de Silva and Condrey: Patterns in patchy data discerned from Brevoortia patronus bycatch 
205 
5 I 
4 - 
3 - 
</) 
c 
0 o 
E * 
b 
0 -- 
bsk 
‘MEk 
cr, 
bts 
Species 
ab - Atlantic bumper 
ac - Atlantic croaker 
acu - Atlantic cutlassfish 
bs - brown shrimp 
bts - blacktip shark 
bsk - bull shark 
but - gulf butterfish 
cr - cownose ray 
cj - crevalle jack 
gc - gafftopsail catfish 
Fate 
CH-caught in hold G-gilled K-kept 
RD- released disoriented RM-released dead 
RH-released healthy UK-unknown 
he - hardhead catfish 
jf - cabbagehead jellyfish 
rd - red drum 
sh- unid. penaeid shrimp 
shk - unid sharks 
sps - spotted seatrout 
ss - sand seatrout 
stm - striped mullet 
tf - unid. tonguefish 
RH 
ab 
UK 
gc stm 
spmcHK ^ ps 
he ds 
but 
acu 
tfae f 
-1 -L— 
-3 
-1 
Dimension 2 
Figure 6 
Correspondence analysis plot for species-fate associations for 1995 fishing season. 
Zone groups 11-12 and 13-14 were primarily as- 
sociated with sand seatrout and, to a lesser extent, At- 
lantic croaker. In addition, zone group 11-12 was also 
associated with bull shark, striped mullet, spotted 
seatrout, unidentified shrimp, and hardhead catfish. 
Zone group 15-16 was also associated with Atlan- 
tic croaker. Other species associated with this area 
were cabbage head jellyfish, brown shrimp, uniden- 
tified tonguefish, Atlantic bumper, unidentified re- 
quiem sharks, gulf butterfish, and crevalle jack. Zone 
group 17-18 was associated with Spanish mackerel, 
Atlantic cutlassfish, cownose ray, blacktip shark, red 
drum, and gafftopsail catfish. Secondarily associated 
species with this area were gulf butterfish and cre- 
valle jack. 
Fall The first two axes of the fall analysis explained 
97% of the total inertia, once again presenting a good 
fit of the table. By fall, two major groupings were 
observed (Fig. 9). Areas from zone group 11-12 to 
15-16 formed one group and were separated from 
the most westerly zone group 17-18. 
Zone group 17-18 was primarily associated with 
Atlantic croaker, red dram, bull shark, blacktip shark, 
gulf butterfish, unidentified shrimp, and, to a lesser 
extent, cabbage head jellyfish, brown shrimp, spot- 
ted seatrout, Spanish mackerel, and unidentified 
requiem sharks. 
Zone groups 11-12 to 15-16 were associated with 
hardhead catfish, gafftopsail catfish, sand seatrout, 
and, to a lesser degree, Spanish mackerel. In addi- 
tion zone group 13-14 was also associated with cre- 
valle jack and striped mullet and zone group 15-16 
with cownose ray, unidentified tonguefish, and At- 
lantic bumper. 
Discussion 
Bycatch studies of the menhaden industry were con- 
ducted in 1894 on the Atlantic menhaden, Brevoortia 
tyrannus, fishery (Christmas et al., 1960) and in 1948 
in the U.S. Gulf of Mexico (Miles and Simmons, 1950). 
Automatically retained bycatch percentage estimates 
