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Helgoland Marine Research

Open Access

An improved separator box forArtemia nauplii and other phototactic invertebrates

  • G. Persoone1 and
  • P. Sorgeloos1
Helgoländer wissenschaftliche Meeresuntersuchungen23:BF01609691


1. A simple cylindrical hatching and separator box is described forArtemia salina nauplii (and other phototactic invertebrates), in which the “corner seeking effect” responsible for poor separation is avoided, and from which nauplii can be recovered very conveniently.

2. Separation is achieved by partly unscrewing an internal and closed cylinder from its fixed counter-part glued to the bottom of the box, till two slits are freed through which the nauplii migrate from the darkened internal hatching cylinder into the illuminated exterior compartment. Rescrewing the former cylinder separates the larvae from debris and unhatched eggs.


Waste WaterAssureWater ManagementWater PollutionPoor Separation