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Latest Inventions Economic activity of fisheries CRAB REPRODUCTION METHOD (VERSIONS)
CRAB REPRODUCTION
METHOD (VERSIONS)
FIELD: fish industry.
SUBSTANCE: method involves collecting crab larvae
in collectors, store ponds and/or ponds provided at depths of 5-150 m in sea
regions with water temperature not exceeding 18 C, salinity of at least 28%,
dissolved oxygen content in water of at least 5 ml/l; growing fry to the age of
4 months - 3 years; arranging collectors, store ponds or growing ponds at a
distance of 0. 3-6.0 m one from another; using collectors or store ponds where
crab fry may be grown without resetting up to 4-18 month age; settling crab fry
to ground or artificial bottom constructions (reef) or into ponds, where crab
fry is grown up to 2-3 year age; resettling crab fry onto ground or artificial
bottom constructions (reef); collecting larvae in collectors or store ponds,
where crab fry is grown up to 4-12 month age; resettling into ponds in amounts
providing their survival during the entire cultivation period; additionally
growing crab fry in nursery ponds up to 2-3 year age; resettling onto ground or
artificial bottom constructions. For reproducing deep-sea kinds of crabs, such
as Paralithodes platypus (Brant), Paralithodes brevipes (A.Milne-Edwards et Luca),
Chionocetes angulatus (Rathbun), Lithodes aequispina (Benedict), Lithodes Couesi
(Benedict), Paralomis multispina (Benedict), Paralomis Verrilli (Benedict),
bottom collectors or bottom constructions (reef) are arranged at 100-2.500 m
depth in sea regions with water temperature below 18 C, salinity of at least
28%, content of dissolved oxygen in water of at least 5 ml/l. Bottom collectors
may be set on sea bottom sites with 60 deg gradient at a distance of 1-200 m one
from another.
EFFECT: increased efficiency by providing
restoration of crab population and producing viable crab fry in natural
conditions. 7 cl, 5 ex
Fedoseev V.Ja.,
Grigor'eva
N.I.
Patent number: 2174750
Publishing date: January 9, 2002
To make the order on reception of the complete information under the invention, interesting for you
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