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Table 3
Comparison with other studies on the diet of yellowfin tuna. The quoted families were found either in this study or in at least one other study where one of the main taxa were identified.
| Taxon | This study, Bay of Bengal FL range (cm) = 42.0–171.0 No. of fish examined = 213 No. of non-empty stomachs = 153 |
Varghese and Somvanshi, 2016, Arabian sea, FL range (cm) = 48.0–165.0 No. of fish examined = 406 No. of non-empty stomachs = 343 |
Rohit et al., 2010 Andhra Pradesh coast FL range (cm) = 67.0–174.0 No. of fish examined = 165 No. of non-empty stomachs = 146 |
Kumar and Ghosh (2020), Western Bay of Bengal FL range (cm) = 18.0–186.0 No. of fish examined = 1412 No. of non-empty stomachs = 923 |
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|---|---|---|---|---|---|---|---|---|---|---|
| %N | %W | %F | %N | %W | %F | %N | %W | %F | %F | |
| Diphyidae | 0.1 | 0.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Solenoceridae | 4.5 | 5.2 | 2.8 | 0.0 | 0.0 | 0.0 | 25.8 | 6.7 | 14.4 | 0.0 |
| Shrims unid. | 2.5 | 1.3 | 2.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Portunidae | 18.8 | 10.7 | 11.6 | 13.1 | 10.7 | 13.4 | 15.6 | 20.4 | 30.1 | 0.0 |
| Squillidae | 1.4 | 1.7 | 2.3 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.7 | 0.0 |
| Nanosquillidae | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Squilla unid. | 0.2 | 0.2 | 0.5 | 3.0 | 0.1 | 7.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Total crustaceans | 27.4 | 19.1 | 19.4 | 16.2 | 10.8 | 19.2 | 41.5 | 27.1 | 45.2 | 18.4 |
| Ancistrocheiridae | 0.0 | 0.0 | 0.0 | 1.0 | 2.7 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Bolitaenidae | 0.0 | 0.0 | 0.0 | 1.0 | 0.5 | 4.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Cranchiidae | 0.0 | 0.0 | 0.0 | 0.5 | 0.2 | 3.5 | 0.0 | 0.0 | 0.0 | 0.0 |
| Enoploteuthidae | 0.9 | 0.7 | 1.1 | 1.1 | 1.2 | 5.8 | 0.0 | 0.0 | 0.0 | 0.0 |
| Onychoteuthidae | 0.3 | 0.3 | 0.3 | 1.8 | 3.0 | 10.5 | 0.0 | 0.0 | 0.0 | 0.0 |
| Histioteuthidae | 5.8 | 5.9 | 7.9 | 0.1 | 0.2 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Octapodidae | 0.4 | 0.4 | 0.6 | 0.1 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Ommastrephidae | 25.7 | 26.4 | 21.7 | 27.5 | 39.4 | 53.5 | 8.6 | 19.1 | 25.3 | 0.0 |
| Spirulidae | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Loliginidae | 1.8 | 2.8 | 3.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Thysanoteuthidae | 0.0 | 0.0 | 0.0 | 0.3 | 1.3 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Tremoctopodidae | 0.0 | 0.0 | 0.0 | 0.2 | 0.1 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Argonautidae | 4.4 | 2.5 | 3.3 | 0.5 | 0.3 | 4.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Cephalopoda unid. | 2.5 | 2.0 | 3.4 | 5.1 | 2.3 | 14.6 | 10.7 | 0.2 | 24.0 | 0.0 |
| Total cephalopods | 41.8 | 41.0 | 41.4 | 41.1 | 51.9 | 59.3 | 0.0 | 0.0 | 0.0 | 44.9 |
| Pyrosomatidae | 1.7 | 1.0 | 2.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Salpidae unid. | 0.1 | 0.0 | 0.3 | 1.1 | 0.0 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 |
| Total tunicates | 1.8 | 1.0 | 2.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Clupeidae | 0.1 | 0.3 | 0.3 | 0.0 | 0.0 | 0.0 | 1.6 | 2.9 | 13.0 | 4.6 |
