Taxonomic Remarks
Thorson et al. (1983b) document the reproductive maturity for males at 32 to 34 cm DW, and at 35 to 45 cm DW for females, which can carry up to 11 fetuses per gestation. Delimitation of type-series of Potamotrygon circularis follows Hartel & Dingerkus (1997). Additional references: Thorson et al. (1983a), Compagno & Cook (1995), Ferreira et al. (1998).
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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=0.01000 (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). |
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栄養段階 (参照 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
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回復力 (参照 120179) |
非常に低い, 14年以上の倍増期間の最小個体群 (Assuming Fec<10). |
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漁業の脆弱性 (Ref. 59153) |
Moderate to high vulnerability (49 of 100). 🛈 |
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価格帯 (Ref. 80766) |
Medium. |