Results 151 to 160 of about 2,866 (198)
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Nature, 1960
ALTHOUGH considerable information has been published on the nutritional requirements of fly larvae (refs. 1–5 and Mer, G. G., personal communication) the actual natural food of these insects has never been unequivocally described. The biotopes of housefly larvae consist of a variety of materials which by themselves appear nutritionally inadequate, but ...
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ALTHOUGH considerable information has been published on the nutritional requirements of fly larvae (refs. 1–5 and Mer, G. G., personal communication) the actual natural food of these insects has never been unequivocally described. The biotopes of housefly larvae consist of a variety of materials which by themselves appear nutritionally inadequate, but ...
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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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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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The Canadian Entomologist, 1974
H. Mourier (1965) described a “novelty effect” in the response of houseflies, Musca domestica L., to a “new object” (usually a 15×15 cm square black tile) placed on the floor of their cage. On its first introduction into their familiar environment, the tile appeared highly attractive and received many visits.
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H. Mourier (1965) described a “novelty effect” in the response of houseflies, Musca domestica L., to a “new object” (usually a 15×15 cm square black tile) placed on the floor of their cage. On its first introduction into their familiar environment, the tile appeared highly attractive and received many visits.
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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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Steroid Requirements of Housefly Larvæ
Nature, 1954IT has been known for some time that with very few exceptions1 insects require only the unsaponifiable, not the saponifiable, fractions of lipids. According to Hobson, for example, the larvae of Lucilia sericata require cholesterol as an extraneous growth factor, and they are capable of synthesizing neutral fat from a lipid-free peptone diet under ...
E D, BERGMANN, Z H, LEVINSON
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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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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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Studies on the enzyme lipase in the housefly
Archives of Biochemistry and Biophysics, 1958Abstract The various stages of the housefly, Musca domestica , have been examined for lipase activity. Lipolysis was performed by all stages with varying degrees of activity. The larval stage was the most active, and it was found that the lipase was localized in the midgut region. A crude lipase has been extracted from the larvae.
F D, BAKER, D, PARETSKY
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