Spheniscus demersus   (Linnaeus, 1758)

Jackass penguin
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Spheniscus demersus

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Aves | Sphenisciformes | Spheniscidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Others.  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Western Indian Ocean and Eastern Atlantic.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 70.0 cm TL male/unsexed; (Ref. 91362); max. published weight: 3.1 kg (Ref. 356)

Biology     Glossary (e.g. epibenthic)

Population decline was recorded in the 19th century wherein 295,000 birds in 1956 became 170,000 birds in 1978. Threats include oil pollution, fisheries, and competition for food and space (Ref. 84934).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

Harrison, P. 1987. (Ref. 91362)

IUCN Red List Status (Ref. 130435: Version 2024-1)

  Endangered (EN) (A2ace+3bce+4ace); Date assessed: 09 September 2019

CITES status (Ref. 108899)


CMS (Ref. 116361)


Threat to humans

Human uses


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Trophic Ecology
Food items
Diet
Food consumption
Ration
Predators
Ecology
Ecology
Home ranges
Population dynamics
Growth
Age/Size
Length-weight
Length-length
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Larval dynamics
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Human Related
Aquaculture profile
Stamps, Coins Misc.
Outreach
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Vulnerability (Ref. 71543): Moderate to high vulnerability (48 of 100).
Price category (Ref. 80766): Unknown.