🦈Grey reef shark
オグロメジロザメ(Carcharhinus amblyrhynchos)はメジロザメ属に属するサメの一種。インド太平洋のサンゴ礁で見られる最も一般的なサメで、特にドロップオフ周辺に多い。典型的なメジロザメ類の体型で、幅広く丸い吻・大きな眼を持つ。第一背鰭を除いた全ての鰭に黒い模様を持つこと(特に尾鰭の後縁)、2基の背鰭の間に隆起線がないことで他種と区別できる。全長1.9m程度。 泳ぎは速く、夜間に活動的になり硬骨魚や頭足類を食べる。他種に対しては攻撃的だが同種には寛容で、日中には大きな群れを作る。胎生で、2年毎に1-6匹の仔を産む。雌は浅瀬で群れを作り、高水温によって胎児の成長を促す。威嚇行動は非常によく知られており、近づいた他種のサメやダイバーなどに対して、攻撃の前に通常とは異なる姿勢で特殊な行動を取る。人への攻撃も知られ、特に威嚇行動時には注意すべきである。多数の地域で漁獲され、繁殖・移動力が低いために減少しており、IUCNは保全状況を絶滅危惧としている。
Text: Wikipedia, CC BY-SA 4.0.
IUCN Red List assessment, 2020.
- Body mass
- 19 kg
- Body length
- 2.55 m
- Shoulder height
- not recorded
- Top speed
- not recorded
- Bite force
- not recorded
- Maximum lifespan
- 25 years
Everything we know about the Grey reef shark
Typical adult figures. Where a value is an estimate rather than a measurement, it says so.
Body mass19 kgrecord 34 kg · FishBaseAnAgeDetails ↓Hide ↑
data quality: acceptable
Record: largest individual on record
Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0
Body length2.55 mmaximum recordedFishBaseOther figures ↓Hide ↑
Source: FishBase · v25.04 · CC BY-NC 4.0
By sex
- Female1.72 mFishBasev25.04
Maximum lifespan25 yearsrecord 25 years · FishBaseAnAgeDetails ↓Hide ↑
data quality: acceptable
Record: largest individual on record
Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0
Litter sizeabout 4AnAgeDetails ↓Hide ↑
data quality: acceptable
Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0
Trophic level4.11FishBaseDetails ↓Hide ↑
Source: FishBase · v25.04, estimate table · CC BY-NC 4.0
DietcarnivoreaverageDetails ↓Hide ↑
From trophic level 4.11 (FishBase): <2.2 herbivore, 2.2–2.8 omnivore, >2.8 carnivore.
Danger to humanstraumatogenicFishBaseDetails ↓Hide ↑
Source: FishBase · v25.04 · CC BY-NC 4.0
Volume l19 LaverageDetails ↓Hide ↑
Body mass at ~1.0 kg/L, the density of vertebrate tissue.
average = a mean across sexes or species in a group.
Not recorded for Grey reef shark yet: shoulder height, top speed, bite force.
Family tree
- kingdomAnimalia
- ›phylumChordata
- ›classElasmobranchii
- ›orderCarcharhiniformes
- ›familyCarcharhinidae
- ›genusCarcharhinus
- ›speciesCarcharhinus amblyrhynchos
- subphylumVertebrata
- superclassGnathostomata
- classSharks & rays · Chondrichthyes
- subclassElasmobranchii
All 7 branches ↓Fewer branches ↑
- kingdomMetazoa
- phylumChordata
- subphylumCraniata
- subphylumVertebrata
- superclassGnathostomata
- classSharks & rays · Chondrichthyes
- subclassElasmobranchii
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