长江水系野生和养殖中华绒螯蟹生殖性能、胚胎色泽和生化组成的比较
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1.上海海洋大学;2.浙江澳凌水产种业科技有限公司

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现代农业产业技术体系专项(CARS-48);上海市科技兴农推广项目[沪农科推字(2015)第1-7号];上海市科委工程技术中心能力提升项目(16DZ2281200);上海高校水产学高峰学科建设项目(2015-62-0908);深圳市澳华农牧有限公司横向项目(D-8006-15-0054)


Comparison of the reproductive performance, egg colour and biochemical composition between wild-caught and pond-reared Chinese mitten crab (Eriocheir sinensis) broodstock originated from Yangtze population
Author:
Affiliation:

1.Key laboratory of Freshwater Fisheries Genetic Resources, Ministry of Agriculture, Shanghai Ocean University,Ministry of Agriculture;2.Shanghai Ocean University

Fund Project:

The China Agricultural Research System-48 [grant number CARS-46]; the extension project [grant number 2015-1-7] from Shanghai Agriculture Committee; the Capacity Promotion Projects [grant number 16DZ2281200] of Shanghai Engineering and Technology Center from Shanghai Municipal Science and Technology Commission; the Shanghai Universities Top Disciplines Project [grant number 2015-62-0908] of Fisheries from Shanghai Municipal Education Committee and the Technology Commission and the R&D Project [grant number D-8006-15-0054] from Shenzhen Alpha Feed Co. Ltd.

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    摘要:

    生殖性能是评价水生动物亲本质量的重要指标,本研究测定和比较了野生和养殖中华绒螯蟹亲本的生殖性能、胚胎质量、胚胎色泽、常规生化和脂肪酸组成。结果显示:① 野生中华绒螯蟹亲本的生殖力、生殖指数和抱卵量略高于养殖亲本的,但2组间无显著性差异,野生和养殖中华绒螯蟹亲本的胚胎单卵湿重、单卵干重和卵径无显著性差异;② 养殖组冻干胚胎的红度 (a*)、黄度 (b*) 值和总类胡萝卜素含量显著高于野生组亲本,然而2组胚胎的亮度 (L*) 和色差值(dE*)无显著性差异;③ 2组亲本所产胚胎的水分、粗蛋白和粗脂肪含量均无显著性差异,但其脂肪酸组成差异显著,野生组胚胎的C18:1n9、C18:1n7、C20:4n6、C22:5n3和C22:6n3显著高于养殖组,但其C18:2n6和C18:3n3含量显著低于养殖组。研究表明,池塘养殖和野生亲本的生殖性能和胚胎中常规生化组成无显著差异,但2组胚胎的色泽、总类胡萝卜素含量和部分脂肪酸组成存在显著差异,该研究为中华绒螯蟹亲本选择、生殖性能评价和人工育苗提供了重要基础资料。

    Abstract:

    The Chinese mitten crab (Eriocheir sinensis) is an important aquaculture species and food source in Eastern Asia. At the present, pond-reared broodstock are used for seed production of E. sinensis, and the reasonable utilization of wild-caught broodstock is conducive breeding and selection of E. sinensis. Reproductive performance is one of the most important indicators for the evaluation of broodstock quality in aquatic animals. This study was designed to determine and compare the reproductive performance, egg quality, colouration, proximate and fatty acid composition of wild-caught and pond-reared E. sinensis broodstock. The results showed that: ①the wild-caught E. sinensis broodstock had the slightly higher egg production, fecundity and reproductive effort than the pond-reared females, but there was no significant difference between two treatments. The egg diameter, wet weight and dry weight of individual egg were similar between two treatments. ② The eggs from pond-reared E. sinensis broodstock had significantly higher redness (a*), yellowness (b*) and total carotenoids contents than those of the eggs produced by the wild-caught broodstock, however, there are no significant differences for lightness (L*) and colour difference (dE*). ③ As for proximate composition of eggs, no significant differences were found for the moisture, total protein and total lipid contents between the wild-caught and pond-reared treatments. The eggs from wild-caught broodstock had the significantly higher percentages of C18:1n9, C18:1n7, C20:4n6, C22:5n3 and C22:6n3 than the eggs produced by the pond-reared broodstock, but the C18:2n6 and C18:3n3 of the wild caught broodstock were significantly lower than those of the pond-reared broodstock. In conclusion, these results indicated that the reproductive performance and egg proximate composition were similar between wild-caught broodstock and pond-reared broodstock with similar body weight, but significant differences were found on redness (a*), yellowness (b*), total carotenoids content and fatty acid composition in the eggs. These results could provide valuable information for the broodstock selection, evaluation of reproductive performance and artificial breeding of E. sinensis in the future.

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李清清,吴旭干,姜晓东,苏雨,郑海地,成永旭.长江水系野生和养殖中华绒螯蟹生殖性能、胚胎色泽和生化组成的比较[J].水产学报,2019,43(4):858~866

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  • 收稿日期:2017-12-17
  • 最后修改日期:2018-04-18
  • 录用日期:2018-05-15
  • 在线发布日期: 2019-04-30
  • 出版日期: