Potamotrygon motoro (Müller & Henle, 1841)
South American freshwater stingray
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
More on authors: Müller & Henle.
Taxonomic Remarks
Authorship of species is credited to Müller & Henle (1841) and not Naterrer (who collected the type specimen) as in Rosa (1985a). A widespread species that may require further subdivision after more study. Studies of its reproductive biology indicate that females attain sexual maturity between 24 and 32 cm DW (males between 20 and 30 cm DW), and may produce from three to 21 embryos per gestation (Achenbach & Achencbach, 1976) or only six or seven (Thorson et al., 1983b; these differences may be populational). Larger specimens may weigh 10 kg. This species has been captively bred in aquaria, but is still the most comercially imported species by the aquarium industry. Additional references: Bertin (1939), Castex & Castello (1970b), Achenbach & Achenbach (1976), Thorson et al. (1983b), Sérét & McEachran (1986), Ortega & Vari (1986), Paepke & Schmidt (1988), Barriga (1991), Compagno & Cook (1995), Lasso et al. (1997a), Ferreira et al. (1998), Britski et al. (1999).
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
南美洲: 烏拉圭, Parana-巴拉圭，奧里諾科河與亞馬遜河流域。
大小 / 重量 / 年齡
Max length : 50.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 36687); 最大體重: 34.2 kg (Ref. 85107)
發現於淡水的河了。 它是一個非常危險的種。 最大的長度在 Axelrod 等人報告。,1991(參考文獻 6398) 是 100 公分TL。
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 : Carvalho, Marcelo | 合作者
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基於模型的估計
|
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
|
營養階層 (參考文獻 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
| Generation time | 6.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
|
回復力 (參考文獻 120179) |
低的, 最小族群倍增時間4.5 - 14 年 (Fec=16). |
|
釣魚的脆弱性 (Ref. 59153) |
Moderate to high vulnerability (53 of 100). 🛈 |
|
價格種類 (Ref. 80766) |
Medium. |