Elasmobranchii (haaien en roggen) (sharks and rays) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Neotrygoninae
Etymology: yakkoei: Name 'yakkoei' is derived from the standard Japanese name 'yakkoei' (meaning ?).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien rifbewoner; diepte 8 - 60 m (Ref. 137605). Subtropical
Northwest Pacific: Japan.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 35.0 cm WD mannelijk / geslacht onbekend; (Ref. 137605); 42.5 cm WD (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
This species is distinguished by the following set of characters: when fresh, body greenish brown with single dark mask-like marking between eyes (often indistinct); there are fewer spots (mean 20.4); small pale blue spots (in fresh) surrounded by dark brown outer rings [1.2-3.4% DW (2.6% DW)]; longer head length (35.9–43.4% DW; mean 39.1% DW) (Ref. 137605).
Body shape (shape guide): other; Cross section: flattened.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Hata, H. and H. Motomura, 2024. Neotrygon yakkoei, a new bluespotted maskray (Dasyatidae) from Japan. Ichthyol. Res. 72(2):229-239. (Ref. 137605)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van geen belang
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00352 - 0.03419), b=3.12 (2.87 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.4 ±0.3 se; based on size and trophs of closest relatives
Kwetsbaarheid van de visserij (Ref.
59153): Moderate vulnerability (40 of 100).
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