Results 181 to 190 of about 5,562 (198)

Immunological response in rabbits infested with Rhipicephalus sanguineus

Medical and Veterinary Entomology, 1994
Abstract. In order to clarify the importance of humoral antibody in host resistance to ticks, in the present work we studied the immunological response of rabbits infested with larvae, nymphs or adults of Rhipicephalus sanguineus , using extracts of eggs (EE), larvae (LE),
R, Martin Hernandez, C, Cuellar Del Hoyo, A S, Olmeda Garcia, J A, Rodríguez Rodríguez   +3 more
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Rhipicephalus sanguineus: Amino acid composition of egg shell

Experimental Parasitology, 1971
Abstract Acid hydrolysis of the protein fraction of a batch of egg shells of Rhipicephalus sanguineus was followed by determination of the amino acids in the hydrolysate. Using thin layer chromatography, the amino acids—lysine, arginine, aspartic acid, serine, glycine, glutamic acid, alanine, threonine, valine, tyrosine, isoleucine, and leucine ...
B J, Jaskoski, V L, Butler
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Abnormal development of Rhipicephalus sanguineus (Ixodidae)

Experimental & Applied Acarology, 2001
Three malformed Rhipicephalus sanguineus specimens were noticed in a tick laboratory colony. These specimens had different degrees of twining, from an almost fused individual (with two anal pores) to a partially fused adult male, with four spiracular plates. One female was a heart-shaped specimen.
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Cold-stress response of engorged females of Rhipicephalus sanguineus

Experimental and Applied Acarology, 2011
We investigated the effect of prolonged exposure to low temperature on engorged females of Rhipicephalus sanguineus. Five groups of two females (F1-F5) were maintained at 8 ± 2°C, 70 ± 10% RH, and 24 h scotophase, for 15, 30, 45, 60 and 75 days. One group was maintained in the incubator (26 ± 1°C, 70 ± 10% RH, and 24 h scotophase) as control.
DANTAS TORRES F, OTRANTO, Domenico
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Rhipicephalus sanguineus, s.l.

36. Rhipicephalus sanguineus s.l. (Latreille, 1806). Aldama: ND, C. lupus familiaris (Merino et al. 2020). Bustamante: ND, C. lupus familiaris (Merino et al. 2020). Ciudad Madero: (4F, 3M, CNAC001998) ND, ND (Sánchez-Cordero et al. 2021; Chaires-Grijalva & Acuña-Soto 2024) 1. El Mante: ND, C. lupus familiaris (Merino et al. 2020).
Rodríguez-García, Iram Emmanuel, Coronado-Blanco, Juana María, Garrido-Olvera, Lorena, Guzmán-Cornejo, Carmen, López-Aguirre, Daniel, Estrada-Drouaillet, Benigno, Niño-Maldonado, Santiago, Guerra-Pérez, Antonio   +7 more
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Fungal Formulations to Control Rhipicephalus sanguineus Engorged Females

Annals of the New York Academy of Sciences, 2008
Entomopathogenic fungi are promising alternatives to chemical acaricides in controlling tick populations; however, biological formulations are required to improve conidial performance of these pathogens in the field. This study evaluated the effect of in vitro treatment of Rhipicephalus sanguineus with conidial formulations of Beauveria bassiana (Bb ...
Rosana C S, Reis, Everton K K, Fernandes, Vânia R E P, Bittencourt   +2 more
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Rhipicephalus sanguineus

Published as part of Fan, Qing-Hai, 2024, An annotated catalogue of mites and ticks (Acari) in Fiji, pp.
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Rhipicephalus sanguineus: Sequential histopathology at the host-arthropod interface

Experimental Parasitology, 1974
Abstract The reaction beneath the mouth parts of an adult, female Rhipicephalus sanguineus attached to a dog develops progressively over 4–5 days. The cement substance is confined to the external surface of the epidermis and does not form any organized structure in the dermis. The hypostome is imbedded in the cement substance and does not penetrate
J H, Theis, P D, Budwiser
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Gynandromorphism in Amblyomma cajennense and Rhipicephalus sanguineus (Acari: Ixodidae)

The Journal of Parasitology, 2002
During a survey of ticks on horses in November 2000, at the University of São Paulo farm in Pirassununga county, São Paulo, Brazil, 1 gynandromorph of Amblyomma cajennense was collected from a naturally infested horse. In another survey on dogs in March 2001, in the urban area of Monte Negro, Rondônia, Brazil, a gynandromorph of Rhipicephalus ...
M B, Labruna, A F, Ribeiro, M V, Cruz, L M A, Camargo, E P, Camargo   +4 more
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Histamine blocking agent in the salivary gland homogenate of the tick Rhipicephalus sanguineus sanguineus

Nature, 1977
STUDIES of reactivity to tick bites and tick salivary gland homogenate have revealed responses similar to those induced by histamine in the skin of lop-eared rabbits2. Salivary gland homogenates of the tick Rhipicephalus sanguineus sanguineus, however, did not cause contraction of guinea pig ileum, but blocked the action of histamine acid phosphate ...
W A, Chinery, E, Ayitey-Smith
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