Biochemical and Histopathological Effects of Glyphosate on Carp, Cyprinus carpio L.

Abstract

Glyphosate, also known by the trade names Roundup and Rodeo for agricultural use, is a broad-spectrum, translocated herbicide, used primarily in agricultural applications, and for vegetation control in non-crop areas. It is used as non-selective herbicide and for aquatic weed control in fish-ponds, lakes, canals, slow running water, etc. (USDA 1984). Glyphosate is perhaps the most important herbicide ever developed. Literature of toxicological and ecotoxicological properties of glyphosate is extremely sparse, considering its importance as herbicide. Generally, glyphosate is slightly toxic to mammals and fish, but it may have an impact on the aquatic environment and also on the other aquatic organisms (USDA 1984). Due to this, its toxicity investigation is very important. The study of sublethal effects is of special importance for toxicological evaluation of compound. The objective of this study was to investigate acute and subacute toxic effects of sublethal glyphosate concentrations in water to carp (Cyprinus carpio L.), one of the commercially most important fish species populating freshwaters of Yugoslavia.

Behavioural and Some Physiological Assessment of Glyphosate and Paraquat Toxicity to Juveniles of African Catfish, Clarias gariepinus

“…This herbicide due to the changes of metabolic, oxidative and haematological parameters, may alter the ecological balance causing damage to non-target organisms (Neškovic et al, 1996). Paraquat (1,1-dimethyl-4,4-bipyridininum ion) is one of the most common contact and non-selective herbicide for exterminating vegetative pests, is used for controlling terrestrial weeds and aquatic plants in different countries and its presence is reported in many water sources of the world (Filizadeh, 2002;Ye et al, 2002;Gao et al, 2010;Ismail et al, 2011).…”

Preliminary Study of Pesticide Drift into the Maya Mountain Protected Areas of Belize

“…Studies have shown that glyphosate exhibits low toxicity to fish and aquatic invertebrates (Folmar et al 1979; Giesy et al 2000; Neškovi et al 1996), but the effects of glyphosate vary widely based on formulation (Mann and Bidwell 1999; Tsui and Chu 2003). Although some preparations contain surfactants that significantly depress the LC50, requiring these products to be labeled as toxic to fish (EPA 1993), even these decreased toxic levels are in the 1.4–18 mg/kg range (LC50 24h ), and thus above the levels found in this study (Folmar et al 1979).…”

Can Land Managers Control Japanese Knotweed? Lessons from Control Tests in Belgium

“…Most glyphosate-containing products are either made or used with a surfactant, which help glyphosate penetrate plant cells. Glyphosate and the surfactants it is formulated with have been shown to have detrimental effects on many non-target organisms such as bacteria, protozoa, microalgae, crustaceans (Tsui and Chu 2003), earthworms (Casabé et al 2007), and fish (Folmar et al 1979;Nešković et al 1996). As such, it is forbidden in Belgium along rivers.…”