Micosetella. Foto Sigrun Jonasdottir

The mystery of Microsetella

Tuesday 03 Dec 13
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by Line Reeh

Contact

Marja Koski
Associate Professor
DTU Aqua
+45 35 88 34 07

Combination of sac- and broadcast-spawning in an Arctic fjord to achieve high abundance at low temperatures.

A study recently published by Associate Professor Marja Koski, DTU Aqua and fellow researchers in Journal of Plankton Research looks at how a slowly growing species like the pelagic harpacticoid Microsetella norvegica can achieve high abundances at low temperatures. 

In order to find the answer, different life-history stages of the pelagic harpacticoid  were sampled in a Greenland fjord  from March to August 2010.

The team 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.

For the full article see Journal of Plankton Research:

J. Plankton Res. (2013) doi: 10.1093/plankt/fbt117
First published online: November 28, 2013

The work was supported by grants from the Greenland Climate Research Centre and funding from European Commission FP7 EURO-BASIN.