上海海洋大学学报2024，Vol.33Issue(3)：670-681,12.DOI:10.12024/jsou.20230904309
三倍体福建牡蛎生长、育肥与海洋环境因子的关系
Growth and fattening of triploid Crassostrea angulata and their relations with marine environmental factors
摘要
Abstract
In order to explore the key marine environmental factors affecting the growth and fattening of triploid Crassostrea angulata and promote the development of triploid oyster culture to the deep waters in the outside bay,a 10-month survey was conducted on the triploid C.angulata culture area in Huangqi Bay from December 2021 to September 2022.The growth indexes of oysters and marine environmental factors of the culture areas both outside and inside the bay were obtained,and the data were analyzed by Redundancy analysis(RDA)and other methods.The results showed that there were significant differences in growth indexes of oysters such as shell length,shell width,total mass,soft tissue mass,and fillet yields between the inner and outside bay groups,with all those indexes being significantly higher in the outside bay than those in the inner bay,while the difference of shell heights inside and outside bay was not significant.The contents of nitrate nitrogen,chlorophyll-a and phytoplankton cell density in the seawater in the outside bay were significantly higher than those in the inner bay,and there was no significant difference between other indexes inside and outside the bay.The results of RDA analysis showed that the main factors affecting the growth indexes of oysters were water temperature,nitrate nitrogen,phytoplankton cell density and chemical oxygen demand.What's more,phytoplankton cell density and chlorophyll-a content had the greatest effect on oyster fillet yield.Comprehensive analysis showed that water temperature,phytoplankton biomass and nutrients were the key marine environmental factors affecting the growth and fattening of triploid oysters.The average chlorophyll-a content in the sea area was above 6 μg/L for at least one month from spring to early summer,which was beneficial to the fattening of oysters.The selection of non-pollution source,good water exchange conditions,abundant food,rich nutrient supply,stable salinity and low wind waves in the outside bay to cultivate triploid oysters may be helpful to improve the yield and quality of oysters.关键词
三倍体福建牡蛎/生长/育肥/环境因子/冗余分析(RDA)Key words
triploid Crassostrea angulata/growth/fattening/environmental factors/Redundancy analysis(RDA)分类
农业科技引用本文复制引用
许翠娅,杨芳,郑盛华,祁剑飞,陈小红,魏姗姗,林永青,席英玉..三倍体福建牡蛎生长、育肥与海洋环境因子的关系[J].上海海洋大学学报,2024,33(3):670-681,12.基金项目
福建省海洋服务与渔业高质量发展专项(FJHY-YYBH-2022-3) （FJHY-YYBH-2022-3）
