A Classification of Hypersaline Waters, Based on Trophic Criteria

Abstract. A classification of hypersaline waters is proposed on the basis of the food chain structure of their biota. Four steps of increasing salinity and respective shortening of the food-chains are recognized, respectively named: alpha-, beta-, gamma- and delta-hypersaline waters.
Some general aspects, dealing with cosmopolitism of the biota, production, competition and benthic ecology in hypersaline waters are discussed.
The relevance of ecological studies in hypersaline waters to theoretical ecology and to the new technological uses of saline waters is briefly mentioned.     

Industrial aquaculture and the politics of resignation

While neoliberalism is often framed as a withdrawal of the state, many scholars have noted that what is occurring is not so much a withdrawal, as a repositioning. Although many social services and regulatory functions once provided by government agencies have indeed been eroded, there has been a simultaneous channeling of new resources into other arenas, in an effort to create conditions in which private corporations can operate more profitably. This, however, often places the state in a contradictory position, simultaneously serving as regulator, investor, and development advocate for the private sector. This can become especially problematic in moments of ecological crisis when decisive and unbiased responses are needed. This paper explores these dynamics through an examination of the cycles of growth and crisis that have characterized the aquaculture industry on the south coast of Newfoundland since the late 1970s as well as the ongoing attempts by aquaculture advocates to characterize industrial-scale fish farming as a sustainable industry, despite evidence to the contrary.     

新疆盐湖卤虫的分布特征及成矿作用

卤虫是一种生存于盐湖卤水和盐田水中的超盐水生物，具有很高的利用价值，主要用于水产养殖业和家禽喂养，是一种待开发的盐湖资源。研究表明，盐湖卤水中卤虫的大量存在，能够起到净化卤水的作用，并使盐类沉积的纯度增高，同时对盐类沉积速度也起到了重要作用。卤虫卵和卤虫粪粒是盐湖沉积物中极常见的物质成分，并在盐类矿层中发现它们的化石，表明卤虫在盐湖成矿过程中起到了不容忽视的作用。     

孤雌生殖卤虫多倍体IDH同工酶基因的表达特征

孤雌生殖卤虫(Anemia parthenogenetica)广泛分布于沿海盐田和内陆盐湖中,其种群中多倍体所占比例较高.王壬学等[1]观察到天津黄驿产卤虫种群中有17.7%的五倍体个体,而山东羊口盐场五倍体个体高达22%.     

卤虫(Artemia salina)卵孵化条件、网箱孵化和幼体收集时机的研究

本文研究了温度、盐度、pH和光刺激对卤虫卵孵化的影响,提出了本品系卤卵大量孵化的最适孵化温度、盐度和pH控制范围,并就孵化时对卤虫卵进 行室内自然光刺激持续的时间和阶段进行了试验,发现光刺激也可在孵化前进行。本试验首次应用23cm×23cm×40cm的网箱进行卤虫卵的孵化,其效果比相同水体的水泥池约提高一倍。本文还从无节幼体的活力、孵化水质的变化和孵化高蜂期等方面,探讨了卤虫卵大量孵化时无节幼体的收集最有利时机。     

西藏拉果错卤虫：2营养成分

卤虫包括成体,无节幼体和卤虫卵,蛋白质,氨基酸,脂肪酶等营养成分的含量是评价卤虫质量的主要标准,因为摄食动物饵粒效果取决于氨基酸,脂肪酸的组成与含量,西藏拉果错卤虫的营养成分含量较高,１９９６、１９９７年盐湖研究中心连续取样测定,其蛋白质含量成本接近２０％,无节幼体约５５％,脱壳卵近５０％;粗脂肪成体３％,无节幼 和脱壳超过８７％,三种高级不饱和脂肪酸（２０：３,２０：４,２０：５）ＨＵＦＡ含量。