The lateral line allows the shark to orient to particle movement or sound. It consists of structures called neuromasts which are located in canals that lie just below the surface of the skin or the scales.
Do dogfish sharks have a lateral line?
Along the sides of the body is a light-colored horizontal stripe called the lateral line. The line is made up of a series of tiny pores that lead to receptors that are sensitive to the mechanical movement of water and sudden changes of pressure. The spiny dogfish has a double dorsal fin.
What is the lateral line on a shark called?
Ampullary lateral-line organs (electroreceptors)
In the elasmobranchs (e.g., sharks and rays), such organs are found on the head and are called ampullae of Lorenzini.
How does the shark use its lateral line to catch prey?
The shark’s eyes, ears, and nose are all situated near its mouth. But sharks also detect their prey with sensory receptors that run along their sides. These receptors make up the “lateral line,” an organ similar in function to the ear that can feel pulses or vibrations in the water.
What is the function of the lateral line?
Abstract. The lateral line is a sensory system that allows fishes to detect weak water motions and pressure gradients.
What structure is unique to dogfish?
A feature peculiar to our specimen, the spiny dogfish, is the presence of two spines, one immediately anterior to each dorsal fin. When captured, these sharks will arch their backs and attempt to pierce their captor with these long sharp spines.
What is lateral line?
Definition of lateral line
: a canal along the side of a fish containing pores that open into tubes supplied with sense organs sensitive to low vibrations also : one of these tubes or sense organs.
What is the function of the lateral line system quizlet?
The lateral line is a system of sense organs found in aquatic vertebrates, used to detect movement and vibration in the surrounding water.
What function does the lateral line system serve Where are receptors located?
What function does the lateral-line system serve? Where are receptors located? The lateral line system is used to sense prey from long distances by means of low frequency vibrations with mechanoceptors in the lateral line . It is located along the sides of the body and over the head.
How do the ampullae of Lorenzini and lateral line work?
The ampullae of Lorenzini (Figures 3.15 and 3.37) are modified parts of the lateral line system (see later) and primarily sensitive to electrical fields (they can help a shark sense prey by detecting the electrical fields generated by activities of the prey).
What is the purpose of the ampullae of Lorenzini?
The skate, a cartilaginous fish related to sharks and rays, possesses a unique electrosensitive sensory organ known as the ampullae of Lorenzini (AoL). This organ is responsible for the detection of weak electric field changes caused by the muscle contractions of their prey.
Do all fish have a lateral line?
All fish have some form of a lateral line, some having a more developed one than 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.
Can sharks smell fear?
Can Sharks Smell Fear? No, they can’t. The sense of smell of a shark is strong, and they can smell everything that interacts with their sensory cell on their nares, but this doesn’t include feelings such as fear. But you need to remember that sharks don’t rely only on just their sense of smell.
What are 3 adaptations that sharks have?
Sharks combine physical adaptations such as sharp teeth, heightened senses and a forceful body and tail with behavioral techniques to catch prey.
In which way is a lateral line important to a fish?
The lateral line functions to detect vibrations and water movement and allows fish to orientate themselves in a water current (rheotaxis), gain information about their spatial environment, and also plays a vital role in schooling (see also HEARING AND LATERAL LINE | Lateral Line Structure).
Where is the lateral line of a fish?
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.
What is the function of the lateral line and what human structure is it most like?
The lateral line is composed of cells that are similar in form and function to cells of the human inner ear that are important for hearing. Unlike our hearing cells, which can be permanently damaged resulting in deafness, the fish sensory cells are able to regenerate.
What purpose might the lateral line system have to a fish especially in murky waters?
What purpose might the lateral line system have to a fish, especially in murky waters? By detecting water movements, the lateral system allows the fish to sense water currents but also the fish to detect objects.
What common feature is absent in the dogfish shark?
There is no notch on the upper caudal lobe and the lower caudal lobe is not well-developed. There is no anal fin on the spiny dogfish.
Is dogfish poisonous?
Meet the Pacific spiny dogfish
As their name suggests, spiny dogfish sharks sport sharp, venomous (poisonous) spines in front of each dorsal fin. Their bodies are dark gray above and white below, often with white spotting on the sides.
What is the lateral line of a fish Brainly?
A lateral line system is made up of a shallow, canal-like structure that extends along the length of the fish’s body and is filled with sensory organs. The lateral line enables a fish to sense its envi- ronment and to detect movement.
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