Relationship between nymphal development and body weight at adult emergence in giant Locusta migratoria individually reared at LD 12:12h (A) and LD 16:8h (B). The numbers presented in parentheses denote the number of nymphal stadia. In (A), the sample size were N = 20 and 24 for females with 5 and 6 nymphal instars, respectively; and N = 22 and 3 for males with 5 and 6 nymphal instars, respectively. In (B), the sample sizes were N = 19 and 28 for females with 5 and 6 nymphal instars, and N = 49 and 2 for males with 5 and 6 nymphal instars. Relationship between body weight at hatching and nymphal development in giant Locusta migratoria individually reared at LD 12:12h (C) and LD 16:8h (D). Asterisk indicates p < 0.05.