204 
Fishery Bulletin 96(2), 1 998 
Table 6 
Species used in correspondence analyses. (M) signifies species used in main table and (S) in supplementary table (see “Materials 
and methods” section. Areas ( 11-12, 13-14, etc. are shown under each season. Counts are number of organisms observed. Unid. = 
unidentified. 
Spring Summer Fall 
11-12 
13-14 
15-16 
17-18 
11-12 
13-14 
15-16 
17-18 
11-12 
13-14 
15-16 
17-18 
Total 
Atlantic croaker (M) 
132 
20 
50 
1 
554 
1,604 
1,732 
212 
40 
97 
51 
612 
5,105 
sand seatrout (M) 
104 
26 
17 
0 
813 
1,500 
572 
2 
91 
91 
197 
53 
3,466 
gafftopsail catfish (M) 
255 
70 
72 
24 
161 
0 
96 
48 
8 
28 
33 
1 
796 
Atlantic cutlassfish (M) 
41 
28 
209 
22 
5 
1 
53 
55 
7 
0 
13 
36 
470 
crevalle jack (M) 
71 
12 
133 
17 
5 
0 
31 
9 
22 
41 
8 
0 
349 
Spanish mackerel (M) 
22 
11 
34 
33 
29 
0 
56 
33 
0 
7 
6 
10 
241 
Atlantic bumper (S) 
0 
0 
0 
0 
0 
0 
2,166 
330 
0 
0 
1 
0 
2,497 
striped mullet (S) 
344 
31 
0 
0 
511 
0 
0 
0 
0 
9 
0 
0 
895 
red drum (S) 
21 
0 
34 
0 
23 
0 
24 
6 
0 
12 
9 
116 
245 
hardhead catfish (S) 
36 
5 
3 
0 
100 
3 
38 
3 
12 
1 
3 
2 
206 
tonguefish spp. (S) 
0 
0 
2 
0 
0 
0 
1 
0 
0 
0 
200 
1 
204 
blacktip shark (S) 
37 
0 
54 
1 
20 
0 
19 
52 
0 
0 
0 
1 
184 
cownose ray (S) 
27 
2 
26 
0 
3 
0 
4 
7 
0 
0 
1 
0 
70 
brown shrimp (S) 
0 
0 
1 
2 
0 
0 
39 
0 
0 
0 
10 
13 
65 
cabbbagehead jellyfish (S) 
0 
0 
5 
12 
0 
0 
33 
0 
1 
0 
4 
6 
61 
unid. requiem sharks (S) 
0 
0 
23 
2 
3 
0 
16 
0 
0 
6 
1 
6 
57 
spotted seatrout (S) 
2 
8 
0 
0 
31 
0 
0 
0 
0 
0 
0 
0 
41 
gulf butterfish (S) 
2 
0 
3 
0 
0 
0 
6 
3 
0 
0 
0 
26 
40 
bull shark (S) 
5 
0 
0 
0 
31 
0 
2 
0 
0 
0 
0 
1 
39 
unid. penaeid shrimp (S) 
0 
0 
1 
9 
5 
0 
0 
0 
1 
0 
0 
16 
32 
Others (not used in CA) 
80 
5 
86 
11 
147 
5 
56 
24 
13 
8 
72 
9 
516 
Column Total 
1,179 
218 
753 
134 
2,441 
3,113 
4,944 
784 
195 
300 
609 
909 
15,579 
The second group, species primarily associated 
with being gilled, were Atlantic croaker, sand sea- 
trout, and unidentified tonguefish. Other species that 
were associated with being gilled were unidentified 
penaeid shrimp, Atlantic cutlassfish, gulf butterfish, 
and Atlantic bumper. These four species were also 
associated with the third group, species kept by the 
crew, and those whose fate was unknown. Other spe- 
cies associated with this third group were hardhead 
catfish, brown shrimp, Spanish mackerel, gafftopsail 
catfish, striped mullet, and the cabbage head jellyfish. 
Temporal and spats'a! 
patterns of bycatch species 
Spring Correspondence analysis of area by species 
for spring indicated that the first two axes explained 
97% of the inertia and offered a good representation 
of species-area associations. From the two-dimen- 
sional plot (Fig. 7), we discerned three major group- 
ings. The first axis separates the eastern areas of 
the fishery (zone groups 11-12 and 13-14) from the 
western areas (zone groups 15-16 and 17-18). The 
second axis also separates zone group 15-16 from 
zone group 17-18. 
The eastern areas are associated with Atlantic 
croaker, gafftopsail catfish, sand seatrout, hardhead 
catfish, bull shark, striped mullet, and spotted 
seatrout. 
Zone group 15-16 is primarily associated with 
unidentified tonguefish, red drum, crevalle jacks, 
blacktip shark, unidentified requiem sharks, gulf 
butterfish, and Atlantic cutlassfish. Zone group 17- 
18 was associated with Spanish mackerel, brown 
shrimp, cabbage head jellyfish, and unidentified 
shrimp. 
Summer For the summer, correspondence analysis 
indicated that the two axes accounted for 94% of to- 
tal inertia. As in spring, three major species area 
groupings were observed (Fig. 8). Notable differences 
in these grouping were that zone group 15-16 ap- 
peared to be closer to the eastern groups ( 13-14 and 
11-12). Furthermore, group 13-14 was separated fur- 
ther from zone group 11-12. 
