Publication Date:
2021-05-19
Description:
Pharaoh Cuttlefish (Sepia pharaonis) is commercially important and native cephalopods in
the Persian Gulf and Oman Sea. In 2013, a total of 150 eggs of Pharaoh Cuttlefish were
collected from 20 m depth in about 6 miles south of Lengeh Port and transferred to the
laboratory of Mollusks Research Station in Bandar-e Lengeh. Eggs were incubated in
temperature of 27.5±0.5 0C (mean ± SD) and salinity of about 37-38 ppt. After about 15±3
days (mean ± SD), eggs were hatched and the mean (±SD) of mantle length and wet weight of
new hatched juveniles were 6.1±0.3 mm and 0.15±.04 g, respectively. In the first month,
Artemia, Mysid and PL of L. vannamei shrimps were fed to juveniles and in second month it
shifted to fish slices. After 30 days, average (±SD) mantle length and wet weight reached to
18.6±0.6 mm and 1.67±0.14 g, respectively. At the age of 60 days they reached to average
(±SD) length of 32.3±4.2 mm and average (±SD) weight of 8.00±3.72 g. At the age of 120
days they reached to average (±SD) length of 74.5±11.3 mm and average (±SD) weight of
55.74±13.81 g. The sex was identified on the day of 150, and mate selecting occurred on
180th day, mating and spawning were occurred in days 208 and 210 of rearing period,
respectively. Each female laid average (±SD) 185±30 eggs; and average (±SD) life spans for
female and male were 212±7 and 218±20 days, respectively. Males were bigger than females
and the biggest male reached to 157.9 mm in length and 367.10 g in weight. The biggest
female reached to 105.1 mm in length and 227.18 g in weight. Results showed that Pharaoh
Cuttlefish could easily be cultured under laboratory condition with possibility of rearing to the
next generation after spawning.
Description:
Published
Keywords:
Pharaoh Cuttlefish
;
Sepia pharaonis
;
Life cycle
;
Spawning
;
Growth
;
Fish
;
Eggs
;
Length
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.69-77
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