Methodology
BE CAREFUL CATCH MAY BE ALIVE
Write down the time & date
Sharks
1.
Measure the fork length (nose to V) and
the total length
2. Measure the pre-caudal length (nose - beginning of tail)
3.
Measure stretch total length – bend down the
caudal fin and stretch
4.
Photograph
a.
Place the metre rule next to the shark
b.
Write local name, scientific name, date,
location on piece of paper/whiteboard & place next to it.
c.
Allocate specific shark number
d.
Note down the picture name/number
5.
Photograph ventral snout
a.
Take picture of the mouth/nose of shark.
b.
Note down photograph number
6.
Take vertebrae
a.
Use the knife
b.
Take the vertebrae from above the gills
c.
Note down the vertebrae no. (count from the back
of the skull)
d.
Cut one or two out, leave plenty of room for
trimming down.
e.
Put in plastic bag and then Tupperware
f.
When you get back note the spp, date, location,
specific identification number, & photograph number on the bag.
7.
Note the sex of the shark – males can be
identified by their claspers which are thin, elongated, paired fins situated
behind the pelvic fins. Females do not have claspers but have an opening
between the pelvic fins.
8.
Weigh the shark using the hand held luggage
scales and the sling.
9.
Record the method of catch, the price the fins
will go for and the time.
Rays
1.
Identify the species and sex
2.
Weigh it using the luggage scales
3.
Record the time, date, species, local name,
location and piece of paper & photograph it with the metre rule next to it
as well.
4.
Photograph the jaw ( manta jaws face forwards,
different to mobula rays)
5.
Measure the wingspread (tip to tip)
6.
Measure the total length – snout tip to tail
end.
7.
Record the method of catch and how much the ray
will sell for – which bits sell best etc
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