Embryology of Dolphins / Advances in Anatomy, Embryology and Cell Biology Bd.157 (PDF)
Staging and Ageing of Embryos and Fetuses of Some Cetaceans
(Sprache: Englisch)
Comparative embryology has been neglected in the past decades. In our opinion the decreased interest has been caused by the fact that the time factor has not suffficiently been respected. Therefore we used the Stageing and Ageing Method (Sterba 1995) to...
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Comparative embryology has been neglected in the past decades. In our opinion the decreased interest has been caused by the fact that the time factor has not suffficiently been respected. Therefore we used the Stageing and Ageing Method (Sterba 1995) to determine the ontogenetic age of embryos and to state the time tables and time relations of various ontogenetic events. We examined 167 embryos and fetuses of four dolphin species (collection Dr. Senckenbergische Anatomie, Franfurt am Main). The study of intrauterine development and growth while consistently respecting the time factor enabled us to determine the time course of organogenesis of all organ systems. The resulting comparison with other mammals detected the time lag in ossification, retardation of odontogeny, the time of the origin and development of the fluke, dorsal fin and flipper, etc. We believe the Stageing and Ageing Method serves for a much more efficient evaluation of existing embryological collections which very often contain embryos of unknown age.
Bibliographische Angaben
- Autoren: Oldrich Sterba , Milan Klima , Bernd Schildger
- 2012, 2000, 133 Seiten, Englisch
- Verlag: Springer Berlin Heidelberg
- ISBN-10: 3642572979
- ISBN-13: 9783642572975
- Erscheinungsdatum: 06.12.2012
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- Größe: 14 MB
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Englisch
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