A comparison of two diets in the laboratory culture of the zoeal stages of the brachyuran crabsRhithropanopeus harrisii andNeopanope sp.
© Biologischen Anstalt Helgoland 1976
1. The zoeal stages ofRhithropanopeus harrisii andNeopanope sp. (Family Xanthidae) were raised in the laboratory on a diet of proven value,Artemia salina nauplii, and an experimental diet, the rotiferBrachionus plicatilis.
2. Survival to the megalopa was achieved on both diets for both species; however, survival was significantly lower for rotifer-fed larvae. Rotifer-fedNeopanope sp. larvae showed lower percent survival of control (A. salina nauplii) than did rotiferfedR. harrisii larvae.
3. Delay in molting was immediately apparent in both species when fed rotifers. Intermolt duration was significantly longer for rotifer-fed larvae for all zoeal instars inR. harrisii and in the first two zoeal stages ofNeopanope sp.
4. The results are compared with similar studies previously reported for the portunid crabCallinectes sapidus.