Phylogénie Et Evolution Du Comportement Social Chez Les Blattes ...

Ev o l u t i o n d u c o m p o r t e m e n t s o c i a lFigure 1: A scheme for the establishment of a successive event-pairing method to analysethe evolution of behavioural sequences. In this theoretical example, 4 species with the samebehavioural repertoire (acts A, B, C, D) are studied and three behavioural sequences wereobserved (1) which are used to build transition matrices (2). For the construction of suchmatrices, the individuals are alternatively the actor (Ac) and the receiver (R). The occurrenceof transitions within these matrices are used in a second step to characterize each species in aphylogenetic matrix (3) which in turn is analysed to build a phylogenetic tree (4).Figure 2: Accumulation curve of the number of different transitions according to the numberof observation sessions for the species Eublaberus distanti.Figure 3: Analysis A: Strict consensus of the four most parsimonious trees obtained (L=15,CI=0.80, RI=0.50) with the data set based only on the behavioural repertoires. Analyses B-E:Most parsimonious trees obtained with the four different data sets (B: presence-absence ofbehavioural transitions, L = 217, CI = 0.86, RI = 0.58; C: presence-absence and frequenciesof behavioural transitions, L = 300, CI = 0.87, RI = 0.55; D: morphological and moleculardata set, L = 351, CI = 0.88, RI = 0.50; E: molecular, morphological and behavioural data –including frequencies, L = 659, CI = 0.86, RI = 0.48). Numbers above and below branches arebranch lengths (under fast optimization) and bootstrap/bremer values, respectively.300