[Hearing mechanisms in dolphins and baleen whales (author's transl)]

Area of Science:

• Marine biology
• Bioacoustics
• Auditory system evolution

Context:

• Dolphins possess a highly sophisticated acoustic system, including ultrasound detection and echolocation.
• Baleen whales are adapted for extremely low-frequency sound reception and lack echolocation capabilities.
• Significant anatomical adaptations in the hearing organs, skull, and skin were necessary for baleen whales to overcome acoustic challenges.

Purpose:

• To review current knowledge on dolphin and baleen whale acoustic systems.
• To discuss the evolutionary adaptations of cetacean hearing.
• To explore the biotechnology involved in understanding these specialized auditory systems.

Summary:

• Dolphins exhibit advanced acoustic capabilities, including echolocation and ultrasound perception.
• Baleen whales are specialized for low-frequency hearing, necessitating major anatomical changes.
• The study reviews current understanding and discusses the biotechnology related to these unique adaptations.

Impact:

• Provides insights into the evolution of auditory systems in marine mammals.
• Highlights the diverse acoustic strategies employed by cetaceans.
• Discusses the biotechnological approaches for studying specialized sensory organs.