Alaska moose

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Alaska moose
Bigbullmoose.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Cervidae
Subfamily: Capreolinae
Genus: Alces
Species:
Subspecies:
A. a. gigas
Trinomial name
Alces alces gigas
Miller, 1899

The Alaska moose (Alces alces gigas), or Alaskan moose in Alaska, or giant moose and Yukon moose in Canada, is a subspecies of moose that ranges from Alaska to western Yukon. The Alaska moose is the largest subspecies of moose. [1] Alaska moose inhabit boreal forests and mixed deciduous forests throughout most of Alaska and most of Western Yukon. Like all moose subspecies, the Alaska moose is usually solitary but sometimes will form small herds. Typically, they only come into contact with other moose for mating or competition for mates. Males and females select different home ranges during different seasons. This leads to spatial segregation throughout much of the year. While males and females are spatially separate the habitat that they occupy is not significantly different. [2] During mating season, in autumn and winter, male Alaska moose become very aggressive and prone to attacking when startled.

Contents

Diet

A young bull browsing on alder twigs in winter Young bull moose browsing on alders.jpg
A young bull browsing on alder twigs in winter

Alaska moose have a similar diet to other moose subspecies, consisting of terrestrial vegetation forbs and shoots from trees such as willow and birch. Moose have no problem feeding on willows in this way as the nutritional value of willow twigs does not differ between original growth and regrowth after browse. Moose follow the same general migration routes every year often browsing on the same trees. [3] Alaska moose require a daily intake of 9770 kilocalories (32 kg). Alaska moose lack upper front teeth but have eight sharp incisors on their lower jaw. They also have a tough tongue, gums and lips to help chew woody vegetation. [1] [4]

Size and weight

Alaska moose are sexually dimorphic with males being 40% heavier than females. [5] Male Alaska moose can stand over 2.1 m (6.9 ft) at the shoulder, and weigh over 635 kg (1,400 lb). When Alaska moose are born, they weigh on average about 28 pounds, but by five months old they can weigh up to 280 pounds. [4] The antlers on average have a span of 1.8 m (5.9 ft). Antler size and conformation are influenced by genetics, nutrition, and age. The antlers establish social rank and affect mating success. [6] Female Alaska moose stand on average 1.8 m (5.9 ft) at the shoulder and can weigh close to 478 kg (1,054 lb). [1] The largest Alaska moose was shot in western Yukon in September 1897; it weighed 820 kg (1,808 lb), and was 2.33 m (7.6 ft) tall at the shoulder. [7] While the Alaska moose and the Asian Chukotka moose match the extinct Irish elk in size, they are smaller than Cervalces latifrons , the largest deer of all time. [8]

Habitat

Alaska moose are almost omnipresent in Alaska. They range from Southeast Alaska to the Arctic slope in Northern Alaska, and are most likely to be found in the Northern forests. Alaskan moose are known as a Taiga species. The habitat in which they can be found is correlated with how much winter forage is exposed above the snow in winter. Since the late 1800’s the shrub to snowpack height ratio in Tundra regions surrounding boreal forests has increased by nearly one meter. [9] This has opened more areas for moose to inhabit. In this time, the Alaskan moose has seen an expansion of extending their range farther north. While in the last century this species has extended its range they are still more densely concentrated along the major rivers in Alaska, such as the Stikine or Yukon river. They can also be found near areas that have recently experienced wildfires, since that land generates dense willow, birch, and aspen shrubs. Many moose move during mating and calving seasons, and for winter. This can take them up to 60 miles away from their normal habitats. [10]

Social structure and reproduction

Cow with calves being approached by a brown bear in Denali National Park Moose mom with calves and a bear, Deanli National Park.png
Cow with calves being approached by a brown bear in Denali National Park

Alaska moose have no social bonds with each other and only come into contact with each other to mate, or for two bull moose to fight over mating rights. Although a bull moose is not usually aggressive towards humans, during mating season it may attack any creature it comes into contact with, including humans, wolves, other deer or even bears. Bull moose can get their antlers locked during a fight, and if so both moose can die from severe injuries or starvation. However, unlike deer, "fighting bull moose rarely lock horns as their antlers are palmated." [11] [12] Bull moose call out a subtle mating call to attract female moose and to warn other males. If a male moose loses to another male, he has to wait another year to mate. Alaska moose mate every year during autumn and winter, and usually produce one or two offspring at a time. At around 10–11 months, yearling Alaska moose leave their mothers and fend for themselves. [4]

