ANGER and DAWIRS: ELEMENTAL COMPOSITION OF HYAS ARANEUS 



450 1 



400- 



350- 



O) 



300 



v 250H 



"5 



C 



200 



150 J 



100- 



50- 



other constituents 



[C^\ hydrogen 





yy- :: < 



i-ii! 



nitrogen 



carbon 



m® 



Essaa 



Stage of development 



IMW 



1 



I 



Figure l.—Hyas araneus. Initial dry weight, carbon, nitrogen, and hydrogen content in the prezoea (PZ), zoeal stages (Z-I, Z-II), 



megalopa (M), and first crab stage (C). 



423 



