Psephurus gladius, Chinese paddlefish : fisheries

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Psephurus gladius (Martens, 1862)

Chinese paddlefish
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Image of Psephurus gladius (Chinese paddlefish)
Psephurus gladius
Juvenile picture by CAFS

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Polyodontidae (Paddlefishes)
Etymology: Psephurus: Greek, psephas, -aos = dark + Greek, oura = tail (Ref. 45335).

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

; marin; eau douce; saumtre dmersal; anadrome (Ref. 117880). Subtropical

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

Asia: China, endemic to the Yangtze River and its tributaries.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 300 cm TL mâle / non sexé; (Ref. 28581); poids max. publié: 300.0 kg (Ref. 28581)

Description synthétique Morphologie | Morphométrie

Head very long, snout extraordinarily long, pointed and paddle-like and base broad; mouth very large.

Biologie     Glossaire (ex. epibenthic)

This species is considered anadromous for it spends at least part of its life in the sea and migrates upriver to reproduce. It occurs in broad surfaced main streams of large rivers, usually staying in the middle and lower layers of the water column and occasionally swims into large lakes. Spawning period is in March and April with spawning sites located in the upper reaches of the Changjiang River but was also reported to take place in the lower Jinsha River between Shuifu and Yibin (Ref. 117880). It grows to 3 m in length and 300 kg in weight (Ref. 28581). Reported length of 7 m SL (Ref. 6866) and 500 kg weight (Ref. 4537, 58490) are doubtful (Paxton, pers. comm.). Piscivorous throughout most of its life. Threatened due to over harvesting and habitat loss (Ref. 58490). Expected number of mature individuals in the wild, less than 50, but more extensive surveys are needed across its range to confirm its existence; last seen in 2003 (Ref. 117880).

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

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)

Statut dans la liste rouge de l'IUCN (Ref. 125652)

  Niveau de menace critique (CR) (A2cd; C2a(i); D); Date assessed: 24 October 2009

CITES


Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial
FAO - pêcheries: Résumé espèce; Publication: search | FishSource |

Plus d'informations

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Écotoxicologie
Reproduction
Maturité
Frai
Rassemblement de ponte
Fécondité
Œufs
Développement de l'œuf
Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
Morphologie
Larves
Dynamique des populations larvaires
Recrutement
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BRUVS
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Aquaculture
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Outils

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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - pêcheries: Résumé espèce; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.2500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00194 - 0.01293), b=3.10 (2.88 - 3.32), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
Niveau trophique (Ref. 69278):  4.2   ±0.73 se; based on food items.
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (tm=5-15).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (87 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Catégorie de prix (Ref. 80766):   Unknown.