Lazzari: Dynamics of larval fish abundance in Penobscot Bay, Maine 
85 
Table 3 
Egg type, total density (number/100 m 3 ), and percent frequency of occurrence (FO) of larval fishes collected by 1.0 m plankton net 
from April to June 1997 (102 samples) and March to April 1998 (40 samples) in Penobscot Bay. D = demersal; P = pelagic. 
Family 
1997 
1998 
Species 
Egg type 
Density 
FO 
Density 
FO 
Anguillidae 
Anguilla rostrata 
Clupeidae 
— 
0.004 
2 
Clupea harengus 
D 
0.009 
4 
0.072 
15 
Osmeridae 
Mallotus villosus 
D 
0.022 
5 
Gadidae 
Enchelyopus cimbrius 
P 
0.034 
11 
Gadus morhua 
P 
0.002 
1 
0.022 
5 
Microgadus tomcod 
D 
0.007 
2 
Pollachius virens 
P 
0.007 
3 
Labridae 
Tautogolabrus adspersus 
P 
0.007 
3 
Stichaeidae 
Lumpenus lampraetiformis 
D 
0.086 
23 
Ulvaria subbifurcata 
D 
0.462 
41 
0.014 
5 
Stichaeus punctatus 
D 
0.014 
3 
Pholidae 
Pholis gunnellus 
Cryptacanthodeidae 
D 
0.099 
27 
1.428 
75 
Cryptacanthodes maculatus 
Ammodytidae 
D 
0.054 
12 
0.294 
33 
Ammodytes sp. 
D 
0.350 
35 
0.596 
35 
Scombridae 
Scomber scombrus 
P 
0.016 
4 
Cottidae 
Hemitripterus americanus 
D 
0.064 
21 
0.215 
43 
Myoxocephalus aenaeus 
D 
0.022 
9 
0.237 
35 
M. octodecimspinosus 
D 
0.034 
9 
1.550 
40 
M. scorpius 
D 
0.004 
1 
0.366 
33 
Agonidae 
Aspidophoroides monopterygius 
Cyclopteridae 
D 
0.007 
3 
Liparis atlanticus 
D 
0.182 
51 
0.043 
13 
L. coheni 
D 
0.002 
1 
0.187 
23 
L. inquilinus 
D 
0.002 
1 
Bothidae 
Scopthalmus aquosus 
D 
0.002 
1 
Pleuronectidae 
Hippoglossoides platessoides 
P 
0.094 
30 
Pleuronectes americanus 
D 
0.229 
47 
0.029 
8 
ing mid-April (9711). The most abundant larvae were U. 
subbifurcatci (26% of total number), Ammodytes sp. (20%), 
P. americanus ( 13%), and L. atlanticus ( 10%). Total density 
of all larvae combined ranged from 0.6 larvae per 100 m 3 
in mid-May (97IV) to 3.9 larvae per 100 m 3 in late June 
(97VII). The high larval densities in late June were a re- 
sult of the large number of U. subbifurcata collected at the 
three lower bay stations. 
In 1998, 726 larvae of 16 species of fishes (Table 3) were 
collected over the four sampling cruises. The most common 
