Heterodontus zebra (Gray, 1831)

Zebra bullhead shark
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Heterodontus zebra
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Classification / Names आम नाम | उपशब्द | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) > Heterodontiformes (Bullhead and horn sharks) > Heterodontidae (Bullhead, horn, or Port Jackson sharks)
Etymology: Heterodontus: Greek, heteros = other + Greek, odous = teeth (Ref. 45335).  More on author: Gray.

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

; समुद्री प्रवाल-भित्ति संयुक्त; गहराई सीमा 0 - 200 m (Ref. 6871).   Subtropical; 40°N - 20°S, 103°E - 155°E

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

Western Pacific: Japan to northwestern Australia (Ref. 6871) and Queensland.

Length at first maturity / आकार / वज़न / Age

Maturity: Lm ?, range 84 - ? cm
Max length : 125 cm TL पुल्लिंग / अलिंग; (Ref. 2334)

Short description आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण): 2; पृष्ठीय सौफट रेज़ (सम्पूर्ण): 0; गुदा कांटा 0; ऐनल सौफट रेज़: 0. The Zebra bullhead shark, Heterodontus zebra, has a large blunt head, low supra-orbital crest gradually sloping behind eyes, dorsal fin spines, anal fin, and zebra-pattern of dark, narrow vertical bands on a pale background (Ref. 9838; 6871). As characteristic of members of the family, caudal fin with a moderately long dorsal lobe and moderately long ventral lobe, the latter shorter than the dorsal lobe, vertebral axis raised into caudal-fin lobe (Ref.9838).

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

A common but little-known shark found on the continental and insular shelves in depths down to at least 50 m (Ref. 247, 11230) in the South China Sea, but deeper and in 150 - 200 meters off Western Australia (Ref. 43278). Probably feeds on bottom invertebrates and small fishes (Ref. 6871). Oviparous (Ref. 247).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace (Ref. 205). Lays auger type eggs (about 12-18cm, 4.7-7 inches long) among rocks & kelp, often with more than female using same oviposition site, with as many eggs found in a single nest; female lay 2 eggs at a time, from spring to late summer in Japan, 6-12 times during a single spawning season. Eggs hatch in 1 year. Hatch at 18 cm (7 inches), max length at 1.2m (3.9 ft.). During courtship, male grasps pectoral fin of female & wraps posterior part of body under her so single clasper can be inserted into her cloaca. In several mating bouts observed, copulation lasted as long as 15 minutes (Ref. 12951).

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

Compagno, L.J.V., 2001. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Vol. 2. Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO Spec. Cat. Fish. Purp. 1(2):269 p. FAO, Rome. (Ref. 43278)

IUCN Red List Status (Ref. 119314)

  Least Concern (LC) ; Date assessed: 30 April 2003

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Traumatogenic





Human uses

मात्स्यिकी: लघु वाणिज्य; जलजीवालय: संभावित
FAO(मात्स्यिकी: species profile; publication : search) | FishSource |

अधिक जानकारी

आम नाम
उपशब्द
चपायचय
परभक्षी
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पुनरुत्पत्ति
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मछलीऔ का अंडे देना
Spawning aggregation
Fecundity
अंडे
Egg development
Age/Size
बाढ़
Length-weight
Length-length
Length-frequencies
मौरफोमैटरिक्स
आकृति विज्ञान
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इंटरनेट स्रोत

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 15.4 - 26.6, mean 21.8 (based on 223 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5059   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00156 - 0.00844), b=3.15 (2.94 - 3.36), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.0   ±0.66 se; Based on food items.
लौटाव (Ref. 69278):  निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Fec assumed to be <100).
Vulnerability (Ref. 59153):  High to very high vulnerability (73 of 100) .
Price category (Ref. 80766):   Unknown.