Fish production
-
Upload
manindramaju -
Category
Environment
-
view
68 -
download
0
Transcript of Fish production
FISH PRODUCTION
What is Fish
Production?
Fish Production refers to the
output of fish by humans both from capture fisheries and aquaculture.
What are
Fisheries ?
Fisheries-a place where fish are reared for
commercial purposes.A fishing ground or area
where fish are caught.The occupation or
industry of catching or rearing fish.
What is Aquacult
ure?
Aquaculture- also known as aqua farming, is the farming of aquatic
organisms such as fish, crustaceans, mollusks and
aquatic plants. Aquaculture involves cultivating freshwater and
saltwater populations under controlled conditions, and can be
contrasted with commercial fishing, which is the harvesting of
wild fish.
Where must the fishing be
done?
Fishing can be done both in
marine fisheries and inland fisheries.
Lets talk about
marine &inland
fisheries!!!!
Marine fisheries – India’s marine fisheries include 7500 of coast line and
the deep seas beyond it. Popular marine fish variety’s include pomfret, mackerel, tuna, sardines and bombay duck. Yields are increased by locating large schools of fish in the open sea using satellites and echo sounders.
some marine of high economic value are also farmed in sea water this includes finned fishes like mullets , bhekti, and pearl spots, shellfish such as prawns,
mussels and oyeasters as well as seaweeds, oysters are also cultivated for
the pearl they make.
Inland fisheries-fresh water resources include canals, ponds, reservoirs and
rivers. Brackish water resources. where seawater and freshwater mix
together, such as estuaries and lagoons are also important fish
reservoirs. while capture fishing is also done in such inland water bodies
, where the yield is not that high. Most fish production in from these resources is through aquaculture.
A problem for which
solutions are being sought
today
Problem with such composite fish culture is that many of this fish breed only during monsoon. Even if fish seed is collected from the wild , it can be mixed up with that of other species
as well. So a major problem in fish farming is the lack of availability of
good quality of seed. To overcome this problem, ways have now been worked out to breed these fish I ponds using
hormonal stimulation. This has ensured the supply of pure fish seed in desired
quantities.
HELP
HELP
HELP
HELP
HELP
HELP