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Table 1. Fork length
(FL) - total length (TL) relationships for 13 shark species from the western
North Atlantic, based on FL = (a)TL + b. (Fork length and total length
means and ranges were taken from data
presented in this study.) |
|
Species
|
N
|
Mean
total
length
(cm)
|
Total
length
range
(cm)
|
Mean
fork
length
(cm)
|
Fork
length
range
(cm)
|
FL = (a)TL + b
|
|
a
|
b
|
r2
|
Bigeye thresher
(Alopias superciliosus) |
56
|
312
|
155-371
|
192
|
100-228
|
0.5598
|
17.6660
|
0.8944
|
Thresher shark
(A. vulpinus) |
13
|
373
|
291-450
|
211
|
168-262
|
0.5474
|
7.0262
|
0.8865
|
White shark
(Carcharodon carcharias) |
112
|
204
|
122-517
|
187
|
112-493
|
0.9442
|
-5.7441
|
0.9975
|
Shortfin mako
(Isurus oxyrinchus) |
199
|
171
|
70-368
|
157
|
65-338
|
0.9286
|
-1.7101
|
0.9972
|
Porbeagle
(Lamna nasus) |
13
|
201
|
119-247
|
182
|
106-227
|
0.8971
|
1.7939
|
0.9877
|
Bignose shark
(Carcharhinus altimus) |
10
|
174
|
132-228
|
148
|
112-192
|
0.8074
|
7.7694
|
0.9872
|
Silky shark
(C. falciformis) |
15
|
173
|
90-258
|
142
|
73-212
|
0.8388
|
-2.6510
|
0.9972
|
Dusky shark
(C. obscurus) |
148
|
153
|
92-330
|
125
|
74-277
|
0.8396
|
-3.1902
|
0.9947
|
Sandbar shark
(C. plumbeus) |
3734
|
123
|
51-249
|
103
|
42-211
|
0.8175
|
2.5675
|
0.9933
|
Night shark
(C. signatus) |
38
|
154
|
72-235
|
130
|
60-195
|
0.8390
|
0.5026
|
0.9883
|
Tiger shark
(Galeocerdo cuvier) |
44
|
247
|
145-375
|
203
|
116-318
|
0.8761
|
-13.3535
|
0.9887
|
Blue shark
(Prionace glauca) |
572
|
214
|
64-337
|
179
|
52-282
|
0.8313
|
1.3908
|
0.9932
|
Scalloped hammerhead
(Sphyrna lewini) |
111
|
206
|
82-278
|
160
|
64-216
|
0.7756
|
-0.3132
|
0.9868
|