Elasmobranchii (sharks and rays) >
Myliobatiformes (Stingrays) >
Urolophidae (Round rays)
Etymology: Urolophus: Greek, oura = tail + Greek, lophos = crest (Ref. 45335).
Eponymy: Gigas was a giant in Greek mythology, the child of Uranus and Gaea. The name is applied to taxa that are giants of their kind. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range ? - 50 m (Ref. 6871). Temperate; 32°S - 42°S
Eastern Indian Ocean: endemic to Australia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 70.0 cm TL male/unsexed; (Ref. 6871)
Occurs on the continental shelf and inshore waters (Ref. 7300, 75154). Found partly covered with sand near seagrass beds (Ref. 6871).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00372 - 0.01775), b=3.08 (2.88 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.6 ±0.4 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): Moderate to high vulnerability (48 of 100).
Nutrients (Ref.
124155): Calcium = 7.02 [1.01, 123.38] mg/100g; Iron = 0.254 [0.023, 2.895] mg/100g; Protein = 20 [15, 25] %; Omega3 = 0.331 [0.098, 0.978] g/100g; Selenium = 8.74 [1.83, 44.59] μg/100g; VitaminA = 7.45 [0.58, 89.54] μg/100g; Zinc = 0.433 [0.032, 4.755] mg/100g (wet weight);
