نتایج جستجو برای: fish yield
تعداد نتایج: 296754 فیلتر نتایج به سال:
چکیده: مول هیداتیفورم یک حاملگی غیر طبیعی انسانی است که طبق ویژگی های هیستولوژیک، ژنتیک، سونوگرافی و کلینیکی به صورت مول هیداتیفورم کامل (chm) و مول هیداتیفورم ناقص (phm) دسته بندی می شود. تمایز قایل شدن بین chm و phm با استفاده از نشانه های هیستولوژیک به تنهایی مشکل است، مول کامل رایج ترین فرم برای تبدیل شدن به کوریوکارسینوما می باشد و مول هتروزیگوت این استعداد را افزایش می دهد. ژن nlrp7 با م...
This study was carried out in Turkmen fishing station to examine suitable mesh size of gill nets for Persian sturgeon, Acipenser persicus, to decrease possibility of catching immature specimens and increase catch likelihood for larger fish. The Holt model was used to determine suitable length for catch and selection of mature Persian sturgeon females. Following preliminary studies some 920 expe...
Historically, the oceans were considered limitless and thought to harbour enough fish to feed an ever-increasing human population. However, the demands of a growing population, particularly in poorer countries, now far outstrip the sustainable yield of the seas. At the same time as fishing has become more industrialised, and wild fish stocks increasingly depleted, aquaculture production—fish an...
AIM An often-invoked benefit of high biodiversity is the provision of ecosystem services. However, evidence for this is largely based on data from small-scale experimental studies of relationships between biodiversity and ecosystem function that may have little relevance to real-world systems. Here, large-scale biodiversity datasets are used to test the relationship between the yield of inland ...
Aquaculture production relies on the quality of feed and a balanced diet helps to maximize fish yield profitability. Plant based supplements in aquaculture are ideal as growth promoters immunostimulants. The present study assessed effect medicinal plant, Acalypha indica leaf feeding energetics freshwater fish, Labeo rohita. Incorporation different concentrations supplemented enhanced assimilati...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید