Dynamics of body mass and oxygen consumption in the ribbed newt Pleurodeles waltl ontogenesis: 1. Endotrophic development

• Published in: Biology bulletin of the Russian Academy of Sciences Vol. 37; no. 6; pp. 558 - 564
• Main Authors: Vladimirova, I. G, Kleimenov, S. Yu, Alekseeva, T. A
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : SP MAIK Nauka/Interperiodica 01.12.2010; SP MAIK Nauka/Interperiodica
• Subjects: Biochemistry; Biomedical and Life Sciences; Cell Biology; Developmental Biology; Ecology; Life Sciences; Pleurodeles waltl; Salamandridae; Zoology; Specific Growth Rate; Yolk Mass; Absolute Growth Rate; Oxygen Consumption; Biology Bulletin
• ISSN: 1062-3590; 1608-3059
• DOI: 10.1134/S1062359010060026

The correlation between parameters of growth and energy metabolism in the example of embryonic and larval development of the ribbed newt Pleurodeles waltl has been studied. The wet body mass increases five times during this period due to water absorption by developing tissues and the yolk, and the dry mass decreases 1.18 times. The highest mass-specific growth rate and mass-specific rate of oxygen consumption of developing tissues was noticed at the 33rd stage of embryogenesis (13th-14th day of development). These indexes decreased after the hatching, but increased after larvae switched to external nutrition. Comparison of the studied parameters has identified a similar features in alteration of mass-specific growth rate, mass-specific rate of oxygen consumption, and watering of developing tissues in early development of the ribbed newt.