Comparative Analysis of the Morphological Characteristics Between Hybrid F1 by Epinephelus moara (♀) × E.septemfasciatus (♂) and the Offspring of Its Parents

Abstract:

The current study described the morphological characteristics of the hybrid F1 by Epinephelus moara (♀) × E. septemfasciatus(♂) and the relationship to the offspring of its parents. The hybrid F1 of E. moara (♀) × E. septemfasciatus(♂) at 6 months old were measured and analyzed by the conventional morphometrics and the cluster analysis. Five traits of the countable characteristics and nine traits of the measurable characteristics of the hybrid F1 of E. moara (♀) × E.septemfasciatus(♂), E.moara, and E.septemfasciatus were analyzed. The result showed that the body shape of the hybrid F1 of E.moara (♀) × E.septemfasciatus(♂) were oval, flat and stout with seven taupe lateral bands on the side of body surface. The body color of the hybrid F1 by E.moara (♀) × E.septemfasciatus(♂) were a mixture of both E.moara and E.septemfasciatus. Among twelve measurable and countable traits for hybrid index analysis, there were six traits approached to E.moara, five traits approached to E. septemfasciatus and one trait approached to both the E.moara and E.septemfasciatus. The result of cluster analysis showed that the hybrid F1 of E.moara (♀) × E.septemfasciatus(♂) was closed to the female E.moara in the morphology. The study indicated that the body color of the hybrid F1 by E.moara (♀) × E.septemfasciatus(♂) appeared to be a mixture, and the morphological characteristics were closed to the female E. moara.