Ελασμοβράγχιοι (καρχαρίες και σαλάχια) (sharks and rays) >
Torpediniformes (Electric rays) >
Narkidae (Sleeper rays)
Etymology: Typhlonarke: Greek, typhlops = blind + Greek, narke = numbness (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά) βαθύβιο(ς); εύρος βάθους 65 - 900 m (Ref. 26346), usually 300 - 400 m (Ref. 114953). Deep-water; 42°S - 47°S, 169°E - 176°E (Ref. 114953)
Southwest Pacific: endemic to New Zealand.
Μέγεθος / Βάρος / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm TL αρσενικό/απροσδιόριστο; (Ref. 114953)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Εδρικές άκανθες: 0. Dark brown dorsally, light brown ventrally (Ref. 26346).
Found on the continental shelf and slope (Ref. 26346). Produces up to 11 pups a litter. Males reaches maturity at 35-40 cm TL; birth size at 9-10 cm TL (Ref. 114953).
Life cycle and mating behavior
Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
Presumably ovoviviparous, with up to 11 young born at 9-10 cm (Ref. 26346).
Cox, G. and M. Francis, 1997. Sharks and rays of New Zealand. Canterbury Univ. Press, Univ. of Canterbury. 68 p. (Ref. 26346)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7502 [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).
Τροφικό Επίπεδο (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (35 of 100).