2018-2019 USAP Field Season
Physiological ecology of herbivorous Antarctic copepods
Dr. Ann Marie Tarrant
Supporting Stations: ARSV Laurence M. Gould
This project focuses on the adaptations of copepods – small animals that live in the water column and are an important food source to predators. The overall goal is to examine and compare adaptations to varying food supplies across species that range in size and ecology, in order to understand how each species responds to short-term changes in food availability. The project contains three main objectives: (1) compare the sets of genes across species, especially looking at genes related to storage of energy from food; (2) measure and compare the responses of copepods to changes in food availability; and (3) determine how variation across the western Antarctic Peninsula habitat affects the feeding condition of the copepods.
Field Season Overview
One participant will sail on the ARSV Laurence M. Gould during the Long-Term Ecological Research (LTER) cruise and will collect copepods of three different species with routine oblique surface net tows from at least five stations per species. Slow vertical tows at process stations will supplement surface net-tow collections. All sampling will be conducted on an opportunistic basis from a subset of LTER sample sites. The participant will conduct incubations and will use a stereo microscope for sorting and photographing specimens. Specimens will be stored at -20° and -80° C and shipped with dry ice at the end of the cruise. A support contractor technician will assist with net tows and seawater collection.
Deploying Team Members