Publications by authors named "Laura K Helenius"

Article Synopsis
  • - Copepod size and energy content are affected by temperature and food availability, which is important for planktivorous consumers like the endangered North Atlantic right whale.
  • - Analysis of historical data (1990-2020) showed that copepod size and lipid content vary across five regions of the Northwest Atlantic, with larger, more energy-rich copepods found in the Gulf of St. Lawrence and St. Lawrence Estuary compared to the Gulf of Maine and Scotian Shelf.
  • - These regional differences in copepod size and energy can influence the foraging success and habitat suitability for North Atlantic right whales, highlighting the importance of understanding prey energy content for their conservation.
View Article and Find Full Text PDF

Laboratory feeding experiments were conducted to study the functional response and prey size spectrum of the young naupliar stages of the calanoid copepod Paracartia grani Sars. Experiments were conducted on a range of microalgal prey of varying sizes and motility patterns. Significant feeding was found in all prey of a size range of 4.

View Article and Find Full Text PDF

Planktivorous fish can exert strong top-down control on zooplankton communities. By incorporating different feeding strategies, from selective particulate feeding to cruising filter feeding, fish species target distinct prey. In this study, we investigated the effects of two species with different feeding strategies, the three-spined stickleback (Gasterosteus aculeatus (L.

View Article and Find Full Text PDF