Hunting

Alaska moose are hunted for food and sport every year during fall and winter. People use both firearms and bows to hunt moose. [10] It is estimated that at least 7,000 moose are harvested annually, mostly by residents who eat the moose meat. [10] They are also hunted by animal predators: wolves, black bears, and brown bears all hunt moose. [10]

Taxidermied specimens, American Museum of Natural History Alaska Moose at the American Museum of Natural History.jpg
Taxidermied specimens, American Museum of Natural History

Related Research Articles

<span class="mw-page-title-main">Moose</span> Mammal belonging to the deer family of ruminants

The moose or elk is the only species in the genus Alces. The moose is the tallest, and the second-largest, land animal in North America, only falling short of the American bison, in terms of mass. It is the world's tallest, largest and heaviest extant species of deer. Most adult male moose have distinctively broad, palmate antlers; other members of the deer family have antlers with a dendritic ("twig-like"), pointed configuration. Moose are winter specialists, and typically inhabit the circumpolar boreal forests or temperate broadleaf and mixed forests of the Northern Hemisphere, thriving in cooler, temperate areas as well as subarctic climates.

<span class="mw-page-title-main">Reindeer</span> Species of deer

The reindeer or caribou is a species of deer with circumpolar distribution, native to Arctic, subarctic, tundra, boreal, and mountainous regions of Northern Europe, Siberia, and North America. This includes both sedentary and migratory populations. It is the only representative of the genus Rangifer. Herd size varies greatly in different geographic regions. More recent studies suggest the splitting of reindeer and caribou into six distinct species over their range.

<span class="mw-page-title-main">Rut (mammalian reproduction)</span> Mating season of ruminant mammals

The rut is the mating season of certain mammals, which includes ruminants such as deer, sheep, camels, goats, pronghorns, bison, giraffes and antelopes, and extends to others such as skunks and elephants. The rut is characterized in males by an increase in testosterone, exaggerated sexual dimorphisms, increased aggression, and increased interest in females. The males of the species may mark themselves with mud, undergo physiological changes or perform characteristic displays in order to make themselves more visually appealing to the females. Males also use olfaction to entice females to mate using secretions from glands and soaking in their own urine. Deer will also leave their own personal scent marking around by urinating down their own legs with the urine soaking the hair that covers their tarsal glands. Male deer do these most often during breeding season.

<span class="mw-page-title-main">Red deer</span> Species of hoofed mammal

The red deer is one of the largest deer species. A male red deer is called a stag or hart, and a female is called a hind. The red deer inhabits most of Europe, the Caucasus Mountains region, Anatolia, Iran, and parts of western Asia. It also inhabits the Atlas Mountains of Northern Africa; being the only living species of deer to inhabit Africa. Red deer have been introduced to other areas, including Australia, New Zealand, the United States, Canada, Peru, Uruguay, Chile and Argentina. In many parts of the world, the meat (venison) from red deer is used as a food source.

<span class="mw-page-title-main">Irish elk</span> Extinct species of deer

The Irish elk, also called the giant deer or Irish deer, is an extinct species of deer in the genus Megaloceros and is one of the largest deer that ever lived. Its range extended across Eurasia during the Pleistocene, from Ireland to Lake Baikal in Siberia. The most recent remains of the species have been radiocarbon dated to about 7,700 years ago in western Russia. Its antlers, which can span 3.5 metres (11 ft) across are the largest known of any deer. It is not closely related to either living species called the elk, with it being widely agreed that its closest living relatives are fallow deer (Dama).

<span class="mw-page-title-main">Dall sheep</span> Species of mammal

Ovis dalli, also known as the Dall sheep or thinhorn sheep, is a species of wild sheep native to northwestern North America. Ovis dalli contains two subspecies: Ovis dalli dalli and Ovis dalli stonei. O. dalli live in mountainous alpine habitats distributed across northwestern British Columbia, the Yukon, Northwest Territories and Alaska. They browse a variety of plants such as grasses, sedges and even shrubs such as willow, during different times of the year. They also acquire minerals to supplement their diet from mineral licks. Like other Ovis species, the rams engage in dominance contests with their horns.

