Seasonal observations on the biometry and development in Copepodite Stage V of Calanus finmarchicus from the Firth of Clyde

1985 ◽  
Vol 88 (1) ◽  
pp. 73-83 ◽  
Author(s):  
H. Grigg ◽  
L. J. Holmes ◽  
S. J. Bardwell
Keyword(s):  
Copepodite Stage ◽  
Calanus Finmarchicus

Seasonal changes in respiration rates of copepodite stage V Calanus finmarchicus (Gunnerus)

1999 ◽  
Vol 8 ◽  
pp. 73-83 ◽  
Author(s):  
A. Ingvarsdóttir ◽  
D.F. Houlihan ◽  
M.R. Heath ◽  
S.J. Hay
Keyword(s):  
Seasonal Changes ◽  
Copepodite Stage ◽  
Calanus Finmarchicus ◽  
Respiration Rates

Patterns of variation in the dry body weight of Calanus finmarchicus in copepodite Stage V during autumn and winter in the Firth of Clyde

1989 ◽  
Vol 69 (1) ◽  
pp. 101-122 ◽  
Author(s):  
H. Grigg ◽  
L. J. Holmes ◽  
S. J. Bardwell
Keyword(s):  
Body Weight ◽  
Dry Weight ◽  
Copepodite Stage ◽  
Calanus Finmarchicus ◽  
Body Volume ◽  
Individual Stage ◽  
Freeze Dried ◽  
Body Weights ◽  
The Mean ◽  
Autumn And Winter

Variations in dry body weight in the Stage V copepodite, associated with the development of the winter generation of Calanus finmarchicus (Gunnerus) in the Firth of Clyde each year were observed from 1978 to 1982, during early October and the middle of January.The Stage V copepodite was dimorphic with respect to body size. Body weights of freeze-dried specimens were measured and form was distinguished using the prosome length. Allometric relationships of the dry weight to length in the two forms were similar, and stable between autumn and winter. From the mean of estimates for all collections, dry body weights of individual Stage V copepodites were proportional to the cube, approximately, of prosome lengths. Proportional coefficients were seasonally variable, but on all occasions these were greater for the large than the small form. Variations in dry weight were directly associated with the distinction between forms in body volume.Collections from October and January encompassed the period between the end of maximal Copepodite V recruitment and the onset of adult recruitment to the winter generation. Over this period, however, the dry body weight in all years decreased relative to length in Copepodite Stage V. This decrease, on average, was by 17% and 23% in the large and small forms respectively. Monthly collections from one population were used to examine these patterns in relation to the development of gonads. Stage V copepodites of both forms were increasing in dry weight during October, but from November were losing weight continuously. Maturation in the majority of these individuals was restrained throughout autumn, abruptly accelerating in winter.

Comparative observations on the biometry and development of Calanus finmarchicus and C. helgolandicus in Copepodite Stage V, with comments on other Calanidae

1987 ◽  
Vol 96 (2) ◽  
pp. 253-262 ◽  
Author(s):  
H. Grigg ◽  
S. J. Bardwell ◽  
L. J. Holmes
Keyword(s):  
Copepodite Stage ◽  
Calanus Finmarchicus

scholarly journals Acute hydrogen peroxide (H2O2) exposure does not cause oxidative stress in late-copepodite stage of Calanus finmarchicus

2017 ◽  
Vol 80 (16-18) ◽  
pp. 820-829 ◽  
Author(s):  
Bjørn Henrik Hansen ◽  
Anna Hallmann ◽  
Dag Altin ◽  
Bjørn Munro Jenssen ◽  
Tomasz M. Ciesielski
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Copepodite Stage ◽  
Calanus Finmarchicus

Egg production of Calanus finmarchicus : effect of temperature, food and season

1997 ◽  
Vol 127 (4) ◽  
pp. 609-620 ◽  
Author(s):  
H.-J. Hirche ◽  
U. Meyer ◽  
B. Niehoff
Keyword(s):  
Egg Production ◽  
Calanus Finmarchicus ◽  
Effect Of Temperature

Effects of pyrene on grazing and reproduction of Calanus finmarchicus and Calanus glacialis from Disko Bay, West Greenland

2008 ◽  
Vol 87 (2) ◽  
pp. 99-107 ◽  
Author(s):  
M JENSEN ◽  
T NIELSEN ◽  
I DAHLLOF
Keyword(s):  
Calanus Finmarchicus ◽  
West Greenland ◽  
Calanus Glacialis

A biophysical model of the interaction between vertical migration of crustacean zooplankton and circulation in the Lower St. Lawrence Estuary

1999 ◽  
Vol 56 (12) ◽  
pp. 2420-2432 ◽  
Author(s):  
Bruno A Zakardjian ◽  
Jeffrey A Runge ◽  
Stephane Plourde ◽  
Yves Gratton
Keyword(s):  
Population Dynamics ◽  
Vertical Migration ◽  
Horizontal Distribution ◽  
Calanus Finmarchicus ◽  
Biophysical Model ◽  
Crustacean Zooplankton ◽  
Simple Formulation ◽  
Lawrence Estuary ◽  
Circulation Patterns ◽  
St Lawrence Estuary

As an essential step in modeling the influence of circulation on the population dynamics of marine planktonic copepods, we define a simple formulation of swimming behavior that can be used in both Eulerian and Lagrangian models. This formulation forces aggregation of the population toward a preferential depth and can be stage specific and time varying, thus allowing description of either diurnal or seasonal vertical migration. We use the formulation to examine the interaction between the circulation and vertical distribution in controlling horizontal distribution of the common planktonic copepod Calanus finmarchicus in the Lower St. Lawrence Estuary, Canada. We first introduce diel migration into a simple one-dimensional model and then into a model of residual two-dimensional circulation patterns representative of conditions encountered in the Lower St. Lawrence Estuary. Results from the latter indicate that interactions between circulation and stage-specific swimming behaviors are the main mechanisms for aggregation of planktonic crustaceans at the head of the Laurentian Channel and highlight the implications of flushing of the surface-dwelling young stages for the population dynamics of C. finmarchicus in the Lower St. Lawrence Estuary.

scholarly journals Composition of wax esters is linked to diapause behavior of Calanus finmarchicus in a sea loch environment

2011 ◽  
Vol 57 (1) ◽  
pp. 65-75 ◽  
Author(s):  
K. A. J. Clark ◽  
A. S. Brierley ◽  
D. W. Pond
Keyword(s):  
Wax Esters ◽  
Calanus Finmarchicus
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