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Iago omanensis, Bigeye houndshark : fisheries
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Iago omanensis
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Elasmobranchii (sharks and rays) >
Carcharhiniformes
(Ground sharks) >
Triakidae
(Houndsharks) > Galeorhininae
Etymology:
Iago:
Name of villain in Shakespeare’s
Othello
, because members of this genus have been a “troublemaker for systematists and hence a kind of villain”. (
See ETYFish
)
;
omanensis:
-ensis
, Latin suffix denoting place: Gulf of Oman, type locality. (
See ETYFish
)
.
More on author:
Norman
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 110 - 2195 m (Ref.
244
). Deep-water; 30°N - 10°N
Western Indian Ocean: Red Sea, Gulf of Aqaba (Ref.
9942
) and Gulf of Oman to Pakistan and southwestern India. A low-finned, somewhat short-headed
Iago
is largely sympatric with
Iago omanensis
at least off southwestern India, and in the Bay of Bengal there is possibly a dwarf,
omanensis
-like
Iago
that may or may not be distinct.
Length at first maturity / Size / Weight / Age
Maturity: L
m
55.7
  range ? - ? cm
Max length : 37.0 cm TL male/unsexed; (Ref.
244
); 58.0 cm TL (female)
Brown or grey dorsally, lighter below; dorsal and caudal fins may have darker tips and leading edges (Ref.
5485
).
Found on the continental shelf and slope. Water temperature: 16-25°C. Oxygen level: 0.2-2.4 ppm. Feeds on bony fishes (mostly lanternfishes) and cephalopods. Sexual dimorphism by size exists. Viviparous (with a yolk-sac placenta), with probably 2 to 10 young in a litter. Utilized fresh for human consumption.
Viviparous, placental (Ref.
50449
). Distinct pairing with embrace (Ref.
205
).
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
)
Least Concern (LC)
; Date assessed:
20 May 2020
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: subsistence fisheries
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 10 - 21.7, mean 14.6 °C (based on 100 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00183 - 0.00992), b=3.04 (2.83 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.2 ±0.3 se; based on diet studies.
Resilience (Ref.
120179
): Very Low, minimum population doubling time more than 14 years (K=0.48; Fec=2).
Fishing Vulnerability (Ref.
59153
): Moderate vulnerability (43 of 100).
Price category (Ref.
80766
):
High
.
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- 20 July 2016
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