Pseudoscaphirhynchus kaufmanni, Amu Darya sturgeon : fisheries

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Pseudoscaphirhynchus kaufmanni (Kessler, 1877)

Amu Darya sturgeon
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Image of Pseudoscaphirhynchus kaufmanni (Amu Darya sturgeon)
Pseudoscaphirhynchus kaufmanni
Picture by Salnikov, V.B.

Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Pseudoscaphirhynchus: Greek, pseudes = false + Greek, skaphe = boat + Greek, rhyngchos = snout (Ref. 45335).

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

; eau douce; saumtre dmersal; potamodrome (Ref. 51243); profondeur 1 - 2 m (Ref. 109751).   Temperate; 10°C - 20°C (Ref. 2059)

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Asia: Former USSR: Amu Darya River from the Pyandzh to the mouths and lower tributaries. Sometimes in the brackish water of Taldyk Bay, the delta of the Amu Darya in the Aral Sea. Considered close to extinction (Ref. 6866). International trade restricted (CITES II, since 1.4.98; CMS Appendix II). Registered in the 1984 USSR Red Book; 1985 Turkmen SSR Red Data Book; 1996 IUCN Red List; an d1997 CITES Lists (Ref. 35930).

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 45.0  range ? - ? cm
Max length : 75.0 cm TL mâle / non sexé; (Ref. 593); poids max. publié: 2.0 kg (Ref. 593)

Biologie     Glossaire (ex. epibenthic)

Its natural habitat and population have declined due to the breakage of the hydrological regime of the Amu Dariya River. Usual weight not more than 600-700 grams. Females with mature hard roe, very rare. Apparently sensitive to oxygen content in the water, changes in its chemical content, and to pollution. Fishing is prohibited (Ref. 35930). Spawns at 16° C (Ref. 719).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Berg, L.S., 1962. Freshwater fishes of the U.S.S.R. and adjacent countries. volume 1, 4th edition. Israel Program for Scientific Translations Ltd, Jerusalem. (Russian version published 1948). (Ref. 593)

Statut dans la liste rouge de l'IUCN (Ref. 123251)

  Niveau de menace critique (CR) (A2c); Date assessed: 24 October 2009

CITES (Ref. 118484)


Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial
FAO(pêcheries: Résumé espèce; publication : search) | FishSource |

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Écotoxicologie
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Maturité
Frai
Rassemblement de ponte
Fécondité
Œufs
Développement de l'œuf
Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00146 - 0.00716), b=3.16 (2.97 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.4   ±0.3 se; based on diet studies.
Generation time: 6.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (K=0.16; tm=6-7).
Vulnérabilité (Ref. 59153):  High vulnerability (55 of 100) .
Catégorie de prix (Ref. 80766):   Unknown.