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Table 1 Coordinates of the studied locations with the approximate total area of the seaweed bed in km2 between brackets, historical background concerning exploitation of the natural seaweed bed and the average relative abundance of P. gynodiporata sp. n. in the respective locations. Haplotype occurrence per beach and h (haplotype diversity), π (nucleotide diversity), Tajima’s D and Fu’s Fs neutrality test values with the corresponding p-values between brackets of the studied populations at the northeastern Brazilian coast

From: Low genetic but high morphological variation over more than 1000 km coastline refutes omnipresence of cryptic diversity in marine nematodes

Beach Coordinate Seaweed Historical background P. gynodiporata sp. n. Rel. Abund. n° haplotype Year n h π D Fs
Flecheiras(CE) (1.49 km2) 3°13′08″S 39°16′18″W Gracilaria Exploited 15.56 ± 6.39 5 (F1, F2, C7, C8, PV2) 2013 27 0.5783 ± 0.0961 0.0034 ± 0.0024 −0.3561 (0.3920) 0.0766 (0.5110)
Muriú(RN) (1.86 km2) 5°33′43″S 35°14′21″W Gracilaria Exploited 26.73 ± 8.31 4 (M1, M2, M3, C8) 2013 24 0.3080 ± 0.1180 0.0008 ± 0.0009 −1.4943 (0.0430) −2.3829 (0.0030)
Cupe(PE) (0.30 km2) 8°27′29″S 34°58′58″W Sargassum Not exploited 37.73 ± 7.16 6 (M2, C2, C5, C7, C8, C9) - (C3, C4, C6, C7, C8, C10) 2011-2012 33 - 25 0.3667 ± 0.122 - 0.3807 ± 0.1058 0.0012 ± 0.0012- 0.0011 ± 0.0011 −2.0875 (0.0040) -1.6480 (0.0160) −4.3714 (0.0000) -4.0239 (0.0000)
P. Verde(AL) (4.54 km2) 9°39′55″S 35°41′54″W Sargassum Not exploited 22.95 ± 2.47 5 (PV1, PV2, PV3, C4, C8) 2012 20 0.3684 ± 0.1351 0.0019 ± 0.0016 −1.9723 (0.0130) −1.7287 (0.0590)
  1. Abbreviation: Rel. Abund relative abundance