Results 91 to 100 of about 4,799 (261)

Identification of Sindhi cows that are susceptible or resistant to Haematobia irritans

open access: yesRevista Brasileira de Parasitologia Veterinária
To identify susceptible and resistant Haematobia irritans cows, horn flies were counted biweekly for 3 years in a herd of 25 Sindhi cows. Repeated measures linear mixed models were created including cow as a random factor. The results were analyzed by: 1)
Márcia Alves de Medeiros   +6 more
doaj   +1 more source

Susceptibility of the horn fly, Haematobia irritans irritans (Diptera: Muscidae), to insecticides in Brazil Suscetibilidade da mosca-dos-chifres, Haematobia irritans irritans (Diptera: Muscidae), a inseticidas no Brasil

open access: yesRevista Brasileira de Parasitologia Veterinária, 2012
Since horn fly populations became established throughout Brazil, complaints regarding control failure have increased around the country. A broad survey to evaluate the susceptibility of horn flies to both organophosphate (OP) and pyrethroid insecticides ...
Antonio Thadeu Medeiros Barros   +10 more
doaj   +1 more source

‘Pro‐Germans in the Pulpits’: The Queensland Presbyterian Church and the Great War

open access: yesJournal of Religious History, EarlyView.
During World War I, Protestant churches in Australia, on the whole, enthusiastically supported the war effort. The Queensland Presbyterian Church was a significant exception. This study analyses discord and tensions among its clergymen about what constituted an appropriate response to the war.
Mark Cryle
wiley   +1 more source

Development of a novel self-medicating applicator for control of internal and external parasites of wild and domestic animals

open access: yesOnderstepoort Journal of Veterinary Research, 2004
Four trials, three in the United States and one in South Africa, were conducted to evaluate the potential value of a novel self-medicating applicator in the passive control of gastrointestinal nematodes in cattle and deer, and of flies and ticks on ...
M.J Burridge   +4 more
doaj   +1 more source

The predatory behavior of ants: an impressive panoply of morphological adaptations

open access: yesInsect Science, EarlyView.
This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean   +6 more
wiley   +1 more source

Evaluation of chlorfenapyr ear tag efficacy and susceptibility of horn flies to chlorfenapyr [PDF]

open access: yes, 1999
During 1996 and 1997, the efficacy of experimental chlorfenapyr ear tags for horn fly control was evaluated under field conditions at St. Gabriel, LA. In 1996, the 30, 40, and 40% TT (thicker tags) chlorfenapyr tags provided ≥90% control for 11, 10, and ...
Doscher, M. E.   +3 more
core  

High chromosomal variation in wild horn fly Haematobia irritans (Linnaeus) (Diptera, Muscidae) populations

open access: yesComparative Cytogenetics, 2015
The horn fly, Haematobia irritans is an obligate haematophagous cosmopolitan insect pest. The first reports of attacks on livestock by H. irritans in Argentina and Uruguay occurred in 1991, and since 1993 it is considered an economically important pest ...
Natalia Forneris   +6 more
doaj   +1 more source

Beyond Sexual Selection: Natural Selection Related Camouflage and Thermoregulation Shape Sexual Color Dimorphism in Diploderma Lizards

open access: yesIntegrative Zoology, EarlyView.
Integrating comparative spectrometry, image analysis, and thermal modeling, we reveal that (1) females optimize crypsis via background matching, (2) males prioritize high‐contrast disruptive patterning at a significant thermoregulatory cost (reduced solar heat gain), and (3) habitat‐specific monomorphism in Diploderma slowinskii underscores ecological ...
Yuning Cao, Lin Shi, Yin Qi
wiley   +1 more source

BIONOMICS OF THE HORN FLY (HAEMATOBIA IRRITANS) IN WESTERN NEBRASKA [PDF]

open access: yes, 1985
Field investigations were undertaken to determine the economic injury level of horn flies on cow-calf groups in western Nebraska. The groups utilized contained one group with cows having one fenvalerate eartag, another group with the cows having one ...
SCHREIBER, ERIC THOR
core  

Horn fly and grub contzeol on beef cattle… testing several new insecticides

open access: yesCalifornia Agriculture, 1967
A 75% reduction in horn fly populations lasted from two to four weeks following trial spray applications of insecticides in June, for two to six weeks following August treatments, and for the remainder of the fly season with most of the September grub ...
W Johnson, E Loomis
doaj  

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