Spheniscus demersus, Jackass penguin
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Spheniscus demersus   (Linnaeus, 1758)

Jackass penguin
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Spheniscus demersus

Classification / Names आम नाम | उपशब्द | CoL | ITIS | WoRMS

Aves | Sphenisciformes | Spheniscidae

Environment: milieu / climate zone / गहराई सीमा / distribution range पारिस्थितिकी

.  Subtropical

Distribution देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | भूमिका

Western Indian Ocean and Eastern Atlantic.

Length at first maturity / आकार / Weight / Age

परिपक्व अवधि: Lm ?  range ? - ? cm Max length : 70.0 cm TL पुल्लिंग / अलिंग; (संदर्भ 91362); अधिकतम प्रकाशित वज़न: 3.1 kg (संदर्भ 356)

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ 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). This is a gregarious species that is commonly found in small groups and within 50 km of shoreline. It breeds in huge colonies in burrows (Ref. 91362), mainly on offshore islands (Ref. 84934). Underwater pursuit (Ref. 356).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | Eggs | Fecundity | Larvae

Main reference संदर्भ | संयोजक | सहयोगीयो

Harrison, P. 1987 Seabirds of the world: a photographic guide. Christopher Helm, Hong Kong, 317p. (संदर्भ 91362)

IUCN Red List Status (संदर्भ 130435: Version 2025-1)

  Critically Endangered (CR) (A3bce+4bce); Date assessed: 04 July 2024

CITES status (संदर्भ 108899)


CMS (संदर्भ 116361)


Threat to humans

Human uses


| FishSource |

साधन

अधिक जानकारी

Trophic Ecology
Food items (preys)
संघटक आहार
आहार खपत
परभक्षी
पारिस्थितिकी
Population dynamics
बाढ़
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
बहुतायत
Life cycle
पुनरुत्पत्ति
परिपक्व अवधि
Fecundity
मछलीऔ का अंडे देना
Eggs
Egg development
Larvae
Distribution
Physiology
Oxygen consumption

इंटरनेट स्रोत

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, खोज) | Zoological Record

Estimates based on models

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