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  • 1
    Electronic Resource
    Electronic Resource
    The Role of the Host Cell Membrane in the Replication and Morphogenesis of Bacteriophages (1973)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 27 (1973), S. 261-282 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.mi.27.100173.001401
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  • 2
    Electronic Resource
    Electronic Resource
    Σ^- hypernuclear spectra from (K^-, π^+) inclusive reactions
    Amsterdam : Elsevier
    Nuclear Physics, Section A 470 (1987), S. 609-625 
    Details
    ISSN: 0375-9474
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9474(87)90589-6
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  • 3
    Electronic Resource
    Electronic Resource
    Abnormal reproduction of the sand crab Emerita analoga in the vicinity of a nuclear generating station in Southern California (1984)
    Springer
    Marine biology 80 (1984), S. 341-345 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Female sand crabs (Emerita analoga) were sampled from 12 beaches along a 350 km stretch of Southern California coastline during the reproductive season in July, 1982. The percentage of mature females with egg masses and the condition of those egg masses were examined at each site. The proportion of mature females with egg masses varied only slightly between beaches. However, at sites within about 20 km of the San Onofre Nuclear Generating Station, a high percentage of females carried egg masses consisting of empty egg shells. A transplant experiment was conducted. Females with empty egg masses were taken from the 6.5 km N study site, where only 5% of the mature females carried normal egg masses, and transferred to running unfiltered seawater in Santa Barbara. After 2 wk, about a third of the transplanted females carried normal egg masses, while at the same time the proportion of mature females with normal egg masses remained at 5% on the beach of origin. Heated water discharged from the nuclear generating station is probably not the cause of the abnormal reproduction of sand crabs along the nearby coast. More likely causes are: (1) runoff of agricultural pesticides from a creek 3 km north of the nuclear generating plant; (2) release of metals from corroding cooling pipes, and/or (3) increased turbidity of the nearshore waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00392830
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  • 4
    Electronic Resource
    Electronic Resource
    Comparative histology of the vascular system in the domestic and game cock (1968)
    Springer
    Cellular and molecular life sciences 24 (1968), S. 937-938 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Vergleichend-histologische Untersuchung der Darmbeingefässe bei Wildhühnern und der White-Rock-Rasse zeigen eine stärkere Entwicklung der Wildhuhngefässe. Es scheint, dass das gesamte Gefäß-system bei den Wildhühnern, in Anpassung an die erhöhte Herzfrequenz und den gesteigerten Blutdruck bei besondern Erregungszuständen, über Schutzmechanismen in der Gefässwand verfügt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02138667
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  • 5
    Electronic Resource
    Electronic Resource
    Genetic analyses of male mating behavior in chickens. II. Crosses among selected and control lines (1972)
    Springer
    Behavior genetics 2 (1972), S. 289-300 
    Details
    ISSN: 1573-3297
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Reciprocal crosses of three lines of chickens, two selected lines (high-mating and low-mating), and one randombred control line, were made in the S 10 generation of selection. Dominant and/or epistatic factors and sex-linked loci appear to influence low mating behavior, in contrast to a more additive genetic basis for high levels of mating behavior without sex-linked contributions. A hypothesis is proposed whereby two genetic systems interact to influence male mating frequency in chickens; changes in various correlated traits are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01092908
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  • 6
    Electronic Resource
    Electronic Resource
    Genetic selection for growth rate alters hypothalamic satiety mechanisms in chickens (1983)
    Springer
    Behavior genetics 13 (1983), S. 295-300 
    Details
    ISSN: 1573-3297
    Keywords: chickens ; selection ; obesity ; food intake ; hypothalamic lesions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The relationship between genetic and hypothalamic obesity was investigated by comparing the response to electrolytic lesioning of the ventromedial hypothalamus in chickens from lines developed through divergent selection for high and low body weight. The high-weight line exhibits obesity, while the low-weight line is relatively lean. Lesioned adult chickens from the low-weight line exhibited the expected obesity syndrome, while lesioned high-weight-line chickens exhibited neither increased feed consumption nor increased body weight. The results suggested that artificial selection for increased body weight resulted in a diminution of hypothalamic satiety mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01071874
