Robertson and Chivers: Prey of Stenella attenuata 339 
Enoploteuthidae (enope squids) accounted for most 
of the cephalopod prey by number (31.8%) and rep- 
resented 10.5% of all prey (fish and squid) by num- 
ber. The next most numerous squids belonged to the 
family Ommastrephidae (flying squids), which ac- 
counted for 28.2% of all cephalopod species by num- 
Table 1 
(continued) 
Number 
Frequency of 
occurrence 
Prey 
No. 
% 
No. 
% 
Family Enoploteuthidae 
5,175 
10.4 
235 
54.9 
Abraliopsis affinis 
4,880 
9.8 
199 
46.5 
Ancistrocheirus lesueuri 
183 
0.4 
78 
18.2 
Pterygioteuthis giardi 
112 
0.2 
40 
9.4 
Family Mastigoteuthidae 
Mastigoteuthis dentata 
1,163 
2.3 
188 
43.9 
Family Cranchiidae 
2,057 
4.1 
214 
50.0 
Leachia dislocata 
1,075 
2.3 
133 
31.1 
Megalocranchia sp. 
628 
1.3 
87 
20.3 
Liocranchia reinhardti 
354 
0.7 
81 
18.9 
Family Pholidoteuthidae 
Pholidoteuthis boschmai 
225 
0.5 
57 
13.3 
Family Thysanoteuthidae 
Thysanoteuhtis rhombus 
129 
0.3 
66 
15.4 
Family Octopoteuthidae 
103 
0.2 
56 
13.1 
Octopoteuthis deletron 
102 
0.2 
56 
13.1 
Octopoteuthis sp. 
1 
<0.1 
1 
0.2 
Family Ctenopterygidae 
Ctenopteryx sicula 
64 
0.1 
31 
7.2 
Family Grimalditeuthidae 
Grimalditeuthis bomplandi 
8 
<0.1 
7 
1.6 
Family Architeuthidae 
Architeuthis sp. 
3 
<0.1 
1 
0.2 
Family Histioteuthidae 
3 
<0.1 
3 
0.7 
Histioteuthis dofleini 
1 
<0.1 
1 
0.2 
Histioteuthis meleagroteuthis 
2 
<0.1 
2 
0.5 
Unidentified squid species 
Unknown no. 1 
1 
<0.1 
1 
0.2 
Unknown no. 2 
7 
<0.1 
5 
1.2 
Unknown no. 3 
1 
<0.1 
1 
0.2 
Unidentified upper beaks 
1,533 
3.1 
183 
42.8 
Order Octopoda 
37 
<0.1 
19 
4.4 
Family Argonautidae 
Argonauta sp. (Type A) 
16 
<0.1 
14 
3.3 
Family Tremoctopodidae 
Tremoctopus violaceus 
10 
<0.1 
5 
1.2 
Family Bolitaenidae 
Japatella heat hi 
8 
<0.1 
5 
1.2 
Family Alloposidae 
Alloposus mollis 
3 
<0.1 
3 
0.7 
Unidentified octopus beaks 
4 
<0.1 
4 
0.9 
Class Gastropoda 
31 
<0.1 
10 
2.3 
Class Crustacea 
Order Decapoda 
333 
0.7 
60 
14.0 
Family Galatheidae 
Pleuroncodes planipes 
8 
<0.1 
7 
1.6 
Unidentified shrimp 
26 
<0.1 
12 
2.8 
Order Isopoda 
Total 
299 
49,798 
0.60 
52 
12.1 
