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Australian Veterinary Journal Jan 1973
Topics: Animals; Australia; Cat Diseases; Cats; Dipetalonema; Dirofilariasis; Dog Diseases; Dogs; Female; Male; Nematode Infections
PubMed: 4734728
DOI: 10.1111/j.1751-0813.1973.tb14688.x -
Revista Cubana de Medicina Tropical 1984
Comparative Study
Topics: Animals; Azure Stains; Dipetalonema; Dipetalonema Infections; Dirofilaria immitis; Dirofilariasis; Dog Diseases; Dogs; Filarioidea; Microfilariae; Species Specificity; Zoonoses
PubMed: 6399596
DOI: No ID Found -
The Journal of Parasitology Apr 1974
Dipetalonema viteae in the experimentally infected jird, Meriones unguiculatus. I. Insemination, development from egg to microfilaria, reinsemination, and longevity of mated and unmated worms.
Topics: Animals; Dipetalonema; Female; Fertilization; Gerbillinae; Insemination; Larva; Longevity; Male; Nematode Infections; Ovum; Sex Factors; Spermatozoa; Ticks; Time Factors
PubMed: 4856592
DOI: No ID Found -
The Journal of Parasitology Dec 1974
Topics: Animals; Blood; Colombia; Dipetalonema; Female; Filarioidea; Haplorhini; Male
PubMed: 4215876
DOI: No ID Found -
Boletin Chileno de Parasitologia 1970
Topics: Animals; Dipetalonema; Dog Diseases; Dogs; Filariasis; Male
PubMed: 5529646
DOI: No ID Found -
Infection and Immunity Jun 1986Jirds with prepatent Dipetalonema viteae infections develop an acquired immunity to challenge infections. The objective of the present study was to observe...
Jirds with prepatent Dipetalonema viteae infections develop an acquired immunity to challenge infections. The objective of the present study was to observe parasite-specific and nonspecific cellular and humoral immune responses in immune jirds. Splenic hyperplasia was observed in infected jirds during the first 5 weeks of infection. Antigen-reactive spleen cells were observed in the lymphocyte transformation assay at 3 weeks postinfection. A depressed response to concanavalin A (ConA) was seen at 1 week postinfection through week 5. Mitomycin C-treated cells from infected jirds were capable of suppressing the response of normal cells to ConA. Sephadex G-10-nonadherent spleen cells from infected jirds showed elevated responses to D. viteae antigen at 1, 3, and 5 weeks and elevated responses to ConA at 3 and 5 weeks. Filaria-specific antibodies were seen at 1 week postinfection, and titers rose through week 5. Plaque-forming cell production to sheep erythrocytes was not depressed in infected jirds. It was concluded that jirds react immunologically with both cellular and humoral responses during the prepatent period of D. viteae infection. A concurrent immune depression was seen. Its effect on resistance and tolerance remains to be determined.
Topics: Animals; Antibody Formation; Antigens, Helminth; Dipetalonema; Dipetalonema Infections; Filariasis; Gerbillinae; Immunity, Cellular; Lymphocyte Activation; Male; Spleen; Splenomegaly
PubMed: 3710584
DOI: 10.1128/iai.52.3.742-747.1986 -
Journal of Helminthology Sep 1994This paper reports the development of the canid filarial worm, Dipetalonema dracunculoides, in the brown dog tick, Rhipicephalus sanguineus by determining whether... (Comparative Study)
Comparative Study
This paper reports the development of the canid filarial worm, Dipetalonema dracunculoides, in the brown dog tick, Rhipicephalus sanguineus by determining whether development is similar within larval, nymphal and adult stages of infected ticks. This study demonstrates that only infected nymphal ticks can support the complete development of the filarial worm. Infected larval ticks are not suitable intermediate hosts, nor are infected adults. Development depends on some stage-specific property of the vector, and the maturation to the infective stage is stimulated during the course of the nymphal-adult moult.
Topics: Animals; Dipetalonema; Insect Vectors; Larva; Ticks
PubMed: 7829843
DOI: 10.1017/s0022149x00014395 -
Journal of Helminthology Dec 1985
Topics: Animals; Cattle; Dipetalonema; Male; Skin; Sudan
PubMed: 4093593
DOI: 10.1017/s0022149x00025979 -
Parasite (Paris, France) Jun 2003
Topics: Animals; Dipetalonema; Dipetalonema Infections; Dog Diseases; Dogs; Female; Italy; Male
PubMed: 12847930
DOI: No ID Found -
The Journal of Parasitology Aug 1976To determine the behavior of Dipetalonema viteae in its tick vector, Ornithodoros tartakowskyi, the ticks were fed on jirds at successive intervals of 30 to 35 days...
To determine the behavior of Dipetalonema viteae in its tick vector, Ornithodoros tartakowskyi, the ticks were fed on jirds at successive intervals of 30 to 35 days after a single infective blood meal, and the number of larvae passing from the tick during each bite was determined by recovery of: 1) adult worms from the jirds' tissues; 2) larvae from skin snips taken at the feeding site immediately after the bite; and 3) larvae from serum and tissue after artificial feeding through a skin-membrane. All methods gave similar results. Ticks harboring few larvae released most of them (82%) during the first bite, and required only 2 bites to transmit all. Ticks with moderate or heavy infections required 3 or 4 bites to transfer all larvae. Factors which may explain this are: 1) relatively short duration of the bite of heavily infected ticks due to irritation and damage to the muscles of mouthparts and pharynx by the larvae; 2) resistance of the anterior alimentary tract to penetration by the larvae; and 3) retarding effects of crowding on development and migration of larvae. Aging of infection in the tick apparently did not influence the rate of transfer of larvae. Infection adversely affected the feeding and retarded the molting of young nymphs, but with the loss of larvae in successive bites the ability to suck blood was regained.
Topics: Animals; Blood; Dipetalonema; Feeding Behavior; Female; Gerbillinae; Locomotion; Male; Skin; Ticks
PubMed: 986435
DOI: No ID Found