s2 + species_12 <-> s3
s65 <-> s10
s12 -> s11
s11 + s13 <-> s14
species_10 + species_11 <-> s20
s67 <-> s21
s22 + s24 <-> s25
s68 -> s22
s70 <-> s26
species_5 <-> s68
s80 <-> s27
s69 <-> s28
s79 <-> s29
s31 -> s30
s30 + s32 <-> s33
species_15 <-> s31
s81 <-> s35
s82 <-> s34
s37 + s89 <-> s38
s77 <-> s39
s78 <-> s40
s44 + s87 <-> s45
s47 + s90 <-> s48
s76 <-> s49
s75 <-> s50
s51 + s53 <-> s54
s52 -> s51
s55 <-> s57
s57 + s58 <-> s59
species_8 + species_9 <-> s57
species_6 <-> s52
s62 + species_2 <-> s63
s85 + s86 <-> s83
s43 -> s87
s36 -> s89
s46 -> s90
s74 -> species_2
s73 -> species_1
species_1 + species_4 <-> species_3
s1 -> species_12
species_7 <-> s73
species_16 <-> species_12
species_17 <-> s11
species_18 <-> s22
species_19 <-> s51
species_20 <-> s55
species_21 <-> s73
species_22 <-> species_2
species_23 <-> s90
species_24 <-> s89
species_25 <-> s87
species_26 <-> s30
species_27 <-> s74