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. 2017 Jun 20;7:3905. doi: 10.1038/s41598-017-03568-1

Table 2.

Average abundance (mean MaxN), standard error (SE), and NWHI:MHI abundance ratios for roving predator species sampled in the Hawaiian Archipelago.

Species Common Name Main Hawaiian Islands (MHI) Northwestern Hawaiian Islands (NWHI) Abundance Ratio
n Mean MaxN % Drops Min. depth (m) Max.depth (m) Islands n Mean MaxN % Drops Min. depth (m) Max.depth (m) Islands NWHI:MHI
Barracuda (Sphyraenidae)
Sphyraena barracuda Great barracuda 2 0.02 ± 0.01 1.9 30.2 53.9 Molokai
Snappers (Lutjanidae)
Aprion virescens Green jobfish 43 0.41 ± 0.11 26.2 13.4 94.8 All 80 1.03 ± 0.16 73.1 2.7 100.0 All 2.51
Jacks (Carangidae)
Main species
Carangoides orthogrammus Island jack 40 0.37 ± 0.13 15.9 17.1 96.6 Maui, Lanai, Oahu 15 0.19 ± 0.08 9.0 5.5 50.3 FFS, LIS, PHR 0.51
Caranx melampygus Bluefin trevally 46 0.43 ± 0.09 26.2 3.0 46.6 All 43 0.55 ± 0.14 34.6 2.7 50.3 All 1.28
Caranx ignobilis Giant trevally 9 0.08 ± 0.03 7.5 30.8 80.8 Maui, Molokai, Oahu 67 0.86 ± 0.29 28.2 2.7 50.3 All 10.75
Pseudocaranx cheilio Thick-lipped jack 37 0.47 ± 0.31 10.3 40.5 100.0 PHR, MID
Seriola dumerili Greater amberjack 6 0.06 ± 0.03 4.7 42.7 92.0 Molokai, Oahu 55 0.71 ± 0.39 14.1 23.5 93.3 FFS, LIS, PHR 11.83
Seriola rivoliana Almaco jack 6 0.06 ± 0.03 2.8 21.3 92.0 Molokai, Oahu 27 0.35 ± 0.17 16.7 24.7 100.0 LIS, PHR, MID 5.83
Unidentified Seriola sp.* 7 0.09 ± 0.04 7.7 60.4 FFS, LIS, PHR
Subtotal Seriola sp.** 12 0.12 ± 0.05 6.5 21.3 92.0 89 1.13 ± 0.42 29.5 23.5 100.0 9.42
Other species
Alectis ciliaris Threadfin jack 5 0.05 ± 0.02 0.9 58.5 Oahu
Carangoides ferdau Barred jack 4 0.04 ± 0.03 1.9 14.3 30.5 Maui, Oahu 1 0.01 ± 0.01 1.3 37.8 FFS 0.25
Elagatis bipinnulata Rainbow runner 1 0.01 ± 0.01 0.9 14.9 Lanai
Gnathanodon speciosus Yellow trevally 2 0.02 ± 0.01 1.9 14.3 42.4 Maui, Oahu `
Scomberoides lysan Queenfish 3 0.03 ± 0.02 2.8 3.05 30.5 Lanai, Maui, Oahu
Seriola lalandi Yellowtail amberjack 5 0.06 ± 0.03 2.6 65.5 85.3 LIS, PHR
Unidentified Carangidae 9 0.08 ± 0.04 4.7 4.6 96.6 Maui, Oahu 3 0.04 ± 0.03 2.6 43.6 55.8 FFS, PHR 0.50
Subtotal Other species 24 0.22 ± 0.05 11.2 4.6 96.6 9 0.12 ± 0.06 6.4 37.8 85.3 0.55
Subtotal all jacks 131 1.22 ± 0.19 48.6 4.6 96.6 260 3.33 ± 0.7 70.5 2.7 100.0 2.73
Sharks (Carcharhinidae)
Main species
Carcharhinus galapagensis Galapagos shark 48 0.62 ± 0.15 30.8 6.1 81.1 All
Carcharhinus plumbeus Sandbar shark 13 0.12 ± 0.05 8.4 54.9 95.1 Maui, Molokai, Oahu 7 0.09 ± 0.03 9.0 55.8 93.3 FFS, LIS, PHR 0.75
Triaenodon obesus Whitetip reef shark 26 0.14 ± 0.05 25.6 5.8 61.6 All
Other species
Galeocerdo cuvier Tiger shark 5 0.05 ± 0.02 4.7 4.6 55.8 Maui, Molokai, Oahu 1 0.01 ± 0.01 1.3 86.6 PHR 0.20
Carcharhinus amblyrhynchos Grey reef shark 2 0.02 ± 0.01 1.9 24.1 68.3 Maui, Oahu 1 0.01 ± 0.01 1.3 73.2 FFS 0.50
Carcharhinus melanopterus Blacktip reef shark 1 0.01 ± 0.01 0.9 14.9 Lanai
Unidentified shark 1 0.01 ± 0.01 0.9 57.0 Oahu 2 0.03 ± 0.02 2.6 38.1 73.2 FFS, LIS 3.00
Subtotal Other species 9 0.08 ± 0.03 7.5 4.6 68.3 4 0.05 ± 0.03 3.8 38.1 73.2 0.63
Subtotal all sharks 22 0.21 ± 0.05 15.9 4.6 95.1 85 1.09 ± 0.17 55.1 5.8 93.3 5.19
Total mobile predators 198 1.85 ± 0.27 67.3 425 5.45 ± 0.84 85.1 2.95

% Drops indicate the percentage number of BRUVS deployments where a species or group is observed. FFS: French Frigate shoals, LIS: Lisianski, PHR: Pearl and Hermes Reef, MID: Midway. *Seriola sp. that could not be differentiated between Seriola dumerili and Seriola rivoliana. pooled totals of Seriola dumerili, Seriola rivoliana, and unidentified Seriola sp.