Choe, N. Memorial University of Newfoundland, c56nc@morgan.ucs.mun.ca
Deibel, D. Memorial University of Newfoundland, ddeibel@morgan.ucs.mun.ca

 
THE SEASONAL BIOCHEMICAL CONTENT OF PARASAGITTA ELEGANS FROM THE BENTHIC BOUNDARY LAYER IN CONCEPTION BAY, NEWFOUNDLAND
 
This study was conducted to observe the effect of the sinking spring bloom on the ecology of suprabenthic zooplankton and benthos in Conception Bay, Newfoundland where the temperature is < 0 oC year round. Time-series samples were collected with a closing suprabenthic sledge from April 1997 to June 1998. Part of this study is to investigate the seasonal biochemical content of Parasagitta elegans. There were two size modes of animals which may indicate two age groups. The mean abundance of P. elegans was 28 ± 20 m-3, with maxima of 51-57 m-3 in late spring and early summer of 1998. The temporal pattern of biochemical fluctuation between these size groups did not differ. Relative lipid, protein and carbohydrate content (% of dry weight) was related to the reproductive maturity of the animals. Lipid and carbohydrate levels were higher during spring when mature animals were predominant and protein levels were higher during fall and winter when immature animals were predominant. The inorganic content levels increased sharply when the animals fed less frequently during fall and decreased when the animals fed frequently during spring. Feeding frequency increased when there were transitions between maturity stages. These seasonal cycles occur in the absence of temperature variation.
 
Day: Wednesday, Feb. 3
Time: 04:00 - 04:15pm
Location: Hilton of Santa Fe
 
Code: SS20WE0400H