scholarly journals Behavior surveillance and oxygen consumption in the freshwater fish Labeo rohita (Hamilton) exposed to sodium cyanide

2010 ◽  
Vol 26 (1-2) ◽  
pp. 91-103 ◽  
Author(s):  
P.N. Dube ◽  
B.B. Hosetti
Keyword(s):  
Oxygen Consumption ◽  
Freshwater Fish ◽  
Labeo Rohita ◽  
Test Chamber ◽  
Sublethal Concentration ◽  
Sodium Cyanide ◽  
Toxicity Tests ◽  
Lc50 Value ◽  
Toxic Pollutant ◽  
Sublethal Concentrations

Sodium cyanide, is highly contaminating aquatic ecosystems as a toxic pollutant, was investigated in the present study for acute toxicity on freshwater fish Labeo rohita. The toxicity tests were conducted by static renewal bioassay method on the juveniles of fish was evaluated. The LC50 value of sodium cyanide to Labeo rohita was found out to be 320 ?g l-1. One third (106 ?g l-1) and one fifth (64 ?g l-1) of the LC50 value was selected for sublethal studies. Behavioural patterns and oxygen consumption were observed in both (1/3rd and 1/5th) sublethal concentrations (1, 5, 10 and 15 days). Sodium cyanide is highly toxic to the animal tested. Fish behaved irregular, erratic, and dartic movements, by followed hyperexcitability, loss of balance, finally settles to the bottom of the test chamber. A decrease in oxygen consumption was observed in 1/3rd (11.62% and -4.52%) and 1/5th (9.11% and -2.82%) sublethal concentrations. Fish under sublethal concentration were found to be under stress but not fatal.

scholarly journals Acute toxicity of metal cyanides to Indian major carp Labeo rohita (Hamilton)

2010 ◽  
Vol 26 (3-4) ◽  
pp. 267-277
Author(s):  
B.B. Hosetti ◽  
P.N. Dube ◽  
M.S. Prashanth ◽  
A. Shwetha
Keyword(s):  
Acute Toxicity ◽  
Labeo Rohita ◽  
Test Chamber ◽  
Sodium Cyanide ◽  
Indian Major Carp ◽  
Vertical Movements ◽  
Metal Cyanide ◽  
Lc50 Value ◽  
Metal Cyanides ◽  
Cyanide Complexes

Static renewal bioassay tests were carried out to determine the acute toxicity (LC50) of metal cyanides to the Indian major carp Labeo rohita. The 96 hour LC50 value for the sodium cyanide, zinc cyanide and copper cyanide to the fish L. rohita were 0.32 mg/L 0.35 mg/L, and 1.1 mg/L respectively. Among the metal cyanide tested, sodium cyanide is found to be more toxic than the other cyanide complexes. In general behavioral responses of the fishes exposed to cyanide included uncontrolled swimming, erratic movements, loss of balance, moving spiral fashion with sudden jerky movements, vertical movements lying on the sides of the test chamber and rapid flapping of the opercular movements with opened mouth finally settles to the bottom.

scholarly journals STUDIES ON THE IMPACT OF A MALATHION INSECTICIDE ON CERTAIN BIOCHEMICAL CONSTITUENTS OF A FRESHWATER FISH, LABEO ROHITA

2018 ◽  
Vol 5 (1) ◽  
pp. 93-96
Author(s):  
Anusiya Devi K ◽  
Lekeshmanaswamy M
Keyword(s):  
Freshwater Fish ◽  
Labeo Rohita ◽  
Aquatic Organisms ◽  
Toxicity Evaluation ◽  
Biochemical Characteristics ◽  
Biochemical Constituents ◽  
Lc50 Value ◽  
The Impact ◽  
Sublethal Concentrations ◽  
Body Lice

