While near pinniped rookeries in autumn and winter, sharks avoid the surface and use water to 50 meters in depth which is consistent with a silhouette-based hunting strategy. White sharks also exhibit a broad depth distribution offshore and remain there for the spring and summer (4).
White Sharks typically spend their day in temperatures between 15C to 24C (59F to 75F). However, as they begin to hunt their prey, they dive down deep into the ocean and slowly rise as they look for food. Sharks have been noted to dive as low as 250 meters below the sea line as far out as 22 km from shore (1). The timing of these deep dives were also researched. The White Sharks only stayed at deep distances for only a few hours before coming back up to the …show more content…
The muscle temperatures of the shark are as much as 10 oC warmer than the water that it swims in. This confirms that a system of large retia mirabilia in the circulatory system function as heat exchangers. (2) The shark does not thermoregulate and muscle temperature changes slowly as water temperature changes. Because of these heat changes the shark can maintain itself for more than a month on a single large meal.
Speed of locomotion plays an important role in an animal’s biology and ecology and is of particular interest in aquatic animals, especially in the white shark. In many animals, locomotion is the primary cause of energy expenditure. The average rate of locomotion is often correlated with metabolic rate which means the speed at which the shark moves through its environment represents a balance between energy expenditure and the need to perform a range of behaviors for survival (10). Speed is an important factor for understanding the evolution and adaptation of sensory systems because speed determines the rate at which sensory information is encountered and processed by the animas as it moves. In then environment for white sharks, they must control their movement in both the horizontal and the vertical planes and deal with a complex three dimensional sensory …show more content…
Swimming speed is a fundamental attribute of white sharks and is influenced by their sensory capabilities and interaction with their environment.
Even though these sharks were able to withstand temperatures colder than 5 oC, there are significant physiological stresses that are put on the shark. It was noted that even though the sharks portrayed a considerable tolerance for cold water, vertical patterns in movement indicated some thermal constraints on the behavior of the shark.
Offspring of these sharks are Viviparous, which means that the eggs evolve in the uterus until birth. The pregnancy period is about 11 months, and birth usually occurs in the spring or summer. Pregnant females are noted to swim from feeding grounds to nursery areas when they are ready to give birth. There is a cannibalism phenomenon which occurs in the womb. Yes, you read that right. The larger “pups” actually kill and feed on the underdeveloped ones. Even in the womb they are huing. Small isolated populations are vulnerable to inbreeding as reproducing adults have an elevated probability of mating with relatives. Nonrandom mating of this nature generates deviations in allele frequencies from theoretical expectations in the form of deficiencies in heterozygote’s
White Sharks typically spend their day in temperatures between 15C to 24C (59F to 75F). However, as they begin to hunt their prey, they dive down deep into the ocean and slowly rise as they look for food. Sharks have been noted to dive as low as 250 meters below the sea line as far out as 22 km from shore (1). The timing of these deep dives were also researched. The White Sharks only stayed at deep distances for only a few hours before coming back up to the …show more content…
The muscle temperatures of the shark are as much as 10 oC warmer than the water that it swims in. This confirms that a system of large retia mirabilia in the circulatory system function as heat exchangers. (2) The shark does not thermoregulate and muscle temperature changes slowly as water temperature changes. Because of these heat changes the shark can maintain itself for more than a month on a single large meal.
Speed of locomotion plays an important role in an animal’s biology and ecology and is of particular interest in aquatic animals, especially in the white shark. In many animals, locomotion is the primary cause of energy expenditure. The average rate of locomotion is often correlated with metabolic rate which means the speed at which the shark moves through its environment represents a balance between energy expenditure and the need to perform a range of behaviors for survival (10). Speed is an important factor for understanding the evolution and adaptation of sensory systems because speed determines the rate at which sensory information is encountered and processed by the animas as it moves. In then environment for white sharks, they must control their movement in both the horizontal and the vertical planes and deal with a complex three dimensional sensory …show more content…
Swimming speed is a fundamental attribute of white sharks and is influenced by their sensory capabilities and interaction with their environment.
Even though these sharks were able to withstand temperatures colder than 5 oC, there are significant physiological stresses that are put on the shark. It was noted that even though the sharks portrayed a considerable tolerance for cold water, vertical patterns in movement indicated some thermal constraints on the behavior of the shark.
Offspring of these sharks are Viviparous, which means that the eggs evolve in the uterus until birth. The pregnancy period is about 11 months, and birth usually occurs in the spring or summer. Pregnant females are noted to swim from feeding grounds to nursery areas when they are ready to give birth. There is a cannibalism phenomenon which occurs in the womb. Yes, you read that right. The larger “pups” actually kill and feed on the underdeveloped ones. Even in the womb they are huing. Small isolated populations are vulnerable to inbreeding as reproducing adults have an elevated probability of mating with relatives. Nonrandom mating of this nature generates deviations in allele frequencies from theoretical expectations in the form of deficiencies in heterozygote’s