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

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

; स्वच्छ जल, अलवण जल; खारा. Tropical

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

Western Atlantic and Eastern Pacific. Tropical to boreal.

Length at first maturity / आकार / वज़न / Age

Maturity: L_m ? range ? - ? cm Max length : 90.0 cm TL पुल्लिंग / अलिंग; (Ref. 94965); अधिकतम प्रकाशित वज़न: 2.6 kg (Ref. 356)

Short description आकृति विज्ञान

Goose-sized; black overall; long neck and tail; has webbed feet that connects its four toes, allowing it to cling to rocky cliffs and feed on shoaling fish (Ref. 94965).

A coastal species found <50 km offshore (Ref. 356). Nests in the interior of the North American continent and along the coast (Ref. 63805); on unvegetated, rocky outcroppings (Ref. 95237). Are common to abundant winter residents in freshwater and estuarine habitats in the state of Texas (Ref. 95239). Started to colonize the Great Lakes at the beginning of this century, on Lake Superior in 1913-20, and Lake Huron in 1932, returning each season and nesting from April until late September where they form dense colonies in trees or on the ground on small rocky islands. Lake Ontario supported 24% of the breeding population in 1991, and the largest colony of 5,428 nests on Little Galloo Island. Most begin to breed at 3 years of age (Ref. 95240). An opportunistic feeder (Ref. 95224). Exhibits plunge diving (Ref. 356). Generally preys on fish, often feeding in shallow waters (Ref. 95238). Feeds in river estuaries; on out-migrating juvenile salmonids (Oncorhynchus spp.) in the Columbia Basin (Ref. 95220); on alewife (Alosa pseudoharengus) and southeastern catfish (Ictalurus punctatus) (Ref. 95237); on crayfish (Orconectes sp.) (Ref. 95238); on shad (Dorosoma spp.) and sunfishes (Lepomis spp.) (Ref. 60211); on striped mullet (Mugil cephalus) and Gulf menhaden (Brevoortia patronus) in Lavaca Bay; striped mullet and Gulf toadfish (Opsanus beta) in upper Laguna Madre; typically targetting benthic fish or small schooling fishes and forage species (Ref. 95239). Average flight speed recorded at 61 km/h. (Ref. 95241). Preyed on by the bald eagle, Haliateeus leucocephalus (Ref. 95220).

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

Main reference संदर्भ | संयोजक | सहयोगीयो

Lepage, D. 2007. (Ref. 7816)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 09 August 2018

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

| FishSource |

साधन

E-book | कार्यक्षेत्र पथप्रदर्शक

अधिक जानकारी

देश
ऐफ ऐ ओ क्षेत्र
Ecosystems
संयोग
भूमिका
Stocks
पारिस्थितिकी
आहार
खाद्य पदार्थ

आम नाम
उपशब्द
परभक्षी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Fecundity
अंडे
Egg development

Age/Size
बाढ़
Length-weight
Length-length
आकृति विज्ञान
लार्वा
बहुतायत

संदर्भ
Mass conversion

सहयोगीयो
तस्वीरे

इंटरनेट स्रोत

Estimates based on models

Preferred temperature (Ref. 115969): 4.5 - 28.1, mean 12.2 (based on 1418 cells).

लौटाव (Ref. 69278): ऊंचा, न्यूनतम जनसंख्या दुगनी समय अवलागत 15 महीने। (K=9.28-23.13).

Phalacrocorax auritus (Lesson, 1831)