![]() Other Physical Features: endothermic homoiothermic bilateral symmetry This fin curves over either to the right or left side. In males, the erect dorsal fin can reach up to 1.8 m high in females and immature males this dorsal fin is only about 0.9 m high. Female average body size and weight is slightly smaller than that of males. The average weight for a male killer whale is 7200 kg. Newborn calves are from 2 to 2.4 m long and weigh about 136 kg at birth. The average length in females is 7 m with a maximum length of 8.5 m. The average length for a male adult is 8 m, with the maximum length at 9.75 m. Also, the white on the calf's underside has a yellow tint to it until they reach 1 year old. In calves, their black is somewhat grey up to a year old. In both sexes there is a "saddle spot" which is a grey spot behind the dorsal fin on the back. There is also a white spot above the eye. They are black on the dorsal surface, white extends from the bottom of the chin to just beyond the anus on the ventral surface. Killer whales have streamlined, black and white bodies. Perception Channels: visual tactile acoustic echolocation chemical They waves travel trough these bones, then enter into the brain via an auditory nerve.Ĭommunication Channels: visual acoustic In this auditory bulla, there are bones that are like the bones found in the human ear. The sound waves enter through the jaw where they then enter into the earbone complex. The killer whale hears the whistles and clicks through an auditory bulla (earbone complex) in its lower jaw. The whale's ears are very small openings behind the eyes, which have no outer flap. As in other toothed whales, killer whales use sonar to perceive their aquatic environment. Killer whales do have good vision, but in dark water their vision is not helpful in catching prey or navigating. Clicks seem to be used only for echolocation. This dialect has been shown to stay the same in a pod for up to six generations. Each pod has their a discrete dialect that sounds slightly different from that of other pods. They use discrete calls and whistles when communicating within and among pods. Vocalizations are used both for communication and navigation. There are 3 categories of vocalizations used by killer whales: whistles, discrete calls, and clicks. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |