Atlantic Bluefin Tuna vs common bottlenose dolphin

Thunnus thynnus compared with Tursiops truncatus

Key Differences

  • common bottlenose dolphin lives longer (45 years vs 40 years).

Taxonomic Classification

Rank Atlantic Bluefin Tuna common bottlenose dolphin
Kingdom same Animalia (動物) Animalia (動物)
Phylum same Chordata (脊索動物) Chordata (脊索動物)
Class Actinopterygii (Ray-finned Fish) Mammalia (哺乳類)
Order Perciformes (ペルカ目) Cetacea (Whales & Dolphins)
Family Scombridae (Tunas & Mackerels) Delphinidae (Oceanic Dolphins)
Genus Thunnus (Tunas) Tursiops (Bottlenose Dolphins)
Species Thunnus thynnus Tursiops truncatus

Evolutionary Relationship

Atlantic Bluefin Tuna and common bottlenose dolphin share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Atlantic Bluefin Tuna

LC — Least Concern

Trend: Increasing ↑

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute Atlantic Bluefin Tuna common bottlenose dolphin
Diet Carnivore Carnivore
Average Lifespan 40 years 45 years
Average Length 2.5 m 3.0 m
Average Weight 250.0 kg 300.0 kg

Habitat & Geographic Range

Atlantic Bluefin Tuna

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Distributed across Italy, Japan, Morocco, Spain, and United States.

common bottlenose dolphin

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Atlantic Bluefin Tuna

大西洋クロマグロ(Thunnus thynnus)は大西洋・地中海に生息する世界最大のマグロ類の一種で、体長3メートル・体重700キログラム以上に達する個体が知られる。IUCNレッドリストでは絶滅危惧(EN)に分類されており、寿司・刺身用として極めて高い市場価値を持ち、1尾が3億円以上で取引された事例もある。体温調節能力と高速遊泳能力(時速70キロ以上)を持つ、硬骨魚類の中でも異例の生理的能力を備えた種である。

common bottlenose dolphin

最も研究され、最も知られているイルカ種であるバンドウイルカは、沿岸の浅瀬から外洋まで世界中の温暖な海域と温帯海域に生息します。体に対して大きな脳を持つ高度に知性的なこの種は、自己認識、複雑なコミュニケーション、社会的学習を示します。流動的な分裂融合社会で生活し、魚を追い込むために協力します。海洋生態系の健全性の重要な指標種です。

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