Olfactory Bulb Function In Fish

Olfaction or smell is a major sense for fishes used for many different functions including location of a food source predator avoidance finding their home area or a spawning ground recognition of kin group members and identification of fish of the same species.

Olfactory bulb function in fish. Acta anat basel 87. 124130 google scholar oka y 1980 the origin of the centrifugal fibers to the olfactory bulb in the goldfish carassius auratus. Then that information passes through the olfactory nerve and reaches the olfactory bulb. The olfactory tract is a bundle of axons connecting the mitral and tufted cells of the olfactory bulb to several target regions in the brain.

The olfactory system is the system related to the sense of smell olfaction. Kellys phd investigated the sense of smell in marine fish larvae. There is considerable variations in the structure of olfactory part. Fish olfaction expert dr kelly wright answers this question.

Many fish activities are dependent on olfaction such as. Mating discriminating kin avoiding predators locating food contaminant avoidance imprinting and homing. The paper reviews recent studies of the olfactory system in fishes. These activities are referred to as olfactory mediated impairment of the olfactory system threatens survival and has been used as an.

For instance an odour consisting of different molecules activates a specific set of odourant receptors on olfactory sensory neurons which terminate in the olfactory bulb in an array of glomeruli. Ojha pp kapoor as 1974 structure and function of the olfactory organs in the fish sisor rabdophorus ham. The functions of the olfactory bulb in the olfactory bulb neurons make synaptic connections with the mitral cells in the glomerulus a group of neurons in the olfactory bulb that have different activation patterns and help you identify different smells. Zebra fish commonly used in laboratory studies have about 80 glomeruli in each olfactory bulb and the mitral cells which synapse connect with the axons of receptor cells in the glomeruli have axons extending to several glomeruli whereas in mammals the main connection of each mitral cell is with one glomerulus.

The anatomy and morphology of the olfactory organ in fish with different systematics and modes of life are considered as well. The olfactory lobes are composed of mass of nerve cells which transmit smell impulses to other centres. Information passing in the olfactory bulb is an extremely complex process which includes multiple steps of transformation performed by the underlying circuitry. Function of olfactory organ in fish.