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Acute toxicity of trichlorofon on four viviparous fish:poecilia latipinna,poecilia reticulata,Gambusia holbrooki and Xiphophorus helleri(Cyprinodontiformes:Poecilidae)

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Journal of Coastal Life Medicine 2014年第7期 511-514页

作者： Mohammad Forouhar Vajargah Aliakbar Hedayati Department of Fisheries Faculty of Fisheries and EnvironmentGorgan University of Agricultural Sciences and Natural ResourcesGorganIran

Objective:To determine toxicity and safety margins of trichlorofon in different species as trichlorofon toxicity has a large variation in the susceptibility of different ***:In this research,four viviparous aquarium fish were exposed to trichlorofon for 96 ***_(50)of 24 h,48 h,72 h and 96 h were attained by probit analysis software SPSS Version *** samples were exposed to different concentrations of trichlorofon(5,10,20 and 40 mg/L)for 96 h and mortality were recorded,***:The 96 h LC_(50)of poecilia latipinna,poecilia reticulata a,Gambusia holbrooki and Xiphophorus helleri were 9.80,9.80,9.95 and 7.99 mg/L,***:According to the results of this research,LC_(50)values indicated Xiphophorus helleri was the most resistant and Gambusia holbrooki,with a few differences,was the most sensitive species compared with the fishes examined.

关键词： Aquarium fish Toxicity Thriclorophon poecilia latipinna poecilia reticulata Gambusiaholbrooki Xiphophorus helleri

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鱼(poecilia reticulata)中铬和砷的累积

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四川环境 1984年第4期 60-63页

作者： J.Stary' K.Kratzer J.PraSilova T.Vrbska 谭莉四川大学化学系

Cr-51和As-74已用于研究鱼中不同形态的铬和砷的摄取与释放。已经发现,只有三甲基胂能够直接从水中被迅速摄取。鱼所消耗的食物中的三价铬的释放非常迅速,大约99.9％的铬在几天之内释放出来。乙酰丙酮铬(Ⅲ)(络合物)或乙二胺四乙酸铬(... 详细信息

Cr-51和As-74已用于研究鱼中不同形态的铬和砷的摄取与释放。已经发现,只有三甲基胂能够直接从水中被迅速摄取。鱼所消耗的食物中的三价铬的释放非常迅速,大约99.9％的铬在几天之内释放出来。乙酰丙酮铬(Ⅲ)(络合物)或乙二胺四乙酸铬(Ⅲ)(络合物)也同样如此。大约95％的砷酸、甲基胂酸、二甲基胂酸或二乙基二硫代氨基甲酸砷(Ⅲ)(络合物)

关键词：甲基砷酸二乙基 Cr 示踪食物三价铬 As 二烷基三甲基砷五价砷 poecilia reticulata 二硫代氨基甲酸

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Evaluations of larvicidal activity of medicinal plant extracts to Aedes aegypti （Diptera： Culicidae） and other effects on a non target fish

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Insect Science 2006年第3期13卷 179-188页

作者： SUWANNEE PROMSIRI AMARA NAKSATHIT MALEEYA KRUATRACHUE USAVADEE THAVARA The Biology Program Faculty of Science Rajabhat Songkhla University Songkhla province Department of Biology Faculty of ScienceMahidol university Bangkok National Institute of Health Department of Medical Science Ministry'of Public Health Nonthaburi province Thailand

A preliminary study was conducted to investigate the effects of the extracts of 112 medicinal plant species, collected from the southern part of Thailand, on Aedes aegypti. Studies on larvicidal properties of plant extracts against the fourth instar larvae revealed that extracts of 14 species showed evidence of larvicidal activity. Eight out of the 14 plant species showed 100% mosquito larvae mortality. The LC50 values were less than 100μg/mL （4.1μg/ mL-89.4μg/mL）. Six plant species were comparatively more effective against the fourth instar larvae at very low concentrations. These extracts demonstrated no or very low toxicity to guppy fish （poecilia reticulata）, which was selected to represent most common non-target organism found in habitats ofAe. aegypti, at concentrations active to mosquito larvae. Three medicinal plants with promising larvicidal activity, having LC50 and LC50 values being 4.1 and 16.4 μg/mL for Mammea siamensis, 20.2 and 34.7 μg/mL forAnethum graveolens and 67.4 and 110.3μg/mL forAnnona muricata, respectively, were used to study the impact of the extracts on the life cycle ofAe. aegypti. These plants affected pupal and adult mortality and also affected the reproductive potential of surviving adults by reducing the number of eggs laid and the percentage of egg hatchability. When each larval stage was treated with successive extracts at the LC50 value, the first instar larvae were found to be very susceptible to A. muricata and the second instar larvae were found to be susceptible to A. graveolens, while the third and fourth instar larvae were found to be susceptible to M. siamensis. These extracts delayed larval development and inhibited adult emergence and had no adverse effects on P. reticulata at LC50 and LC50 values, except for the M. siamensis extract at its LC50 value.

关键词： Aedes aegypti guppy fish larvicidal activity medicinal plants poecilia reticulata

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