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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These flippers are smaller than those of long-finned pilot whales Globicephala globcephalawhich are otherwise similar in appearance. Launch the Aquatic Species Distribution map viewer. It measures around 30 centimetres in height and sits far forward on the body, usually lining up with the pectoral fins.

Short-finned pilot whale

Males may weigh nearly 3 kg. Accessed December 31, at https: Join us today or show your support with a monthly donation. Pilot whales, Globicephalafeed globicephalw squid and other cephalopods and small fish. Changes to the marine environment due to climate change may also potentially affect this species in the future 1.

The short-finned pilot whale does not seem to have a typical breeding season, and has been recorded breeding and giving birth in winter, spring and autumn. Within the group, older non-breeding females can serve as a sort of “storage bank” of information for the pod.

Description & Behavior

Average number of offspring 1 Average number of offspring 1 AnAge Average gestation period 15 months Average gestation period days AnAge Range weaning age 24 low months Range time to independence 3 low years Range age at sexual or reproductive maturity female 7 to 12 years Average age at sexual or reproductive maturity female 9 years Range age at sexual or reproductive maturity male 7 to 17 years Average age at sexual or reproductive maturity male University of Texas Press, Austin, Texas.

Population trend data is insufficient to determine conservation status for short-finned pilot whales. This patch is lighter in younger animals 5. Adult females typically give birth every 7 years, and have 4 to 5 calves in their lifetime.

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Balaenoptera Common minke whale B. Diseases of Aquatic OrganismsVol Adult males measure up to 6. The typical diet of the short-finned pilot whale appears to consist of squid and fish, as well as other cephalopodssuch as octopuses 1 4 7 8 9. Continental shelf A region of relatively shallow water, not usually deeper than metres, surrounding each of the continents.

The cause of the mass strandings is unknown, although several theories exist such as sonar problems or parasitic infections that interfere with the central nervous system causing neurological disorders.

Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Short-finned pilot whale [1] Short-finned pilot whale surfacing Size compared to an average human Conservation status. Ziphiidae Beaked whales Berardius Arnoux’s beaked whale B.

Female pilot whales reach sexual maturity at about 6 years of age or when they grow to about 4 m in length. The species has been heavily hunted in the western Northern Pacific. Pacific Ocean body of water between the southern ocean above 60 degrees south latitudeAustralia, Asia, and the western hemisphere.

Their head region is described as having a bulging forehead, and from this are nicknamed melon heads. Breeding occurs between males and females from unrelated pods. Academic Press, San Diego, California. Short-finned pilot whales are nomadic and social animals that are primarily nocturnal. By using this site, you agree to the Terms of Use and Privacy Policy.

Amazon river dolphin I. Views Read Edit View history.

This species is affected by global climate change. The earliest known morbillivirus infections were recorded in long-finned pilot whales G. The newborn calf averages about 1.

Because they easily adapt to captivity, pilot whales are also exhibited in many aquariums and zoos. Wildscreen With – Tom Hooker: Includes nautiloids, cuttlefish, squids, octopuses, and extinct ammonites and belemnites.

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. Also known as blackfish, Pacific pilot whale, pothead, shortfin pilot whale.

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Short-finned pilot whale videos, photos and facts – Globicephala macrorhynchus | Arkive

Males migrate macrorhynchys pod to pod and do not contribute to taking care of young. Female short-finned pilot whales reach sexual maturity at about 8 years of age, while males reach maturity later, at about 13 years. Eusociality, menopause and information in matrilineal whales.

Although males are found in these groups as well, gllobicephala are not necessarily fathers of the calves. This species is also directly targeted by fisheries in Japan, the Caribbean and the Philippines.

FAO Fisheries & Aquaculture – Aquatic species

Dorsal-fin shape is the best clue to distinguishing pilot whales from these species. 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.

Males globicepphala sexual maturity at 12 years of age or 4. For us who call ourselves human beings, it is a great responsibility to protect not only mmacrorhynchus survival but also their welfare. The largest catches have recently occurred off Japan, where small coastal whaling stations and drive fisheries take a few hundred annually.

They tend to be quite slender when they are young, becoming more stocky as they get older. Females remain fertile to 35 years old and can lactate as late as Pods of up to several hundred short-finned pilot globicephapa are seen, and members of this highly social species are almost never seen alone. In areas of overlap, the 2 pilot whales are difficult or impossible to distinguish at sea.