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| Morphological Characterization of Hybrids F1 and F2 in Spotted Mandarinfish Siniperca scherzeri ♀ × Mandarinfish S .chuatsi ♂ |
| XU Miaoyang,GUO Jintao,ZHAO Jinliang,QIAN Yezhou,WU Chao,QIAN De |
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Abstract The morphological characterization of hybrids F1 and F2 in spotted mandarinfish Siniperca scherzeri ♀ × mandarinfish S .chuatsi ♂ were compared with their parents by meristic and morphometric parameters .It was found that the hybrids F1 and F2 showed resemble to the female parents in body spots , but resemble to the male parents in body shape .The numbers of dorsal fins ,anal fins ,pectoral fins and pelvic fins were relatively consistent in these four populations .The uplift angle at the posterior head and anterior dorsal part were more obviuos in the hybrids F1 and F2 than in the female parents .The hybrids F1 and F2 showed a mediated type between the female and male parents in trunk longitudinal axis ,vertical axis ,and dorsal/ventral ratio ,respectively .Euclidean distance cluster analysis revealed that mandarinfish formed independent group ,whereas the hybrids F1 and F2 formed another group with mandarinfish .The discriminating accuracy rate was found 100% in spotted mandarinfish ,81 .8% in mandarinfish ,85 .2% in F1 ,and 58 .8% in F2 .The discriminating scatterplot analysis indicated that the hybrids F 1 and F2 lied between spotted mandarinfish , and mandarinfish , and tended to mandarinfish .The morphological characterization of the hybrid F2 showed some differentiation from the hybrid F1 .These findings would provide some basic data for hybrid identification and hybridization breeding of Siniperca species .
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Received: 25 November 2013
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