分類 / Names
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Siluriformes (Catfishes) >
Pimelodidae (Long-whiskered catfishes)
Etymology: Pimelodus: Greek, pimele = fat + Greek, odous = teeth (Ref. 45335); stewarti: Named for Donald Stewart, in recognition of his many contributions to catfish systematics.
Eponymy: Dr Donald James Stewart (d: 1946) is Professor of Environment & Forest Biology at the College of Environmental Science and Forestry, State University of New York, Syracuse, where he presently teaches Ichthyology & Tropical Ecology. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / 深さの範囲 / distribution range
生態学
; 新鮮な水 底生の. Tropical
South America: Rio Tocantins drainage in Brazil.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 6.6 cm SL オス/雌雄の選別がない; (Ref. 79502)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 2; 背鰭 (合計) : 6 - 7; 脊つい: 40. Differs from its congeners, except Pimelodus halisodous, Pimelodus joannis, Pimelodus ornatus and Pimelodus pictus, by having the following characters: distal portion of dorsal-fin rays 2-4 with a dark spot; just anterior to dorsal fin with dark transverse band; shorter distance between the posterior nostril and the anterior orbital border (posterior nostril closer to anterior orbital border. Can be separated from Pimelodus ornatus and Pimelodus pictus by its flank with uniform gray coloration lateral line with a light narrow band; from Pimelodus joannis by having a greater posterior cleithral-process length (12.7-15.6 vs. 10.2-12.4% of SL) and by lacking dark blotches on the caudal-fin base and from Pimelodus halisodous by a smaller pectoral- spine length (15.4-19.6 vs. 20.0-23.5% of SL); a shorter snout (36.1-40.9 vs. 43.1-47.9% of HL); and by having fewer rows of premaxillary teeth (5-8 vs. 13-16) (Ref. 79502).
Body shape (shape guide): elongated.
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ribeiro, F.R.V., C.A.S. Lucena and P.H.F. Lucinda, 2008. Three new Pimelodus species (Siluriformes: Pimelodidae) from the rio Tocantins drainage, Brazil. Neotrop. Ichthyol. 6(3):455-464. (Ref. 79502)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-1)
Human uses
用具
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00301 - 0.01516), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
回復力 (参照
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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