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Ameiurus nebulosus (Lesueur, 1819)

Brown bullhead
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Ameiurus nebulosus
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Poland country information

Common names: Sumik karlowaty
Occurrence: introduced
Salinity: freshwater
Abundance: common (usually seen) | Ref: Solarz, W., 2005
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: First released to ponds in the Western Pomeranian Province (Ref. 92885). Established in open waters like the Bug, Oder, Vistula, Warta and San rivers (Ref. 92885). Invaded slowly flowing waters, eutrophic lakes, clay-pits and canals. Expansion was assisted by intentional introductions carried out by angling associations, fish pond's owners, accidental mixture to stocking material of other species as well as use as libe bait (Ref. 92885). Tolerates oxygen deficit, unfavourable temperature and pollution. Severely displaced and competed with several species of limnophilous fishes (Ref. 55773). Also Ref. 1739.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pl.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Grabowska, J., J. Kotusz and A. Witkowski, 2010
National Database:

Common names from other countries

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

> Siluriformes (Catfishes) > Ictaluridae (North American freshwater catfishes)
Etymology: Ameiurus: Greek, a = without + Greek, meiouros, -os, -on = without tail (Ref. 45335);  nebulosus: nebulosus meaning clouded, in relation to mottled and grey coloring (Ref. 1998).
  More on author: Lesueur.

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

; agua dulce demersal; rango de profundidad 0 - 12 m (Ref. 1998).   Subtropical; 0°C - 37°C (Ref. 35682); 54°N - 25°N, 104°W - 61°W (Ref. 86798)

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

North America: Atlantic and Gulf Slope drainages from Nova Scotia and New Brunswick in Canada to Mobile Bay in Alabama in USA; St. Lawrence-Great Lakes, Hudson Bay, and Mississippi River basins from Quebec west to southeastern Saskatchewan in Canada, and south to Louisiana, USA. Introduced into several countries. Several countries report adverse ecological impact after introduction.

Length at first maturity / Tamaño / Peso / Age

Maturity: Lm 26.6, range 20 - 33 cm
Max length : 55.0 cm TL macho / no sexado; (Ref. 40637); common length : 25.0 cm TL macho / no sexado; (Ref. 556); peso máximo publicado: 2.7 kg (Ref. 40637); edad máxima reportada: 9 años (Ref. 59043)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 1; Radios blandos dorsales (total) : 6 - 7; Espinas anales: 1. Caudal fin with 18-19 rays.

Biología     Glosario (por ej. epibenthic)

Occurs in pools and sluggish runs over soft substrates in creeks and small to large rivers. Also found in impoundments, lakes, and ponds (Ref. 86798). Rarely enters brackish waters (Ref. 1998). A nocturnal feeder that feeds mollusks, insects, leeches, crayfish and plankton, worms, algae, plant material, fishes and has been reported to feed on eggs of least cisco, herring and lake trout (Ref. 1998). Juveniles (3-6 cm) feed mostly on chironomid larvae, cladocerans, ostracods, amphipods, bugs and mayflies (Ref. 1998). Can tolerate high carbon dioxide and low oxygen concentrations and temperatures up to 31.6 °C although experiments show upper lethal temp. to be 37.5 °C; resistant to domestic and industrial pollution (Ref. 1998). Has been observed to bury itself in mud to escape adverse environmental conditions (Ref. 1998). Prepared hot-smoked and also cooked in various ways (Ref. 1998).

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

Nests are built by one or both sexes. After a period of caressing each other with their barbels, male and female settle over the nest, face opposite directions (while maintaining body contact) and spawn. Although eggs are cared for by one or both parents, there have been reports of parents eating their own eggs. Caring entails fanning by the paired fins, moving and stirring by the barbels, and may be picked up and ejected from the mouth; this ensures hatching.

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 14 October 2011

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Potential pest




Human uses

Pesquerías: escaso valor comercial; Acuicultura: comercial; pesca deportiva: si
FAO(pesquerías: producción; publication : search) | FishSource |

Más información

Life cycle
Reproducción
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larva
Dinámica larvaria
Anatomy
Gill areas
Cerebros
Otolitos
Physiology
Body compositions
Nutrients
Oxygen consumptions
Tipo de natación
Swimming speeds
Visual pigment(s)
Sonidos de peces
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Perfiles de acuicultura
Razas
Ciguatera cases
Stamps, coins, misc.
Outreach
Colaboradores
References
Referencias

Herramientas

Special reports

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Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00540 - 0.01405), b=3.09 (2.95 - 3.23), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Nivel trófico (Ref. 69278):  3.7   ±0.1 se; based on diet studies.
Resiliencia (Ref. 120179):  Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (K=0.47; tm=3; tmax=8).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (38 of 100).
Price category (Ref. 80766):   Unknown.