Residues of oxytetracycline in wild fish and sediments from fish farms

Björklund, Harry; Bondestam, Johan; Bylund, Göran

doi:10.1016/0044-8486(90)90324-g

Cited by 154 publications

(71 citation statements)

References 8 publications

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“…A high incidence of bacteria resistant to the antimicrobials used in aquaculture, including multiply resistant bacteria, has been found in fish farms and the surrounding aquatic environments (11,16,24,(30)(31)(32)34). Furthermore, residues of antimicrobials have been found in the sediments of marine fish farms (7,17). Overfeeding and water currents around marine fish farms, particularly on the seafloor, have been shown to significantly influence the buildup of antimicrobials in sediment (10).…”

mentioning

confidence: 99%

Impact of Integrated Fish Farming on Antimicrobial Resistance in a Pond Environment

Petersen

Andersen²,

Kaewmak

et al. 2002

Appl Environ Microbiol

183

110

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Integrated fish farming combines livestock production with fish farming. Animal manure is shed directly into a fish pond as fertilizer and supports the growth of photosynthetic organisms. The livestock, mainly chickens and pigs, is often fed feed containing growth promoters. In this study we investigated the impact of integrated fish farming on the levels of antimicrobial-resistant bacteria in a pond environment. One integrated broiler chicken-fish farm was studied for 2 months immediately after the start of a new fish production cycle. A significant increase over time in the resistance to six different antimicrobials was found for the indicator organism Acinetobacter spp. isolated from composite water-sediment samples. The initial resistance levels prior to the new production cycle were 1 to 5%. After 2 months the levels of resistance to oxytetracycline and sulfamethoxazole reached 100%, and the levels of resistance to ciprofloxacin were more than 80%. The long-term effects of resistance on integrated farming were studied on seven additional farms. The resistance levels were particularly high among Enterococcus spp. and were also high among Acinetobacter spp. isolated from water-sediment samples compared to the resistance levels at four control farms. In conclusion, integrated fish farming seems to favor antimicrobial-resistant bacteria in the pond environment. This could be attributed to the selective pressure of antimicrobials in the pond environment and/or to the introduction of antimicrobialresistant bacteria from animal manure. Potential risks to human health were not addressed in this study and remain to be elucidated.

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mentioning

confidence: 99%

Impact of Integrated Fish Farming on Antimicrobial Resistance in a Pond Environment

Petersen

Andersen²,

Kaewmak

et al. 2002

Appl Environ Microbiol

183

110

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“…The organic fish farming is a holistic management system (HMS). HMS enhances agroecosystem health including biodiversity, biological cycle and soil biological activity (Bjorklund et al 1990). Organic fish production system is socially, ecologically and economically sustainable.…”

Section: Discussionmentioning

confidence: 99%

Production of organic grass carp (Ctenopharyngodon idella) and GIFT tilapia (Oreochromis niloticus) using napier grass, Pennisetum purpureum

Shaha¹,

Kundu²,

Hasan³

2015

J. Fish.

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This study was conducted to examine the growth and production of grass carp and tilapia cultured organically using napier grass in Bangabanbhu Sheikh Mujibur Rahman Agricultural University, Bangladesh from MarchJune, 2013. Three stocking ratios were tested: grass carp at 0.6 fish/m 2 with GIFT tilapia at 0.3 fish/m 2 (T 1 ), grass carp at 0.6 fish/m 2 with GIFT tilapia at 0.6 fish/m 2 (T 2 ), grass carp at 0.6 fish/m 2 with GIFT tilapia at 0.9 fish/m 2 (T 3 ) and grass carp only at 0.6 fish/m 2 as control (T 4 ). Chopped fresh napier grass leaf was the sole nutrient input and provided twice daily. The water quality parameters were within suitable ranges for fish culture. Grass carp attained a daily growth increment ranging from 2.80-3.73 g/day and GIFT tilapia from 1.30-1.86 g/day. The combined yields was significantly higher (P<0.05) in stocking ratio of 1:1 (2.72 t/ha / 90 days) compared to other stocking ratios. The result indicates on the basis of benefit-cost-ratio that the farmer's income will be around double or more in the combined production of organic grass carp and tilapia with stocking ratio of 1:1 than the other stocking ratios. The density of grass carp should be further studied.

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“…However this widespread use causes a negative impact on environmental degradation as well as on fish made applications. This constitute a major problem in aquaculture (Björklund et al 1991;Aoki 1992).…”

Section: Introductionmentioning

confidence: 99%

Histopathological Effects of Formaldehyde (CH2O) on Rainbow Trout (Oncorhynchus mykiss Walbaum, 1792)

BULUT¹,

Kubilay²,

BEKTAŞ³

et al. 2015

Journal of Limnology and Freshwater Fisheries Research

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Formaldehyde is commonly used as a disinfectant and also in a control of fish disease in aquaculture sector. However, this widespread use, can lead to environmental degradation and can cause negative effects on the treated fish with. In this study 250 mg/L (1 hour) and 500 mg/L (45 min) concentrations of formaldehyde were used. From the results of the histopathological findings degeneration was determined in the epithelial cells and pilar in the gill lamellae, lymphoid infiltration interlamellar necrosis and degeneration of the muscle tissue, dilatation in the liver, congestion in veins, degeneration in hepatocytes, damage in the blood vessels of fish which were treated with formaldehyde. In conclusion; formaldehyde was found to have a negative impact in histological examination in applied rainbow trout. Therefore, it was concluded that it should be used consciously and according the needs in aquaculture. Keywords Gökkuşağı Alabalıklarında (Oncorhynchus mykiss Walbaum, 1792) Formaldehit (CH2O)'in Histopatolojik EtkileriÖz: Formaldehit su ürünleri sektöründe balık hastalıklarının kontrolü ve dezenfektan olarak yaygın olarak kullanılmaktadır. Ancak, bu durum çeşitli çevresel olumsuzluklara sebep olabildiği gibi, uygulama yapılan balıklarda da olumsuz etkilere neden olabilmektedir. Bu çalışmada 250 mg/L (1 saat) ve 500 mg/L (45 dk) konsantrasyonlarında formaldehit uygulanmıştır. Çalışma sonucunda elde edilen histopatolojik bulgularda formaldehit uygulanan balıkların solungaç lamellalarda pilar ve epitel hücrelerinde dejenerasyon, interlamella alanlarda lenfoid ve mononükleer hücre infiltrasyonu ve nekroz, kas dokularında dejenerasyon, karaciğerlerinde genleşme, venalarında konjesyon, damarlarda hasar ve hepatositlerde dejenerasyon belirlenmiştir. Sonuç olarak formaldehit uygulamasının gökkuşağı alabalıklarında histolojik olarak olumsuz etkilere neden olduğu görülmüştür. Bu nedenle su ürünleri işletmelerinde bilinçli ve ihtiyaç dahilinde kullanılması gerektiği kanaatine varılmıştır.

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Residues of oxytetracycline in wild fish and sediments from fish farms

Cited by 154 publications

References 8 publications

Impact of Integrated Fish Farming on Antimicrobial Resistance in a Pond Environment

Impact of Integrated Fish Farming on Antimicrobial Resistance in a Pond Environment

Production of organic grass carp (Ctenopharyngodon idella) and GIFT tilapia (Oreochromis niloticus) using napier grass, Pennisetum purpureum

Histopathological Effects of Formaldehyde (CH2O) on Rainbow Trout (Oncorhynchus mykiss Walbaum, 1792)

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