分类 / Names
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Teleostei >
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
生态学
; 淡水 居于水底的; 深度上下限 0 - 12 m (Ref. 1998). 溫帶; 0°C - 37°C (Ref. 35682); 54°N - 25°N, 104°W - 61°W (Ref. 86798)
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.
北美洲: 到在美國, 與聖勞倫斯河-五大湖區中的在阿拉巴馬州的摩比灣的大西洋斜坡與海灣斜坡流域從新斯科舍省與加拿大的新布蘭斯維克來自魁北克的哈得遜灣與密西西比河流域西至加拿大的薩斯卡萬而且南至美國路易斯安那州。 引入一些國家中了。 引入後的一些國家報告不利的生態衝擊。 亞洲: 伊朗與土耳其.(參考文獻 39702)
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 26.6, range 20 - 33 cm
Max length : 55.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 40637); common length : 25.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 556); 最大体重: 2.7 kg (Ref. 40637); 最大年龄: 9 年 (Ref. 59043)
背棘 (总数) : 1; 背的软条 (总数) : 6 - 7; 臀棘: 1. Caudal fin with 18-19 rays.
尾鳍有 18-19个鳍条。
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).
在小溪与小型到大型河川中出现于在软的底部上的水潭与滞流的小支流。 也发现于圈围水域，湖与池塘。 很少进入半咸淡水域。 (参考文献 1998) 吃软件动物，昆虫，水蛭, 小龙虾与浮游生物，蠕虫，藻类，植物的一个夜行的捕食者 , 鱼而且已经被报告觅食最少的鱼曹白鱼之类，鲱鱼与鳟鱼的卵.(参考文献 1998) 稚鱼 (3-6 公分) 大部分吃宝刀鱼仔鱼，水蚤，介形虫，片脚类动物，虫与孚游类。 (参考文献 1998) 虽然实验显示致命温度上限是 37.5 °C ，能容忍高二氧化碳与溶氧量低的集中与温度高达 31.6 °C; 有抵抗性到家庭的与工业污染.(参考文献 1998) 曾经观察埋头于泥到逃脱不利的环境状况.(参考文献 1998) 在各种不同的方面以烟熏调理以及煮了或热烟熏的.(参考文献 1998)
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.北美洲: 到在美國, 與聖勞倫斯河-五大湖區中的在阿拉巴馬州的摩比灣的大西洋斜坡與海灣斜坡流域從新斯科舍省與加拿大的新布蘭斯維克來自魁北克的哈得遜灣與密西西比河流域西至加拿大的薩斯卡萬而且南至美國路易斯安那州。 引入一些國家中了。 引入後的一些國家報告不利的生態衝擊。 亞洲: 伊朗與土耳其.(參考文獻 39702)
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)
人类利用
渔业: 低经济; 养殖: 商业性; 游钓鱼种: 是的
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
营养阶层 (Ref.
69278): 3.7 ±0.1 se; based on diet studies.
回复力 (Ref.
120179): 中等的, 族群倍增时间最少 1.4 - 4.4年 (K=0.47; tm=3; tmax=8).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (38 of 100).
