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Table 4 Comparison of heterochrony rates between germ layers and tissue types

From: Evolution of eumalacostracan development—new insights into loss and reacquisition of larval stages revealed by heterochrony analysis

Germ layer Tissue type Events Mean heterochrony rate Mean heterochrony rate of germ layer
Ectoderm Epidermis 6 1.32 1.12
Neural tissue 7 0.91
Mesoderm Muscle tissue 18 1.72 1.72
  1. The table shows event numbers and heterochrony rates for the three tissue types from which the events were coded: Epidermis, muscle tissue, and nervous tissue, as well as the germ layers the tissues originate from (ectoderm, mesoderm). The heterochrony rate of an event is the event-specific number of heterochronic changes shown by PGi for the entire superconsensus tree, multiplied by the mean bootstrap value for the event. Tissue-specific heterochrony rates were calculated by forming the mean heterochrony rate per event for all events of epidermis neural tissue or muscle development. Mean heterochrony rates of the germ layers were calculated from these values.