Gymnotus capitimaculatus Rangel-Pereira, 2014
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
> Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); capitimaculatus: Derived from the Latin subject capitis (head) and adjective maculatus (blotchy), in reference to the presence of a pair of blotches in the ventral portion of the head.
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335); capitimaculatus: Derived from the Latin subject capitis (head) and adjective maculatus (blotchy), in reference to the presence of a pair of blotches in the ventral portion of the head.
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. Tropical
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: Rio do Ouro, rio Jucuruçu basin in Brazil.
サイズ / 重さ / 年齢
簡単な記述 検索表 | 形態学 | 形態計測学
Gymnotus capitimaculatus belongs to the Gymnotus pantherinus species-group, characterized by having a slender body (body depth 7.2-8.9 % of TL), proximal portion of the fifth rib with broad triangular ridge, more than three times width of the sixth rib (vs. narrow ridge, less than three times width of the sixth rib) and one laterosensory pore in the dorso-posterior portion of the preopercle, in the preopercular-mandibular canal (vs. two pores). It differs from all congeners by having a pair of round blotches anteriorly positioned or under vertical passing through eye, on ventral portion of the head. It can be diagnosed from all members of the G. pantherinus species-group (sensu) by the following unique combination of characters: tail with a unique series of bands or round spots (vs. tail with randomly disposed spots, never forming a unique series); precaudal portion of the trunk lacks bands or with rounded and/or vermiculated spots scattered all over it (vs. with well defined bands); 45 precaudal vertebrae (vs. 31-43 or 46-51); 9 scales above lateral line at mid-body (vs. 6-8 or 10); anal fin base length 75.2-78.6 % of TL (vs. 62.9-74.7 or 79-83.8 %); anus-anal fin length 101.4-122.8 % of HL (vs. 50-96.3 %); and branchial opening 38.5-45.0 % of HL (vs. 24-35) (Ref. 96661).
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Occurs in clear water stream with topical width of about 1.5 m, depth range from 0.1 to 1 m and bottom consisting of sand and small gravel. Individuals were deeply hidden among marginal vegetation and roots, mostly where the water flow was faster. Inhabits sympatrically with another species of Gymnotus belonging to the G. carapo species group, but not syntopically (Ref. 96661).
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 : Campos-da-Paz, Ricardo | 協力者
Rangel-Pereira, F.S., 2014. Gymnotus capitimaculatus, a new species of electric fish from rion Jucuruçu basin, northeastern Brazil (Ostariophysi: Gymnotiformes: Gymnotidae). Vert. Zool. 64(2):169-175. (Ref. 96661)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅寸前の危機的状況 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 03 November 2020
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
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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インターネットの情報源
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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=0.00427 (0.00202 - 0.00902), b=2.98 (2.79 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
|
栄養段階 (参照 69278) |
3.3 ±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 (15 of 100). 🛈 |