Reproductive ecology of the mudskipper Boleophthalmus pectinirostris  

作　　者：HONG Wanshu CHEN Shixi ZHANG Qiyong WANG Qiong 

机构地区：[1]State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China [2]Department of Oceanography, Xiamen University, Xiamen 361005, China

出　　处：《Acta Oceanologica Sinica》2007年第4期72-81,共10页海洋学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China under contract No. 40476056 ;the Key Projects of Science and Technology of Fujian Province of China under contract Nos 2003N026 and 2004SZ01 - 2.

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/dm^3） of water 15 cm deep inside the burrows were much lower than those （5.96 ～ 6.19 mg/dm^3） 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 gunadosomatic 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.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/dm^3） of water 15 cm deep inside the burrows were much lower than those （5.96 ～ 6.19 mg/dm^3） 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 gunadosomatic 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.

关 键 词：Boleophthalmus pectinirostris reproductive ecology burrow fish 

分 类 号：X145[环境科学与工程—环境科学]