The combined effect of Bassa 50EC and Vitashield 40EC on the brain acetylcholinesterase activity in climbing perch (Anabas testudineus)

Tâm, Nguyễn Thành; Berg, Håkan; Công, Nguyễn Văn

doi:10.1007/s11356-018-2112-1

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…As shown in this study and previous studies, the majority (73%) of the farmers in the An Giang and Dong Thap provinces said that the rice yield within high-dike systems had decreased during the last 5 years and almost all farmers agreed or strongly agreed that high-dikes decreased the soil fertility in the rice fields. The main reason for this was less nutrient-rich alluvium and more pests (including high amounts of rats and golden apple snails). ,, Almost all rice farmers (96.3–100%) said that they had increased their use of synthetic fertilizer with some 26.7–36.7% after the construction of high-dikes (Figure ), which is similar to the findings by refs ,,, . According to a study by ref , when rice farmers changed from two crops of rice with low-dikes to three crops of rice with high-dikes, the average amounts of fertilizer use increased by over 30%, and pesticide applications increased 3- to 4-fold.…”

Section: Resultssupporting

confidence: 74%

Farmers’ Perceived Impact of High-Dikes on Rice and Wild Fish Yields, Water Quality, and Use of Fertilizers in the Mekong Delta, Vietnam

Da,

Lan,

Labor

et al. 2024

ACS EST Water

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This study assesses farmers' perceived impact of high-dikes on rice and fish yields, use of synthetic fertilizers, water quality, fish diversity, and inflow of nutrient-rich water and sediments in the Mekong Delta. Interviews were conducted with 89 farmers from three districts in the An Giang province, of which 69−98% of the agricultural land is covered by high-dikes. Only 57% of the farmers felt that the rice yields had increased after the construction of high-dikes. 93% of respondents perceived that the inflow of nutrient-rich water and sediments had decreased, and 99% felt that the use of synthetic fertilizers had increased by 26−37% after the construction of high-dikes. 94% of all farmers felt that high-dikes had impacted on the aquatic environment and water quality, which was perceived to have decreased from good to poor quality. The wild fish yield and fish diversity were estimated to have decreased by 68−83 and 75−81%, respectively, and had decreased most in Cho Moi, followed by Phu Tan and Chau Phu districts. It is concluded that high-dikes have helped to increase rice yields in some areas, but at the expense of decreased natural fertilization, water quality, fish diversity and yields, which all impact on the farmers' profit and well-being.

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Section: Resultssupporting

confidence: 74%

Farmers’ Perceived Impact of High-Dikes on Rice and Wild Fish Yields, Water Quality, and Use of Fertilizers in the Mekong Delta, Vietnam

Da,

Lan,

Labor

et al. 2024

ACS EST Water

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Độc cấp tính và ảnh hưởng của Marshal 200sc lên hoạt tính cholinesterase và sinh trưởng cá rô phi (Oreochoromis niloticus)

Công¹,

Khuê²,

Giàu³

et al. 2019

CTU Journal

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The Effects of Fenobucarb on the Physiology, Behavior, and Growth of Silver Barb (Barbonymus gonionotus)

Nguyen,

Berg,

Nguyen

et al. 2024

Toxics

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This study assessed the effects of fenobucarb (F) (1%, 10%, and 20% of the LC50-96h value) on the brain cholinesterase (AChE) activity, food intake (FI), feed conversion rate (FCR), and growth of silver barb (Barbonymus gonionotus, Bleeker, 1849). It also assessed the AChE inhibition levels that cause the abnormal swimming, behavior, and mortality of silver barb and how the feeding regime affects the recovery rate of the AChE activity. The results showed that the brain AChE inhibition increased with the F concentrations. It peaked after nine hours, at 73.6% and 79.7% for the two highest concentrations, and then the AChE activity started to recover. After 96 h, the inhibition level was still 11.8% in the fish exposed to the two lowest concentrations and 30.5% in the fish exposed to the highest concentrations. Even when placed in clean water, the inhibition level in the fish that were exposed to the highest concentrations and only fed every third day was 32% after 14 days. Although there were no differences in the feed intake at any time, the fish exposed to F had a higher FCR and a lower specific growth rate and weight compared to the control fish at the later stages of the experiment. Thus, although the use of F in rice farming in the Mekong Delta may not lead to direct fish kills, it impacts the growth and health of the fish, which could have negative implications for wild fish populations and the long-term production of healthy fish in the Mekong Delta.

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The combined effect of Bassa 50EC and Vitashield 40EC on the brain acetylcholinesterase activity in climbing perch (Anabas testudineus)

Cited by 3 publications

References 47 publications

Farmers’ Perceived Impact of High-Dikes on Rice and Wild Fish Yields, Water Quality, and Use of Fertilizers in the Mekong Delta, Vietnam

Farmers’ Perceived Impact of High-Dikes on Rice and Wild Fish Yields, Water Quality, and Use of Fertilizers in the Mekong Delta, Vietnam

Độc cấp tính và ảnh hưởng của Marshal 200sc lên hoạt tính cholinesterase và sinh trưởng cá rô phi (Oreochoromis niloticus)

The Effects of Fenobucarb on the Physiology, Behavior, and Growth of Silver Barb (Barbonymus gonionotus)

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