机构地区:[1]上海海洋大学农业农村部鱼类营养和环境生态研究中心,上海201306 [2]江苏海洋大学海洋与水产学院,连云港222005 [3]浙江省海洋水产研究所,舟山316021 [4]上海海洋大学上海水产养殖工程技术研究中心,上海201306 [5]上海海洋大学水产科学国家级实验教学示范中心,上海201306
出 处:《水生生物学报》2023年第5期713-722,共10页Acta Hydrobiologica Sinica
基 金:国家重点研发计划“蓝色粮仓科技创新”专项(2018YFD0900103);江苏省科技厅苏北科技专项(SZ-LYG202029);江苏省农业重大技术协同推广计划试点项目(2019-SJ-009-5)资助。
摘 要:实验研究了三疣梭子蟹(Portunus trituberculatus)卵巢发育过程中(Ⅰ—V期)组织色泽、类胡萝卜素组成与含量、抗氧化和非特异性免疫指标的变化规律,进一步探讨了肝胰腺中类胡萝卜素含量变化与抗氧化指标的关系。结果表明:(1)卵巢发育期间,卵巢指数(GSI)显著增加(P<0.05),肝胰腺指数(HSI)整体呈先升后降的趋势;卵巢的红度(a^(*))值和黄度(b^(*))值、肝胰腺的亮度(L^(*))值和b^(*)值均呈显著上升趋势,但卵巢中L^(*)值呈下降趋势。(2)在卵巢发育过程中,卵巢中的总类胡萝卜素、虾青素、叶黄素和β-胡萝卜素含量均为先升后降的趋势,虾青素含量在Ⅳ期最高;肝胰腺中的虾青素含量呈上升趋势,而β-胡萝卜素含量为显著下降趋势;内表皮中的总类胡萝卜素、虾青素、叶黄素、海胆烯酮和β-胡萝卜素含量均呈现下降趋势;就不同组织中类胡萝卜素含量而言,内表皮中虾青素含量最高。卵巢和肝胰腺的L^(*)值与总类胡萝卜素含量呈显著负相关,卵巢的a^(*)值和b^(*)值均与总类胡萝卜素、虾青素、叶黄素、海胆烯酮和β-胡萝卜素含量呈显著正相关。肝胰腺的a^(*)值与各类胡萝卜素含量无显著相关性,b^(*)值仅与虾青素含量呈显著正相关。(3)肝胰腺中Ⅰ—V期T-AOC呈显著下降趋势(P<0.05),而SOD、CAT和GPX均为“先上升后下降”趋势;血淋巴中T-AOC呈现“高-低-高-低”的变化趋势,而SOD和GPX为“先上升后下降”趋势,CAT和MDA为“低-高-低-高”的变化趋势;卵巢发育过程中肝胰腺中ACP、ALP和NO整体呈下降趋势,而血淋巴中ACP、ALP和Hc在Ⅰ—Ⅳ期为上升趋势,V期略有下降。(4)相关性分析表明,肝胰腺中虾青素含量与T-AOC呈显著负相关,叶黄素含量与GPX呈显著正相关(P<0.01),其余类胡萝卜素含量与抗氧化指标均无显著相关性。综上,在三疣梭子蟹卵巢发育过程中,卵巢中总类胡萝卜素、虾青素和β-胡萝卜Female Portunus trituberculatus at different stages of ovarian development(stageⅠ—Ⅴ)were investigated for their color,carotenoids contents,antioxidant and non-specific immune parameters.The results indicated that:(1)the gonadosomatic index(GSI)increased significantly(P<0.05),while the hepatosomatic index(HSI)rose slightly,then declined gradually.The redness(a^(*))and yellowness(b^(*))values in ovaries showed an increasing trend,as did lightness(L^(*))and b^(*)values in hepatopancreas,but L^(*)values in ovaries showed a decreasing trend.(2)Total carotenoids,astaxanthin,zeaxanthin andβ-carotene content in ovaries showed an increasing trend followed by a decreasing trend,with the highest astaxanthin content in stage IV.Astaxanthin content in hepatopancreas was on the rise,whileβ-carotene was on a significant decline.Regarding the content of carotenoids in different tissues,the epithelium contained the highest amount of astaxanthin.L^(*)values in the ovary and hepatopancreas exhibited a significant negative correlation with total carotenoids,and a^(*)and b^(*)values in the ovary both showed a significant positive correlation with total carotenoids,astaxanthin,luteolin,echinenone andβ-carotene.There was no significant correlation between a^(*)values and various carotenoids in hepatopancreas,and b^(*)values only showed a significant positive correlation with astaxanthin.(3)For antioxidant indexes,T-AOC in hepatopancreas showed a significant decrease in stageⅠ—Ⅴ(P<0.05),while SOD,CAT and GPX showed an“increasing and then decreasing”trend.The T-AOC in hemolymph showed a trend of“high-low-high-low”.SOD and GPX showed an increasing trend and then decreasing trend,while CAT and MDA showed a“low-high-low-high”trend.In terms of immune indexes,ACP,ALP and NO in the hepatopancreas showed an overall decreasing trend during ovarian development,while ACP,ALP and Hc in the hemolymph showed an increasing trend in stageⅠ—Ⅳand a slight decrease in stageⅤ.(4)Correlation analysis showed that astaxanthi
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