Table 2 Amino acid sites in photophore-bearing species identified by (1) PAML, with a probability higher than 95% (or  >99% in bold) to be under positive selection (ω > 1) according to the BEB analysis under the Branch-site Model A, (2) BUSTED-MH with an evidence ratio threshold >10 for ω > 1 and by (3) MEME that have significant LRT values (adj. p < 0.05) for ω > 1, but are not foreground (photophore-bearing) specific

From: Bioluminescence and environmental light drive the visual evolution of deep-sea shrimp (Oplophoroidea)

Opsin

Hypothesis tested

PAML

BUSTED

MEME

MWS1

Photophore-bearing

83, 92, 134, 161, 165, 187, 252, 310, 368

Oplophoridae

Shallow migrators (<200 m)

MWS2

Photophore-bearing

178, 199, 283

160, 199

124, 155, 160, 199, 350

Oplophoridae

178

160, 199

Shallow migrators (<200 m)

283

LWS2

Photophore-bearing

70, 225, 229, 237, 279

12, 60, 70, 106, 139, 150, 161, 168, 185, 224, 225, 229, 233, 279, 283, 309, 364

Oplophoridae

70, 225, 229, 237, 279

Shallow migrators (<200 m)

125, 243

70, 225, 229, 237

  1. Sites are numbered based on the first sequence in each alignment.