Morphologic characteristics of the sagittal otoliths of fishes of the genus <em>Apogon</em> in China’s seas

YE Zhen-jiang; ZHANG Chi; WANG Ying-jun; LI Zhen-hua

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YE Zhen-jiang, ZHANG Chi, WANG Ying-jun, LI Zhen-hua. Morphologic characteristics of the sagittal otoliths of fishes of the genus Apogon in China’s seas[J]. Haiyang Xuebao, 2010, 32(5): 87-92.

Citation:

YE Zhen-jiang, ZHANG Chi, WANG Ying-jun, LI Zhen-hua. Morphologic characteristics of the sagittal otoliths of fishes of the genus Apogon in China’s seas[J]. Haiyang Xuebao, 2010, 32(5): 87-92.

YE Zhen-jiang, ZHANG Chi, WANG Ying-jun, LI Zhen-hua. Morphologic characteristics of the sagittal otoliths of fishes of the genus Apogon in China’s seas[J]. Haiyang Xuebao, 2010, 32(5): 87-92.

Citation:

YE Zhen-jiang, ZHANG Chi, WANG Ying-jun, LI Zhen-hua. Morphologic characteristics of the sagittal otoliths of fishes of the genus Apogon in China’s seas[J]. Haiyang Xuebao, 2010, 32(5): 87-92.

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Morphologic characteristics of the sagittal otoliths of fishes of the genus Apogon in China’s seas

1.
College of Fisheries, Ocean University of China, Qingdao 266003, China;
2.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2009-12-14

Abstract

Abstract

Based on 105 specimens collected in the coastal waters of China, morphological characteristics of the sagittal otoliths were analyzed for the eight species of the genus Apogon (Apogon lineatus, A. siriatus, A. ellioti A. arafurae A. cathetogramma, A. semilineatus A. quadrifaosciatus and A. carinatus)inhabiting China’s seas.Results show that the sagittae of the eight species is similar in shape, all have narrow anterior part, wide posterior part, zigzag dorsal side and arcuate ventral side with a notch in the middle of the dorsal side, and the sulcus is wide. Otoliths have aspect ratio of 1.35 to 1.63, rectangularity of 0.67 to 0.77 and circularity of 14.77 to 24.99 for eight fishes. The cluster analysis is done based on the above-mentioned three kinds of morphological parameters, and results indicte that eight kinds of fishes were divided into three groups: Apogon lineatus, A. siriatus, A. ellioti and A. arafurae as a group; A. cathetogramma, A. semilineatus and A. quadrifaosciatus as a group; A. carinatus as a group alone. Sagittal shape differs among species, a systemic taxonomy is designed for eight fishes according to the sulcus acusticus shape and otolith form, and results of systemic taxonomy and cluster analysis have shown greater consistency in characteristics of the interspecific relationships. Results indicte that the trend and width of the sulcus acusticus, as well as the smoothness and other characteristics of outer contour are important characteristics of otoliths morphological classification for the genus Apogon, otoliths morphology has a good prospect of application in fish systematics.
- Apogon,
- otolith,
- shape,
- taxonomy

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References(25)

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