<span class="mw-page-title-main">Sitka deer</span> Subspecies of deer

The Sitka deer or Sitka black-tailed deer is a subspecies of mule deer, similar to the Columbian black-tailed subspecies. Their name originates from Sitka, Alaska, and it is not to be confused with the similarly named sika deer. Weighing in on average between 48 and 90 kg, Sitka deer are characteristically smaller than other subspecies of mule deer. Reddish-brown in the summer, their coats darken to a gray-brown in mid- to late August. They are also good swimmers, and can occasionally be seen crossing deep channels between islands. Their average lifespan is about 10 years, but a few are known to have attained an age of 15.

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The Alaska Wildlife Conservation Center is a non-profit organization dedicated to conservation, research, education, and animal care. The center is located on about 200 acres (81 ha) at the head of Turnagain Arm and the entrance to Portage Valley, Milepost 79 of the Seward Highway, about 11 mi southeast of Girdwood. The center is in the Municipality of Anchorage on the approximant border of the Kenai Peninsula and the Kenai Mountains to the south and the Chugach Mountains to the north.

<span class="mw-page-title-main">Thorold's deer</span> Species of mammal

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<i>Cervus</i> Genus of deer and elk

Cervus is a genus of deer that primarily are native to Eurasia, although one species occurs in northern Africa and another in North America. In addition to the species presently placed in this genus, it has included a whole range of other species now commonly placed in other genera. Additionally, the species-level taxonomy is in a state of flux.

<span class="mw-page-title-main">Elk</span> Large antlered species of deer from North America and East Asia

The elk, or wapiti, is the second largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. The word "elk" originally referred to the European variety of the moose, Alces alces, but was transferred to Cervus canadensis by North American colonists. The name "wapiti" derives from a Shawnee and Cree word meaning "white rump" for the distinctive light fur in the rear region, just like the Bighorn Sheep.

The wildlife of Alaska is both diverse and abundant. The Alaskan Peninsula provides an important habitat for fish, mammals, reptiles, and birds. At the top of the food chain are the bears. Alaska contains about 70% of the total North American brown bear population and the majority of the grizzly bears, as well as black bears and Kodiak bears. In winter, polar bears can be found in the Kuskokwim Delta, St. Matthew Island, and at the southernmost portion of St. Lawrence Island. Other major mammals include moose and caribou, bison, wolves and wolverines, foxes, otters and beavers. Fish species are extensive, including: salmon, graylings, char, rainbow and lake trout, northern pike, halibut, pollock, and burbot. The bird population consists of hundreds of species, including: bald eagles, owls, falcons, ravens, ducks, geese, swans, and the passerines. Sea lions, seals, sea otters, and migratory whales are often found close to shore and in offshore waters. The Alaskan waters are home to two species of turtles, the leatherback sea turtle and the green sea turtle. Alaska has two species of frogs, the Columbia spotted frog and wood frog, plus two introduced species, the Pacific tree frog and the red-legged frog. The only species of toad in Alaska is the western toad. There are over 3,000 recorded species of marine macroinvertebrates inhabiting the marine waters, the most common being the various species of shrimp, crab, lobster, and sponge.

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The Alaskan hare, also known as the tundra hare, is a species of mammal in the family Leporidae. They do not dig burrows and are found in the open tundra of western Alaska and the Alaska Peninsula in the United States. They are solitary for most of the year except during mating season, when they produce a single litter of up to eight young. Predators include birds of prey and polar bears, as well as humans.

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<span class="mw-page-title-main">Eastern moose</span> Subspecies of deer

The eastern moose is a subspecies of moose that currently ranges throughout Eastern Canada, New England and northern New York State. It inhabits boreal forests and mixed deciduous forests. It is the third largest North American subspecies, after the western moose and the Alaskan moose. Males are aggressive during mating season and will attack anything that provokes them.

<i>Cervalces latifrons</i> Extinct species of deer

Cervalces latifrons, the broad-fronted moose, or the giant moose was a giant species of deer that inhabited the Europe and Asia during the Pleistocene epoch. It is thought to be the ancestor of the modern moose, as well as the extinct North American Cervalces scotti. It was considerably larger than living moose, placing it as one of the largest deer to have ever lived.

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The Alaska Peninsula brown bear or "peninsular grizzly" is a colloquial nomenclature for a possible brown bear subspecies that lives in the coastal regions of southern Alaska. It may be a population of the mainland grizzly bear subspecies.

References

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Further reading