Embryology of Dolphins. - Staging and Ageing of Embryos and Fetuses of Some Cetaceans.pdf

Embryology of Dolphins. - Staging and Ageing of Embryos and Fetuses of Some Cetaceans

Bernd Schildger

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 sufficiently been respected. Therefore we used the Staging and Ageing Method (Sterba 1999) 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, Frankfurt 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 Staging and Ageing Method serves for a much more efficient evaluation of existing embryological collections which very often contain embryos of unknown age.

Embryology of Dolphins by Oldrich Sterba, 9783540672128, available at Book Depository with free delivery worldwide.

4.18 MB Taille du fichier
9783540672128 ISBN
Libre PRIX
Embryology of Dolphins. - Staging and Ageing of Embryos and Fetuses of Some Cetaceans.pdf

Technik

PC et Mac

Lisez l'eBook immédiatement après l'avoir téléchargé via "Lire maintenant" dans votre navigateur ou avec le logiciel de lecture gratuit Adobe Digital Editions.

iOS & Android

Pour tablettes et smartphones: notre application de lecture tolino gratuite

eBook Reader

Téléchargez l'eBook directement sur le lecteur dans la boutique www.ibedsma.be ou transférez-le avec le logiciel gratuit Sony READER FOR PC / Mac ou Adobe Digital Editions.

Reader

Après la synchronisation automatique, ouvrez le livre électronique sur le lecteur ou transférez-le manuellement sur votre appareil tolino à l'aide du logiciel gratuit Adobe Digital Editions.

Notes actuelles

avatar
Sofya Voigtuh

Embryology of Dolphins(Reprint) Staging and Ageing of Embryos and Fetuses of Some Cetaceans (Advances in Anatomy, Embryology and Cell Biology) (Volume 157) by Oldrich Sterba, Milan Klima, Bernd Schildger, Oldřich Štěrba, Oldrich Stierba Paperback, 133 Pages, Published 2013 by Springer ISBN-13: 978-3-540-67212-8, ISBN: 3-540-67212-5

avatar
Mattio Müllers

Gentechnik bei Pflanzen: Chancen und Risiken | Dr. …

avatar
Noels Schulzen

Embryological Development and Staging in the … In this study, developmental events in humans, horses, and cetaceans were used to estimate the stages of development and ages of two manatee embryos and one manatee fetus. The smaller embryo was at Carnegie stage 10 of development or at stage 2 of the cetacean embryonic stages established by Sterba et al. (2000). Its age was estimated to be 17

avatar
Jason Leghmann

The embryology of teeth and baleen shows limited similarities. Recent reviews of tooth development were provided by Catón & Tucker Embryos and fetuses collected this way will be in similar stages: about 8 weeks, 7 months and full‐term (George et al. 2016). Our study is based on six prenatal specimens (Table 1), one embryo and five fetuses, four from the spring hunt and two from the fall

avatar
Jessica Kolhmann

Embryological Development and Staging in the … Florida manatees (Trichechus manatus latirostris) are unique, endangered herbivorous marine mammals. Very little has been done to date examining manatee embryological development. Gestation in Florida manatees is approximately 14 months, and new born calves are approximately 122 cm in length, with