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Polysteganus undulosus (Regan, 1908)

Seventyfour seabream
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Polysteganus undulosus
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South Africa country information

Common names: Seventy-four, Vier-en-sewentig
Occurrence: native
Salinity: marine
Abundance: scarce (very unlikely) | Ref: Smith, J.L.B. and M.M. Smith, 1986
Importance: minor commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Ranges from Natal to the Cape of Good Hope (Ref. 3198). Stock critical/severely depleted; highly esteemed by recreational and commercial line fisheries (Ref. 4332). Also Ref. 3507, 12484.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Smith, J.L.B. and M.M. Smith, 1986
National Database:

Common names from other countries

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Sparidae (Porgies)
Etymology: Polysteganus: Greek, polys = a lot of + Greek, stego, stege = covered (Ref. 45335).
  More on author: Regan.

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

marino asociado a arrecife; oceanodromo (Ref. 51243); rango de profundidad 30 - ? m (Ref. 5213).   Subtropical; 17°S - 30°S

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Western Indian Ocean: southern Mozambique to Durban, South Africa.

Tamaño / Peso / Age

Maturity: Lm ?  range ? - 35 cm
Max length : 120 cm TL macho / no sexado; (Ref. 3507); common length : 80.0 cm TL macho / no sexado; (Ref. 3507); peso máximo publicado: 16.0 kg (Ref. 4699)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 12; Radios blandos dorsales (total) : 10; Espinas anales: 3; Radios blandos anales: 8 - 9.

Biología     Glosario (por ej. epibenthic)

Found over rocky reef and banks of deep waters. Carnivorous species which feeds mainly on fish and squid (Ref. 5213). An excellent food fish. Sold fresh.

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Smith, J.L.B. and M.M. Smith, 1986. Sparidae. p. 580-594. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3198)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (A2bcd); Date assessed: 01 December 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Pesquerías: escaso valor comercial; pesca deportiva: si
FAO(Publication : search) | FishSource |

Más información

Trophic ecology
componentes alimenticios
Diet compositions
Food consumptions
Food rations
Despredadores
Ecology
Ecología
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproducción
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larva
Dinámica larvaria
Distribution
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BRUVS - Videos
Anatomy
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Physiology
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Nutrients
Oxygen consumptions
Tipo de natación
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
Electrophoreses
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Aquaculture systems
Perfiles de acuicultura
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Stamps, coins, misc.
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Referencias

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Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02455 (0.01209 - 0.04986), b=2.96 (2.79 - 3.13), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Nivel trófico (Ref. 69278):  4.1   ±0.60 se; based on food items.
Resiliencia (Ref. 120179):  Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (K=0.18-0.28).
Fishing Vulnerability (Ref. 59153):  High vulnerability (57 of 100).
Price category (Ref. 80766):   Very high.