Fish Olfactory System
Fish Olfactory System - Related Videos
07:25
Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
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Cited by 2 •
2017
A series of basic methods to enable the study of the reproductive ecology of fish kept in aquaria are described. These are useful protocols for collecting fish using SCUBA, transporting live fish, and observing the reproductive behavior of wild-caught fish kept in aquaria.
02:32
Osmoregulation in Fishes
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2019
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments? Fish employ osmoregulatory strategies to balance bodily levels of water and dissolved ions (i.e., solutes), such as sodium and chloride. Imagine two solutions separated by a membrane that is permeable to water.
03:54
Zebrafish Brain Dissection: A Technique of Fish Neurobiology
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2023
This video describes the technique of microdissection of the brain from an adult zebrafish. This method helps in obtaining whole brain derived neuorospheres that can be studied further.
06:32
Quadruple Immunostaining of the Olfactory Bulb for Visualization of Olfactory Sensory Axon Molecular Identity Codes
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2017
Olfactory sensory neurons express a wide variety of axon-sorting molecules to establish proper neural circuitry. This protocol describes an immunohistochemical staining method to visualize combinatorial expressions of axon-sorting molecules at the axon termini of olfactory sensory neurons.
09:00
Olfactory Behavioral Testing in the Adult Mouse
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Cited by 68 •
2009
Fundamental, yet unique properties of the rodent olfactory system have led to its increasing study among biologists. A relatively simple assessment of its function is then also needed. Here we describe sensitive tests for the characterization of mouse olfactory sensitivity and preference.
FAQs
At the rosette, dissolved odor molecules first interact with sensory receptor neurons rather than directly controlling behavior. This binding converts chemical information into electrical signals. The signals then travel through the olfactory bulb to the brain, creating a pathway through which conditions in the water can influence fish responses.
Transmission to the brain allows chemical information from the surrounding water to be interpreted in relation to behavior. This processing helps fish respond to cues associated with food, predators, habitats, and spawning sites. The pathway therefore connects sensory detection with decisions that support movement, recognition, and other essential activities.
Pollutants can affect the olfactory system by changing how fish encounter or respond to chemical information in the water. Studying these effects helps reveal how environmental contamination influences aquatic organisms. Olfactory responses can therefore provide evidence that pollution is altering conditions relevant to fish behavior and environmental health.
Changing water chemistry is important because fish depend on dissolved chemical cues to interpret their surroundings. When those conditions change, researchers can investigate whether olfactory signaling and related behaviors are affected. This makes the sensory system useful for examining how environmental change influences fish and the habitats on which they depend.
Researchers examine how pollutants, changing water chemistry, and other environmental disturbances affect the olfactory system and the responses it supports. These observations help assess consequences for aquatic organisms and provide insight into ecosystem health. The approach connects a fish's sensory experience with broader questions about environmental condition and disturbance.
Olfactory information supports behaviors linked to locating food, avoiding predators, recognizing habitats, and finding spawning sites. Because these activities are important to fish responses and life in aquatic environments, studying olfaction can help identify environmental pressures relevant to conservation. It also provides context for evaluating habitats and protecting fish populations.