[Gravity and animal development]

Area of Science:

• Gravitational biology
• Comparative physiology
• Evolutionary biology

Background:

• Understanding animal adaptation to altered gravity is crucial for space exploration.
• N.N. Sirotinin's concept proposes an evolution of resistance and reactivity to environmental stressors.
• Previous research indicates varied responses across different animal taxa.

Purpose of the Study:

• To conduct a comparative physiological analysis of animal responses to microgravity and hypergravity.
• To evaluate N.N. Sirotinin's concept using existing literature and author findings.
• To explore future research directions in gravitational biology and developmental studies.

Main Methods:

• Literature review of existing studies on animal responses to altered gravity.
• Comparative analysis of physiological data across different animal groups (insects, fish, amphibians, birds, mammals).
• Evaluation of experimental data against N.N. Sirotinin's evolutionary concept.

Main Results:

• Insects exhibit high tolerance to altered gravity.
• Fish and amphibians show reactions primarily in early developmental stages or in sensitive forms.
• Birds and mammals display a wide range of responses to changes in gravity.
• Findings support N.N. Sirotinin's concept of evolving resistance and reactivity.

Conclusions:

• Animal responses to microgravity and hypergravity are evolutionarily conserved and vary significantly across taxa.
• The study validates N.N. Sirotinin's concept regarding the evolution of tolerance to gravitational changes.
• Further research into the developmental aspects of gravitational biology is warranted.