Ameiurus nebulosus, Brown bullhead : fisheries, aquaculture, gamefish

Ameiurus nebulosus (Lesueur, 1819)

Brown bullhead
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Ameiurus nebulosus
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Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | 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.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

; süßwasser demersal; potamodrom (Ref. 126106); tiefenbereich 0 - 12 m (Ref. 1998). Subtropical; 0°C - 37°C (Ref. 35682); 54°N - 25°N, 104°W - 61°W (Ref. 86798)

Verbreitung Territorien | FAO Gebiete | Ökosysteme | Vorkommen | Punkt Karte | Einführungen | 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.

Länge bei der ersten Reifung / Größe / Gewicht / Alter

Geschlechtsreife: Lm 26.6, range 20 - 33 cm
Max length : 55.0 cm TL Männchen/unbestimmt; (Ref. 40637); common length : 25.0 cm TL Männchen/unbestimmt; (Ref. 556); max. veröff. Gewicht: 2.7 kg (Ref. 40637); max. veröff. Alter: 9 Jahre (Ref. 59043)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 1; Rückenflossenweichstrahlen (insgesamt) : 6 - 7; Afterflossenstacheln: 1. Caudal fin with 18-19 rays.
Body shape (shape guide): fusiform / normal.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Adults occur in pools and sluggish runs over soft substrates in creeks and small to large rivers. Also found in impoundments, lakes, and ponds (Ref. 86798). They rarely enter brackish waters (Ref. 1998). They are nocturnal feeders that feed on mollusks, insects, leeches, crayfish and plankton, worms, algae, plant material, fishes, 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). They have 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).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

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.

Hauptreferenz Laden Sie Ihre Referenzen hoch | Referenzen | Koordinator | Partner

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 Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  nicht bedroht (LC) ; Date assessed: 14 October 2011

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Potential pest





Nutzung durch Menschen

Fischereien: weniger kommerziell; Aquakultur: kommerziell; Sportfisch: ja
FAO - Fischereien: landungen; Publication: search | FishSource |

Mehr Information

Lebenszyklus
Fortpflanzung
Geschlechtsreife
Reifung/Kiemen rel.
Fruchtbarkeit
Ablaichen
Laichaggregationen
Eier
Eientwicklung
Larven
Larven Pop.Dyn.
Anatomie
Kiemenoberfläche
Gehirn
Otolith
Physiologie
Körperliche Zusammensetzung
Nährstoffe
Sauerstoffverbrauch
Schwimmart
Schwimmgeschwindigkeit
Visuelle Pigmente
Fischgeräusche
Krankheiten und Parasiten
Toxizität (LC50s)
Genetik
Genom
Genetik
Heterozygotie
Vererbbarkeit
Genetische Vielfalt
Menschenbezogen
Aquakultur-Systeme
Aquakultur Profile
Zuchtlinien
Ciguatera-Fälle
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Schätzungen auf der Grundlage von Modellen

Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00640 - 0.01081), b=3.12 (3.04 - 3.20), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophische Ebene (Ref. 69278):  3.7   ±0.1 se; based on diet studies.
Widerstandsfähigkeit (Ref. 120179):  mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (K=0.47; tm=3; tmax=8).
Anfälligkeit der Fischerei (Ref. 59153):  Moderate vulnerability (38 of 100). 🛈
Preiskategorie (Ref. 80766):   Unknown.