Journalartikel

Jahr der Veröffentlichung: 1998

Seiten: 42-77

Zeitschrift: Theory in Biosciences

Bandnummer: 117

Heftnummer: 1

ISSN: 1431-7613

Verlag: Springer

Abstract: 
In three precocious avian species (Moscovy duck, European quail, barred buttonquali) and three altricial avian species (domestic pigeon, Java sparrow, budgerigar) the pre-and posthatching development of the skeletal system, the skin and feathers, the intestinal tract, the respiratory tract, the erythropoetic bone marrow and the brain were investigated for their temporal and quantitative growth. The modification of the precocious development to the highly evolved altricial development occurs via several intermediate steps by changing the time tables of the generally unchanged development of the single organ system. During the evolution of ontogenies, the complexly interconnected development of the various organ systems can only be altered by slight modification of their developmental time tables. Thus, from the multiply occurring mutations and other genetic variations only those are successful that do not disturb the intimate cooperation of these interconnected organ developments with the specific ecological conditions of the single species, but also which are able to optimize these developmental conditions. Thus, the complex interactions of these highly integrated functional systems with the specific ecological conditions determine molecular biological evolution.

Harvard-Zitierstil: Duncker, H. (1998) The determination of molecular-biological evolution by complexly interconnected organ systems - Evolution of avian ontogenies, Theory in Biosciences, 117(1), pp. 42-77

APA-Zitierstil: Duncker, H. (1998). The determination of molecular-biological evolution by complexly interconnected organ systems - Evolution of avian ontogenies. Theory in Biosciences. 117(1), 42-77.