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Table 2 Adult mating behavior and life history traits (mean ± SE) of Dendrolimus punctatus when larvae fed on different host species and different needle age based on independent-samples T test

From: Life history traits in a capital breeding pine caterpillar: effect of host species and needle age

Parameters Host species Needle age
P. massoniana P. elliottii t Previous-year needles Current-year needles t
Mating latency (h) 1.37 ± 0.18 2.11 ± 0.20 − 2.72** 1.37 ± 0.18 1.59 ± 0.29 − 0.65
Mating duration (h) 16.92 ± 0.45 15.50 ± 0.28 2.68** 16.92 ± 0.45 16.38 ± 0.45 0.75
Oviposition duration (days) 5.08 ± 0.26 5.50 ± 0.27 − 1.11 5.08 ± 0.26 5.00 ± 0.54 0.16
Produced fecundity (eggs/female) 435.46 ± 19.67 202.55 ± 12.78 9.74** 435.46 ± 19.67 350.08 ± 25.88 2.56*
Remnant fecundity (eggs/female) 4.46 ± 1.49 17.46 ± 4.47 − 2.86** 4.46 ± 1.49 11.25 ± 4.16 − 1.89
Fertility (%) 76.93 ± 4.18 65.58 ± 4.64 1.77 76.93 ± 4.18 70.60 ± 7.94 0.71
Male longevity (days) 6.50 ± 0.23 9.46 ± 0.36 − 7.10** 6.50 ± 0.23 8.58 ± 0.43 − 4.72**
Female longevity (days) 6.46 ± 0.29 8.82 ± 0.27 − 5.88** 6.46 ± 0.29 7.42 ± 0.68 − 1.52
Fitness index 53.66 ± 2.42 3.57 ± 0.23 19.70** 53.66 ± 2.42 23.80 ± 1.76 8.15**
  1. Asterisk indicate significant differences between host species and needle age within parameters of adult life history traits (*P < 0.05; **P < 0.01)