オオホシハジロ vs Polar bear
Aythya valisineria compared with Ursus maritimus
Key Differences
- オオホシハジロ is Not Evaluated while Polar bear is Vulnerable.
Taxonomic Classification
| Rank | オオホシハジロ | Polar bear |
|---|---|---|
| Kingdom same | Animalia (動物) | Animalia (動物) |
| Phylum same | Chordata (脊索動物) | Chordata (脊索動物) |
| Class | Aves (鳥類) | Mammalia (哺乳類) |
| Order | Anseriformes (カモ目) | Carnivora (ネコ目) |
| Family | Anatidae | Ursidae (Bears) |
| Genus | Aythya | Ursus (Bears) |
| Species | Aythya valisineria | Ursus maritimus |
Evolutionary Relationship
オオホシハジロ and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索動物)
Conservation Status
オオホシハジロ
NE — Not EvaluatedPolar bear
VU — VulnerablePopulation: ~26.0K
Trend: Decreasing ↓
Physical Characteristics
| Attribute | オオホシハジロ | Polar bear |
|---|---|---|
| Diet | — | Carnivore |
| Average Lifespan | — | 25 years |
| Average Length | — | 2.4 m |
| Average Weight | — | 450.0 kg |
Habitat & Geographic Range
オオホシハジロ
Typically found in various aerial, terrestrial, and aquatic environments.
Widely distributed across Asia (Taiwan), Europe (6 countries), and North America (United States).
Polar bear
Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.
Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.
オオホシハジロ
カンバスバック(Aythya valisineria)はIUCNレッドリストで未評価(NE)に分類されています。まだIUCNレッドリストの基準に照らした評価が行われておらず、保全状況は未確定です。
Polar bear
地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。
Related Comparisons
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