522 
Fishery Bulletin 99(4) 
Table 1 
Summary of fish-days for data from 27 adult tautog (400-514 mm TL) tagged and released with ultrasonic transmitters at four 
sites in lower Chesapeake Bay near Cape Charles, Virginia. Recaptured tautog are noted with an asterisk (*). Abbreviations for 
sites: CL = Coral Lump; TX = Texeco Wreck; RB = Ridged Bottom; AW = Airplane Wreck. 
Fish days 
ID 
Sex 
TL 
Site 
Date released 
At site 
Not detected 
At alternate site 
Total 
1 
M 
432 
CL 
9 Nov 1998 
174 
8 
0 
182 
18 
M 
406 
CL 
9 Nov 1998 
155 
19 
0 
174 
19 
F 
495 
TX 
10 Nov 1998 
58 
105 
2 
165 
20* 
M 
470 
TX 
10 Nov 1998 
0 
167 
1 
168 
21 
M 
406 
RB 
10 Nov 1998 
88 
10 
0 
98 
22 
M 
400 
RB 
10 Nov 1998 
178 
0 
0 
178 
23 
M 
483 
AW 
13 Nov 1998 
152 
13 
0 
165 
24 
M 
432 
AW 
13 Nov 1998 
112 
45 
0 
157 
25 
M 
432 
CL 
3 Dec 1998 
183 
3 
0 
186 
26 
M 
400 
CL 
3 Dec 1998 
177 
4 
0 
181 
27 
M 
514 
TX 
4 Dec 1998 
177 
0 
0 
177 
28 
F 
413 
TX 
4 Dec 1998 
42 
130 
13 
185 
29* 
M 
400 
AW 
7 Dec 1998 
147 
14 
1 
162 
30 
M 
419 
AW 
7 Dec 1998 
46 
21 
0 
67 
31 
M 
445 
RB 
8 Dec 1998 
144 
24 
0 
168 
32 
M 
419 
RB 
8 Dec 1998 
88 
39 
0 
127 
33 
M 
406 
TX 
21 Apr 1999 
0 
136 
6 
141 
34* 
M 
432 
CL 
28 May 1999 
69 
0 
0 
69 
35 
M 
445 
TX 
28 May 1999 
97 
7 
0 
104 
36 
M 
— 
TX 
28 May 1999 
103 
1 
0 
104 
37* 
F 
445 
TX 
28 May 1999 
99 
5 
0 
104 
CO 
oo 
M 
483 
CL 
7 Jun 1999 
59 
0 
0 
59 
39* 
F 
483 
C,L 
7 Jun 1999 
59 
0 
0 
59 
40* 
F 
432 
CL 
7 Jun 1999 
59 
0 
0 
59 
41 
M 
445 
AW 
7 Jun 1999 
10 
2 
2 
14 
42* 
M 
406 
RB 
9 Jun 1999 
58 
0 
0 
58 
43 
M 
406 
RB 
9 Jun 1999 
56 
2 
0 
58 
98-100% of fish-days in summer (Fig. 2). Reduced detec- 
tion in winter and spring was partially attributed to two 
tautog (ID21, ID32) that were detected 46 d and 75 d less 
than the mean (175 d) for other tautog (72=12) released at 
the same time. To provide a more conservative estimate of 
site utilization, these tautog were listed as “not detected” 
at these sites for these days. 
Eighty-five percent (/2 = 11) of tautog released at man- 
made structures remained inshore and all but three of 
these were detected only at their respective release sites. 
Site utilization by tautog at the Texeco Wreck was low 
(34-71% of fish-days) in all seasons (Fig. 2). One tautog 
(ID20) released at the Texeco Wreck was only detected at 
the Texeco Wreck for three hours after being tagged and 
released in fall 1998. Two additional tautog (ID 19, ID28) 
spent 64-70% of fish-days away from the Texeco Wreck in 
fall, winter, and spring, and a fourth tautog (ID33) spent 
100% of fish-days away from the Texeco Wreck in spring 
and summer. One of these tautog (ID28) was detected at 
the Coral Lump for 6 days in January 1999 (VR1 receivers) 
and all three tautog were regularly detected with the VR60 
receiver at a site 2 km south of the Texeco Wreck. Tautog 
released at the Airplane Wreck were resident 99% of fish- 
days in fall, 66% of fish-days in winter, and 58% of fish-days 
in spring (Fig. 2). Reduced detection in winter resulted 
partially from one tautog (ID30) being detected 108 days 
less than the mean (175 days) for other tautog 0z = 12) re- 
leased at the same time. To provide a more conservative 
estimate of site utilization, this tautog was listed as “not 
detected” at the Airplane Wreck for these days. No sum- 
mer data were available for tautog at the Airplane Wreck 
because the single tautog (ID41) released there in spring 
1999 was detected at this site for two days following re- 
lease, was later detected at the Texeco Wreck, and then 
was never detected again at any site. Tautog 41 was listed 
as “not detected” at the Airplane Wreck from the time of 
