Some observations on moulting, growth and maturation of krill (Thysanoessa inermis) from the Barents Sea

The moulting interval of the euphausiid Thysanoessa inermis from the Barents Sea was found to be temperature dependent within the range of 1.5–8.0°C. Each moult accounted for a 2.1% loss of dry body wt, equivalent to a 1.2–1.3% loss of body carbon or nitrogen. During 5 months of observation both bod...

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Bibliographic Details
Published in:Journal of Plankton Research
Main Authors: Dalpadado, Padmini, Ikeda, Tsutomu
Format: Text
Language:English
Published: Oxford University Press 1989
Subjects:
Online Access:http://plankt.oxfordjournals.org/cgi/content/short/11/1/133
https://doi.org/10.1093/plankt/11.1.133
Description
Summary:The moulting interval of the euphausiid Thysanoessa inermis from the Barents Sea was found to be temperature dependent within the range of 1.5–8.0°C. Each moult accounted for a 2.1% loss of dry body wt, equivalent to a 1.2–1.3% loss of body carbon or nitrogen. During 5 months of observation both body length and secondary sexual characters (thelycum and petasma) of specimens varied greatly, including positive and negative growth periods and progression and regression of maturity stages. Characteristics of eggs spawned by one female are described.