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> Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Paramormyrops: Greek, para = near + Greek, mormyros = a fish (Sparus sp) (Ref. 45335); sphekodes: The name sphekodes comes from the Greek, σφήκα, for wasp, which may refer to the fish's elongate and slender body (Ref. 116799).
More on author: Sauvage.
Etymology: Paramormyrops: Greek, para = near + Greek, mormyros = a fish (Sparus sp) (Ref. 45335); sphekodes: The name sphekodes comes from the Greek, σφήκα, for wasp, which may refer to the fish's elongate and slender body (Ref. 116799).
More on author: Sauvage.
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
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
Africa: Ogowe River and other coastal river basins in Cameroon, Gabon and Republic of Congo (Ref. 81635). Possibly a narrowly distributed species, endemic to a relatively small part of the upper Ogowe River basin (Ref. 116799). Reports from the Congo River basin (Ref. 1878, 3203, 51193, 88779, 120641) unconfirmed in other sources (Ref. 81635, 116799).
サイズ / 重さ / 年齢
簡単な記述 検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0; 背鰭 (合計) : 20 - 23; 肛門の骨: 0; 臀鰭: 24 - 28; 脊つい: 43 - 45. Diagnosis: Paramormyrops sphekodes is distinguished from all other Paramormyrops by this combination of characters: 5 teeth in upper jaw, 6 in lower; 12 circumpeduncular scales; sharp head profile, V-shaped when viewed from above; snout angle 48-56° corresponding to an interorbital width 1-1.36 times the snout length; body depth 15.4-17.31% of standard length, body depth at pectoral fin 84-94% of body depth at urogenital pore; eye diameter 13-16% of head length measured from snout tip to posterior edge of bony operculum; snout length 24-27% of head length; ration of head length to depth 1.1-1.24; head length 21-23% of standard length; EOD waveform with two phases, head-positive then negative, EOD duration 1.635 ± 0.226 ms with a corresponding power spectrum peak at 1573 ± 531 Hz; electric organ composed of type NPp electrocytes, that is having Non-Penetrating stalks innervated on the posterior face of the cell (Ref. 116799). With five teeth in the upper jaw and six in the lower, P. sphekodes differs from P. hopkinsi, P. jacksoni and P. tavernei, which have seven or more teeth in the upper jaw and eight or more in the lower jaw; with 12 circumpeduncular scales, it differs from P. longicaudatus, P. batesii and P. tavernei, which all have 16 or more; with its relatively sharp V-shaped head profile, it differs from P. batesii, P. gabonensis, P. retrodorsalis, P. tavernei and P. kingsleyae which have distinctly blunt or U-shaped snouts; Paramormyrops sphekodes has type NPp electrocytes in its electric organ, as do seven other Paramormyrops from Lower Guinea, while P. batesii and P. kingsleyae have electric organs composed of electrocytes with penetrating stalks innervated on the anterior face (Ref. 116799). Paramormyrops sphekodes differs from P. curvifrons in head and snout shape; head and snout are shorter, deeper and more rounded when viewed laterally in P. sphekodes compared to P. curvifrons; Paramormyrops curvifrons also has a downward sloping forehead, protruding snout and enlarged chin; the ratio head length to standard length is 23.5-26.9 in P. curvifrons, higher than 21.5-23.4 in P. sphekodes, while the ratio of head depth to head length is reduced in P. curvifrons compared to P. sphekodes; the ratio of pre-pectoral distance to pre-dorsal distance is greater in P. curvifrons compared to P. sphekodes, and P. curvifrons has a significantly narrower snout than P. sphekodes measured by either snout angle or ratio interorbital width to snout length (Ref. 116799).
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
Found in large river habitats with rocky bottoms, sandy substrate, with rushing water and rapids (Ref. 116799).
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
Hopkins, C.D., S. Lavoué and J.P. Sullivan, 2007. Mormyridae. p. 219-334. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81635)
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
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 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01259 (0.00585 - 0.02711), b=2.86 (2.68 - 3.04), 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 ±0.3 se; based on size and trophs of closest relatives |
|
回復力 (参照 120179) |
手段, １．４年～４．４年の倍増期間の最小個体群 (Assuming Fec < 5,000). |
|
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (14 of 100). 🛈 |