广海湾康氏小公鱼的产卵期及其鱼卵数量变动  

Spawning season and variation of the eggs of Stolephorus commersonii in Guanghaiwan Bay

作　　者：田丰歌[1] 郑琰晶[1] 肖瑜璋[1] 方宏达[1] 

机构地区：[1]国家海洋局南海环境监测中心,广东广州510300

出　　处：《应用海洋学学报》2017年第3期395-402,共8页Journal of Applied Oceanography

基　　金：国家海洋局南海分局海洋科学技术局长基金资助项目(1616)

摘　　要：根据2013~2015年在台山市广海湾海域(21°52'~21°56'N,112°46'~112°53'E)进行逐月调查的资料,分析了该水域康氏小公鱼(Stolephorus commersonii)鱼卵在一年中出现的时间、数量变动特征以及期间的海水温盐特征,并讨论了康氏小公鱼产卵期与水温变化的关系.结果表明,广海湾康氏小公鱼的产卵期开始于每年3月左右,结束时间在各年份不同,一般在9~11月之间.康氏小公鱼鱼卵在一年中分多个批次出现,一般可出现2~4个批次,其中第一批次为产卵盛期,数量高峰大约出现在4月前后.鱼卵出现期间平均水温的范围为19.8~31.3℃,平均盐度范围为7.66~33.65,从出现频次上看,其所在环境以高温低盐为主.康氏小公鱼产卵所需的最低温度在20℃左右,在产卵期开始前,海水温度何时升至此温度,决定了一年中康氏小公鱼鱼卵最早出现的时间.对比不同纬度的海域,康氏小公鱼产卵期的开始时间随纬度的升高而向后推迟.According to the monthly investigations conducted in Guanghaiwan Bay,Taishan City（ 21° 52’ ~21°56’N,112°46’ ~ 112°53’E） from 2013 to 2015,the occurrence and variation of the eggs of Stolephorus commersonii,with water temperature and salinity,were investigated and relations between the egg occurring time and water temperature were analyzed. It showed that the spawning season of Stolephorus commersonii started around March each year,but ended in months from September to November. The eggs of Stolephorus commersonii discontinuously occurred by batch in a year,which normally had 2 to 4 batches in total. The quantity of the first batch was the highest and it peaked around April. During this period,the water temperature ranged from 19. 8 to 31. 3℃,whereas the rage of salinity varied widely from 7. 66 to 33. 65. It showed that the eggs preferred to occur in water of higher temperature and low salinity. The lowest water temperature for the spawning of Stolephorus commersonii should be around 20℃. In the early spawning period when water temperature reached,the eggs of Stolephorus commersonii firstly occurred. By comparing the waters in different latitudes,the higher the latitude is,the later the eggs of Stolephorus commersonii appear.

关 键 词：海洋生物学 康氏小公鱼 鱼卵 产卵期 温度 盐度 广海湾 

分 类 号：P735[天文地球—海洋生物学]