Published January 1, 2014
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The mystery of Microsetella: combination of sac- and broadcast-spawning in an Arctic fjord
- 1. National Institute of Aquatic Resources (DTU AQUA), Section for Oceanography and Climate, Technical University of Denmark, Kavalergården 6, DK-2920 Charlottenlund, Denmark
Description
Different life-history stages of the pelagic harpacticoid Microsetella norvegica were sampled in a Greenland fjord, to investigate how this slowly growing species can achieve high abundances at low temperatures. We expected low but continuous reproduction coupled with a low mortality, but observed the opposite: a short reproductive period with high estimated weight-specific egg production and egg mortality, and indication of a life-history strategy combining the advantages of egg carrying with egg production rates independent of temperature.
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