142
E. D. 9. CORNER AND ANTHONY (3. DAVIES
TABLE VI. LEVELS OB NITROQEN
Specie4
swe
Sea Area
Time of Year
~~
~
" Copepods "
Mixed
North Sea
August
" Sagitttas "
Mixed
North Sea
August
Balanua balanoidea
Callionymw lyra (L.)
Sagitfa elegam Verrill
Pleurobrachia pileus
" Copepods "
Calanus finmarchicus
Anomalocera patersoni
Templeton
Copepods
Euphausiids-mysids
Other crustacea
Cheotognaths
Polycheetes
Siphonophores
Hydromedusae
Pteropods
Cakmua finmarchicus
Calanus helgolandicua
Mixed Calanua
helgolandicus and
Calanua
finmarchicus
Mixed small aopepods
(mainly Pseudocalanus spp.)
Nauplii
Post-Larval
Mature
Mature
Mixed
?
Adult
Mixed
Mixed
Mixed
Mixed
Mixed
Mixed
Mixed
Mixed
Females
Males
V'S
Females
Males
v 's
Females
V'S
Females
V'S
Mainly IV
and V
English Channel
English Channel
English Channel
English Channel
Long Island Sound
Murman Sea
Norwegian Sea
Sargesso Sea
Sargasso Sea
Sargesso Sea
Sargesso Sea
Sargasso See
Sargesso Sea
Clyde
Clyde
Clyde
English Channel
English Channel
English Channel
Clyde
Clyde
Clyde
Clyde
Clyde
Sergasso Sea
s8rgaSSO Sea
February
June
June
June
Jan-Nov
?
June
Average for year
Average for year
Average for year
Average for year
Average for year
Average for year
Average for year
Average for year
Spring
Spring
Spring
Summer
Summer
Summer
Spring
Spring
Autumn
Autumn
Autumn
Zonga (Lubbock) taken from the Gulf of Maine, nitrogen varied from
S - l l ~ o dry body weight throughout the year, the maximum occurring
in April and the minimum in September.
The different chemical forms of the small quantities of phosphorus
present in zooplankton have so far attracted little attention apart from
the study by Sutcliffe (1965) of the ribonucleic acid contents of larvae
of the mud snail Nassarius obsoletus Say and the brine shrimp, Artemia
salina. By contrast, numerous studies have been made of the chemical
composition of body nitrogen in zooplankton, most of which is present
as amino acids, either in the free state or combined as peptides and
proteins (see reviews by Corner and Cowey, 1964 ; 1968). High protein
E. D. 9. CORNER AND ANTHONY (3. DAVIES
TABLE VI. LEVELS OB NITROQEN
Specie4
swe
Sea Area
Time of Year
~~
~
" Copepods "
Mixed
North Sea
August
" Sagitttas "
Mixed
North Sea
August
Balanua balanoidea
Callionymw lyra (L.)
Sagitfa elegam Verrill
Pleurobrachia pileus
" Copepods "
Calanus finmarchicus
Anomalocera patersoni
Templeton
Copepods
Euphausiids-mysids
Other crustacea
Cheotognaths
Polycheetes
Siphonophores
Hydromedusae
Pteropods
Cakmua finmarchicus
Calanus helgolandicua
Mixed Calanua
helgolandicus and
Calanua
finmarchicus
Mixed small aopepods
(mainly Pseudocalanus spp.)
Nauplii
Post-Larval
Mature
Mature
Mixed
?
Adult
Mixed
Mixed
Mixed
Mixed
Mixed
Mixed
Mixed
Mixed
Females
Males
V'S
Females
Males
v 's
Females
V'S
Females
V'S
Mainly IV
and V
English Channel
English Channel
English Channel
English Channel
Long Island Sound
Murman Sea
Norwegian Sea
Sargesso Sea
Sargasso Sea
Sargesso Sea
Sargesso Sea
Sargasso See
Sargesso Sea
Clyde
Clyde
Clyde
English Channel
English Channel
English Channel
Clyde
Clyde
Clyde
Clyde
Clyde
Sergasso Sea
s8rgaSSO Sea
February
June
June
June
Jan-Nov
?
June
Average for year
Average for year
Average for year
Average for year
Average for year
Average for year
Average for year
Average for year
Spring
Spring
Spring
Summer
Summer
Summer
Spring
Spring
Autumn
Autumn
Autumn
Zonga (Lubbock) taken from the Gulf of Maine, nitrogen varied from
S - l l ~ o dry body weight throughout the year, the maximum occurring
in April and the minimum in September.
The different chemical forms of the small quantities of phosphorus
present in zooplankton have so far attracted little attention apart from
the study by Sutcliffe (1965) of the ribonucleic acid contents of larvae
of the mud snail Nassarius obsoletus Say and the brine shrimp, Artemia
salina. By contrast, numerous studies have been made of the chemical
composition of body nitrogen in zooplankton, most of which is present
as amino acids, either in the free state or combined as peptides and
proteins (see reviews by Corner and Cowey, 1964 ; 1968). High protein