What is the lateral line used for in fish

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Lateral line system

what is the lateral line used for in fish

LS - Lateral Line System

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Lateral line system , also called lateralis system , a system of tactile sense organs , unique to aquatic vertebrates from cyclostome fishes lampreys and hagfish to amphibians , that serves to detect movements and pressure changes in the surrounding water. It is made up of a series of mechanoreceptors called neuromasts lateral line organs arranged in an interconnected network along the head and body. This network is typically arranged in rows; however, neuromasts may also be organized singly. At its simplest, rows of neuromasts appear on the surface of the skin ; however, for most fishes , they lie embedded in the floor of mucus -filled structures called lateral line canals. These canals are placed just underneath the skin, and only the receptor portion of each neuromast extends into the canal. In amphibians the lateral line system occurs only in larval forms and in adult forms that are completely aquatic. Neuromasts are made up of a cluster of sensory and support cells encapsulated within a jellylike sheath called the cupula.

The lateral line, also called lateral line system (LLS) or lateral line organ (LLO), is a system of sense organs found in aquatic vertebrates, used to detect movement, vibration, and Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores.
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Most of us working on behalf of wild steelhead love our jobs. Still, after a long week we are ready to hit the water and share some more Science Friday steelhead knowledge. This week we touch on a study conducted by Andrew Brown at the University of Washington, along with several co-authors. More than 40 years of research on the subject has thus far not yielded a definite explanation. Specifically, Brown et al wanted to know whether hatchery- and wild-reared juvenile steelhead developed morphological defects in lateral line structure, otolith composition, and brain weight.



Role of the Lateral Line in Fish Behaviour

IB 411 PRTT: Lateral Line Systems

Lateral line

The Behaviour of Teleost Fishes pp Cite as. The lateral line of teleost fish is usually visible externally as a row of small pores along the trunk and the head. These pores lead into an underlying canal, the lateral line canal. According to Parker the first people to recognise the pores of the lateral line were Stenon in , Lorenzini in , and Rivinius in In the head of most fishes the lateral line canal has three main branches, one of which passes forwards and above the eye supra-orbital canal , another forward and immediately below the eye infra-orbital canal , and a third downwards and over the lower jaw hyomandibular canal. Unable to display preview. Download preview PDF.

The lateral line , also called lateral line system LLS or lateral line organ LLO , is a system of sense organs found in aquatic vertebrates, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells , known as hair cells , which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors , which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic adult amphibians possess mechanosensitive systems comparable to the lateral line.

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A lateral line is a sense organ fish use to detect movement and vibration in the surrounding water. It essentially is a form of eyes, ears and sensory feelings combined into one organ. All fish have some form of a lateral line, some having a more developed one then others. Lateral lines are usually visible as faint lines running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. Sometimes parts of the lateral organ are modified into electroreceptors, which are organs used to detect electrical impulses. It is possible that vertebrates, such as sharks, use the lateral organs to detect magnetic fields as well. Most amphibian larvae and some adult amphibians also have a lateral organ.

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