南(nan)河古渡中華絨螯蟹“長江2號”培育基地

從江蘇(su)省淡(dan)水水產研究所(suo)河蟹定(ding)點育苗基(ji)地——射陽縣朱平種苗有限公司(si)引(yin)進(jin)，親本來自江蘇(su)省淡(dan)水水產研究所(suo)中華(hua)絨螯蟹“長江2號(hao)”保種基(ji)地核心(xin)種群。

中(zhong)(zhong)華絨(rong)(rong)螯(ao)蟹(xie)(xie)(xie)“長(chang)(chang)(chang)江(jiang)(jiang)2號”是江(jiang)(jiang)蘇省淡水水產(chan)(chan)研究(jiu)所(suo)選育的(de)新品種(zhong)(zhong)(zhong)。該(gai)品種(zhong)(zhong)(zhong)于2013年(nian)10月經全國水產(chan)(chan)原種(zhong)(zhong)(zhong)和良種(zhong)(zhong)(zhong)審定委員(yuan)會審定通(tong)過，品種(zhong)(zhong)(zhong)登記號：GS-01-004-2013。該(gai)品種(zhong)(zhong)(zhong)具(ju)有(you)純正長(chang)(chang)(chang)江(jiang)(jiang)水系中(zhong)(zhong)華絨(rong)(rong)螯(ao)蟹(xie)(xie)(xie)“青背、白肚、金(jin)爪、黃毛”的(de)典(dian)型特征。對(dui)比試驗表(biao)明，在相(xiang)同養殖(zhi)(zhi)(zhi)條件下，與未經選育的(de)長(chang)(chang)(chang)江(jiang)(jiang)水系中(zhong)(zhong)華絨(rong)(rong)螯(ao)蟹(xie)(xie)(xie)相(xiang)比，“長(chang)(chang)(chang)江(jiang)(jiang)2號”養成(cheng)期(qi)生(sheng)(sheng)長(chang)(chang)(chang)速(su)度提高約19.4%，平均個體規(gui)(gui)格(ge)增加(jia)約18.5%；成(cheng)蟹(xie)(xie)(xie)養殖(zhi)(zhi)(zhi)群體規(gui)(gui)格(ge)整齊，雌雄體重變異系數均小(xiao)于10%，遺傳(chuan)性(xing)狀穩定。中(zhong)(zhong)華絨(rong)(rong)螯(ao)蟹(xie)(xie)(xie)“長(chang)(chang)(chang)江(jiang)(jiang)2號”作為江(jiang)(jiang)蘇河蟹(xie)(xie)(xie)養殖(zhi)(zhi)(zhi)主推品種(zhong)(zhong)(zhong)之一，2014年(nian)生(sheng)(sheng)產(chan)(chan)大(da)眼幼體1.3萬(wan)千克(ke)，蟹(xie)(xie)(xie)種(zhong)(zhong)(zhong)養殖(zhi)(zhi)(zhi)面(mian)(mian)積達0.86萬(wan)畝(mu)，2015年(nian)推廣(guang)成(cheng)蟹(xie)(xie)(xie)養殖(zhi)(zhi)(zhi)面(mian)(mian)積達10.2萬(wan)畝(mu)。中(zhong)(zhong)試與推廣(guang)表(biao)明：中(zhong)(zhong)華絨(rong)(rong)螯(ao)蟹(xie)(xie)(xie)“長(chang)(chang)(chang)江(jiang)(jiang)2號”具(ju)有(you)生(sheng)(sheng)長(chang)(chang)(chang)速(su)度快、平均規(gui)(gui)格(ge)大(da)、成(cheng)蟹(xie)(xie)(xie)群體整齊，增產(chan)(chan)效果明顯，是具(ju)有(you)良好推廣(guang)養殖(zhi)(zhi)(zhi)前景的(de)優良河蟹(xie)(xie)(xie)品種(zhong)(zhong)(zhong)。該(gai)品種(zhong)(zhong)(zhong)適宜(yi)在我國長(chang)(chang)(chang)江(jiang)(jiang)流(liu)域人工(gong)可控的(de)淡水水體中(zhong)(zhong)養殖(zhi)(zhi)(zhi)。