Malathion is an insecticide which is commonly used for the agricultural and non-agricultural purposes in India. Malathion is found effective for controlling mosquitoes, flies, household insects, animal parasites (ectoparasites) and head & body lice. The effect of insecticide Malathion is found to be highly toxiceven to the non-targeted aquatic organisms including fish. The aim of the study, was to determine the effect of insecticide malathion on some biochemical characteristics (protein, carbohydrate and cholesterol in gill, liver, muscle and kidney) of the fish, Labeo rohita. Toxicity evaluation tests were conducted to determine LC50 values. The 1/10th of 96 hrs, LC50 value was selected as sublethal concentrations (0.5 ppm). All biochemical's parameters were found to be decreased in all tissues on comparison with control. The results indicated the toxic nature of the insecticide malathion.

scholarly journals UJI TOKSISITAS SODIUM SIANIDA (NaCN) PADA BEBERAPA SPESIES IKAN AIR TAWAR: REVIEW (The Toxicity Test of Sodium Cyanide (NaCN) to Some Species of Freshwater Fish: A Review)

2020 ◽  
Vol 25 (1) ◽  
pp. 1
Author(s):  
Siti Muyassaroh ◽  
Indah Rahmatiah Siti Salami
Keyword(s):  
Carboxylic Acid ◽  
Freshwater Fish ◽  
Enzyme System ◽  
Labeo Rohita ◽  
Aquatic Organisms ◽  
Sodium Cyanide ◽  
Histopathological Changes ◽  
Free Medium ◽  
Fish Kills ◽  
Cyanide Toxicity

AbstrakSianida telah digunakan sebagai senyawa toksik selama beberapa dekade untuk penangkapan ikan. Pengetahuan para nelayan yang rendah dapat menyebabkan kelebihan dosis penggunaan senyawa sianida. Hal ini dapat menyebabkan kematian ikan dan bahkan kerusakan terumbu karang. Sodium sianida tidak bersifat bioakumulasi dan biomagnifikasi berdasarkan nilai Kow-nya dan sebagian besar metabolit dikeluarkan melalui urin dalam bentuk thiosianat, SCN- (60-80%), 2-aminothiazoline-4-carboxylic acid (ATCA) atau 2-iminothiazolidine-4-carboxylic acid, ITCA (15%), serta gas HCN dan CO2. Biomarker organisme yang terpapar sianida yaitu kandungan CN-, SCN-,ATCA atau ITCA pada urin dan darah; perubahan histopatologis di limpa, hepato-renal dan ginjal; penurunan aktivitas enzim katalase pada jaringan hati, insang, otak, dan otot ikan; perubahan aktivitas laktat dehydrogenase (LDH) dan suksinat dehydrogenase (SDH), tingkah laku, laju respirasi, dan metabolit (asam piruvat dan asam laktat). Akan tetapi, aktivitas enzim dan struktur histopatologis kembali normal setelah pemulihan selama 14 hari di medium bebas NaCN. Paparan NaCN juga dapat menyebabkan perubahan kecepatan renang dan durasi surfacing behavior. Konsentrasi sianida di lingkungan tidak bisa diabaikan, sebab dimungkinkan adanya efek sinergis dan juga penghambatan sistem enzim katalase, yang pada akhirnya terjadi kerentanan organisme akuatik terhadap toksisitas sianida. Labeo rohita merupakan spesies ikan air tawar yang paling sensitif terhadap paparan NaCN, dengan nilai LC50 sebesar 0,32 mg/L (tanpa melihat jenis aliran yang digunakan).AbstractCyanide has been used as a toxic compound for decades for fishing. Lack of knowledge of fishermen can lead to overdosing use of a compound. This can lead to fish kills and even damage the coral reefs. Sodium cyanide is not bioaccumulative and biomagnificative based on the value of Kow and most metabolites are excreted in the urine in the form of SCN- (60-80%), 2-aminothiazoline-4-carboxylic acid, ATCA or 2-iminothiazolidine-4-carboxylic acid, ITCA (15%), as well as HCN gas and CO2. Biomarkers organisms are exposed cyanide content of CN-, SCN-, ATCA or ITCA on urine and blood; histopathological changes in spleen, hepato-renal and kidney; decreased activity of catalase enzyme in the liver, gills, brain, and muscles of fish; lactate dehydrogenase (LDH) and succinate dehydrogenase (SDH) activity changes, behavioral, respiratory rate, and metabolites (pyruvic acid and lactic acid). However, the enzyme activity and histopathological structure back to normal after recovery for 14 days at NaCN-free medium. NaCN exposure can also cause changes in swimming speed and duration of surfacing behavior. The concentration of cyanide in the environment can not be ignored, because it is possible the existence of a synergistic effect and also the inhibition of catalase enzyme system, which eventually happened vulnerability of aquatic organisms to cyanide toxicity. Labeo rohita is a freshwater fish species are most sensitive to exposure to NaCN, with LC50 values of 0.32 mg / L (regardless of the type of flow used).

