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Pimelodella humeralis Slobodian, Akama & Dutra, 2017

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drawing shows typical species in Heptapteridae.

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> Siluriformes (Catfishes) > Heptapteridae (Three-barbeled catfishes)
Etymology: Pimelodella: Diminutive latinized of greek, pimele = fat + Greek, odous, odella = little teeth (Ref. 45335);  humeralis: Named for the conspicuous dark blotch in the humeral area, a character not observed in any other nominal species of Pimelodella; an adjective..

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の漂泳性; pH range: 4.3 - 4.5.   Tropical; 26°C - 27°C (Ref. 118150)

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South America: Brazil.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 95.8 cm TL オス/雌雄の選別がない; (Ref. 118150)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 1; 背鰭 (合計) : 6; 肛門の骨: 4; 臀鰭: 10 - 11; 脊つい: 47 - 49. The species is distinguished from its congeners by the following set of characters: with a dark anteriorly oblique blotch in the humeral region, its anterior limit slightly ahead of vertical through the spinelet, and its posterior limit at vertical through the base of second branched dorsal-fin ray; 47-49 total vertebrae; 8-11 retrorse triangular, broad-based and strongly inclined dentations confined to basal three-fourths of pectoral-fin spine posterior margin; presence of an unpigmented region dorsally and ventrally adjacent to the dark midlateral stripe; maxillary barbels reaching at least the caudal fin insertion; the longest ray of dorsal-fin 18.7-22.5% SL; subequal caudal-fin lobes; dark midlateral stripe narrow, from pseudotympanum to the caudal-fin insertion, dorsal region of body without dark stripes; dorsal fin with hyaline stripe near base, followed distally by a dark stripe, then another hyaline stripe and distalmost two-fifths dark (Ref. 118150).

生物学     用語集 (例 epibenthic)

Collected along a sandy beach in the middle stretch of the river. Water parameters during the collection event were: 26.1-26.7ºC; pH 4.25-4.46; conductivity 76-77 mS. (Ref. 118150).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

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

Slobodian, V., A. Akama and G.M. Dutra, 2017. A new species of Pimelodella (Siluriformes: Heptapteridae) from the Guiana Shield, Brazil. Zootaxa 4338(1):85-100. (Ref. 118150)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 06 November 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00383 - 0.01808), b=2.97 (2.80 - 3.14), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.0   ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  非常に低い, １４年以上の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  High vulnerability (58 of 100).