Bivalve larvae became very abundant in early June and then gradually 

 declined in number through the remainder of the study. Polychaete larvae 

 were present in low numbers throughout the study period except for late 

 June and early July, when up to 3,300/m3 were taken. Other organisms 

 occurring in the #8 mesh net samples are shown in Table 11. Appendix 2 

 gives computer listings of all organisms collected with this net. 



Crustaceans 



Crustacean populations (exclusive of copepods) sampled by y/0 mesh 

 net and epibenthic sled are summarized in Tables 12-32. The plankton 

 was dominated by larval forms, especially zoea and megalopa stages of 

 brachyuran crabs. Zoea and megalopa (glaucothoe) of pagurid crabs were 

 next in abundance in the meroplankton. Also fairly numerous were 

 zoea of the caridean shrimps, Crangon septemspinosus and Palaemonetes sp. 

 Zoeal Thalassinidea (probably the burrowing shrimp Callianassa sp. ) . 

 were occasionally collected. Of the holoplankton, only the opossum 

 shrimp, Neomysis americana , occurred regularly. Crustaceans encountered in 

 epifaunal sampling included, in addition to the above groups, adult 

 Crangon septemspinosus , which were sometimes abundant, and smaller numbers 

 of amphipods of several species, isopods (mostly Edotea triloba ) and 

 cumaceans. 



