تواجد النوعين Limnodrilus hoffmeisteri و Branchiura sowerbyi في نهر الديوانية ودراسة سمية بعض المبيدات على النوعين

الموضوعات

علوم بحتة وطبيعية

روابط وملفات

التعريف والنوع

رقم الوثيقة

f9aedb71-53fe-4c85-9a8f-6a713de67860

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2087032_1.pdf

بيانات النشر

ترجمة العنوان

Study of Ecology of Al-Diwaniya River and Toxicology OF Some Pesticides on Two Species of Oligochaets Worms Limnodrilus hoffmeisteri and Branchiura sowebyi

ألقاب المؤلفين

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اللغة

Arabic

المصدر والدورية

اسم المصدر

تواجد النوعين Limnodrilus hoffmeisteri و Branchiura sowerbyi في نهر الديوانية ودراسة سمية بعض المبيدات على النوعين

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

Thisstudy included the effect of pesticides and salinity on annelidsL. hoffmeisteri and B. sowerbyi, it's involvedthe study of the five pesticides includedtwo insecticides Diablo& Cable, and three fungicidesCarbender, Mancozeb & Tonas, with obtaining of the mediate lethal concentration (LC50) of the pesticides and salinity, in addition to the effects of interference both salinity and pesticideson L. hoffmeisteri and B. sowerbyi. And study the behavior of the worms exposed to pesticides.The results of the present study showed that all pesticides had a significant effect on the survival of the species L. hoffmeisteri and B. sowerbyi, also found that the pesticides Diablo was more toxic to worms composed with other pesticides as the recorded time of mortality less than the death of 100% of worms at the concentrations of doubled, fielded and half concentrations 0.5,0.25,1.25ml/l respectively, which is the mortality time of the species B. sowerbyiis 1,0.33,1.66minutes, but the species L. hoffmeisteriwas the time of mortality 1.33,2.33,4.66 minutes, while the least effectivewas the Tonas within the concentrations 0.2,0.4,0.8 gm/l, record the time of mortality of the largest 37,85,184 minutes, respectively, for the B. sowerbyiand the 41,97,190 minutes to the L. hoffmeisteri.the statistical analysis results showed that the pesticides Carbender, Mancozeb and Tonas have significant effect on the mortality of 100% of the worms at the significant levels of 0.05.The effects ofextract of pesticides residues was clearly compared to the recommended (field) concentrations to the pesticides Cable, Carbender, Mancozeb and Tonas to the worms and the more effect is the residues of Diablo which record mortality time 1.3,1.66 minutes to the B. sowerbyiand L. hoffmeisterirespectively, and this indicates that the pesticides may be the largest and most comprehensive effect of the pesticide itself, especially when access to the aquatic environment.The interference of the pesticides with salt NaCl has reduced the effects of pesticides on the worms when the measured concentration in water is 0.25%, recording the time of mortality 1.6,7.66,155,19.6, 96 minutes of pesticides Diablo, Cable, Carbender, Mancozeb and Tonas brespectively for B. sowerbyi, and 3.6,10,163,104 minutes for the same pesticides respectively for L. hoffmeisteri.The study has shown that most of the worms exposed to fieldedconcentrations showedslow movement, the emergenceof strong tremors and inability to swim. Also recoded LC50 of the salt NaCl within 25 hours of expose is 0.1521 for B. sowerbyiand 0.2855 for L. hoffmeisteri, the values of LC50of pesticides for the same time was 0.000002m/lof the Diablo, 0.0001m/lof the Cable, 0.0007m/lof the Mancozeb,0.0122m/lof the Carbender and 0.0313 m/lfor the Tonas this in B. sowerbyi. The LC50values of pesticides for the for L. hoffmeisteriwas0.000003m/lto Diablo, 0.0001m/lto the Cable, 0.0007m/lto the Mancozeb, 0.0127m/lto the Carbender and 0.034 m/lto the Tonas.Generally, B. sowerbyiseemed more susceptible to pesticides and salinity than the L. hoffmeisteriespecially at Carbender, Mancozeb and Tonas, while the effect was similar for the two species to the Diablo and tight (approximately) for both at Cable.The present study aimed to find the environmental physic-chemical factorsof Al-DiwaniyaRiver by identifying some of a biotic factors of sampling studied areas on a monthly basis from November 2010 till June 2011. The study included the measurement of air temperature, which ranged between values 15.8-41.2Cº, and the water temperature which ranged between 13.3-32.8Cº, mud temperature, ranged between 13.2-32.2Cº, as pH values ranged between 2.8-3.7, and recorded of the electronic conductivity values of the station studied ranged between 1073.3-1486.6 μs/cm, and salinity ranged between 0.68-0.95 0%, the water flow recorded 0.20-0.78 m/s, and the values of dissolved oxygen ranged between, 4.8-9.13 mg/l, while the biological oxygen demand values ranged between 0.33-7.43 mg/l, the organic matter of samples studied stations recorded values ranged between 0.55-1.42%

إشراف وإعداد

الإشراف

نجم عبدالواحد الجدوع

الإعداد

أحمد صباح كاظم الجاسمي

الاقتباسات الببليوغرافية