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  • 1
    Electronic Resource
    Electronic Resource
    Attraction ofCarpoglyphus lactis (Acarina: Acaridae) to selected organic compounds (1987)
    Springer
    Experimental and applied acarology 3 (1987), S. 307-315 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Various chemicals commonly found in food (twelve monosaccharides, nine sugar alcohols, twenty triglycerides, eleven unsaturated fatty acids and nine saturated fatty acids) were tested in different concentrations for their ability to attract and sustain feeding by the dried-fruit mite,Carpoglyphus lactis (L.). Oleic acid, α-d-glucose and some triglycerides act as phagoincitants and phagostimulants, whiled-fucose and trilaurin are phagodeterrents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01193167
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of alternating temperatures onAcarus siro L. (Acari: Acaridae) (1985)
    Springer
    Experimental and applied acarology 1 (1985), S. 213-217 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fecundity, longevity and survival to adulthood ofAcarus siro (L.) at constant and alternating temperatures were compared. Both fecundity and longevity were affected by alternating temperatures but the effect of the frequency of alternations was not significant. Significantly higher fecundity and longer life spans were recorded at constant temperatures of 14 and 21°C than at 28°C or at alternating temperature regimes. Alternating temperature regimes in comparison to constant regimes did not significantly change the number of males and females surviving to adulthood or the sex ratio. However, the lowest number of adults surviving was recorded when temperatures were changed every 12 h and the highest at a constant temperature of 14°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01198518
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of gamma radiation on spermatophore production and reception and subsequent fecundity and egg viability inAcarus siro L. (Acari: Acaridae) (1987)
    Springer
    Experimental and applied acarology 3 (1987), S. 33-44 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Gamma radiation at doses higher than 10 krad significantly lowered the fecundity of the grain mite,Acarus siro. The fecundity of irradiated females was inversely correlated with dose, both when control or irradiated males were used in the pairing. Irradiation with ionizing radiation affected sexual activity of males. At doses above 10 krad the number of formed or observed spermatophores was lowered significantly. Sexual attractiveness of irradiated and control females to irradiated males was similar. However, non-irradiated males were observed mating more often with non-irradiated than with irradiated females. No correlation was found between the numbers of spermatophores present in the spermathecae of the female and the fecundity of the female. Irradiation had a greater effect on fecundity of the female than on sexual activity of the male; it did not affect the shape or behavior of spermatophores in the spermathecae of the female. Viability of eggs laid by females decreased by at least 50% when females or males were irradiated with doses above 20 krad. Irradiation also affected the survival of adults, but females were more sensitive than males. Net sterility index indicates that doses higher than 20 krad induce more than 90% sterility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01200411
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  • 4
    Electronic Resource
    Electronic Resource
    Anatomy and ultrastructure of the reproductive systems ofAcarus siro (Acari: Acaridae) (1990)
    Springer
    Experimental and applied acarology 10 (1990), S. 1-31 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Anatomy and ultrastructure of the female and male reproductive system inAcarus siro L. were investigated by light and electron microscopy. The female system consists of paired ovaries of nutrimentary type in which oogonia and oocytes are connected by bridges with a large central cell. The oviducts empty into the uterus, which passes into preoviporal duct lined bycuticle, and opening as a longitudinal slit (oviporus). An elongated accessory gland composed of one type of secretory cell is located along each oviduct. The copulatory opening occurs at the posterior margin of the body and leads, via the inseminatory canal, to the receptaculum seminis, consisting of the basal and saccular part. Both inseminatory canal and basal part of receptaculum seminis are lined by cuticle, whereas the wall of the sac is formed by cells covered only by long, numerous microvilli. The basal part of the receptaculum seminis joins the ovaries via two lumenless transitory cones. The male reproductive system contains paired testes, in which spermatogonia tightly surround the central cell. The proximal part of the paired vasa deferentia serves as a sperm reservoir, while the distal one has a glandular character. An unpaired, cuticle-lined ejaculatory duct opens into the apex of the aedeagus. The single accessory gland is located asymmetrically at the level of, or slightly posterior to, coxae IV. The structure of the genital papillae, which are topographically related to the genital opening in both sexes, is also briefly described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01193970
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  • 5
    Electronic Resource
    Electronic Resource
    Thermal acclimation in the grain miteAcarus siro (Acari: Acaridae) (1988)
    Springer
    Experimental and applied acarology 5 (1988), S. 175-179 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Grain mites reared on wheat germ at 21±1°C and 85% r.h. were treated (acclimated) as adults at 0, 14, 28 or 33°C for 1 or 4 days. Fecundity, longevity and numbers of F1 females and males produced were compared. A treatment of 1 day was enough to acclimateAcarus siro and change the studied developmental parameters. Acclimation always lowered fecundity but the magnitude of the effect was dependent upon the temperature regime. The number of males and females emerging differed greatly among various temperature regimes; however, the sex ratio of emerged adults remained in most instances quite constant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02053826
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of fast electrons on the reproductive biology of the grain miteAcarus siro (Acari: Acaridae) (1990)
    Springer
    Experimental and applied acarology 8 (1990), S. 223-231 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Irradiation of the adult grain mite,Acarus siro L., with substerilizing doses of fast electrons significantly reduced fecundity and egg viability. The number of spermatophores found in the bursa of treated females was also considerably reduced. However, no change in the shape of the spermatophores was observed. It is not known whether the decrease in fecundity and egg viability was the result of the drop in spermatophore production or to the death of sperm cells. Fast electrons had less effect upon, fecundity than the same dose of gamma radiation. However, irradiation by fast electrons had a similar effect on egg viability (expressed in percent), number of spermatophores produced per individual, and the number of adult F1 progeny. Fast-electron doses above 0.4 kGy caused sterility ofAcarus siro.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202133
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