96
MALCOLM R. CLARKE
that a general picture of the sampling pattern of oceanic squids may
be obtained, the stations given for records of all the species except
stranded Architeuthis are plotted in Fig. 1 (where stations overlap
only one is plotted). The apparent absence or scarcity of all squids
from some areas of this chart is very probably because suitable collecting
gear has not been used in those areas. Thus, Fig. 1 is a very rough
measure of the squid-fishing effort in broad geographical areas and is
a useful yardstick when the distribution of individual taxa is being
considered. Charts are intended to show the general areas of distribution
and where stations overlap only one point has been plotted.
With the distribution, any particular taxonomic difficulties are
mentioned, details of strandings, migrations, sources of material and
environmental tolerances are given.
B. Depth
As nearly all samples have been taken with open nets, the exact
depth range is known for very few species. Both the depth to which
the shallowest net was fished and the depth to which the deepest net
was fished are given for each species. In addition, any conclusions
which can be drawn from the data are discussed. Where depths are
converted from fathoms they are given to the nearest 10 m. With
depth, any observations on shoaling and flying are reported.
C. Life history
1. Eggs
i. the form
ii. the habitat
iii. the time of year
2. Larvae or juveniles
i. the form
ii. the depth at which they are caught
iii. the time of year they are caught
3. Growth
i. the changes in relative dimensions. The word “relatively”
has been used to denote ((relative to the mantle length”.
Where possible relative growth has been illustrated by figures
having mantle lengths the same size,
ii. the growth rate
MALCOLM R. CLARKE
that a general picture of the sampling pattern of oceanic squids may
be obtained, the stations given for records of all the species except
stranded Architeuthis are plotted in Fig. 1 (where stations overlap
only one is plotted). The apparent absence or scarcity of all squids
from some areas of this chart is very probably because suitable collecting
gear has not been used in those areas. Thus, Fig. 1 is a very rough
measure of the squid-fishing effort in broad geographical areas and is
a useful yardstick when the distribution of individual taxa is being
considered. Charts are intended to show the general areas of distribution
and where stations overlap only one point has been plotted.
With the distribution, any particular taxonomic difficulties are
mentioned, details of strandings, migrations, sources of material and
environmental tolerances are given.
B. Depth
As nearly all samples have been taken with open nets, the exact
depth range is known for very few species. Both the depth to which
the shallowest net was fished and the depth to which the deepest net
was fished are given for each species. In addition, any conclusions
which can be drawn from the data are discussed. Where depths are
converted from fathoms they are given to the nearest 10 m. With
depth, any observations on shoaling and flying are reported.
C. Life history
1. Eggs
i. the form
ii. the habitat
iii. the time of year
2. Larvae or juveniles
i. the form
ii. the depth at which they are caught
iii. the time of year they are caught
3. Growth
i. the changes in relative dimensions. The word “relatively”
has been used to denote ((relative to the mantle length”.
Where possible relative growth has been illustrated by figures
having mantle lengths the same size,
ii. the growth rate