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Table 1 Description of embryonic and larval stages used for the transcriptomic and amino acid content analyses

From: Tyrosine pathway regulation is host-mediated in the pea aphid symbiosis during late embryonic and early larval development

  Group Group abbreviation Developmental stages Size (length or weight) External morphological features
Embryos Early embryos EE 0-15 ≤ 400 μm *No visible eyes *Very slight body pigmentation
Intermediate embryos IE 16-18 400-800 μm *Developing eye spots in many individuals *Pigmented bodies
  Late embryos LE 19-20 > 800 μm *Developed eye spots in all individuals *Highly pigmented bodies
Larvae First instar larvae L1 1st larval ≤ 0.2 mg 0-24 hours old
L1 early ≤ 6 hours old
   L1 late    ≥ 15 hours old
  1. Assignment of embryos to the three groups (EE, IE or LE) was based on size range and on morphological criteria detailed in this table (see Figure 1A for exemplary microphotographs). The developmental stages were defined according to Miura et al.[13]. Larval stages were determined according to the development time after laying.