and rickettsiae of the Rocky Mountain spotted fever group in ticks.
June 1972, Acta virologica,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Computer simulation of management strategies for American dog ticks (Acari: Ixodidae) and Rocky Mountain spotted fever.
July 1990, Journal of medical entomology,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Erythrocyte-sensitizing substances from Rickettsiae of the Rocky Mountain spotted fever group.
July 1954, Journal of immunology (Baltimore, Md. : 1950),
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Detection of Novel Spotted Fever Group Rickettsiae (Rickettsiales: Rickettsiaceae) in Ticks (Acari: Ixodidae) in Southwestern China.
May 2021, Journal of medical entomology,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
The occurrence of Spotted Fever Group (SFG) Rickettsiae in Ixodes ricinus ticks (Acari: Ixodidae) in northern Poland.
October 2006, Annals of the New York Academy of Sciences,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Rocky Mountain Spotted Fever in Connecticut: case report.
November 1953, Connecticut state medical journal,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Rickettsiae: a new vaccine for Rocky Mountain spotted fever.
August 1978, Science (New York, N.Y.),
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Spotted fever group Rickettsiae in Ticks from Missouri.
September 2018, Ticks and tick-borne diseases,
L A Magnarelli, and J F Anderson, and W Burgdorfer, and R N Philip, and W A Chappell
Spotted fever group rickettsiae or Borrelia burgdorferi in Ixodes cookei (Ixodidae) in Connecticut.
July 1991, Journal of clinical microbiology,
Copied contents to your clipboard!