A FIELD TRIP REPORT
LED BY DR. B.E. EMMANUEL
Department of Marine Sciences
University of Lagos, Nigeria.
The field
trip commenced at about 6:20 pm on the 5th of June 2013, on arrival
at the Lagos lagoon Jetty, we tried to loose the tangled net that was meant to be used for fishing. The net is set
in the evening and hauled the next morning to collect the entangled fish.
Matthew, Paul and Abdul Ismail volunteered to help in loosing of the rope then
the girls Tairat, Zainab and Bola also join them. The essence of loosing the
tangled net is to make it easier when
setting it in the water. It is usually set across the river, or transverse to
the path of migrating fish, so that when a fish tries to swim through the net
wall, it gets entangled in the mesh. This net is made of float (a Dunlop
slippers material), a sinker and a buoy; it is made to fit the desired target
species.

An
entangled net.
Then after
we were meant to understand that there are two various colors of net, which are
the green and the grey net. The green net attract more fish than the red.
Before the
boat was let into the water, the lead lecturer Dr. Emmanuel ordered one of the
students to open the valve of the rear base of the boat to enable water into
the boat for buoyancy, to prevent boat from capsizing.
After the
loosing of the net, at about 6:35pm, the boat was pushed into the water with
the help of a bamboo stick placed underneath to enable it move into the water
easily, at which seven students joined aboard including the lecturer. According
to the student that went on board on getting to the under of the Lagos third
main land bridge, they flung the net into the water and tied it to sticks to
avoid it from becoming a ghost net.
The next
day (6th of June 2013)
As at 6:15am,when
we the third year students of the Department of Marine sciences, University of
Lagos were already assembled at Lagos lagoon Jetty alongside with our lecture
Dr. Emmanuel. Some students also went aboard and collected the fishes which is
caught in the net twine behind the operculum, or have been caught between the
head and the body.
The essence
of coming very early the next day to check on the fish is to avoid them being
eaten by crabs. It was even noticed that some of the fish have been eaten by crabs.
fishes caught mainly consist of Grunters and Tilapias.

A fish been
eaten by crab.
Other photographs
taken during the process....

An entangled fish

A fish that was caught



A fish caught in the net twine
behind the operculum.
conclusion
With the help of this field work, I believe the majority of us are now
capable of setting gill nets on their own.