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Ameiurus nebulosus  (Lesueur, 1819)

Brown bullhead
個人による観察記録の追加 Fish Watcher
Native range | All suitable habitat
This map was computer-generated and has not yet been reviewed.
Ameiurus nebulosus   AquaMaps   Data sources: GBIF OBIS
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Image of Ameiurus nebulosus (Brown bullhead)
Ameiurus nebulosus
Picture by Zienert, S.

分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

条鰭類 > Siluriformes (Catfish) > 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).

環境 / 気候 / 範囲 生態学

; 新鮮な水; 汽水性の 底生の; 深さの範囲 ? - 40 m (Ref. 1998).   Temperate; 0°C - 37°C (Ref. 35682); 54°N - 25°N

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

North America: Atlantic and Gulf Slope drainages from Nova Scotia and New Brunswick in Canada to Mobile Bay in Alabama in USA, and St. Lawrence-Great Lakes, Hudson Bay and Mississippi River basins from Quebec west to Saskatchewan in Canada and south to Louisiana, USA. Introduced into several countries. Several countries report adverse ecological impact after introduction. Asia: Iran and Turkey (Ref. 39702).

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 55.0 cm TL オス/雌雄の選別がない; (Ref. 40637); common length : 25.0 cm TL オス/雌雄の選別がない; (Ref. 556); 最大公表体重: 2.7 kg (Ref. 40637); 最大記録サイズ: 9 年 (Ref. 59043)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 1; 背鰭 (合計): 6-7; 肛門の骨 1. Caudal fin with 18-19 rays.

生物学     用語集 (例 epibenthic)

Occurs in pools and sluggish runs over soft substrates in creeks and small to large rivers. Also found in impoundments, lakes, and ponds. 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 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

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.

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

IUCNのレッドリストの状況は (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

人間に対する脅威

  Potential pest




Human uses

水産業: 少数商業の; 水産養殖: 商業; ゲームフィッシュ: はい
FAO(水産業: 代謝; publication : search) | FisheriesWiki | 私達の周りの海

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インターネットの情報源

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00573 - 0.01519), b=3.07 (2.93 - 3.21), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  3.7   ±0.1 se; Based on diet studies.
回復力 (Ref. 69278):  手段, 1.4年~4.4年の倍増期間の最小個体群 (K=0.47; tm=3; tmax=8).
Prior r = 1.01, 2 SD range = 0.75 - 1.36, log(r) = 0.01, SD log(r) = 0.15, Based on: 1 K, 2 tgen, 1 tmax, records
弱み (Ref. 59153):  Low to moderate vulnerability (30 of 100) .
価格帯 (Ref. 80766):   Unknown.