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Questions and Answers
What is the function of the barbels or whiskers in catfishes?
What is the function of the barbels or whiskers in catfishes?
- Help in detecting the movement of water
- Aid in the perception of electrical stimuli
- Act as supplementary taste organs (correct)
- Assist in maintaining balance
Where are neuromasts, which are clusters of sensory hair cells, typically located in fishes?
Where are neuromasts, which are clusters of sensory hair cells, typically located in fishes?
- Along the lateral line system or in the head's dermal bones (correct)
- On the scales of the fish
- Beneath the fins of the fish
- Inside the inner ear of the fish
How does the lateral line system help a fish?
How does the lateral line system help a fish?
- Captures prey and avoids obstacles (correct)
- Detects electrical stimuli
- Enhances hearing abilities
- Maintains equilibrium and balance
Which part of fishes is responsible for maintaining balance, equilibrium, and hearing through mechanoreception?
Which part of fishes is responsible for maintaining balance, equilibrium, and hearing through mechanoreception?
What type of receptors do fishes use to detect electricity in their environment?
What type of receptors do fishes use to detect electricity in their environment?
How is hearing in some fishes enhanced according to the text?
How is hearing in some fishes enhanced according to the text?
Where are the organs of smell located in fishes?
Where are the organs of smell located in fishes?
What is the function of chemoreception in fishes?
What is the function of chemoreception in fishes?
Where are taste receptors located in many fishes?
Where are taste receptors located in many fishes?
What is one of the functions of the lateral line system in fishes?
What is one of the functions of the lateral line system in fishes?
How do fishes use olfaction to detect odorant molecules?
How do fishes use olfaction to detect odorant molecules?
What is a key role of the autonomic nervous system (ANS) in fishes?
What is a key role of the autonomic nervous system (ANS) in fishes?
What type of communication in fishes involves the release and reception of pheromones?
What type of communication in fishes involves the release and reception of pheromones?
In fish communication, what is the function of chemoreception?
In fish communication, what is the function of chemoreception?
Which communication system in fishes involves the detection of vibrations produced by the swim bladder or stridulation of teeth, bones, and fin spines?
Which communication system in fishes involves the detection of vibrations produced by the swim bladder or stridulation of teeth, bones, and fin spines?
What type of communication in fishes involves tactile interactions like pushing, locking jaws, and biting?
What type of communication in fishes involves tactile interactions like pushing, locking jaws, and biting?
How do fish use the lateral line system for communication?
How do fish use the lateral line system for communication?
Which sensory system plays a crucial role in detecting pheromones released by fishes?
Which sensory system plays a crucial role in detecting pheromones released by fishes?
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Study Notes
Communication in Fish
- Acoustic Communication involves sound production for startle or release calls, mate attraction, arousal, approach, or coordination sounds, and agonistic interactions with competitors.
- This type of communication can be disadvantages as predators can intercept signals from injured or feeding fishes.
Chemical Communication
- Chemical Communication involves the release and reception of pheromones for finding food, avoiding predators, mating, migration, parental care, species and individual recognition, aggregation, and aggression.
Tactile Communication
- Tactile Communication works at close range, involving pushing, locking jaws, and biting, and is used in stimulating potential mates and parent-offspring interactions.
Anatomy and Physiology
- Sharks and rays have a cartilaginous vertebral column, while bony fishes have spool-shaped vertebrae.
- The skull, including the gill arches and jaws of bony fishes, is fully or partially ossified.
- Sharks and rays remain cartilaginous.
Nervous System
- The nervous system of fishes coordinates body activities with the changing environment.
- The central nervous system (CNS) is composed of the brain and spinal cord.
- The peripheral nervous system (PNS) connects the brain and spinal cord to various organs, including sensory structures.
- The autonomic nervous system (ANS) coordinates activities of glands and organs with the integrating centers of the brain.
Chemoreception
- Fishes use chemoreception to learn about their environment, including finding and identifying food, locating habitat, detecting and avoiding predators, and communicating with other fish.
- The sense of olfaction involves detecting very low concentrations of odorant molecules.
- The sense of taste is well-developed in many fishes, with taste receptors located in the mouth, pharynx, and other external body parts.
Mechanoreception
- Mechanoreception in fishes involves the detection of water movement.
- The lateral line system helps a fish detect currents, capture prey, maintain position in a school, and avoid obstacles and predators.
- The inner ear is responsible for equilibrium, balance, and hearing in fishes.
Electroreception
- Electroreception is the biological ability to perceive natural electrical stimuli.
- Fishes use two types of receptors to detect electricity in their environment: ampullary receptors and others.
- Ampullary receptors can detect the weak electricity generated by living prey organisms.
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