Hemigrammus tocantinsi Carvalho, Bertaco & Jerep, 2010
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
> Characiformes (Characins) > Acestrorhamphidae (American tetras) > Pristellinae
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335); tocantinsi: Named for the rio Tocantins basin, where the new species occurs; noun in apposition.
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335); tocantinsi: Named for the rio Tocantins basin, where the new species occurs; noun in apposition.
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; 13°S - 14°S, 47°W - 48°W
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
South America: Brazil. Occurs in the tributaries of the rio das Almas, rio Paranã drainage, upper rio Tocantins basin, Goiás State (Ref. 84464).
サイズ / 重さ / 年齢
簡単な記述 検索表 | 形態学 | 形態計測学
Hemigrammus tocantinsi differs from most congeners [except H. bellottii (Steindachner), H. bleheri Géry & Mahnert, H. boesemani Géry, H. brevis Ellis, H. cylindricus Durbin, H. cupreus Durbin, H. erythrozonus Durbin, H. geisleri Zarske & Géry, H. levis Durbin, H. mahnerti Uj & Géry, H. microstomus Durbin, H. mimus Böhlke, H. orthus Durbin, H. rhodostomus Ahl, H. rodwayi Durbin, H. tridens Eigenmann, H. skolioplatus Bertaco & Carvalho, and H. vorderwinkleri Géry] by the number of branched anal-fin rays, 15-17 (vs. less than 15 in H. analis Durbin, H. hyanuary Durbin, H. iota Durbin, and more than 17 on remaining species). From the species with the same range of branched anal-fin rays, Hemigrammus tocantinsi differs by the presence of 1-2 (mode 1) maxillary teeth (vs. 3-11 in H. bellottii, H. cylindricus, H. cupreus, H. mimus, and H. skolioplatus); longitudinal stripe posteriorly broad, larger than one scale depth or than pupil diameter (vs. thinner than one scale depth or pupil diameter or longitudinal stripe absent in H. bellottii, H. boesemani, H. brevis, H. erythrozonus, H. geisleri, H. levis, H. mahnerti, H. microstomus, H. orthus, H. rodwayi, H. tridens, and H. vorderwinkleri); caudal-fin lobes hyaline (vs. presence of a conspicuous broad black marginal or submarginal band across the distal part of caudal-fin lobes in H. bleheri and H. rhodostomus). Furthermore, Hemigrammus tocantinsi can be distinguished from all congeners by the color pattern of live specimens (reddish or orange in male and yellowish pigmented in female).
Lives in streams, in semi-lentic and lotic shallow areas (up to 1 m deep) with riparian vegetation composed by trees and shrubs. This new species was collected syntopically with Aspidoras albater, Astyanax sp., Characidium stigmosum, Corumbataia veadeiros, and Trichomycterus sp. Five specimens (UFRGS 11300, 25.1-27.1 mm SL) with stomach contents mainly composed by Diptera (pupae) and allochthonous insects, but also found were autochthonous insects and digested vegetal matter in a lesser amount (Ref. 84462).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター | 協力者
Carvalho, F.R., V.A. Bertaco and F.C. Jerep, 2010. Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 8(2):247-254. (Ref. 84464)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 潜在的興味の
FAO - Publication: search | FishSource |
より多くの情報
ライフサイクル
繁殖
成熟
成熟度／エラ
生産力
放精
産卵群
卵
卵の開発
幼生
幼生の動力
繁殖
成熟
成熟度／エラ
生産力
放精
産卵群
卵
卵の開発
幼生
幼生の動力
解剖学
カマ
脳
オトリス
カマ
脳
オトリス
生理学
体組成
栄養素
酸素消費
水泳タイプ
泳ぐ速さ
視覚色素
フィッシュ・サウンド
病気と寄生虫
毒性（LC50）
体組成
栄養素
酸素消費
水泳タイプ
泳ぐ速さ
視覚色素
フィッシュ・サウンド
病気と寄生虫
毒性（LC50）
遺伝子の
ゲノム
遺伝子の
ヘテロ接合性
遺伝
遺伝的多様性
ゲノム
遺伝子の
ヘテロ接合性
遺伝
遺伝的多様性
用具
特記事項
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モデルに基づく推定値
|
系統多様性指数 (参照 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00589 (0.00226 - 0.01533), b=3.16 (2.94 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
|
栄養段階 (参照 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
|
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |