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Anguilliformes (Eels and morays) >
Ophichthidae (Snake eels) > Ophichthinae
Etymology: Yirrkala: Named for its type locality Yirrkala, Caledon Bay, Gulf of Carpentaria, Queensland, Australia; calyptra: Name from Greek word meaning veil, referring to its facial coloration; noun in apposition.
More on author: McCosker.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina bottenlevande. Tropical
Western Pacific: Australia (Queensland).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 35.8 cm TL hane/ej könsbestämd; (Ref. 86861); 39.5 cm TL (female)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Ryggkotor: 144 - 147. This species is distinguished by the following unique set of characters: head 6.3-6.6% of total length (TL); tail 46-49% of TL; dorsal fin origin is nearly above gill openings; eye behind middle of upper jaw; supraorbital pores 4; teeth are conical, minute, uniserial on jaws and posteriorly on vomer; colour yellowish, slightly darker dorsally, a distinctive black band from rear of orbit to rictus; total vertebrae 144-147; mean vertebral formula 7-75-146 (n=4) (Ref. 86861).
Body shape (shape guide): eel-like.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
McCosker, J.E., 2011. Two new Indo-Pacific species of the sand-eel genus Yirrkala (Anguilliformes: Ophichthidae). Smithiana Bulletin 13:45-50. (Ref. 86861)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00093 (0.00041 - 0.00212), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.7 ±0.6 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low to moderate vulnerability (26 of 100). 🛈 |