Energy Metabolism in Postlarval Ontogenesis of Planorbarius corneus (Planorbidae, Gastropoda)
- Authors: Zotin A.A.1
-
Affiliations:
- Koltzov Institute of Development Biology, Russian Academy of Sciences
- Issue: Vol 50, No 5 (2019)
- Pages: 238-242
- Section: Developmental Biology of Invertebrates
- URL: https://journals.rcsi.science/1062-3604/article/view/183929
- DOI: https://doi.org/10.1134/S1062360419050096
- ID: 183929
Cite item
Abstract
The change in the rate and mass-specific rate of oxygen consumption was studied during individual ontogenesis of nine Planorbarius corneus individuals starting from 3 weeks after hatching until the death of animals. It is shown that, at the initial stages of development, the mass-specific rate of oxygen consumption increases, reaching a maximum at 3–7 weeks after hatching. The rate of oxygen consumption then permanently increases, and the mass-specific rate of oxygen consumption permanently decreases. The dependences of mass-specific rate of oxygen consumption (q) on the age (t) for individual P. corneus can be described by the equation qst/(1 – exp(–k (t + t0))). The values of the coefficients of this equation for different specimens do not differ significantly and are, on average, k = 0.134 ± 0.016 weeks–1; qst = 0.117 ± 0.006 mL O2/(h g). The dependence of the rate of oxygen consumption (Q, mL O2/h) on body weight (M, g) in individual development is well described by allometric equations, the power coefficients of which vary from 0.647 to 0.944 and significantly differ from each other (p < 0.001). Nevertheless, the data for all mollusks can be described by the united equation Q = 0.061 M0.795. The power coefficient of this equation does not significantly differ from the Hemmingsen constant 0.75.
Keywords
About the authors
A. A. Zotin
Koltzov Institute of Development Biology, Russian Academy of Sciences
Author for correspondence.
Email: zotin@idbras.ru
Russian Federation, Moscow, 119334