The DW of larvae was analysed at 2 and 17 dph. Larvae were
anaesthetised with metacaine (Finquel®, Argent Laboratories,
Redmond, USA), rinsed for a few seconds in fresh water, and transferred to individually pre-weighted tin capsules (n = 12 for
each tank and sampling day). Capsules were dried for a minimum
of 48 h at 60 °C before weight determination. Values are given as
mean weight of larvae from the respective treatment tanks± standard
error (SE).