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Table 1 Plant traits and responses of A. obtectus to seeds of host, acceptable non-host, and non-host leguminous species

From: How the seed coat affects the mother’s oviposition preference and larval performance in the bean beetle (Acanthoscelides obtectus, Coleoptera: Chrysomelidae, Bruchinae) in leguminous species

Insect responses and plant traits Hosts (H) Acceptable non-hosts (ANH) Non-hosts (NH)
  Seed coat
  Intact Pre-drilled Intact Pre-drilled Intact Pre-drilled
L1-to-pupal mortality inside seeds (%)1 0a (0–2.2) (N = 22) 2.2A (0–2.3) (N = 22) 2.3b (0–7.7) (N = 55) 48.0B (24.4–82.8) (N = 55) 0c (0–0) (N = 63) 75.0C (44.0–93.0) (N = 63)
Adult emergence (%)2 75.3a (46.7–90.5) (N = 22) 93.3A (86.1–97.7) (N = 22) 0b (0–5.0) (N = 55) 26.7B (8.9–48.8) (N = 55) 0c (N = 63) 0C (N = 63)
L1 mortality outside seeds (%)3 24.7c (9.1–53.3) (N = 22) 93.3b (80.5–100) (N = 55) 100a (100–100) (N = 63)
Number of eggs laid/female4 38.6 ± 0.8a (N = 154) 18.6 ± 0.7b (N = 418) 13.5 ± 0.5c (N = 630)
Seed mass (mg)5 340.8 ± 4.3a (N = 773) 235.6 ± 3.9b (N = 1823) 70.3 ± 1.6c (N = 2052)
Seed coat thickness (mm)6 0.09 ± 0.001c (N = 374) 0.10 ± 0.001b (N = 933) 0.13 ± 0.002a (N = 1098)
  1. Kruskal–Wallis ANOVAs: 1Intact seed coat: KW H’2,140 = 28.4, p < 0.001, pre-drilled seed coat: KW H’2,140 = 60.6, p < 0.001. 2Intact seed coat: H’2,140 = 93.6, p < 0.001, pre-drilled seed coat: H’2,140 = 120.9, p < 0.001; 3H’2,140 = 77.9, p < 0.001; 4H’2,1202 = 283.0, p < 0.001; 5H’2,4648 = 2515.2, p < 0.001; 6H’2,2405 = 216.2, p < 0.001. In comparisons between intact or pre-drilled seeds of plant groups, medians or means signed with different lower or upper case letters in the same row are significantly different, resp. 1−3Medians and quartiles; 4−6Means ± SEs. A comparison of adult emergence between intact and pre-drilled seeds of H plants was not significant (Zadj = 0.7627, p = 0.4456), whereas comparisons between Hintact and ANHintact (Zadj = 6.1818, p < 0.001), between Hpre-drilled and ANHpre-drilled (Zadj = 5.6180, p < 0.001), and between ANHintact and ANHpre-drilled (Zadj = 3.3525, p < 0.001) were significant (Wald-Wolfowitz Runs tests)