286 
Fishery Bulletin 1 12(4) 
Table 1 continued 
Depth 
Mort 
Type 
Timing 
Sector 
Season 
Hook 
Vent 
n 
Study 
40 
0.160 
SR 
I 
Rec 
Sum 
J 
V 
44 
Patterson 4 
40 
0.200 
SR 
I 
Rec 
Fall 
J 
V 
60 
Patterson 4 
40 
0.420 
C 
D 
Rec 
Sum 
M 
V 
56 
Diamond and Campbell, 2009 
40 
0.340 
C 
D 
Rec 
Fall 
M 
V 
32 
Diamond and Campbell, 2009 
40 
0.740 
SR 
I 
Com 
Win 
C 
NV 
814 
Nieland et al., 2007 
45 
0.630 
SR 
I 
Rec 
Sum 
J 
NV 
280 
Dorf, 2003 
50 
0.360 
C 
D 
Rec 
Fall 
J 
V 
55 
Gitschlag and Renaud, 1994 
50 
0.690 
c 
D 
Rec 
Sum 
M 
V 
24 
Diamond and Campbell, 2009 
50 
0.440 
c 
D 
Rec 
Fall 
M 
V 
36 
Diamond and Campbell, 2009 
50 
0.610 
SR 
I 
Rec 
Sum 
J 
NV 
105 
Dorf, 2003 
50 
0.790 
AT 
D 
Rec 
Sum 
M 
V 
24 
Diamond et al.7 
50 
0.400 
AT 
D 
Rec 
Win 
M 
V 
20 
Diamond et al.7 
50 
0.744 
SR 
I 
Com 
Win 
C 
NV 
1638 
Nieland et al., 2007 
55 
0.580 
SR 
I 
Rec 
Sum 
J 
NV 
240 
Dorf, 2003 
60 
0.380 
SR 
I 
Rec 
Sum 
J 
NV 
125 
Dorf, 2003 
60 
0.214 
SR 
I 
Rec 
Fall 
C 
V 
282 
Campbell et al., 2010a 
60 
0.258 
SR 
I 
Rec 
Sum 
c 
V 
282 
Campbell et al., 2010a 
60 
0.694 
SR 
I 
Com 
Win 
c 
NV 
464 
Nieland et al., 2007 
65 
0.370 
SR 
I 
Rec 
Sum 
J 
NV 
50 
Dorf, 2003 
70 
0.330 
SR 
I 
Rec 
Sum 
J 
NV 
10 
Dorf, 2003 
70 
0.782 
SR 
I 
Com 
Win 
c 
NV 
404 
Nieland et al., 2007 
75 
0.230 
SR 
I 
Rec 
Sum 
J 
NV 
75 
Dorf, 2003 
80 
0.470 
SR 
I 
Rec 
Sum 
J 
NV 
100 
Dorf, 2003 
80 
0.886 
SR 
I 
Com 
Win 
c 
NV 
88 
Nieland et al., 2007 
90 
0.912 
SR 
I 
Com 
Win 
c 
NV 
68 
Nieland et al., 2007 
95 
0.560 
SR 
I 
Rec 
Sum 
J 
NV 
30 
Dorf, 2003 
lications (Gitschlag and Renaud, 1994; Render and Wil- 
son, 1994; Patterson et al., 2001; Dorf, 2003; Nieland 
et al., 2007; Diamond and Campbell, 2009; Campbell 
et al., 2010a). One assessment was calculated from 
unpublished data (Patterson 4 ), and 5 estimates were 
available only from gray literature (Parker 5 ; Burns 
et al. 6 ; Diamond et al. 7 ; Sauls 8 ). Data extracted from 
each publication included proportional mortality, wa- 
4 Patterson, W. 2011. Unpubl. data. Univ. South Alabama, 
Mobile AL 36688. 
5 Parker, R. O. 1985. Survival of released red snapper prog- 
ress report. SEDAR24-RD12, 9 p. [Available from http:// 
www.sefsc.noaa.gov/sedar/.] 
6 Burns, K. M., R. R. Wilson Jr., and N. F. Parnell. 2004. Par- 
titioning release mortality in the undersized red snapper by- 
catch: comparison of depth vs. hooking effects. Mote Marine 
Laboratory Technical Report No. 932, 43 p. [Available from 
Mote Marine Laboratory, 1600 Ken Thompson Pkwy., Sara- 
sota, FL 34236.] 
7 Diamond, S. L., T. Hedrick-Hopper, G. Stunz, M. Johnson, and 
J. Curtis. 2011. Reducing discard mortality of red snapper 
in the recreational fisheries using descender hooks and rapid 
recompression. Final report, grant no. NA07NMF4540078, 
52 p. [Available from http://www.sefsc.noaa.gov/P_QryLDS/ 
download/CR262_Diamond_20 1 l.pdf?id=LDS.] 
8 Sauls, B. 2012. Release mortality estimates for recreation- 
al hook-and-line caught red snapper derived from a large- 
scale tag-recapture study in the eastern Gulf of Mexico. SE- 
DAR31-DW23, 21 p. [Available from http://www.sefsc.noaa. 
gov/sedar/.] 
ter depth (in meters), study type (surface release, cag- 
ing, passive tagging, acoustic tagging, or hyperbaric 
chamber), timing of the mortality estimate (immediate 
or delayed), fishing sector evaluated (commercial or 
recreational), season (winter, spring, summer, fall, or 
annual), hook type used (circle, J, or mixed), venting 
treatment (venting or nonventing), and sample size in). 
Several discrepancies about release mortality rates 
reported in the literature were found. The 10-, 15-, 20-, 
and 25-m depth groups from Dorf (2003) appeared to 
be aggregated and reported as a single estimate for one 
depth group (21-25 m) in a previous stock assessment 
in 2005 (SEDAR 2 ). The 30-, 40-, and 50-m values from 
Diamond and Campbell (2009) also were aggregated 
and reported as annual estimates in the previous as- 
sessment in 2005 (SEDAR 2 ). Because there is uncer- 
tainty about why these 2 data sets were aggregated 
in the previous assessment, our meta-analysis relied 
on published values as being representative of those 
works. The only data set from a commercial fishery 
that we found was that of the Nieland et al. (2007) 
study. This lone commercial-fishery study comprised 
data over 4 years at more than 273 separate fishing 
sites, the majority of which were located in coastal 
Louisiana. Nieland et al. (2007) originally reported site- 
specific estimates of release mortality, many of which 
had small sample sizes (n=~5-l0). Therefore, mortality 
