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Lipoid content and resistance in the housefly, Musca domestica L.
Year:
1961
Authors :
Ascher, K. R. Simon
;
.
Volume :
4
Co-Authors:
Ascher, K.R.S., Laboratorio di Parassitologia, Istituto Superiore di Sanità, Roma, Italy
Neri, I., Laboratorio di Parassitologia, Istituto Superiore di Sanità, Roma, Italy
Facilitators :
From page:
7
To page:
19
(
Total pages:
13
)
Abstract:
The lipoid content of several resistant and normal strains of houseflies was determined. A Swiss extremely DDT-resistant strain had a much higher fat content than a normal Swiss reference strain and several Italian strains. Among the Italian strains, a chlordane-resistant strain had a significantly higher fat content than a diazinon-resistant and a normal strain. This difference was no longer significant however, when the normal Swiss strain was included in the calculations. Iodine numbers, specific gravity and physical consistence showed no consistent difference between the fats of resistant and normal strains, except that the syphoned-off oils from fats of resistant flies seemed to be less viscous than those of normal flies of the same provenience. In a further series of experiments, the lipids were extracted from wheat bran, to which were added instead fats extracted from normal and from DDT-resistant housefly pupae; normal larvae were reared in a medium containing the fat from resistant pupae and vice versa. Neither this procedure nor that of offering cholesterol as sole larval lipid source, had any influence on resistance level in the adult state. © 1961 North-Holland Publishing Company.
Note:
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DOI :
10.1007/BF00334024
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
32780
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:12
Scientific Publication
Lipoid content and resistance in the housefly, Musca domestica L.
4
Ascher, K.R.S., Laboratorio di Parassitologia, Istituto Superiore di Sanità, Roma, Italy
Neri, I., Laboratorio di Parassitologia, Istituto Superiore di Sanità, Roma, Italy
Lipoid content and resistance in the housefly, Musca domestica L.
The lipoid content of several resistant and normal strains of houseflies was determined. A Swiss extremely DDT-resistant strain had a much higher fat content than a normal Swiss reference strain and several Italian strains. Among the Italian strains, a chlordane-resistant strain had a significantly higher fat content than a diazinon-resistant and a normal strain. This difference was no longer significant however, when the normal Swiss strain was included in the calculations. Iodine numbers, specific gravity and physical consistence showed no consistent difference between the fats of resistant and normal strains, except that the syphoned-off oils from fats of resistant flies seemed to be less viscous than those of normal flies of the same provenience. In a further series of experiments, the lipids were extracted from wheat bran, to which were added instead fats extracted from normal and from DDT-resistant housefly pupae; normal larvae were reared in a medium containing the fat from resistant pupae and vice versa. Neither this procedure nor that of offering cholesterol as sole larval lipid source, had any influence on resistance level in the adult state. © 1961 North-Holland Publishing Company.
Scientific Publication
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