近年来天津地区大口黑鲈产业的迅速发展给淡水养殖业带来了新的生机和活力,养殖规模也逐年加大.通过收集相关资料和实地调研,运用SWOT分析方法和德尔菲法得出天津地区大口黑鲈产业发展宜选择多种经营型战略,提出增强大口黑鲈产业链的自主性和可控性、提升大口黑鲈产品竞争力、研发环保节约型的水产养殖工艺等建议.

"福瑞鲤2号"的原始亲本为建鲤、黄河鲤和黑龙江野鲤,育种策略是通过完全双列杂交建立自交、正反交家系构成选育基础群体,以生长性状和成活率作为主要指标,采用数量遗传学BLUP(最佳线性无偏预测)分析,结合家系选育的综合选育技术,连续5代选育[1]."福瑞鲤2号"体形为深受养殖户和消费者喜爱的长体形,体长/体高为3.63,适宜在全国各地人工可控的淡水水体中养殖[2].

According to the studies on gonad development and investigation into practice about reproduction of yellow catfish (Pelteobagrus fulvidraco), there was a long breeding period of yellow catfish in the same year, which can be used to induce spawning artificially. In view of the production practices, two periods of late April to early June and mid－August to early September were set for mass cases to induce spawning. Comparative efficacy between the two periods on induced spawning were investigated in this study and the results showed that the egg production, rate of ovulation and level of fertilization were lower, less hormone and shorter time to spawn were required during the later period. The aim of the catfish propagation in the later period was to provide bigger size fry for culture purposes, with a great of production significance.