Advertisement

Seasonal Spermatogenesis in the Mute Swan (Cygnus olor)

  • Haide Breucker

Part of the Advances in Anatomy Embryology and Cell Biology book series (ADVSANAT, volume 72)

Table of contents

  1. Front Matter
    Pages I-VII
  2. Haide Breucker
    Pages 1-2
  3. Haide Breucker
    Pages 2-5
  4. Haide Breucker
    Pages 5-6
  5. Haide Breucker
    Pages 9-20
  6. Haide Breucker
    Pages 79-80
  7. Back Matter
    Pages 81-94

About this book

Introduction

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.

Keywords

Biorhythmus Höckerschwan Macrophages Spermatogenese biology cell development migration morphology reproduction vertebrates

Authors and affiliations

  • Haide Breucker
    • 1
  1. 1.Department of Microscopic AnatomyUniversity of HamburgHamburg 20Germany

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-642-68460-9
  • Copyright Information Springer-Verlag Berlin Heidelberg 1982
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-540-11326-3
  • Online ISBN 978-3-642-68460-9
  • Series Print ISSN 0301-5556
  • Series Online ISSN 2192-7065
  • Buy this book on publisher's site
Industry Sectors
Pharma
Health & Hospitals
Biotechnology