Tuesday, February 5, 2013

Bottlenose Dolphin


Animal You | Bottlenose Dolphin | Tursiope are known to hybridize with other species of dolphins. Hybrids with Risso's dolphin, both in the wild and in captivity. The most famous is the Wolphin, a false killer whale-bottlenose dolphin hybrid. The first was born in 1985 to a female bottlenose dolphin. Hybridized in captivity a dolphin and a rough toothed dolphin. A common dolphin bottlenose dolphin hybrid born in captivity lives at SeaWorld California. Other hybrids live in captivity around the world and in nature, like a dolphin bottlenose dolphin Atlantic spotted hybrid They are gray, varying from. Adults vary in length between 2 and 4 meters (6.6 to 13 m) and weighing between 150 and 650 kg (330 and 1,400 lb) males on average slightly longer and considerably heavier than females. Except in the eastern Pacific tend dolphins in warmer, shallow waters to be less in the colder waters pelagic. A survey in the Moray Firth in Scotland, northern dolphin second world population, recorded an average length of adults less than 4 m (13 ft), compared with a 2.5 m (8.2 ft) with an average population of the coast of Florida.

Bottlenose dolphins can live for over 40 years. Discovered a dolphin in Japan has two additional pectoral fins, or "hind legs", the tail, the size of a pair of human hands. The dolphin in search of food is a form of sonar known as echolocation helped: in search of objects from the sounds they produce and listen to the echoes. Emits a pulse burst of broadband clicking sounds in a focused beam in front of the dolphin. Since the object of interest is approached, the echo mount stronger, and dolphins by reducing the intensity of the sound radiated. Inter-click interval also reduces the animal approaches the target. Apparently the dolphin waits for each echo before clicking on it again. Dolphins have sharp eyes. Bottlenose dolphins are able to salty, sweet, bitter (quinine sulfate) and acid (citric acid), the discovery of taste, but this is not well studied. It is said that some animals in captivity is said to have preferences for fish food, but it is unclear whether this porpoises taste preference mediated burst pulsed sounds, whistles, and body language to communicate. Examples of body language to jump out of the water, grabbed his jaw hit the tail on the surface and the heads of detonation. Sounds and gestures help to pursue other dolphins in the group, and warn other dolphins to danger and nearby food. Every animal has a unique identifier, frequency-modulated narrow-band signature vocalization (signature whistle).

Researchers from the Bottlenose Dolphin Research Institute (BDRI) have in Sardinia (Italy) is now shown whistles and burst pulsed sounds are important animals of social life and mirror their behavior. The Dolphins transmitted these strident sounds when in the presence of other people in the same direction of the prey. Other communication uses about 30 distinguishable sounds, and although famous proposed by John Lilly in 1950, not "dolphin language" was found. The rocker has a single blowhole on the dorsal surface of the head is constituted by a hole, and a muscular valve. Dolphins are breathing volunteers, the area aware and open their holes for air to reach. You can use almost twice as much oxygen in proportion to their body weight than a person can: Dolphin 36 ml of oxygen per kilogram of body weight saving compared to 20 ml / kg for humans Dolphins can breathe while "asleep". The active processes in the brain, on the surface and respiratory behavior. During the sleep cycle, remain near the surface swimming slowly or "logging", and occasionally turning a blind eye.

Women. The breeding season produces significant physiological changes in men. If fewer sperm per mating season out social means wasting less. Males have large testes in relation to body size. During the mating season, the men compete for access to females. Fight other males or females hats for access by other males in Shark Bay, male dolphins have been observed to follow in pairs or larger groups, and / or the movement of a woman in a week waiting period, you become sexually receptive. Mating occurs belly to belly. Georgetown University professor Janet Mann argues the strong personal behavior of male calves is about bond formation and benefits the species in an evolutionary context. Dolphins adult women and young people generally in groups of up to 15 animals, but they live in fission-fusion societies of varying group size change where groups of people, often on a daily or hourly basis. In a community of dolphins near Sarasota, are the most common group for adults. Females with their children, the elderly recent sub-adults of both sexes and adult males alone or in pairs linked Smaller groups can combine large groups of 100 or more to form, and sometimes more than 1000. Social strategies of marine mammals, such as dolphins "interesting parallels" with the social strategies of elephants and chimpanzees.

Porpoise by Bottlenose Dolphin Research Institute researchers off the island of Sardinia show random social behavior studied while feeding, and their social behavior is not dependent on food. The diet consists mainly of small fish, crustaceans and squid. The bottlenose dolphin sometimes hits a fish with its fluke, sometimes knocking out water, using a strategy called "fish whacking". If a school to a school of fish, which will tour the school and catch fish in a mini whirlpool Dan if dolphins in the school to be and push their bodies into a mud-flat, so that the fish flat on the mud as well. dolphins then crawling on their side, the consumption of fish washed on the shore. This behavior is due to a small community of bottlenose dolphins over grassland surface run (less than 1 m), in the Florida Keys. Bottlenose dolphins conflict with small-scale coastal fishing business in some areas of the Mediterranean. Common bottlenose dolphins are probably attracted to fishing nets because they offer a concentrated source of food. Dolphins exhibit altruistic behavior toward other sea creatures. On Mahia Beach, New Zealand, March 10, 2008, two pygmy sperm whales, one female and calf, stranded on the beach. The bottlenose dolphin can behave aggressively. Men fight for rank and access to females. Researchers at the University of Aberdeen say the dolphins do not eat their victims, but only in competition for food.

The bottlenose dolphin sometimes forms mixed species groups with other species of the dolphin family, particularly larger species, such as short-finned pilot whales, killer whales and Risso's dolphins. They also interact with smaller species, such as Atlantic Spotted Dolphin and rough toothed dolphin. Some species of large sharks such as the tiger and the white shark, the great white shark and the bull shark, prey on the bottlenose dolphin, especially calves. The dolphin is able to defend itself by charging the predator behavior 'bullying' dolphin sharks can sometimes be fatal for the shark Towards a single adult dolphin can be dangerous for a shark of similar size. . Orca populations in New Zealand and Peru have been observed to hunt dolphins, but this seems rare, and other orcas may swim with the dolphins. Swimming in Dolphins defend themselves from predators. Bottlenose dolphins and complex evasive strategies to their enemies, or bullying techniques Outswim forced predator fight to the death or escape. The species has sometimes curiosity towards humans or near water. In November 2004, a dramatic report of dolphin intervention from New Zealand. In coastal regions, dolphins run the risk of collisions with boats. The researchers of the period of research work bottlenose first Institute of quantified data in solitary bottlenose dolphin diving behavior in the presence and absence of boats. Dolphins responded tourism than fishing. Driving speed, engine type and distance all affect dolphin safety.

Bottlenose dolphins perform in many aquaria, generating much controversy. Some animal rights activists say the dolphins do not have enough space or adequate care or stimulation. But others counter that the dolphins are well cared for and enjoy interacting with people. Eight dolphins inhabiting the Marine Life Aquarium in Gulfport, Mississippi were swept away from their aquarium pool during Hurricane Katrina. Therapy for children with disabilities are able to interact with the dolphins. The military of the United States and Russia train bottlenose dolphins. "Dolphin Encounter" commercial and tour in many countries. In the town of Laguna in south Brazil, a pod of dolphins fish for anglers of driving on the beach in shallow water. A dolphin then continues, after which the fishermen cast their nets. The dolphins feed on fish in flight.
Find Animal You