Role chemické komunikace v sociálním chování raků

KAUR, Davinder

This thesis explores the critical role of chemical communication in the social behaviour of crayfish. The research delves into how crayfish use chemical signals, particularly through urine, to regulate interactions such as dominance hierarchies, maternal care, predator avoidance, and foraging. The study also examines the effects of environmental stress and turbulence on these chemical signals, revealing the adaptability of crayfish in response to different environmental conditions. Key findings include the influence of chemical cues on maternal care, with stressful conditions prompting extended maternal behaviours and delayed juvenile development to enhance survival. Predator avoidance behaviours are also shaped by previous experiences, as crayfish become more sensitive to different cues over time. The research highlights crayfish's ability to navigate turbulent environments using sophisticated strategies to track turbulent chemical cues. It also offers practical applications involving the refining of laboratory techniques by identifying less stressful methods for substance administration. This work provides valuable insights into crayfish communication, behaviour, and environmental adaptability, with implications for conservation and ecosystem management.

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