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Typhlonarke aysoni (Hamilton, 1902)

Blind electric ray
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Native range | All suitable habitat | Point map | Year 2050
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Typhlonarke aysoni   AquaMaps   Data sources: GBIF OBIS
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Image of Typhlonarke aysoni (Blind electric ray)
No image available for this species;
drawing shows typical species in Narkidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (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 Ecology

Marine; bathydemersal; depth range 65 - 900 m (Ref. 26346), usually 300 - 400 m (Ref. 114953). Deep-water; 42°S - 47°S, 169°E - 176°E (Ref. 114953)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southwest Pacific: endemic to New Zealand.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref. 114953)

Short description Identification keys | Morphology | Morphometrics

Anal spines: 0. Dark brown dorsally, light brown ventrally (Ref. 26346).

Biology     Glossary (e.g. epibenthic)

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 | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Presumably ovoviviparous, with up to 11 young born at 9-10 cm (Ref. 26346).

Main reference Upload your references | References | Coordinator : Carvalho, Marcelo | Collaborators

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)

  Least Concern (LC) ; Date assessed: 22 June 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
Trophic level (Ref. 69278):  3.3   ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (35 of 100).