Megaleporinus piavussu (Britski, Birindelli & Garavello, 2012)
分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Characiformes (Characins) > Anostomidae (Headstanders) > Leporininae
Etymology: Megaleporinus: Name from Greek 'mega' meaning large or largest, plus Leporinus, the genus which most species (now in this genus) were previously assigned; refrring to the large size of most congeners; piavussu: The specific name piavussu is in reference to the common name of the species in upper Rio Paraná basin, 'piavuçu' or 'piavussu', which in indigenous language is a compound name meaning 'piava', term used to designate fishes of the genus Leporinus , and 'ussu' ou 'uçu' a radical that means big, that is, a big sized Leporinus species.
Etymology: Megaleporinus: Name from Greek 'mega' meaning large or largest, plus Leporinus, the genus which most species (now in this genus) were previously assigned; refrring to the large size of most congeners; piavussu: The specific name piavussu is in reference to the common name of the species in upper Rio Paraná basin, 'piavuçu' or 'piavussu', which in indigenous language is a compound name meaning 'piava', term used to designate fishes of the genus Leporinus , and 'ussu' ou 'uçu' a radical that means big, that is, a big sized Leporinus species.
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
; 淡水 底中水层性.
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
South America: endemic to the upper Rio Paraná, Brazil.
大小 / 重量 / 年龄
简单描述 检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 12; 臀鳍软条: 10 - 13. Distinguished from all species of Leporinus except, L.amblyrhynchus, L. conirostris, L. desmotes , L. despaxi, L. elongatus , L. jatuncochi , L.macrocephalus, L. muyscorum, L. obtusidens, L. reinhardti, L. trifasciatus and L. wolfei, by possessing three teeth on premaxilla and dentary (vs. tooth formulae 3/4, 4/4 or 4/3). Can be separated from from L. amblyrhynchus, L. conirostris, L. desmotes, L. despaxi, L. jatuncochi, L. macrocephalus, L. muyscorum, L. reinhardti, L. trifasciatus, and L. wolfei by having three dark rounded blotches on the body and dark transverse bars usually persistent in large specimens (vs. body with a dark midlateral stripe in L. amblyrhynchus, and L. despaxi; transverse dark bands in L. desmotes and L. jatuncochi; body pale except for a single dark blotch on caudal peduncle in L. conirostris; first blotch, below the dorsal fin, transversely elongated in L. macrocephalus, L. trifasciatus and L. wolfei; transverse bars faded in large specimens of L. muyscorum; and blotch on the caudal peduncle longitudinally elongated, not rounded, sometimes making contact with the second blotch in L. reinhardti). Differs from L. elongatus by having 16 circumpeduncular scale rows (vs.12); from very similar species L. obtusidens by having 39 to 40, exceptionally 41, perforated scales on the lateral line (vs. 41 to 43, rarely 44). Individuals of Leporinus piavussu particularly discriminate from individuals of L. piavussu from the upper Rio Paraná basin by having a terminal mouth, its cleft above the horizontal through the ventral orbital margin (vs. mouth directed somewhat or entirely downward, its cleft at the horizontal through the ventral orbital margin or below) (Ref. 93038).
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Distinct pairs breed on densely grown weedy places (Ref. 205).
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Distinct pairs breed on densely grown weedy places (Ref. 205).
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 : Garavello, Júlio | 合作者
Ramirez, J.L., J.L.O. Birindelli and P.M. Galetti Jr., 2017. A new genus of Anostomidae (Ostariophysi: Characiformes): Diversity, phylogeny and biogeography based on cytogenetic, molecular and morphological data. Molecular Phylogenetics and Evolution, 107: 308-323. (Ref. 113781)
CITES
Not Evaluated
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营养生态学
食物（猎物）
食性组成
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成长参数
最大年龄/尺寸
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遗传学
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基于模型的估算
|
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00933 (0.00431 - 0.02019), b=3.06 (2.89 - 3.23), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
|
营养阶层 (参考文献 69278) |
2.6 ±0.1 se; based on size and trophs of closest relatives |
|
回复力 (参考文献 120179) |
中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.). |
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渔业脆弱性 (Ref. 59153) |
Moderate to high vulnerability (48 of 100). 🛈 |