| HONG Wanshu,CHEN Shixi,ZHANG Qiyong,WANG Qiong. 2007. Reproductive ecology of the mudskipper Boleophthalmus pectinirostris. Acta Oceanologica Sinica, (4):72－81 |
| Reproductive ecology of the mudskipper Boleophthalmus pectinirostris |
| Reproductive ecology of the mudskipper Boleophthalmus pectinirostris |
| Received:July 17, 2006 Revised:January 08, 2007 |
| DOI： |
| Key words:Boleophthalmus pectinirostris reproductive ecology burrow fish |
| 中文关键词: Boleophthalmus pectinirostris reproductive ecology burrow fish |
| 基金项目: |
| Author Name | Affiliation | E-mail | | HONG Wanshu | State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
Department of Oceanography, Xiamen University, Xiamen 361005, China | wshong@xmu.edu.cn | | CHEN Shixi | State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
Department of Oceanography, Xiamen University, Xiamen 361005, China | | | ZHANG Qiyong | Department of Oceanography, Xiamen University, Xiamen 361005, China | | | WANG Qiong | State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
Department of Oceanography, Xiamen University, Xiamen 361005, China | |
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| Abstract: |
| The reproductive ecology of the mudskipper Boleophthalmus pectinirostris was investigated during the spawning season in the Funing Bay, Fujian, China. The fish burrows were basically Y-shaped and had two openings onto the mudflats. Part of the intersection at the center of the burrow was dilated to form a "spawning chamber". The dissolved oxygen concentrations (0.40~0.65 mg/dm3)of water 15 cm deep inside the burrows were much lower than those (5.96~6.19 mg/dm3) of intertidal pool water. Water temperatures inside the burrows were much lower than those of intertidal pools. Field investigations indicated that eggs were laid on the inner wall and ceiling of the spawning chamber by means of filamentous attachments, and a male stayed inside the burrows to guard it. Field investigations also suggested that fish of both sexes constructed mud burrows by themselves but that the spawning chamber was made only in the male burrow. The male attracted a female to his burrow for mating and spawning. There was no water in the spawning chamber, and thus the eggs were exposed to the air in the chamber. Changes in spawning readiness and gonadosomatic index indicated that synchronization of spawning was related to the semi-lunar periodicity, and this is the first report of this relationship in the mudskippers. |
| 中文摘要: |
| The reproductive ecology of the mudskipper Boleophthalmus pectinirostris was investigated during the spawning season in the Funing Bay, Fujian, China. The fish burrows were basically Y-shaped and had two openings onto the mudflats. Part of the intersection at the center of the burrow was dilated to form a "spawning chamber". The dissolved oxygen concentrations (0.40~0.65 mg/dm3)of water 15 cm deep inside the burrows were much lower than those (5.96~6.19 mg/dm3) of intertidal pool water. Water temperatures inside the burrows were much lower than those of intertidal pools. Field investigations indicated that eggs were laid on the inner wall and ceiling of the spawning chamber by means of filamentous attachments, and a male stayed inside the burrows to guard it. Field investigations also suggested that fish of both sexes constructed mud burrows by themselves but that the spawning chamber was made only in the male burrow. The male attracted a female to his burrow for mating and spawning. There was no water in the spawning chamber, and thus the eggs were exposed to the air in the chamber. Changes in spawning readiness and gonadosomatic index indicated that synchronization of spawning was related to the semi-lunar periodicity, and this is the first report of this relationship in the mudskippers. |
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