Results 151 to 160 of about 2,636 (187)

Status of Haematobia irritans (Diptera: Muscidae) Insecticide Resistance in Northeastern Mexico

Journal of Medical Entomology, 1995
Horn fly, Haematobia irritans (L.), populations in northeastern Mexico were surveyed for resistance to fenvalerate and coumaphos. Compared with a susceptible strain of horn flies, resistance levels among field populations for the pyrethroid, fenvalerate, ranged from 36 to 199 times at the LD50 level, indicating that horn fly control with pyrethroids ...
S E Kunz, Sidney E Kunz
exaly   +3 more sources

Immunization of Bovines with Concealed Antigens from Haematobia irritans

Annals of the New York Academy of Sciences, 2004
Abstract: To evaluate an immunization procedure using antigens from Haematobia irritans intestine (AgHiI), four bovines (group I) were inoculated with AgHiI mixed with Freund's incomplete adjuvant containing Lactobacillus casei, three bovines (group II) received AgHiI, and three bovines (group III) received saline solution.
Carlos R, Bautista, Isabel, Giles, Natividad, Montenegro, Julio V, Figueroa   +3 more
openaire   +2 more sources

Evaluation of pyriproxyfen in cattle by oral treatment: An alternative to control Haematobia irritans

Veterinary Parasitology, 2021
The horn fly, Haematobia irritans, is a bovine ectoparasite that causes large losses to cattle breeders, through lower meat and milk production and hide damage. Currently, the control of this parasite is mainly through chemicals. However, the indiscriminate use of these substances generates resistance.
Gabriela F. de Oliveira, Viviane S. Magalhães, Melina Cardilo Campos Alves, Ingrid Lins Raquel de Jesus, Monique Taveira Medeiros, Bruno de Toledo Gomes, Simone Bizerra Calado, Raphael Comissário de Melo, Yara P. Cid, Fábio B. Scott   +9 more
openaire   +2 more sources

Morphological aspects of the third instar larva of Haematobia irritans

Medical and Veterinary Entomology, 1987
Abstract. The main morphological features of the cephalic region of the larva of Haematobia irritans (L.) are the oral grooves, tripartite labium and the antennomaxillary protuberances that have the dorsal, terminal and ventral sensory organs.
openaire   +2 more sources

Population dynamics of horn fly, Haematobia irritans irritans (L.) (Diptera: Muscidae), on Hereford cattle in Uruguay

Veterinary Parasitology, 2008
Abundance of adult horn flies, Haematobia irritans irritans (L.), was monitored on 25 untreated Hereford cows in Tacuarembó Department, Uruguay, during three consecutive grazing seasons, from October 1999 to May 2002. The population showed a variable pattern of abundance during three years, with peaks in late summer-early fall of each year. Adult flies
E, Castro, A, Gil, J, Piaggio, L, Chifflet, N A, Farias, M A, Solari, R D, Moon   +6 more
openaire   +2 more sources

Identification of microorganisms in partially fed female horn flies, Haematobia irritans

Parasitology Research, 2012
The horn fly Haematobia irritans (Linnaeus, 1758) (Diptera: Muscidae) is one of the most important ectoparasites of cattle. The parasitism of horn flies interferes with cattle feeding, thus reducing weight gain and milk production. Additionally, horn flies are mechanical vectors of pathogens that cause disease in cattle.
Torres, Lorena, Almazán, Consuelo, Ayllón, Nieves, Galindo, Ruth C., Rosario-Cruz, Rodrigo, Quiroz-Romero, Héctor, Gortázar, Christian, Fuente, José de la   +7 more
openaire   +3 more sources

Bovine Teat Atresia Associated with Horn Fly (Haematobia irritans irritans (L.))-induced Dermatitis

Veterinary Pathology, 2000
Mammary gland lesions characterized primarily as mammary teat atresia were observed in a Limousin beef cattle herd in eastern Texas. Atresia of multiple teats per mammary gland was reported in firstcalf heifers at the time of calving. Pathogens were not identified in eight mammary glands collected at slaughter.
J F, Edwards, S E, Wikse, R W, Field, C C, Hoelscher, D B, Herd   +4 more
openaire   +2 more sources

Acetylcholinesterase mutation in diazinon-resistant Haematobia irritans (L.) (Diptera: Muscidae)

Veterinary Parasitology, 2008
Acetylcholinesterase (AChE) cDNA from individual field-collected diazinon-resistant horn flies was amplified by RT-PCR. Sequencing of the amplification products revealed that 8/12 of the diazinon-resistant horn flies contained a point mutation previously associated with resistance to organophosphates in house flies and Drosophila, strongly suggesting ...
Kevin B, Temeyer, Andrew Y, Li, Kimberly H, Lohmeyer, Andrew C, Chen, Pia U, Olafson, D W, Sanson, Lane D, Foil   +6 more
openaire   +2 more sources

Purification, characterization, and cloning of a serine proteinase inhibitor from the ectoparasite Haematobia irritans irritans (Diptera: Muscidae)

Experimental Parasitology, 2004
The fly Haematobia irritans irritans is one of the most important ectoparasites in cattle production, due to its ability to suck large amounts of blood. This report describes the purification and characterization of a serine proteinase inhibitor (HiTI) present in H. i. irritans head and thorax extracts.
Simone S, Azzolini, Joyce M C, Santos, Adriana F, Souza, Ricardo J S, Torquato, Izaura Y, Hirata, Renato, Andreotti, Aparecida S, Tanaka   +6 more
openaire   +2 more sources

Influence of selective treatment of bulls on the infestation of Haematobia irritans on untreated cows

Veterinary Parasitology, 2018
The distribution of Hematobia irritans is not homogeneous in cattle populations. Generally, between 15% and 30% of bovines carry more than 50% of the flies, and higher infestations occur in bulls. In this study, the effect of treating the bulls with ear tags containing 40% diazinon on the infestation of flies on the herd during the breeding season was ...
Cecilia Miraballes, Javier Sanchez, Antonio Thadeu M. Barros, Sebastian Hitateguy, Pablo Moreno, Tatiana Saporiti, Franklin Riet-Correa   +6 more
openaire   +2 more sources