Table 4.—Summary of plankton, fish eggs, and fish larvae mean catches for each cruise, dividing the cruise 
into portions greater than 50 m depth and less than 50 m depth. 
Plankton volume Fish Eggs Fish Larvae 
(ce/1,000 m° ) (No./10 m*) (No./10 m*) 
Cruise Month <50m >50 m <50m >50 m <50 m >50m 
1972 
8B 7201 & Feb. 68.8 69.6 420.1 880.3 153.2 336.7 
GE 7202 (15) (12) (18) (12) (18) (12) 
GE 7208 May 158.2 48.2 820.0 300.6 348.8 489.1 
(15) (13) (16) (14) (16) (14) 
GE 7210 JUNC wenn nnn nnn nnnnnnnnee No stations were greater than 50 m deep --------------------- 
IS 7205 Sept. 195.7 120.7 559.9 640.1 742.9 1,093.7 
(26) (8) (26) (8) (26) (8) 
IS 7209 Nov. 144.6 67.1 198.4 161.0 134.8 638.0 
(33) (16) (34) (16) (34) (16) 
1973 
IS 7303 Jan. 181.1 107.1 419.0 362.2 146.1 645.3 
(33) (17) (34) (17) (34) (17) 
IS 7308 May 237.6 128.9 955.2 684.0 545.8 767.0 
(34) (15) (34) (15) (34) (15) 
IS 7311 June-July 118.2 124.2 483.8 379.7 328.7 997.0 
(34) (17) (34) (17) (34) (17) 
IS 7313 Aug. 232.6 114.9 857.2 368.4 363.1 1,045.8 
(34) (16) (34) (16) (34) (16) 
IS 7320 Nov. 158.3 100.6 364.3 138.1 121.5 698.2 
(32) (18) (32) (18) (32) (18) 
1974 
CL 7405 1) C\ No stations were greater than 50 m deep---------------------- 
CL 7412 May 215.1 191.7 937.4 354.9 508.7 655.5 
(41) (3) (39) (3) (39) (3) 
Pooled means 178.9 100.7 606.4 402.8 342.2 739.2 
(297) (135) (301) (136) (301) (136) 
_ ue 
= c = 
2 iS = 
: Z 
300 2 Y 
4 
>50m 
a: 3 
—E a 
° o 
= a 
Q = 
~ 
8 200 = J 
2 b 
2 = 
= 
° 
> 
z 
oO 3 = 
Ee & = 
E 
= 100 § 3 
< = © 
= ’ ~ 
a : : 
= E e 
2 ° 
< o 8 
w A A 
2 . 
= 5 § 
3 2 
= * 
° 
A = z 
FEB. MAY JUN. SEPT, NOV. JUN= JUL AUG, NOV MAR, MAY 
72 72 72 72 72 73 7 3 73 73 74 74 
CRUISE DATES 
Figure 13.—Comparison of mean zooplankton volumes between stations 
less than 50 m deep and those more than 50 m deep for 12 eastern Gulf of 
Mexico cruises, 1972-74. Numbers of stations and standard errors of the 
means are given in parentheses above bar graphs. 
16 
(39,15 3) 
8 
8 
3 RSSSSin. 5) | on 
o 
° 
3 
MEAN NUMBER OF FISH EGGS UNDER 10m? 
io stotlons > SOm were sampled 
jo stolons >» SOm were sompled 
ae 32, 42.8) 
BES SNNANSSS RSS 
E 
z 
Eas 
3 
x 
x 
AR. 
4 
— : othe 
5 = 
2 Z a 
Z = Z Z 
g Ca A Y = 
800 Be * A Y 2 of 
3 Ss Jeon. ve 4A ce 
5 oes Z y AZ ag = 1% 
x a = 8, 4 Z sy a : Z 
Fd a S Se Z Y Ag =Y 5 4 
a bea oY we Y Y eg a E g 
8) 4007 SS YA is Z =f "yy YA a Z 
5 manifest YW IY st | 
Fy Ali“g ii |A@ | Bee 
> 1H 1A it |A Y A \Y x: 1 
: IZ IA IE 1A [A IY AY n: 1G 
= Fea, ‘v JUN, SEPT, NOV. Ne JA. AUG. NOV. MAR - rts 
72 72 72 72 72 73 73 3 73 73 + 
CRUISE DATES 
Figure 14.—Mean fish egg and fish larvae abundance. Comparisons are 
made between stations less than 50 m deep and those more than 50 m 
deep for 12 eastern Gulf of Mexico cruises, 1972-74. Numbers of stations 
and standard errors of the means are given in parentheses above bar 
graphs. 
