New Zealand country information

Common names: Rough skate, Uku
Occurrence: endemic
Salinity: marine
Abundance: common (usually seen) | Ref: Cox, G. and M. Francis, 1997
Importance: commercial | Ref: Cox, G. and M. Francis, 1997
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Most common New Zealand skate (Ref. 26346). Occurs throughout the country (Ref. 9258) and usually found in coastal waters (Ref. 9258). Found in Chathams Island (Ref. 45493) and off the east coast of South Island (Ref. 58461). Large numbers caught in commercial trawls and the wings are sold locally or exported to Europe, especially France (Ref. 26346). Voucher specimen(s) held at the NMNZ (Ref. 5755). Also Ref. 6871, 9258.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/nz.html
National Fisheries Authority: http://www.fish.govt.nz/
Occurrences: Occurrences Point map
Main Ref: Cox, G. and M. Francis, 1997
National Database:

Common names from other countries

Rough skate, Brown rough skate, Raya áspera neozelandesa, ... more

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

Ελασμοβράγχιοι (καρχαρίες και σαλάχια) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: More on authors: Müller & Henle.

Environment: milieu / climate zone / depth range / distribution range Οικολογία

Θαλασσινό(ά) βενθικό(ς); εύρος βάθους 10 - 1500 m (Ref. 26346). Temperate

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

Southwest Pacific: endemic to New Zealand.

Length at first maturity / Μέγεθος / Βάρος / Age

Maturity: L_m 59.0 range ? - ? cm
Max length : 118 cm TL αρσενικό/απροσδιόριστο; (Ref. 26346); common length : 62.0 cm TL αρσενικό/απροσδιόριστο; (Ref. 9258); μεγ. αναφερόμενη ηλικία: 9 έτη (Ref. 47618)

Short description Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία

Brown dorsally, mottled with white and black spots, and a large dark blotch on each wing; white ventrally (Ref. 26346).

Inhabit the continental shelf and upper slope (Ref. 26346); usually in coastal waters (Ref. 9258). Found partially buried in sand (Ref. 26346). Feed on fish, shellfish, crabs, and worms (Ref. 114953, 26346). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 10.2-12.7 cm long and 6.3-8.3 cm wide (Ref. 41249, 41308).

Life cycle and mating behavior Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Young hatching at about 18-20 cm (Ref. 26346). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

Main reference Upload your references | Αναφορές | Συντονιστής : McEachran, John | Συνεργάτες

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

IUCN Red List Status (Ref. 130435)

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

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

αλιεία: Εμπορικό(ά)

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Διαδικτυακές πηγές

Estimates based on models

Preferred temperature (Ref. 115969): 7.4 - 12.6, mean 9.2 (based on 95 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00282 (0.00133 - 0.00596), b=3.25 (3.08 - 3.42), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Τροφικό Επίπεδο (Ref. 69278): 3.7 ±0.57 se; based on food items.

Ελαστικότητα (Ref. 120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): High vulnerability (59 of 100).

Climate Vulnerability (Ref. 125649): High to very high vulnerability (70 of 100).

Price category (Ref. 80766): Medium.

Zearaja nasuta (Müller & Henle, 1841)