New Zealand country information

Common names: Flake, Greyboy, Greyshark
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Cox, G. and M. Francis, 1997
Importance: commercial | Ref: Armitage, R.O., D.A. Payne, G.J. Lockley, H.M. Currie, R.L. Colban, B.G. Lamb and L.J. Paul (eds.), 1994
Aquaculture: | Ref:
Regulations: restricted | Ref: Cox, G. and M. Francis, 1997
Uses: gamefish: yes;
Comments: Recorded in trawl surveys in Chathams Island (Ref. 45493) and off the east coast of South Island (Ref. 58461). One of the most common sharks (reaching only about 170 cm TL) in New Zealand inshore waters. In the past, this species was one of the two main shark targets of the Maori; it was caught in large numbers in set nets duing the shark's annual inshore migration and was utilized as food and the liver oil was mixed with red ochre to make the distinctive red paint used by the Maori on their carvinges. A significant proportion of school sharks tagged in New Zealand have crossed the Tasman Sea to Australia. Commercially caught with longlines (Ref. 26346), trawls or set lines (Ref. 9258). Available throughout the year but landings peak during summer months (Ref. 9258). Taken as a non-target species by game fishers. Voucher specimen(s) held at the NMNZ (Ref. 5755). Also Ref. 244, 9987, 13563, 75154.
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

Requin-hâ, Cazón, Акула суповая (=галеус), ... more

التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa

أشلاق (القروش و الشفانين) (sharks and rays) > Carcharhiniformes (Ground sharks) > Triakidae (Houndsharks) > Galeorhininae
Etymology: Galeorhinus: galeo, probably based on G. galeus (see below); rhinus, an ancient name for sharks, from rhine (Gr.), rasp, alluding to their rasp-like skin. (See ETYFish); galeus: From galeos, a small shark or dogfish per Aristotle (sometimes translated as weasel), possibly referring to the pointed snouts, swift movements and/or rapacious feeding behavior of smaller predatory sharks1. (See ETYFish).
More on author: Linnaeus.

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

بحري قاعية التغذية و المعيشة; محيطية (Ref. 51243); نطاق العمق 0 - 1100 m (Ref. 26346), usually 2 - 471 m (Ref. 43939). Subtropical; 70°N - 58°S, 111°E - 37°E

التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | Faunafri

World-wide in temperate waters (Ref. 58085). Western Atlantic: southern Brazil to Argentina. Eastern Atlantic: Iceland, Norway, Faeroe Islands, British Isles to the Mediterranean and Senegal; Namibia to South Africa (Western Indian Ocean). Western Pacific: Australia and New Zealand. Eastern Pacific: British Columbia (Canada) to southern Baja California, Gulf of California; Peru and Chile. Questionable records in Ivory Coast, Nigerai, Gabon to Congo Dem Rep and Laysan Is. (Hawaii) (Ref 244).

Length at first maturity / الحجم / وزن / العمر

Maturity: L_m 144.1, range 120 - 185 cm
Max length : 193 cm TL ذكر/ مختلط الجنس; (Ref. 40637); 195.0 cm TL (female); common length : 160 cm TL ذكر/ مختلط الجنس; (Ref. 9258); أعلا وزن تم نشرة: 44.7 kg (Ref. 40637); العمر: 55 سنين (Ref. 6871)

وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي

الأشواك الظهرية (المجموع) : 0; شوكة شرجية: 0. A large houndshark with a long, pointed snout, a large mouth, and small blade-like teeth; 2nd dorsal about as large as anal fin and terminal caudal lobe as long as rest of fin (Ref. 5578). Greyish above, white below; young with black markings on fins (Ref. 5578).

Mainly demersal on continental and insular shelves, but also on the upper slopes, at depths from near shore to 550 m (Ref. 6871), but has been shown to be pelagic in the open ocean (frequently caught on floating tuna longlines over deep water, and many New Zealand-tagged specimens have been recaptured in Australia) (Ref. 26346). Occurs in small schools that are highly migratory in higher latitudes in their range (Ref. 244). There is pronounced partial segregation by size and sex in some areas (Ref. 244). Feeds on fishes (bottom as well as pelagic species, Ref. 26346), crustaceans, cephalopods, worms, and echinoderms (Ref. 244). Ovoviviparous (Ref. 50449). Targeted for human consumption, liver for squalene oil, fins for soup (Ref. 244); also utilized as fishmeal (Ref. 13563). Marketed fresh, dried-salted, and frozen (Ref. 9987). Adapts well in captivity if carefully captured and handled (Ref. 12951).

Life cycle and mating behavior Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae

Ovoviviparous, without a yolk-sac placenta (Ref. 244). Embryos feed solely on yolk (Ref. 50449). 6 to 52 young in a litter (Ref. 26346). Litter size increases with the size of the mother. Embryos reach 30-36 cm TL at birth (Ref. 6080). In the southern waters of Australia, newly born and older juveniles (30-70 cm long) aggregate in 'nursery areas' found in shallow waters.They move to deeper coastal waters to over-winter. The following spring finds most of these young returning to their nursery areas. The older ones, aged 2 years and over move instead to eastern Bass Strait where most of the immature stock are found. The length of an average full-term embryo is 32 cm. Spawning frequency is once every year, ovulation occurring in early summer and parturition is completed by January of the following year. Gestation period lasts for about 12 months (Ref. 6390, 6871).

المرجع الرئيسي Upload your references | مراجع | المنظم : Compagno, Leonard J.V. | المتعاونين

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

IUCN Red List Status (Ref. 130435)

معرضه للخطر بشكل حرج (CR) (A2bd); Date assessed: 14 February 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Appendix II: Migratory species conserved through agreements

خطر للأنسان

Harmless (Ref. 13563)

استخدامات بشرية

مصائد: ذو قيمة تاجرية عالية; لعبة سمكه: نعم; حوض مائي: احواض مائية عامة

FAO(مصائد: الأنتاج, ملف الأنواع; publication : search) | FishSource | البحر حولنا

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Estimates based on models

Preferred temperature (Ref. 115969): 6.7 - 23.2, mean 12.3 (based on 7314 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00479 (0.00363 - 0.00631), b=2.99 (2.91 - 3.07), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

مستوى غذائي (Ref. 69278): 4.3 ±0.1 se; based on diet studies.

المرونه (Ref. 120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (rm=0.033; tmax=55; Fec=6-52).

Prior r = 0.06, 95% CL = 0.04 - 0.09, Based on 2 full stock assessments.

Fishing Vulnerability (Ref. 59153): Very high vulnerability (76 of 100).

Climate Vulnerability (Ref. 125649): High vulnerability (62 of 100).

فئة السعر (Ref. 80766): Medium.

Galeorhinus galeus (Linnaeus, 1758)