Ảnh hưởng của marshal 200SC đến cholinesterase và tăng trưởng cá mè vinh (Barbonymus gonionotus)
نویسندگان
چکیده
Marshal 200SC chứa carbosulfan 200g/L được sử dụng trong canh tác lúa ở Đồng bằng sông Cửu Long. Carbosulfan có cơ chế gây hại cho sinh vật qua ức cholinesterase (ChE). Cá mè vinh (Barbonymus gonionotus) sống nhiều thủy vực và nuôi xen mô hình - cá nên nguy tiếp xúc bị ảnh hưởng do thuốc này. Nghiên cứu này nhằm xác định nồng độ dưới ngưỡng chết của đến ChE tăng trưởng loài Ba Marshall (1, 10 20%LC50-96 giờ) triển khai điều kiện phòng thí nghiệm để đánh giá 96 giờ 60 ngày. Kết quả thấy độc cấp tính cao đối với cỡ giống, trị LC50-96 là 1,375 ppm (# 0,275 mg/L carbosulfan). Thông số não nhạy cảm hơn các thông trưởng. Ở 1%LC50-96 giờ, đã làm 18,4% hoạt ChE; khi FCR FI lần lượt 129,6% 116,7% chứng nhưng SGR giảm còn 74,5% chứng. ruộng cần khai.
منابع مشابه
Bilateral Filtering with Clusters by Expectation Maximization
Image restoration keeping sharp edges is achieved by bilateral filter. In this paper, an approach to improve edges for the filter is presented. The proposed algorithm relies on clustering by Expectation Maximization that produced clusters of intensive values. A stage is followed where standard deviation of Gaussian filters for scales of the spatial and intensity are adjusted by features of the ...
متن کاملComparing Different Criteria for Vietnamese Word Segmentation
Syntactically annotated corpora have become important resources for natural language processing due in part to the success of corpus-based methods. Since words are often considered as primitive units of language structures, the annotation of word segmentation forms the basis of these corpora. This is also an issue for the Vietnamese Treebank (VTB), which is the first and only publicly available...
متن کاملEffects of stocking densities on growth and survival of Thai Sharpunti (Barbonymus gonionotus) in earthen ponds
The present study was conducted over 4 months during 1 September to 30 December 2005 to observe the effects of stocking density on growth and survival of Thai Sharpunti, Barbodes gonionotus in 3 earthen ponds of size of 2.8 decimal each. The stocking densities of 80, 100 and 120 fish/decimal were treated as T1, T2 and T3, respectively. All the treatments were subjected to the same feeding regim...
متن کاملUse of low-cost chemotherapeutic and medicinal plants against Thai silver barb (Barbonymus gonionotus)
Studies were conducted to select and apply the effective low-cost chemotherapeutic and medicinal plants against diseased fish under laboratory and field condition. Thai silver barbs (Barbonymus gonionotus) weighing 20-25 gm were experimentally infected with a virulent bacterial pathogen (Aeromonas hydrophila) and a fungal pathogen (Aphanomyces invadans). Based on the previous studies, four chem...
متن کاملComparison of growth performance between cryopreserved and fresh sperm-originated fry of Barbonymus gonionotus
This experiment was conducted to compare the growth performance of silver barb fry produced from cryopreserved sperm with those produced from fresh sperm. Cryopreserved sperm used for fry production was preserved with three extenders, Alsever’s solution, urea egg-yolk, egg-yolk citrate solution and one cryoprotectant, DMSO. Cryodiluents were prepared by mixing the cryoprotectants at 10% concent...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: T?p chí Khoa h?c Tr??ng ??i h?c C?n Th?
سال: 2021
ISSN: ['1859-2333', '2815-5599']
DOI: https://doi.org/10.22144/ctu.jsi.2021.032