Table 1.
Percentage abundance (%N) and frequency of occurrence (%F) of BFT mesopelagic cephalopod and fish prey (total values for other invertebrates and fish are also given). The column “moon phases” indicates the period of lunar cycle in which each prey was found (a: new moon; b: waxing crescent; c: first quarter; d: waxing gibbous; e: full moon; f: waning gibbous; g: third quarter; h: waning crescent).
| Food Category/Family | Species | N% | F% | Moon Phases |
|---|---|---|---|---|
| Mesopelagic cephalopods | 11.79 | 63.79 | a, b, c, d, e, f, g, h | |
| Argonautidae | Argonauta argo | 0.18 | 5.17 | a, c, f |
| Brachioteuthidae | Brachioteuthis riisei | 0.02 | 0.86 | a |
| Chiroteuthidae | Chiroteuthis veranyi | 0.09 | 3.45 | f, g |
| Cranchiidae | Galiteuthis armata | 0.02 | 0.86 | c |
| Enoploteuthidae | Abralia veranyi | 2.11 | 6.90 | a, c, e, f, h |
| Abraliopsis morisii | 0.16 | 4.31 | b, c, e, f, h | |
| Histioteuthidae | Histioteuthis bonnellii | 0.70 | 8.62 | a, c, e, f, g |
| Histioteuthis reversa | 0.14 | 3.45 | a, g | |
| Octopoteuthidae | Octopoteuthis sicula | 0.02 | 0.86 | a |
| Ommastrephidae | Illex coindetii | 2.59 | 36.21 | a, b, c, d, e, f, g, h |
| Ommastrephes bartramii | 0.95 | 8.62 | c, d, e, f, g, h | |
| Todarodes sagittatus | 0.48 | 9.48 | a, b, c, e, f, g | |
| Onycoteuthidae | Ancistroteuthis lichtensteinii | 0.16 | 5.17 | a, d, g |
| Onychoteuthis banksii | 3.25 | 11.21 | a, b, c, d, e, f, g, h | |
| Pyroteuthidae | Pyroteuthis margaritifera | 0.05 | 0.86 | f |
| Sepiolidae | Heteroteuthis dispar | 0.75 | 11.21 | a, b, c, d, f, g, h |
| Thysanoteuthidae | Thysanoteuthis rhombus | 0.02 | 0.86 | g |
| Tremoctopodidae | Tremoctopus violaceus | 0.07 | 2.59 | g, h |
| Teuthida ind | 0.02 | 0.86 | f | |
| Mesopelagic fish | 48.92 | 65.52 | a, b, c, d, e, f, g, h | |
| Gonostomatidae | Gonostoma denudatum | 0.05 | 1.72 | d, e |
| Microstomatidae | Microstoma microstoma | 0.09 | 2.59 | a, d, f |
| Nansenia oblita | 0.05 | 1.72 | b, c | |
| Myctophidae | Benthosema glaciale | 1.68 | 9.48 | a, b, c, e, f |
| Ceratoscopelus maderensis | 9.75 | 37.93 | a, b, c, d, e, f, h | |
| Diaphus holti | 2.04 | 13.79 | a, b, d, e, f | |
| Diaphus rafinesquii | 0.07 | 0.86 | a | |
| Electrona risso | 1.16 | 6.90 | a, b, c, d, f | |
| Hygophum benoiti | 15.02 | 37.93 | a, b, c, d, e, f, h | |
| Hygophum hygomii | 0.84 | 8.62 | a, b, c | |
| Lampanyctus crocodilus | 0.82 | 6.90 | a, e, f | |
| Lampanyctus pusillus | 0.32 | 5.17 | a, b, f | |
| Myctophum punctatum | 3.43 | 26.72 | a, b, c, e, f, h | |
| Notoscopelus elongatus | 1.36 | 10.34 | a, b, c, e, f | |
| Symbolophorus veranyi | 0.02 | 0.86 | e | |
| Paralepididae | Arctozenus risso | 0.14 | 4.31 | b, c |
| Paralepis coregonoides | 0.23 | 4.31 | a, b, d, f, g | |
| Paralepis speciosa | 0.02 | 0.86 | g | |
| Sudis hyalina | 0.07 | 2.59 | b, e, f | |
| Phosichthyidae | Ichthyococcus ovatus | 0.09 | 0.86 | f |
| Vinciguerria attenuata | 0.61 | 6.90 | a, b, c, e | |
| Vinciguerria poweriae | 0.07 | 1.72 | a, f | |
| Sternoptychidae | Argyropelecus hemygimnus | 0.09 | 2.59 | a, b, f |
| Maurolicus muelleri | 0.61 | 13.79 | a, b, c, e, f | |
| Stomiidae | Chauliodus sloani | 10.13 | 21.55 | a, b, d, e, f |
| Stomias boa boa | 0.16 | 4.31 | a, e, f | |
| Other invertebrates | 35.97 | 51.72 | a, b, c, d, e, f, g, h | |
| Other fish | 3.32 | 46.55 | a, b, c, d, e, f, g, h |