Seasonal Spermatogenesis In The Mute Swan Cygnus Olor
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Seasonal Spermatogenesis In The Mute Swan Cygnus Olor
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Author : H Breucker
language : en
Publisher:
Release Date : 1982-03-01
Seasonal Spermatogenesis In The Mute Swan Cygnus Olor written by H Breucker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982-03-01 with Birds categories.
Seasonal Spermatogenesis In The Mute Swan Cygnus Olor
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Author : H. Breucker
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Seasonal Spermatogenesis In The Mute Swan Cygnus Olor written by H. Breucker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
Of all the classes in the animal kingdom, birds represent the best known. There are in total about 8600 living species, and the systematic study of this class is more or less complete. Extensive observations - to a large extent by amateur ornithologists - with respect to geographical distribution, life cycles, demands on and adaptations to the environment, breeding habits, migration, and so forth have contributed towards basic and more widely relevant knowledge, e. g. , in the areas of ethology, ecology, and evo lution and also in social biology (Hilprecht 1970; Farner and King 1971). Together, all these aspects are affected by the reproductive biology of birds, and studies have therefore been carried out for many years with special emphasis on this subject. How ever, until now this emphasis in avian reproductive biology has been physiological and in particular endocrinological (Murton and Westwood 1977; Roosen-Runge 1977). The morphology of the gonads has been treated in far less detail, and has been confined to a comparatively small number of species, compared with other classes of vertebrates. Reproduction is the section in the life cycle of an animal which is most dependent upon environmental conditions. Reproduction therefore usually takes place at a par ticular time, when stress for the adult animals is at its lowest and the chances of sur vival for the newborn are at their highest, i. e.
Seasonal Spermatogenesis In The Mute Swan Cygnus Olor
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Author : Haide Breuker
language : en
Publisher: Springer Verlag
Release Date : 1982-01-01
Seasonal Spermatogenesis In The Mute Swan Cygnus Olor written by Haide Breuker and has been published by Springer Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982-01-01 with Birds categories.
Reproductive Success Of The Mute Swan Cygnus Olor In North Central County Clare Ireland
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Author : Catherine Anne McDonough
language : en
Publisher:
Release Date : 1987
Reproductive Success Of The Mute Swan Cygnus Olor In North Central County Clare Ireland written by Catherine Anne McDonough and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
Factors Affecting The Breeding Success Of The Mute Swan Cygnus Olor
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Author : M. Birkhead
language : en
Publisher:
Release Date : 1983
Factors Affecting The Breeding Success Of The Mute Swan Cygnus Olor written by M. Birkhead and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Factors Influencing Reproductive Success And Survival In The Mute Swan Cygnus Olor In North East England
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Author : Jonathan Trelawney Coleman
language : en
Publisher:
Release Date : 2004
Factors Influencing Reproductive Success And Survival In The Mute Swan Cygnus Olor In North East England written by Jonathan Trelawney Coleman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Mute swan categories.
The Effect Of Genotypic And Yearly Variations On The Egg Volumes Of The Mute Swan Cygnus Olor
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Author : P J (Phil) Bacon
language : en
Publisher:
Release Date : 1990
The Effect Of Genotypic And Yearly Variations On The Egg Volumes Of The Mute Swan Cygnus Olor written by P J (Phil) Bacon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Population Genetics Of The Mute Swan Cygnus Olor
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Author : P. J. Bacon
language : en
Publisher:
Release Date : 1979
Population Genetics Of The Mute Swan Cygnus Olor written by P. J. Bacon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Population genetics categories.
An Analysis Of Weight Changes In The Mute Swan Cygnus Olor
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Author : P J (Phil) Bacon
language : en
Publisher:
Release Date : 1986
An Analysis Of Weight Changes In The Mute Swan Cygnus Olor written by P J (Phil) Bacon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
Current Ornithology
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Author : Richard Johnston
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Current Ornithology written by Richard Johnston and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Volume 5 of this series continues its coverage of currently active re search fields in ornithology. Because an editor can never be a disin terested observer of his or her own editorial efforts, any claim for su periority of this volume is not without conflict of interest. Even so, Volume 5 has certain merits that even a parent should acknowledge, and I find the current chapters not merely timely and authoritative but compelling in their demand for a reader's attention. Wolfgang and Roswitha Wiltschko provide a perceptive review of magnetic orientation in birds, a piece dedicated to Fritz Merkel, the pioneer in studies of magnetic orientation. Sergei Kharitonov and Doug las Siegel-Causey are concerned with the behavioral ecology of seabird coloniality, emphasizing their field experiences in the USSR and the United States. Ted Miller examines the application of studies of bird behavior to comparative biology, pursuing the interface of behavior and evolutionary biology adumbrated by Konrad Lorenz in the 1930s. Jeremy Raynor gives us a summary of the work over the past decade on bird flight, which is not, by turns, as complex or as simple as we had formerly believed. Carrol Henderson describes recent develop ments in nongame bird conservation, based on his pioneering work in the State of Minnesota. Alan Kamil discusses optimal experimental design for research in ornithology, a field in which experimental work is frequently difficult to pursue.