نتایج جستجو برای: روتیفر brachionus calyciflorus
تعداد نتایج: 613 فیلتر نتایج به سال:
در سال های اخیر، استفاده از روتیفرها در پرورش مرحله لاروی ماهیان و همچنین در مطالعات سم شناسی محیطی به طور قابل توجهی افزایش یافته است. این تمایل زیاد، بواسطه نقش مهم روتیفرها در زنجیره غذایی، زمان نسل آوری کوتاه، کشت آسان، حساسیت نسبت به آلاینده های متداول، در دسترس بودن تخم های خفته به صورت تجاری و وجود پروتوکل های قابل اعتماد و استاندارد می باشد. در این تحقیق سطح پاسخ جمعیت روتیفر brachionus...
Abstract Brachionus calyciflorus is a recently described monogonont rotifer species complex that comprises four species. The observation of hybridisation between two these challenges this delimitation. mechanisms reproductive isolation essential to the maintenance integrity remain unclear. Here, we conducted upscaled experiments obtain large numbers hybrid and non‐hybrid dormant propagules. Thr...
The objective of the study was to determine the leachates toxicity from sewage sludge-amended soils (sandy and loamy). Samples originated from a plot experiment realized over a period of 29 months. Two types of soil were fertilized with sewage sludges at the dose of 3 % (90 t/ha). Soil samples were taken after 0, 7, 17, and 29 months from the application of sewage sludges. Leachates were obtain...
Abstract Brachionus calyciflorus is a species complex consisting of four recently described species. Although several lines evidence support their status, hybridization between two the sibling B. s.s. and elevatus has been inferred from both field laboratory studies. In this study, we tested for existence prezygotic barriers these by performing types cross-fertilization experiments. ‘mate compe...
1. It has been proposed that growth and reproduction of animals is frequently limited by multiple nutrients simultaneously. To improve our understanding of the consequences of multiple nutrient limitations (i .e. co-limitation) for the performance of animals, we conducted standardized popUlation growth experiments using an important aquatic consumer, the rotifer Brachionus calyciflorus. 2. We c...
As the primary consumers in aquatic organisms, zooplankton play an important role ecosystems. It is valuable for management and researchers to have insight into responses of community patterns environmental factors. In this study, RDA variation partitioning analysis were adopted determine factors affecting abundance biomass, as well relative importance different The findings reveal that TN (tot...
Salinity is an important variable influencing the density and diversity of rotifers. Studies on salt tolerance of rotifers have so far concentrated on euryhaline species while very little information is available on non-euryhaline taxa. In the present work, we have evaluated the combined effects of Chlorella vulgaris and sodium chloride on the population growth of two freshwater rotifers B. cal...
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