Results 171 to 180 of about 6,799 (218)
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Specific DDT-Resistance in Houseflies
Nature, 1957Two strains of houseflies (Musca domestica L.) have been derived by selection for a number of generations from a DDT-susceptible colony which originated from wild flies collected in 1939. The colony had been mass-reared in the laboratory for fourteen years without exposure to insecticides. Selection was by two different methods.
R W, KERR +3 more
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Zeitschrift für Angewandte Entomologie, 1961
SummaryThe work deals with observations, incidental to collection of housefly larvae for a resistance survey, at breeding sites in rural Israel. Descriptions of these findings are accompanied by considerations on the nature of manure, its handling procedures in general and in Israel in particular.
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SummaryThe work deals with observations, incidental to collection of housefly larvae for a resistance survey, at breeding sites in rural Israel. Descriptions of these findings are accompanied by considerations on the nature of manure, its handling procedures in general and in Israel in particular.
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1998
The olfactory system of sexually immature 1-day-old flies is already functional. No clear differences exist between the responses of their olfactory cells and those of sexually mature flies to amylacetate, S-methylphenol, 2-pentanone and R(+)-limonene. However, the sensitivity to 1-octen-3-ol is lower in young flies than in old flies.
Kelling, FJ, den Otter, CJ
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The olfactory system of sexually immature 1-day-old flies is already functional. No clear differences exist between the responses of their olfactory cells and those of sexually mature flies to amylacetate, S-methylphenol, 2-pentanone and R(+)-limonene. However, the sensitivity to 1-octen-3-ol is lower in young flies than in old flies.
Kelling, FJ, den Otter, CJ
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Chromatin condensation in the aging housefly
Experimental Gerontology, 1984Abstract Computer analysis of digitized images of Feulgen-stained optic lobe and Malpighian tubule nuclei from the adult male housefly has shown significant age-related changes in several image features. These features relate to the amount and spatial distribution of a high and medium density chromatin component (HDC, MDC).
J P, Panno, K K, Nair
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Disrupting housefly gene reverses sex
Science, 2017Sex Determination Sex comes in many forms, even when considered at the molecular level. In different animals, the chromosomes and specific genes that function in sex determination vary widely. As a case in point, the familiar housefly displays a highly variable sex determination system.
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Acetylcholinesterase isozymes from the housefly brain
Biochimica et Biophysica Acta (BBA) - Enzymology, 1970Abstract 1. 1. Cholinesterase activity in insect head extracts was investigated by disc electrophoresis followed by spectrophotometric analysis. The supernatant of 100 000 × g , 1 h, revealed the presence of four isozymes in the housefly, two in the American cockroach and only one in the southern army worm. 2. 2.
M E, Eldefrawi +2 more
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The sterol esters of housefly eggs
Comparative Biochemistry and Physiology, 1963Abstract 1. 1. The free sterols and sterol esters from adult female houseflies and eggs were separated by column chromatography. The sterol ester fraction accounted for about 41 per cent of the total sterol from housefly eggs but only about 8·4 per cent in the female flies. 2. 2.
R C, DUTKY +3 more
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1980
Their habit of breeding in putrefying matter has led many of the higher flies into an interesting and sometimes important association with various animals (wild and domesticated) and with man. Although some maggots feed on living plants, it is possible that the original breeding material of the group was decaying vegetation, which is still the normal ...
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Their habit of breeding in putrefying matter has led many of the higher flies into an interesting and sometimes important association with various animals (wild and domesticated) and with man. Although some maggots feed on living plants, it is possible that the original breeding material of the group was decaying vegetation, which is still the normal ...
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Somatic crossing-over in the housefly
Molecular and General Genetics MGG, 1971X-rays were found to produce genetically marked cells and cell clones in heterozygous larvae of Musca domestica. The results favor the conclusion that these marked clones originated by somatic crossing-over. The technique should prove useful in developmental analyses of the housefly.
R, Nöthiger, A, Dübendorfer
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Measurement of narcotic potency using houseflies
Annals of Applied Biology, 1966SUMMARYA method is described for the measurement of narcotic potencies of chemical compounds, using houseflies. Narcotic potency measurements give rise to statistical problems which differ from those encountered in toxicity determinations in so far as the narcotic process is reversible, and successive values of the number of affected insects in a group
F R, Bradbury, F M, O'Carroll
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