Species identification of copepods in lake sediments is often difficult because their remains lack diagnostic features. It is therefore not easy to track changes in copepod biodiversity in lakes through time. We report a method for the isolation, amplification, and identification of copepod DNA from whole lake sediments formed in the early Holocene to the present. The method, which involves amp...

Copepod nauplii are larval crustaceans with important ecological functions. Due to their small size, they experience an environment of low Reynolds number within aquatic habitat. Here we provide a mathematical model swimming copepod nauplius two legs moving in plane. This allows for both rotation and two-dimensional displacement by the periodic deformation swimmer’s body. The system is studied ...

The size of copepod prey strongly influenced dietary selectivity by Euchaeta elongata. Adult females (4.2-mm prosome length) showed highest predation rates on adult copepod prey 6501,000 pm long and on intermediate sized copepodid stages of Calanus pacz$cu+s. Selective feeding curves of copepodid stages IV and V of E. elongata showed a slight shift toward smaller prey. The prosome length of the...

Zooplankton are commonly frozen at sea In ecological studies when it is impractical to extract liplds lrnrnediately from live animals Analysis of lipids extracted from the copepod Calanus pacificus established that freezing has neghgible effects on copepod dry mass, total lipid content, or lipid composltion resulting only in shght changes in free fatty acids However, storage for 1 yr at -15°C r...

The objectives of the research are to understand how copepod ingestion and swimming behavior change over short (<2 hour) time scales, under a suite of different food and acclimation conditions. New techniques to determine the gut content of individual copepods are being developed to relate individual behavior to individual feeding success. Models will be used to test hypotheses of copepod forag...

Contents 1. Introduction 2. Main microzooplankton groups 3. Microzooplankton grazing impacts in marine ecosystems 3.1. How much of the primary production is daily consumed by microzooplankton? 3.2. Breaking old paradigms on the role of zooplankton in marine ecosystems 4. Microzooplankton and the biogeochemical cycles 5. Microzooplankton as prey 5.1. Contribution of microzooplankton to copepod d...

The qualitative composition, numerical abundance and seasonal distribution of microzooplankton in the São Sebastião Channel were studied in different seasonal periods. Data are presented for 43 Protozoa, 4 rotifer and 30 copepod nauplii specimens. Tintinnids represented the most abundant group within the microzooplankton community, with 31 species recorded, among which Amphorellopsis acuta, Cod...

The noncanonical 5' intron donor splice sites GA and GG are exceedingly rare in described eukaryotic genomes; however, they are present in ∼12% of introns in the genome of the copepod Eurytemora affinis Failure to recognize the high frequency of these donor sites compromised the modeling of genes in this newly sequenced genome, including 10 conserved ionotropic glutamate receptor (GluR) family ...