THIC litOI,OOY OF PKI,A(IIO 811RIMPS IN THE OCEAN
277
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1 4 ' 1 ~ . 14. i'rotoeciorb. ,Sr,rgrskt? cnriacc.cr/t&nt (f ti0 o~Imci~iiri type olaphocaria), R, finit ; I),
protozooa. Sergin lucens (t hv hispitlrt typo d~phi>ott~lM), o, firnt : f, w*ond protozoee
(a-d, ~ t t ~
Qiiimey and Lrhoitr, 1940; 13, f, ttftnr Omnrt, 1969a).
Ln the post-larval stage, thc setose pleopods on some or all of the
cibdorniiiiil segments become functionul natatory organs. The larvae
swim with the hcsd upward and forward. This phaRe consists of
several &ages, which in the Sergestidae have been given the name
mnstigopus. Cleneri~lly, there appears to be a rather gradual transition
from post -larval to adult characters.
Moultirig of Avergin lucens in the lahoratory was observed every
4 days in tlir ecirly post-larvae at an experimental temperature of 20°C,
but was mostly every 6-0 days in the ttdulb at temperatures ranging
from 23" t o 26"(:. Moat moults took pl&cf\ at night.
wf+Cr,titl }WOtlJXOOlb.
+%wyf*Ikvv @ q # l t r d (th(* l[lJhr,l6 tylm nlaphooarla), C , firHt ; (1, WOOnd
4 u 11.- 12
10