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Table 1 Fork length, body weight, and gonadosomatic index of female chub mackerel analyzed in the study period

From: Increased expression of kisspeptin and GnRH forms in the brain of scombroid fish during final ovarian maturation and ovulation

Analyses Parameters Ovarian stages
   LV GVM HY OV POV
Kiss/GnRH mRNAs Fork length (cm) 33.6 ± 0.4 34.7±0.7 34.6±0.5 33.0±0.4 34.7±0.6
  Body weight (g) 523.6 ±24.1 637.9±54.7 692.3±38.1 522.1±13.7 591.5±26.0
  GSI (%) 7.3 ± 1.4 7.7±1.6 13.7±2.8 7.0±0.8 6.2±1.1
  n 6 6 5 6 6
GnRH peptides Fork length (cm) 33.5 ± 0.5 34.6 ± 0.8 34.9 ± 0.5 33.2 ± 0.4 35.3 ± 1.3
  Body weight (g) 521.9 ±24.1 578.6 ± 30.0 659.9 ± 44.0 513.5 ± 19.3 694.7 ± 94.4
  GSI (%) 6.7 ± 0.8 4.5 ± 0.66 8.2 ± 1.8 6.9 ± 1.2 8.0 ± 2.7
  n 6 5 4 6 4
  1. Values are expressed as the mean ± SEM. LV, late vitellogenesis; GVM, germinal vesicle migration; HY, hydration; OV, ovulation; POV, post-ovulation; GSI, gonadosomatic index (GSI=gonad weight/body weight without gonads x 100).