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首页> 外文期刊>African Journal of Biotechnology >Biochemical evaluation of aestivation and starvation in two snail species
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Biochemical evaluation of aestivation and starvation in two snail species

机译：两个蜗牛物种的饥饿和饥饿的生化评估

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There is resurgence in incidence of schistosomiasis in Nigeria with attendant socio-economic and health impact. The agents transmitting this disease are theBulinus?snails which employ aestivation to survive conditions of unfavourable weather such as lack of food and water. The mechanism of aestivation under aridity and drought is not clear. This study therefore investigated the effects of aestivation and starvation on endogenous metabolic reserves in haemolymph of two snail species namely:?Bulinus globosus?(Morelet) and?Bulinus rohlfsi?(Clessin). Aestivation, starvation and control experiments were set up for 30 days in the laboratory by placing three groups of snails collected from Oyan dam, Abeokuta in standard aestivation slope (30?B. globosus?and 19?B. rohlfsi), aquarium (30?B. globosus?and 23?B. rohlfsi) and control slope which had 20?B. globosus?and 15?B. rohlfsi. Aestivation and control slopes contained water and mixture of sand and clay (3:1), while aquarium contained water only for starvation. All the snails were fed on lettuce?ad libitum?for 28 days during which water was completely drained out in the aestivation slope. The aestivation slope and aquarium were left for another 30 days without lettuce. Snails were thereafter sacrificed and haemolymph biochemical parameters were assayed. In aestivating and starving?B. globosus, haemolymph creatinine, urea, total protein, glucose, alanine transferases (ALT) and aspartate transferases (AST) were significantly decreased,?while haemolymph total cholesterol, triglyceride and?a-amylase concentrations and activity increased significantly?(p < 0.05). In?B. rohlfsi,?creatinine, urea, ALT and AST were significantly decreased when compared with controls (p < 0.05).?B. globosus?and?B. rohlfsipossess ability to survive unfavourable conditions by economical utilization of stored metabolites, thus enabling them to carry infection from one season to the next. Our findings suggest that?B.?globosus?is a better aestivator than?B. rohlfsi.
机译：尼日利亚血吸虫病的发病率重新上升，并伴随着社会经济和健康影响。传播这种疾病的病原体是钉螺（Bulinus？snail），它们通过人工培养来生存在不利的天气条件下，例如食物和水的缺乏。干旱干旱条件下的人工造林机制尚不清楚。因此，本研究调查了厌食和饥饿对两种蜗牛种类的血淋巴内源性代谢储备的影响：“ Bulinus globosus”（Morelet）和“ Bulinus rohlfsi”（Clessin）。通过将三组从阿贝库塔（Obeokuta）Oyan大坝收集的蜗牛放在标准的培养坡度（30？B。globosus？和19？B。rohlfsi），水族馆（30？ B. globosus？和23？B。rohlfsi）和对照坡度为20？B。 globosus和15？B。罗尔夫西。耕作和控制坡面都含水，还有沙子和粘土的混合物（3：1），而水族馆只含水以供饥饿。所有蜗牛都在莴苣上自由采食28天，在此期间，水分在耕作坡度中被完全排出。陶土坡和水族箱再留30天不生菜。然后将蜗牛处死并测定血淋巴的生化参数。在陶醉和饥饿中？球蛋白，血淋巴肌酐，尿素，总蛋白，葡萄糖，丙氨酸转移酶（ALT）和天冬氨酸转移酶（AST）明显降低，而血淋巴总胆固醇，甘油三酸酯和α-淀粉酶浓度和活性显着增加（p <0.05） 。在吗？与对照组相比，rohlfsi，肌酐，尿素，ALT和AST显着降低（p <0.05）。 globosus和B. rohlfsiposes具有通过经济利用储存的代谢产物而在不利条件下生存的能力，从而使它们能够从一个季节到下一个季节进行感染。我们的发现表明，“球孢杆菌”比“球孢杆菌”更能吸引人。罗尔夫西。

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