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Acipenser brevirostrum

(Esturgeon ? Nez Court)

Overview

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Family : Sturgeons ; Inhabit river mouths , lakes , estuaries, and bays ; occasionally enters the open sea . Maximum known age is 67 years for females and 30 years for males. Flesh of good quality; eggs are suitable for caviar[1].

Vulnerable

Threat status

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Czech:

Jeseter Kr, Jeseter Krátkorypý, Jeseter krátkorypý

Common Names in Danish:

Kortsnudet St, Kortsnudet Stør, Kortsnudet stør

Common Names in English:

Pinkster, Short-nosed little sturgeon, shortnose sturgeon

Common Names in Finnish:

Lyhytkuonosampi

Common Names in French:

Esturgeon ? Nez Court, Esturgeon , Esturgeon à museau court, Esturgeon à nez court, Esturgeonà Museau Court, Esturgeonà Nez Court

Common Names in Mandarin Chinese:

短吻鱘, 短吻鲟

Common Names in Spanish:

Esturi?n Hociquicorto, Esturi, Esturión Hociquicorto, Esturión hociquicorto

Common Names in Swedish:

Kortnosad St, Kortnosad Stör, Kortnosad stör

Description

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Physical Description

Size/Age/Growth

Males are commonly 50 cm (Total Length) in length when caught/marketed, but may be as large as 143 cm (Total Length). May live as long as 67 years in the wild, 7 years in captivity.

Habitat

Typically found in a lake at a mean distance from sea level of 51 meters (169 feet).[2]

Ecology: Shortnose sturgeon use of saltwater is generally amphidromous throughout most of the species' range , although far northern populations are anadromous (Kynard 1997). Spawning takes place in upper freshwater areas, while feeding (summering) and wintering occurs in both fresh and saline environments. This species typically spends its entire life history in the natal river and estuary and only rarely moves any great distance in near-coastal marine waters. There are no naturally land-locked populations of the species, but two rivers have populations that are segmented by dams.

This species typically attains an adult size of 75–100 cm total length, though the maximum recorded size for a Canadian-caught female was 1.43 m and 23.6 kg (Dadswell et al. 1984). Maximum ages determined for female and male shortnose sturgeon (again in Canada) were 67 and 32 years, respectively (Vladykov and Greeley 1963). Prespawning migrations in northern populations are triggered by increasing water temperatures of 7–10°C, and during spawning, males are attracted to females by a female pheromone (Kynard and Horgan 2002a). Spawning occurs at water temperatures of 7–15°C. Spawning habitat is a substrate of rock or large gravel (usually rubble ), and water depth during spawning is highly variable. Spawning suitability windows follow day length of 13.9–14.9 h, water temperature of 6.5–15°C, and river discharge that provides 30–120 cm/sec (mean 70 cm/sec) bottom velocity . All spawning windows must be open simultaneously for spawning to occur. Yearling shortnose sturgeon initiate the major dispersal that moves young fish to join older juveniles and adults in fresh or salt water foraging concentration areas. Yearling and older juveniles use the same summering and wintering habitats as adults (Kynard et al. 2000).

In southern waters, shortnose males may mature in 2-3 years and females in 4-6 years. In northern portions of the range, maturation may not occur for 10-15 years (maximum). Spawning periodicity is poorly understood but in the northern part of the range, females are highly variable (2-9 years) and males spawn at 1-5 year intervals depending on fish age and foraging conditions. Some males in northern populations spawn annually.[3].

List of Habitats :

Biology

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Migration

Amphidromous .

Taxonomy

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Synonyms

Acipenser brevirostrisAcipenser brevirostris Brusina • Acipenser brevirostris Brusina, 1902 • Acipenser brevirostris Lesueur • Acipenser brevirostris Lesueur, 1818

Notes

Name Status: Accepted Name .

Last scrutiny: Data last modified by FishBase 22-Mar-1994

Similar Species

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Members of the genus Acipenser

ZipcodeZoo has pages for 36 species and subspecies in this genus:

A. baerii (Long-Nosed Siberian Sturgeon) · A. baerii baerii (Lena River Sturgeon) · A. baerii baicalensis (Baikal Sturgeon) · A. baerii baikalensis (Baikal Sturgeon) · A. baerii stenorrhynchus (Lena River Sturgeon) · A. baeri stenorrhynchus (Lena River Sturgeon) · A. brevirostris (Short-Nosed Little Sturgeon) · A. brevirostrum (Short-Nosed Little Sturgeon) · A. dabryanus (Dabry´s Sturgeon) · A. dauricus (Great Siberian Sturgeon) · A. fulvescens (Lake Sturgeon) · A. gueldenstaedti (Caspian Sturgeon) · A. gueldenstaedtii (Caspian Sturgeon) · A. gueldenstaedti brandt (Azov-Black Sea Sturgeon) · A. huso (European Sturgeon) · A. medirostris (Barbel Sturgeon) · A. mikadoi (Sakhalin Sturgeon) · A. multiscutatus (Japanese Sturgeon) · A. naccari (Adriatic Sturgeon) · A. naccarii (Adriatic Sturgeon) · A. nudiventris (American Atlantic Sturgeon) · A. oxyrhynchus (Atlantic Sturgeon) · A. oxyrhynchus oxyrhynchus (Atlantic Sturgeon) · A. oxyrinchus (American Atlantic Sturgeon) · A. oxyrinchus desotoi (Gulf Sturgeon) · A. oxyrinchus oxyrinchus (American Atlantic Sturgeon) · A. persicus (Persian Sturgeon) · A. plecostomus (Suckermouth Catfish) · A. ruthenus (Sterlet Sturgeon) · A. schrencki (Japanese Sturgeon) · A. schrenckii (Japanese Striped Loach) · A. sinensis (Chinese Sturgeon) · A. stellatus (Stellate Sturgeon) · A. stenorrhynchus (Long-Nosed Siberian Sturgeon) · A. sturio (Atlantic Sturegon) · A. transmontanus (Sacramento Sturgeon)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 01, 2008:

Identifiers

Footnotes

  1. Scott, W.B. (1978). Acipenseridae. In W. Fischer (ed.) FAO species identification sheets for fishery purposes. West Atlantic (Fishing Area 31). Vol. 1. [pag. var.]. FAO, Rome. [back]
  2. Standard Deviation = 103.040 based on 33 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  3. Friedland, K.D. & Kynard, B. 2004. Acipenser brevirostrum. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 29 January 2012. [back]
Last Revised: 2012-07-14