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  • 7
    Electronic Resource
    Electronic Resource
    Anorexia and sexual maturity in female white rock chickens. I. Increasing the feed intake (1988)
    Springer
    Behavior genetics 18 (1988), S. 383-387 
    Details
    ISSN: 1573-3297
    Keywords: anorexia ; maturity ; feed intake ; growth ; chickens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Long-term selection for low juvenile body weight has resulted in a line of chickens where sexual maturity is retarded or prevented because of anorexia.Ad libitum-fed pullets which had not commenced egg production by 240 days of age were randomly assigned to be force-fed or fedad libitum. Increasing food intake via force-feeding caused a significantly greater proportion of females to commence egg production than was noted forad libitum-fed controls. Moreover, of those pullets that commenced lay, age at onset was significantly earlier in those force-fed than in those fedad libitum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01260938
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  • 8
    Electronic Resource
    Electronic Resource
    Long-term selection for 8-week body weight in chickens — direct and correlated responses (1985)
    Springer
    Theoretical and applied genetics 71 (1985), S. 305-313 
    Details
    ISSN: 1432-2242
    Keywords: Long-term selection ; Chickens ; Body weight ; Relaxed selection ; Correlated responses ; Reproduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A bidirectional selection experiment for 8-week body weight in chickens was conducted. In addition to 27 generations of selection, random samples were chosen from each selected line in generations 6, 13, 19 and 26 to initiate lines in which selection was relaxed. Genetic change was evident in the selected high-weight line through the first 75% of the study after which response in the direction opposing selection occurred. Selection for low body weight resulted in considerable reduction in body size, particularly in the last quarter of the study. Correlated responses evaluated were body weight at several ages, conformation, age at onset of lay, various reproductive and egg quality traits and ratio (female: male) of some traits. Data from lines where selection was relaxed indicated that natural selection opposed artificial selection with the effects greater in later generations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00252072
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  • 9
    Electronic Resource
    Electronic Resource
    Mating frequency in male chickens: long-term selection (1983)
    Springer
    Theoretical and applied genetics 64 (1983), S. 317-323 
    Details
    ISSN: 1432-2242
    Keywords: Selection ; Mating behavior ; Chicken ; Gallus domesticus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Twenty-three generations of bidirectional selection in male chickens (Gallus domesticus) for number of completed matings resulted in widely diverse mating behavior in the high and low lines. Selection caused a steady increase in cumulative number of completed matings (CNCMs) of the high line with a realized heritability of 0.18±0.02. In contrast, selection for decreased CNCMs caused many males to pass a threshold below which they would not mate naturally. Changes in male mating behavior were not accompanied by changes in mating behavior of females.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274171
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  • 10
    Electronic Resource
    Electronic Resource
    Growth to sexual maturity of dwarf and nondwarf White Rock chickens divergently selected for juvenile body weight (1986)
    Springer
    Theoretical and applied genetics 73 (1986), S. 61-65 
    Details
    ISSN: 1432-2242
    Keywords: Chickens ; Growth ; Heterosis ; Dwarfism ; Sexual maturity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Growth from hatching to the onset of lay (sexual maturity) was studied in White Plymouth Rock pullets from lines selected for high (HN) and low (LN) 56-day body weight, their reciprocal F1 crosses, an F2 cross, and two dwarf populations originating from the HN and LN parental lines. The highest R2s for describing growth for all populations except HN were obtained when body weight was expressed relative to body weight at sexual maturity. Modes of inheritance differed depending on whether patterns of growth were expressed in a chronological time frame or on a physiological basis. Heterosis observed for age at sexual maturity and for body weight after the age when selection was made was not in evidence when ages and weights were expressed as a proportion of those at sexual maturity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00273719
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