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Elasmobranchii (sharks and rays) >
Carcharhiniformes
(Ground sharks) >
Carcharhinidae
(Requiem sharks)
Etymology:
Carcharhinus:
karcharos
(Gr.), sharp or jagged;
rhinus
, an ancient name for sharks, from
rhine
(Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (
See ETYFish
)
;
acronotus:
acro-
, from
akron
(Gr.), top, summit or peak;
notus
, from
notos
(Gr.), back, allusion not explained, perhaps referring to “raised” (translation) back at first dorsal fin. (
See ETYFish
)
.
More on author:
Poey
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 9 - 64 m (Ref.
50072
), usually 9 - ? m (Ref.
55176
). Subtropical; 40°N - 37°S, 100°W - 33°W (Ref.
55176
)
Western Atlantic: North Carolina, USA to southern Brazil and Uruguay (Ref.
58839
), including the Gulf of Mexico and the Caribbean.
Length at first maturity / Size / Weight / Age
Maturity: L
m
110.7
, range 87 - 137 cm
Max length : 200 cm TL male/unsexed; (Ref.
244
); max. published weight: 18.9 kg (Ref.
40637
); max. reported age: 20 years (Ref.
108669
)
Found on continental and insular shelves, mainly over sandy, shell, and coral bottoms. Feeds on small fishes, including pinfish (Sparidae) and porcupine fish. Preyed on by larger sharks. Viviparous (with a yolk-sac placenta), with 3 to 6 young per litter. Performs a 'hunch' display, with back arched, caudal lowered and head raised, as a possible threat display when confronted by divers. Utilized dried salted for human consumption. Minimum depth from Ref. 055176.
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
)
Preferred temperature (Ref.
123201
): 22.2 - 28, mean 25.5 °C (based on 520 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00221 - 0.01036), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.4 ±0.5 se; based on diet studies.
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (K=0.12; tm=3; tmax=15; Fec=4).
Fishing Vulnerability (Ref.
59153
): High vulnerability (60 of 100).
Price category (Ref.
80766
):
Medium
.
Nutrients (Ref.
124155
): Calcium = 4.6 [0.8, 24.8] mg/100g; Iron = 0.382 [0.095, 1.094] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.156 [0.059, 0.385] g/100g; Selenium = 13.2 [4.0, 40.1] μg/100g; VitaminA = 34.1 [11.8, 102.7] μg/100g; Zinc = 0.367 [0.171, 0.718] mg/100g (wet weight);
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Page last modified by :
mrius-barile
- 20 July 2016
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