GLOBICEPHALA MACRORHYNCHUS PDF
Species: Globicephala macrorhynchus; Common name: Short-finned pilot whale; Synonyms: Globicephala sieboldii, Globicephala scammonii. Learn more about the Short-finned pilot whale – with amazing Short-finned pilot whale videos, photos and facts on Arkive. Description. “The short-finned pilot whale is one of two species of the genus Globicephala living in North American waters, mostly in tropical to temperate waters.
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The globular shape of the head is more highly developed in males, and in old males can droop and come to hang over the mouth 2 4. Kasuya and Marsh, ; McAuliffe and Whitehead, ; Shane, Key Behaviors natatorial nocturnal motile nomadic social Home Range Pods of short-finned pilot whales often stay within a few hundred miles and return to squid spawning sites yearly.
Short-finned pilot whale videos, photos and facts – Globicephala macrorhynchus | Arkive
The Animal Diversity Web is an educational resource written largely by and for college students. Most short-finned pilot whales have between seven and nine short, tough teeth on each side of the jaw, at the front of the mouth 4. This species is affected by global climate change.
The short-finned pilot whale prefers warm, deep waters, typically around the outer edges of the continental shelf 1 2. It is assumed that they are more active and social at night when they feed. They stay in close physical contact as a means of communication until the newborn is older. Most sightings can be tentatively assigned to species, based on the area. Globicephala macrorhynchus Gray, Females in the menopausal stage will gglobicephala help out the younger, breeding females.
This species is featured in: Albacore tuna Thunnus alalunga. Their exact taxonomy has yet to be verified. Herds of this species usually consist of a small number of reproductive adult males, sometimes glohicephala one, with a greater number of adult females of all ages and reproductive status, plus immature calves of both sexes 2 7.
Short-finned pilot whale – Wikipedia
They have flukes with sharply pointed tips, a distinct notch in the middle and concave edges. The weaning period lasts 24 months, and the young are independent after 3 years. Used by bats macrorhyncuhs odontocete cetaceans toothed whales, dolphins and porpoises for orientation and to detect and locate prey. Antarctic petrel Thalassoica antarctica. They consume about 45 kg of food per day. Short-finned pilot whales are hunted by humans as a food source, to melt blubber into oil, and gloibcephala bone ornaments and tools.
Description & Behavior
False killer whale P. An aquatic biome consisting of the open ocean, far from land, does not include sea bottom globicphala zone. We sincerely thank our thousands of members, donors and sponsors, who have decided to get involved and support the MarineBio Conservation Society.
Taxonomy The science of classifying organisms, grouping together animals which share common features and are thought to have a common macrorjynchus. Each female short-finned pilot whale will give birth to four or five calves during her lifetime 2. Subspecies A population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.
To learn about climate change and the species that are affected, visit our climate change pages. They have a round head with a small beak and dolphin-typical up-curved mouthline. The Canary Islands, together with Hawaii, are the only two globiephala in the world which have resident populations.
This is the reason for one of their other common names, blackfish although the term blackfish is variously used, usually by fishermen, to refer to killer, false killer, pygmy killer, pilot, and melon-headed whales. Accessed August 25, at http: Johns Hopkins University Press. Fisheries and Aquaculture Department. Females breed until reaching the age of 40, at which they macrorhyjchus menopause.
Short-finned pilot whales are nomadic and social animals that are primarily nocturnal. Smithsonian Institution Press, Washington, D. X Close Image credit.
Short-finned pilot whale
Short-finned pilot whale threats The main threat to the short-finned pilot whale is bycatchor incidental take in fisheries, with the whales often becoming caught in fishing equipment such as gillnets, longlines and trawls 9.
There are an estimated 1 million long-finned pilot whales and approximatelyshort-finned pilot whales worldwide. Views Read Edit View history. Their head region is described as having a bulging forehead, and from this are nicknamed melon heads.
During the day, short-finned pilot macrorhhnchus are found resting and traveling, and socialize little. Female short-finned pilot whales go through menopause much like human females do. Atlantic white-sided dolphin L. Because they easily adapt to captivity, pilot whales are also exhibited in many aquariums and zoos. Their eyes are specially adapted for life at changing ocean depths.
The dorsal fin, which is situated only about one-third of the way back from the head, is low and falcate, with a very wide base it also varies with age and sex.
In globlcephala, pilot whales, Globicephala melas long-finned and Globicephala macrorhynchus short-finnedare globiccephala in the northern and southern hemispheres in tropical and temperate waters throughout the world. They primarily inhabit warm tropical waters, but usually stay offshore in the deeper waters.
Male short-finned pilot whales are larger than females. Male pilot whales compete for females by fighting and often display aggressive behavior with females, resulting in scarred flesh and occasional infections.
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