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  • 1
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    Assortative mating as a mechanism for rapid evolution of a migratory divide (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-10-22
    Description: There have been numerous recent observations of changes in the behavior and dynamics of migratory bird populations, but the plasticity of the migratory trait and our inability to track small animals over large distances have hindered investigation of the mechanisms behind migratory change. We used habitat-specific stable isotope signatures to show that recently evolved allopatric wintering populations of European blackcaps Sylvia atricapilla pair assortatively on their sympatric breeding grounds. Birds wintering further north also produce larger clutches and fledge more young. These findings describe an important process in the evolution of migratory divides, new migration routes, and wintering quarters. Temporal segregation of breeding is a way in which subpopulations of vertebrates may become isolated in sympatry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bearhop, Stuart -- Fiedler, Wolfgang -- Furness, Robert W -- Votier, Stephen C -- Waldron, Susan -- Newton, Jason -- Bowen, Gabriel J -- Berthold, Peter -- Farnsworth, Keith -- New York, N.Y. -- Science. 2005 Oct 21;310(5747):502-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biology and Biochemistry, Medical Biological Centre, Lisburn Road, Queen's University Belfast, Belfast BT6 7BL, UK. s.bearhop@qub.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16239479" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Migration ; Animals ; *Biological Evolution ; Carbon Isotopes/analysis ; Environment ; Europe ; Female ; Hydrogen/analysis ; Isotopes ; Male ; Passeriformes/*physiology ; Regression Analysis ; *Reproduction ; Seasons ; *Sexual Behavior, Animal
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Genetic basis of migratory behavior in European warblers (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: The seasonal course and magnitude of migratory restlessness recorded in four populations of the blackcap Sylvia atricapilla differ in a population-specific fashion that is related to the distance of travel. Experimentally produced hybrids of an exclusively migratory European population and a partially migratory African population showed intermediate migratory restlessness and an intermediate percentage of birds displaying restlessness compared to the two parental stocks. These results demonstrate the genetic basis of migratory behavior in this avian species and support the hypothesis that partial migration of populations is due to polymorphism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berthold, P -- Querner, U -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):77-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17747634" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic basis of moult, wing length, and body weight in a migratory bird species,Sylvia atricapilla (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 801-802 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In hand-raised groups of 4 populations of Blackcaps, different patterns of juvenile moult as well as differences in wing length and body weight, adaptive to the various degrees of migratory performance, could be demonstrated. 33 F1-hybrids which were produced experimentally with 2 of these groups (1 African×1 European) showed an intermediate expression of these adaptations relevant to migration, indicating that these physiological and morphological features are under strong direct genetic control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01972279
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  • 4
    Electronic Resource
    Electronic Resource
    Experimential evidence for endogenously programmed differential migration in the blackcap (Sylvia atricapilla) (1989)
    Springer
    Cellular and molecular life sciences 45 (1989), S. 207-209 
    Details
    ISSN: 1420-9071
    Keywords: Migration ; differential migration ; endogenous program ; blackcap ; Sylvia atricapilla ; warbler
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Female hand-raised blackcaps (Sylvia atricapilla) held in constant conditions (except for simulated seasonal changes in photoperiod) showed significantly more, and significantly longer, autumnal migratory activity as well as significantly later initiation of spring migratory activity than males from the same population (including siblings) held under identical conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954880
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  • 5
    Electronic Resource
    Electronic Resource
    Spatiotemporal programs and genetics of orientation (1990)
    Springer
    Cellular and molecular life sciences 46 (1990), S. 363-371 
    Details
    ISSN: 1420-9071
    Keywords: Bird migration ; orientation ; navigation ; circannual rhythms ; genetic programs ; inheritance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A number of migratory bird species have endogenous annual rhythms that regulate the entire annual cycle including the migratory portion. Moreover, captive migrants display inherited migratory activity; this could theoretically also be used by free-living migrants as a time-program for migration. Finally, this heritable migratory activity is oriented in a seasonally appropriate direction even in naive birds. These, characteristics should enable inexperienced migrants isolated from contact with experienced conspecifics to utilize a heritable vector-navigation program to migrate from the breeding grounds to the winter quarters. That is, migrants should reach goal areas they have never experienced by migrating in programmed directions, for as long a period as the genetically fixed time-program for migratory activity induces them to do so. The time-course of migration as established by trapping stations, theoretical influences of environmental variables on migratory programs, and also compensatory behavior and migratory backup measures, are discussed. The present evidence supports the view that a large number of migrants are essentially brought to their wintering areas by vector-navigation systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952169
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrastructure of the flagellar basal body complex of Centipeda periodontii
    Amsterdam : Elsevier
    Journal of Ultrastructure Research and Molecular Structure Research 99 (1988), S. 150-155 
    Details
    ISSN: 0889-1605
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0889-1605(88)90050-X
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  • 7
    Electronic Resource
    Electronic Resource
    Recent Advances in Studies of Bird Migration (1991)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Ecology, Evolution, and Systematics 22 (1991), S. 357-378 
    Details
    ISSN: 0066-4162
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.es.22.110191.002041
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  • 8
    Electronic Resource
    Electronic Resource
    C-Nucleosides: synthesis of novel ribavirin analogs by cycloaddition reactions of D-allononitrile N-sulfide (1984)
    s.l. : American Chemical Society
    The @journal of organic chemistry 49 (1984), S. 2165-2168 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00186a017
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  • 9
    Electronic Resource
    Electronic Resource
    Growth plate pathology in feline mucopolysaccharidosis VI (1995)
    Springer
    Calcified tissue international 57 (1995), S. 185-190 
    Details
    ISSN: 1432-0827
    Keywords: Dysostosis ; Feline ; Lysosomal ; Mucopolysaccharidosis ; Storage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract The mucopolysaccharidoses (MPS) are a family of lysosomal storage diseases that result from the accumulation of partially catabolized glycosaminoglycans (GAGs) within lysosomes. A characteristic of most affected individuals is radiographic evidence of symmetrical epiphyseal dysplasia, with short stature and degenerative joint disease. Although there is evidence of epiphyseal dysfunction, little is known of the changes that occur at the morphological level. The growth plate of the femoral head was studied by light and electron microscopy in five cats with MPS VI (Maroteaux-Lamy syndrome, arylsulfatase B deficiency) and 12 normal cats. Compared with the normals, the MPS VI cat growth plates exhibited poorly organized proliferative zones, an almost total loss of column formation in the hypertrophic zone, an uneven chondro-osseous junction, a disorganized calcifying cartilage zone, and abnormal or reduced numbers of osteoclasts. By electron microscopy, the cytoplasm of affected cat chondrocytes was filled with membrane-bound vacuoles. Together these findings indicate that the MPS diseases cause major changes in growth plate structure and function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310256
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  • 10
    Electronic Resource
    Electronic Resource
    Endogenous control as a possible basis for varying migratory habits in different bird populations (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 1451-1451 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In handraised experimental groups of 4 populations ofSylvia atricapilla, it was found that the development of migratory restlessness under constant conditions was a fairly good reflection of the different (typical, partial, and non-) migratory habits of the populations. Thus, the different migratory habits seem to be endogenously preprogrammed and genetic in origin. The results of a preliminary cross-breeding experiment are at least compatible with the assumption that partial migratory habit in the blackcap is due to polymorphism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01932346
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