Common Seal vs Noctule

Phoca vitulina compared with Nyctalus noctula

Key Differences

  • Common Seal is Near Threatened while Noctule is Vulnerable.

Taxonomic Classification

Rank Common Seal Noctule
Kingdom same Animalia (動物) Animalia (動物)
Phylum same Chordata (脊索動物) Chordata (脊索動物)
Class same Mammalia (哺乳類) Mammalia (哺乳類)
Order Pinnipedia (Seals & Sea Lions) Chiroptera (翼手目)
Family Phocidae (True Seals) Vespertilionidae
Genus Phoca (Harbor Seals) Nyctalus
Species Phoca vitulina Nyctalus noctula

Evolutionary Relationship

Common Seal and Noctule share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Noctule

VU — Vulnerable

Physical Characteristics

Attribute Common Seal Noctule
Diet Carnivore
Average Lifespan 30 years
Average Length 1.7 m
Average Weight 80.0 kg

Habitat & Geographic Range

Common Seal

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (7 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Seal

最も広く分布する鰭脚類であるゴマフアザラシの近縁種・ゼニガタアザラシ(Phoca vitulina)は、北大西洋と北太平洋の温帯・亜北極沿岸に生息する。成体は最大130kgに達し、海での魚・イカ・甲殻類の捕食と海岸や岩場での休息にほぼ同じ時間を費やす。大きく表情豊かな目は低照度での水中視覚に適応している。シャチ・サメ・ホッキョクグマにとって重要な食料源である。

Noctule

Noctule(Nyctalus noctula、オオコウモリ)は、IUCNレッドリストで危急(VU)に分類されている。野生での絶滅危機が高く、個体群が減少し生息地への圧力が増大している。

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