Food availability determines body size and latency times in juveniles.

<p>Mean body sizes during the experiment and median latency times from presentation of the stimulus until the fish left the shelter. During the cognition tests of juveniles the treatment groups differed in size (A). They were still subject to different feeding rations, which is likely to explain the substantial differences in decision latencies: N_HH and S_LH fish took significantly longer to enter the choice area than S_HL and N_LL fish (B). These differences had disappeared by the time adults were tested, since at this stage all fish were of similar size (C), received similar feeding rations eliminating potential motivational differences, and consequently had similar decision latencies (D). Experimental food treatments: N_HH (high food treatment), N_LL (low food treatment), S_HL (switched from high to low food), and S_LH (switched from low to high food).</p

Cognitive performance of juvenile and adult <i>Simochromis pleurospilus</i> in dependence of food ration.

<p>Using a binary probit-link GzLM, we tested the influence of early and late food treatment before and after the switches (fixed factors) on the total number of correct choices (dependent variable), including the number of trials the fish participated as the independent variable. Not all adults had previously been tested; therefore, whether or not the fish had been tested as juveniles was included in the adult model to control for experience differences.</p

Test of cognitive performance.

<p>Schematic representation of the set-up used to test the cognitive abilities of <i>Simochromis pleurospilus</i>. Letters refer to “a” choice tube with cut out (dotted line), “b” PVC plate, “c” clear rise able sheet of Plexiglas, “d” elevated filter used as shelter, “e” stimulus cues, “f” neutral area, and “g” choice area.</p

Model and Scanning algorithm

Mathematica code to find combinations of size-dependent mortality and size-independent mortality where F(sM) has three zero

Data for Taborsky, Guyer & Demus, J EvolBiol

There are three Excel Worksheets. Worksheet 'total length males females' gives the total lengths of undisturbed pairs measured in 2005 and 2006 under water in Lake Tanganyika (refers to the data used for supplementary Figure S3 if Taborsky et al., JEB). Worksheet 'total length & habitat quality' gives data of total length of males and females of 30 pairs and the stone cover present in the territories of these pairs (refers to analysis in section "Do larger fish occupy territories with more stone cover?" of the Results in Taborsky et al., JEB.Worksheet 'Habitat manipulation' gives the total lengths of original and final pairs and the stone cover data before and after manipulation of the habitat manipulation experiment (analysis in section "Does territory stone cover predict the size of settling fish?"

Raw_data_ProcB

Raw_data_Proc

Electronic supplementary material to article 'Consistent cooperation in a cichlid fish is caused by maternal and developmental effects rather than heritable genetic variation

Additional information on experimental subjects, study design, behavioural tests and statistical method

Explanatory_text_file_Nyman_etal_2018

Explanatory text file for dataset of experiment 1 and experiment 2 in Nyman et al 201

Dataset_Expt1_Nyman_etal_2018

Dataset for experiment 1 in Nyman et al 201

Dataset_Expt2_Nyman_etal_2018

Dataset for experiment 2 in Nyman et al 201