CAJ | 학술논문

作者采用中国渤海湾盐田固有的渤海湾孤雌生殖卤虫(Bohai Bay Artemia parthenogenetica, BHB)和分别源自美国旧金山湾盐田(SFB)与越南 Vinh Chau 人工养殖(VSFB)的两性生殖卤虫(A. fran-ciscana),研究盐度(分别为70,125和180)对上述品系卤虫存活和生殖力的影响。结果表明,在实验盐度范围内,所有品系卤虫存活率随盐度升高而显著降低,但与BHB卤虫相比, SFB和VSFB卤虫对高盐度的耐受力较强。盐度显著影响 BHB 卤虫性成熟时间和产后代间隔时间,并随盐度的升高而延长,但对SFB和VSFB卤虫没有显著影响。所有品系卤虫每窝产幼体或产卵数量均随盐度升高而有降低的趋势。较低盐度(70)下, BHB卤虫以产幼体占绝对优势, VSFB产幼体较多, SFB产卵较多；而在较高盐度(125和180)下, VSFB以产幼体占绝对优势, SFB和BHB也以产幼体居多。总之,与SFB和BHB相比, VSFB在高盐环境下存活率较高,且以产幼体占绝对优势,表明VSFB卤虫更适应于高盐盐田环境,有利于该品系卤虫在盐场建立优势种群。
작자채용중국발해만염전고유적발해만고자생식서충(Bohai Bay Artemia parthenogenetica, BHB)화분별원자미국구금산만염전(SFB)여월남 Vinh Chau 인공양식(VSFB)적량성생식서충(A. fran-ciscana),연구염도(분별위70,125화180)대상술품계서충존활화생식력적영향。결과표명,재실험염도범위내,소유품계서충존활솔수염도승고이현저강저,단여BHB서충상비, SFB화VSFB서충대고염도적내수력교강。염도현저영향 BHB 서충성성숙시간화산후대간격시간,병수염도적승고이연장,단대SFB화VSFB서충몰유현저영향。소유품계서충매와산유체혹산란수량균수염도승고이유강저적추세。교저염도(70)하, BHB서충이산유체점절대우세, VSFB산유체교다, SFB산란교다；이재교고염도(125화180)하, VSFB이산유체점절대우세, SFB화BHB야이산유체거다。총지,여SFB화BHB상비, VSFB재고염배경하존활솔교고,차이산유체점절대우세,표명VSFB서충경괄응우고염염전배경,유리우해품계서충재염장건립우세충군。
This paper investigated the effect of salinity (70, 125 and 180, respectively) on survival and reproductive performance of autochthonous Artemia parthenogenetica from Bohai Bay saltworks, China (BHB) and A. franciscana obtained from the saltponds of San Francisco Bay, USA (SFB) and artificially-produced from Vinh Chau, Vietnam (VSFB). The results indicated that, within the experimental salinity range, the survival rate of all tested Artemia strains declined significantly as salinity rising. The SFB and VSFB had a better tolerance to higher salinity than BHB. Higher salinity resulted in significantly longer maturation period and brood interval for BHB, while no significant effect was observed on SFB and VSFB. The nauplii and cysts yield per brood of all tested strains tended to reduce along with salinity increasing. At lower salinity (70), BHB dominantly produced nauplii, VSFB produced more nauplii than cysts, and SFB produced more cysts than nauplii. In contrast, at higher salinity (125 and 180), VSFB dominantly produced nauplii, and SFB and BHB produced more nauplii than cysts. In con-clusion, our data provided evidence that VSFB had a better survival rate and dominant ovoviviparous reproduction at higher salinity compared to local BHB and SFB,, and thus are more adapted to the environmental conditions in salt ponds and may be a more effective colonizer in saltworks.