分類 / 名前
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: ivinhemensis: Named for its type locality, Rio Ivinhema basin.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America: Brazil.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 3.0 cm SL オス/雌雄の選別がない; (Ref. 119399); 3.0 cm SL (female)
Found in marginal areas of small first order streams and in wetlands completely exposed to the sun on a slightly undulating terrain at altitudes ranging from 267 to 315 m a.s.l. One of the wetlands was deep (about 70 cm of maximum depth), with muddy substratum and turbid water, while in the other localities wherein the species was recorded, the areas were shallow, not exceeding 20 cm depth, in crystalline waters with a clayey substrate. Eight species recorded to be co-occurring with were: Aphyocharax dentatus, Pyrrhulina australis, Hyphessobrycon anisitsi, Hyphessobrycon eques, Serrapinnus kriegi, Cichlasoma dimerus, Hoplerythrinus unitaeniatus and Moenkhausia sanctaefilomenae (Ref. 119399).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Volcan, M.V., F. Severo-Neto and L.E.K. Lanés, 2018. Unrecognized biodiversity in a world’s hotspot: three new species of Melanorivulus (Cyprinodontiformes: Rivulidae) from tributaries of the right bank of the Rio Paraná basin, Brazilian Cerrado. Zoosyst. Evol. 94(2):263-280. (Ref. 119399)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅危惧 (EN) (B1ab(iii)+2ab(iii)); Date assessed: 23 November 2020
人間の用途
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00315 - 0.01385), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.1 ±0.4 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.).
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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