| Acropomatidae | 0.4 | 0.5 | 0.6 | 0.6 | 0.1 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Acanthuridae | 0.0 | 0.0 | 0.0 | 0.2 | 0.3 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Berycidae | 0.0 | 0.0 | 0.0 | 0.7 | 1.3 | 59.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Bramidae | 0.0 | 0.0 | 0.0 | 0.6 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Carangidae | 3.9 | 6.1 | 5.4 | 0.5 | 4.7 | 2.9 | 1.5 | 4.0 | 6.2 | 0.0 |
| Carangidae unid. | 0.1 | 0.1 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Centrolophidae | 0.0 | 0.0 | 0.0 | 0.9 | 0.6 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 |
| Chauliodontidae | 0.0 | 0.0 | 0.0 | 0.3 | 0.2 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Champsodontidae | 0.0 | 0.0 | 0.0 | 2.5 | 0.6 | 7.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Coryphaenidae | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Diretmidae | 0.0 | 0.0 | 0.0 | 0.3 | 0.2 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Engraulidae | 0.0 | 0.0 | 0.0 | 0.5 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Sphyraenidae | 0.3 | 5.6 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Scoperlacidae | 0.0 | 0.0 | 0.0 | 0.2 | 0.1 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Sternoptychidae | 0.0 | 0.0 | 0.0 | 1.5 | 0.4 | 7.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Nomeidae | 2.2 | 3.0 | 3.1 | 5.8 | 3.4 | 16.9 | 0.0 | 0.0 | 0.0 | 0.0 |
| Monocanthida | 0.0 | 0.0 | 0.0 | 2.9 | 0.7 | 3.5 | 0.0 | 0.0 | 0.0 | 0.0 |
| Myctophidae | 1.0 | 0.8 | 1.7 | 7.4 | 0.8 | 2.9 | 1.8 | 0.9 | 1.4 | 0.0 |
| Microstomatidae | 0.0 | 0.0 | 0.0 | 2.3 | 0.2 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Muraenesocidae | 0.0 | 0.0 | 0.0 | 0.2 | 0.5 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Scombridae | 0.1 | 1.4 | 0.3 | 1.1 | 9.9 | 7.0 | 0.3 | 2.5 | 2.8 | 0.0 |
| Trichiuridae | 0.9 | 1.4 | 0.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Exocoetidae | 4.4 | 7.1 | 4.8 | 3.3 | 7.1 | 13.4 | 0.4 | 2.8 | 2.7 | 0.0 |
| Flying fishes unid. | 0.6 | 0.7 | 1.1 | 0.1 | 0.0 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Gempylidae | 0.0 | 0.0 | 0.0 | 1.7 | 3.9 | 8.1 | 0.0 | 0.0 | 0.0 | 0.0 |
| Priacanthidae | 1.6 | 1.4 | 1.7 | 0.0 | 0.0 | 0.0 | 26.1 | 39.3 | 28.1 | 0.0 |
| Paralepididae | 0.0 | 0.0 | 0.0 | 1.6 | 0.2 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| Phosichthyidae | 0.0 | 0.0 | 0.0 | 0.5 | 0.3 | 2.3 | 0.0 | 0.0 | 0.0 | 0.0 |
| Bregmacerotidae | 0.4 | 0.4 | 0.8 | 0.0 | 0.0 | 0.0 | 1.3 | 0.4 | 4.1 | 0.0 |
| Trachichthyidae | 0.1 | 0.3 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Balistidae | 1.3 | 1.4 | 1.7 | 0.5 | 0.2 | 4.1 | 0.3 | 0.0 | 2.1 | 0.0 |
| Omosudidae | 0.0 | 0.0 | 0.0 | 0.8 | 0.6 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Ostraciidae | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Tetraodontidae | 1.8 | 2.9 | 2.5 | 0.0 | 0.0 | 0.0 | 0.3 | 0.1 | 2.1 | 1.3 |
| Fish larva | 2.3 | 0.2 | 2.3 | 0.7 | 0.0 | 2.3 | 0.0 | 0.0 | 0.0 | 0.0 |
| Teleostea unid. | 7.4 | 4.5 | 8.5 | 1.9 | 0.8 | 7.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Total fish | 28.9 | 38.1 | 36.8 | 39.7 | 37.2 | 61.6 | 0.0 | 0.0 | 0.0 | 30.9 |
| Other organisms total | 0.0 | 0.0 | 0.0 | 3.0 | 0.1 | 3.5 | 0.0 | 0.0 | 0.0 | 0.0 |
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