scholarly journals Antagonistic Effects of Sublethal Concentrations of Certain Mixtures of Metal Oxide Nanoparticles and the Bulk (Al2O3, CuO, and SiO2) on Gill Histology in Clarias gariepinus

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Amaeze Henry Nnamdi ◽  
Tam-Miette Dawarri Briggs ◽  
Oluwaseun Olusola Togunde ◽  
Henry Ebele Obanya
Keyword(s):  
Metal Oxide ◽  
Metal Oxide Nanoparticles ◽  
Clarias Gariepinus ◽  
Sublethal Concentration ◽  
Toxicity Tests ◽  
Gill Lamella ◽  
Oxide Nanoparticles ◽  
High Frequencies ◽  
Metallic Oxides ◽  
Sublethal Concentrations

Background. The effect of nanoparticles (NPs) on aquatic environments is poorly studied. Aim. This study evaluates the toxicity of joint effects of these different metal nanoparticles and their bulk in mixtures (Al2O3, CuO, and SiO2) on fish using histological biomarker. Materials and Methods. The bulk and nano sizes of three salts (Al2O3, CuO, and SiO2) were used. Nanosizes ranged from 25 nm to 100 nm. The juvenile fishes of Clarias gariepinus (mean Length: 12.3 ± 3.5 cm; mean weight: 18.52 ± 6.41 g) were used for the acute and chronic toxicity tests. They were exposed to 7 mg/L each of the bulk and nano sizes of the three metallic oxides either singly or in mixtures for 28 days. The basis for the sublethal concentration was that the 96 hr acute toxicity of the varied sizes of the three metallic oxides was nontoxic up to the concentrations of 100 mg/L with no significant mortality at the highest exposure concentrations. The gills were collected for histopathology. Results. Of the three metal oxide nanoparticles, SiO was the most toxic, with histopathological alteration index (HAI) of 20.0, followed by nano-CuO (HAI, 10.0) and nano-Al2O3 (HAI, 2.0). In single exposure, the gill alterations include high frequencies of erosion of gill lamella (EGL), hypertrophy (HPT), oedema (OD), and necrosis (N). Less damage was observed at the combination of the metal oxide nanoparticles of SiO + Al2O3, SiO + CuO and SiO + Al2O3 + CuO in equal (1 : 1—HAI, 2 and 6; 1 : 1 : 1—HAI, 6) and unequal ratios (1 : 2—HAI, 16 and 6; 2 : 1—HAI, 8 and 6). Similarly, all bulk combinations were also antagonistic except for the equal ratio of bulk CuO (HAI, 20) and bulk Al2O3 (HAI, 10) that gave additive effect with HAI of 32. Conclusion. The joint actions of nano Al2O3 and CuO with SiO produced a low toxic effect, unlike the high toxicity of their single trials; this also indicates that nano Al2O3 and CuO are antagonists. Similarly, among the bulk metal oxides (SiO, Al2O3, and CuO), CuO was the most toxic. Bulk SiO and Al2O3 are antagonistic on the effects of CuO on the fish gill. There is need to properly document the ecological implications of nanoparticles in the aquatic environment.

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