Academic literature on the topic 'Beuteltiere'
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Journal articles on the topic "Beuteltiere"
Schmitz, Jürgen. "Die Wanderung der Beuteltiere." Biologie in unserer Zeit 40, no. 5 (October 2010): 294–95. http://dx.doi.org/10.1002/biuz.201090070.
Full textKronberg, Inge. "Erstes Beuteltier-Genom entschlüsselt." Biologie in unserer Zeit 37, no. 4 (August 2007): 221. http://dx.doi.org/10.1002/biuz.200790058.
Full textDissertations / Theses on the topic "Beuteltiere"
Szdzuy, Kirsten. "Reproductive strategies of K-T-crossing theria neonate and postnatal development of the morphotype of Marsupialia and Placentalia (Mammalia)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2006. http://dx.doi.org/10.18452/15483.
Full textThis project deals with the possible reasons for the evolutionary differentiation between marsupial and placental mammals after the K/T-event. One explanation could be their different reproductive patterns. Marsupialia bear virtually embryonic young after a brief gestation period. In contrast, many eutherians bear anatomically advanced, highly precocious young after a relatively long gestation period. A stable metabolism and thermoregulatory abilities of the young are considered to offer a large adaptive advantage in a changing environment, how it is presumed for the K/T-boundary. Therefore this study determines the developmental stage and the respiratory efficiency of the lungs of marsupial and placental young. Histological, ultrastructural and calorimetric investigations were carried out in an integrated study and from the results morphotype reconstructions of the marsupial and placental neonates were carried out. As representatives for altricial Placentalia, the Golden hamster (Mesocricetus auratus), the Musk shrew (Suncus murinus), and the Belanger’s tree shrew (Tupaia belangeri) were examined. Furthermore the Guinea pig (Cavia aperea) and Short-eared elephant shrew (Macroscelides proboscideus) as typical precocial Placentalia were included. The Marsupialia were represented by the Grey short-tailed opossum (Monodelphis domestica) and the Tammar wallaby (Macropus eugenii). The results confirm clear differences in the developmental degree of the neonates and the postnatal development between marsupial and placental mammals. The newborn lungs of the altricially born placentals M. auratus and S. murinus are at the late terminal air sac stage with numerous small air sacs of 50 - 80 µm in diameter. Alveoli are formed shortly after birth at the age of 2 days in M. auratus and at the age of 4 days in S. murinus. In T. belangeri and in the precocially born C. aperea alveoli are already present at birth. In contrast, the lungs of the newborn marsupials M. domestica and M. eugenii are at the early terminal air sac stage with few large air sacs of 300 – 400 µm in diameter. The postnatal lung development proceeds very slowly in marsupials and alveoli are not present before the age of 28 days in M. domestica and 65 days in M. eugenii. The metabolic investigations demonstrate that Marsupialia have a low metabolism at birth and achieve the adult metabolism late in the postnatal development. All examined Placentalia showed the same pattern of oxygen consumption. Corresponding to their advanced differentiation of the lungs they also exhibit high metabolic abilities at birth and reach the adult metabolism during the first week of life. During this critical period placental young have a higher resistance against certain environmental stresses than marsupial young and this could mean an evolutionary advantage of the placental “reproductive strategy” under suboptimal climatic conditions.
Lange-Garbotz, Anja. "Veterinärmedizinische Aspekte der Tüpfelbeutelmarderhaltung (Dasyurus viverrinus, SHAW 1800) in Zoologischen Gärten." 2020. https://ul.qucosa.de/id/qucosa%3A75220.
Full textBooks on the topic "Beuteltiere"
Publishing, CSIRO, ed. Life of marsupials. Collingwood, Vic: CSIRO Publishing, 2005.
Find full textDie Känguru-Chroniken: Ansichten eines vorlauten Beuteltiers. Berlin, Germany: Ullstein, 2009.
Find full textBook chapters on the topic "Beuteltiere"
Gould, Stephen Jay. "Lob der Beuteltiere." In Der Daumen des Panda, 301–7. Basel: Birkhäuser Basel, 1987. http://dx.doi.org/10.1007/978-3-0348-6588-3_29.
Full text"3.3 Marsupialia (Beuteltiere)." In Zähne und Gebiß der Säugetiere, 43–69. De Gruyter, 1989. http://dx.doi.org/10.1515/9783110856927-016.
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