MEPS - Vol. 398 - Table of contents

Antarctic krill Euphausia superba. Photo: Carsten Pape

Meyer B, Auerswald L, Siegel V, Spahić S, Pape C, Fach BA, Teschke M, Lopata AL, Fuentes V

 

Seasonal variation in body composition, metabolic activity, feeding, and growth of adult krill Euphausia superba in the Lazarev Sea

 

The winter season has been identified as key for krill biology, and yet the processes involved are still little understood. Until the end of the 1990s, the prevailing view was that different adaptations to winter conditions in adult krill are the result of the low food supply during winter. The relative significance of the proposed overwintering mechanisms was difficult to judge because they have been observed separately or only in combination with a small number of parameters. Our investigations used a multi-analytical approach using the same suite of methods to ensure comparability of data throughout seasons. This approach enabled us to determine the relative importance of each component measured, as well as the driving environmental factors mediating seasonal variation in krill physiological functions.

 

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