Lipid and lipid class content of the pelagic tunicate Oikopleura vanhoeffeni
نویسندگان
چکیده
منابع مشابه
Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula
Carnivorous zooplankton is a key element to the energy transfer through the arctic food web, linking lipid rich herbivores to the top predators. We investigated the growth and lipid dynamic of the Arctic pelagic amphipod Themisto libellula in Kongsfjorden (Svalbard, 79°N) from May to October 2007. Additional samplings were performed in spring and summer 2006 and further north in Rijpfjorden (80...
متن کاملAbsorption Efficiencies and Biochemical Fractionation of Assimilated Compounds in the Cold Water Appendicularian Oikopleura Vanhoeffeni
Using 68Ge : 14C dual-labeling, we investigated the absorption efficiency of diatom carbon for the cold water appendicularian Oikopleura vanhoeffeni. The absorption efficiency of bulk carbon (mean 5 67%) was not influenced by body size or ingestion rate. For the first time for a pelagic tunicate, food and feces were fractionated into their major biochemical constituents (i.e., low-molecular-wei...
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Studies bearing on the lipids of tumors have been made in most cases either with regard to the changes of the lipid content of the blood of tumor animals and patients or the relation between the lipids and the growth of the tumors. Of the lipids, cholesterol has been most frequently studied. Roffo (1) reported that cholesterol is concerned with the development of experimental tumors and that an...
متن کاملLimnol. Oceanogr., 44(2), 1999, 415–424
Using 68Ge : 14C dual-labeling, we investigated the absorption efficiency of diatom carbon for the cold water appendicularian Oikopleura vanhoeffeni. The absorption efficiency of bulk carbon (mean 5 67%) was not influenced by body size or ingestion rate. For the first time for a pelagic tunicate, food and feces were fractionated into their major biochemical constituents (i.e., low-molecular-wei...
متن کاملArctic pelagic amphipods: lipid dynamics and life strategy
Polar regions are characterized by a strong seasonality in primary production and distinct fluctuations in food supply. The storage of energy in the form of lipids is expected to follow a seasonal pattern; however, year-round observations are lacking. The seasonal variations of lipid classes and fatty acid compositions of four pelagic amphipods have been investigated. Individuals were collected...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1992
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps088297