Taxonomic Remarks
A population in the South Black Sea that has alternatively and repetitively been considered as a subspecies or a synonym of 2 species, or a valid species. Although more published taxonomic evidence (morphological or genetic) would be required, following several authors, the species is considered valid here for conservation purposes. But it may represent an ecomorph only. Probably a case of speciation at the edge of distribution of the ancestral species.
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Phylogenetischer Diversitätsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00295 (0.00133 - 0.00656), b=3.18 (3.01 - 3.35), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
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Trophische Ebene (Ref. 69278) |
3.4 ±0.3 se; based on size and trophs of closest relatives |
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Widerstandsfähigkeit (Ref. 120179) |
sehr niedrig, Verdopplung der Population dauert mehr als 14 Jahre. (Preliminary K or Fecundity.). |
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Anfälligkeit der Fischerei (Ref. 59153) |
Very high vulnerability (87 of 100). 🛈 |