本文選題：脈紅螺 + 代謝　； 參考：《山東大學(xué)》2015年碩士論文

【摘要】：本論文結(jié)合脈紅螺自身的代謝特點(diǎn)和如今環(huán)境污染的現(xiàn)狀,以不同溫度及不同重金屬條件下脈紅螺及其幼體耗氧率和排氨率的變化入手,探索脈紅螺生長及其幼體發(fā)育的最適水溫以期用于生產(chǎn)實(shí)踐,同時(shí)探索了脈紅螺及其幼體對(duì)幾種重金屬離子的耐受性及對(duì)現(xiàn)今水體污染的適應(yīng)性。本論文取得的主要實(shí)驗(yàn)結(jié)果如下：1.獲得了脈紅螺生長和其幼體發(fā)育的最適溫度范圍。研究發(fā)現(xiàn),在10-30℃溫度范圍內(nèi),脈紅螺的耗氧率隨溫度升高而加快,而排氨率在10-20℃溫度范圍內(nèi),隨溫度升高而加快,高溫(25℃以上)對(duì)脈紅螺的排氨率反而有一定的抑制作用,最適溫度范圍在20-25℃。而脈紅螺幼體的耗氧率和排氨率在15-25℃范圍內(nèi)隨溫度的升高而加快,最適溫度約為25℃。2.測(cè)定了不同重金屬條件下脈紅螺耗氧率和排氨率隨時(shí)間的變化。研究發(fā)現(xiàn)在鋅離子0-80μg/L實(shí)驗(yàn)濃度范圍內(nèi)對(duì)脈紅螺耗氧率影響不明顯,但在0-40μg/L鋅離子濃度范圍內(nèi),脈紅螺的排氨率隨重金屬濃度的升高而上升,但高濃度的鋅離子則會(huì)降低排氨率。0-20μg/L銅離子濃度范圍內(nèi),脈紅螺耗氧率和排氨率隨重金屬濃度的升高而上升,但當(dāng)銅離子濃度繼續(xù)升高時(shí)耗氧率和排氨率都會(huì)降低。而鉛離子濃度在≥20μg/L是即對(duì)脈紅螺的耗氧率和排氨率有抑制作用。3.測(cè)定了不同重金屬條件下脈紅螺幼體耗氧率和排氨率隨時(shí)間的的變化。研究發(fā)現(xiàn)在實(shí)驗(yàn)濃度范圍內(nèi),鋅離子濃度對(duì)脈紅螺的耗氧率幾乎沒有影響,而201μg/L濃度的鋅離子對(duì)脈紅幼體的排氨率在整個(gè)實(shí)驗(yàn)過程中表現(xiàn)為促進(jìn)作用,40μg/L、80μg/L組表現(xiàn)出前期的促進(jìn)效果和后期的抑制效果。銅離子在實(shí)驗(yàn)濃度范圍內(nèi)對(duì)脈紅螺幼體耗氧率表現(xiàn)出實(shí)驗(yàn)前期80μg/L、20μg/L、40μ/L逐漸增強(qiáng)的促進(jìn)效果和后期逐漸增強(qiáng)的抑制效果；對(duì)脈紅螺幼體的排氨率表現(xiàn)出20μg/L時(shí)的促進(jìn)作用和40μg/L、80μg/L濃度時(shí)的抑制作用。鉛離子在實(shí)驗(yàn)濃度范圍內(nèi)對(duì)脈紅螺幼體耗氧率和排氨率的影響都表現(xiàn)出0-40μg/L低濃度范圍的促進(jìn)和80ug/L高濃度時(shí)的先促進(jìn)后抑制。
[Abstract]:In this paper, according to the metabolic characteristics and environmental pollution, the changes of oxygen consumption rate and ammonia excretion rate under different temperature and different heavy metal conditions were studied. The optimum water temperature for the growth and development of the snail was explored in order to be used in the production practice. The tolerance to several heavy metal ions and the adaptability to the water pollution were also explored. The main experimental results obtained in this thesis are as follows: 1. The optimum temperature range of growth and larval development was obtained. The results show that the oxygen consumption rate increases with the increase of temperature, while the ammonia excretion rate increases with the increase of temperature in the temperature range of 10-30 鈩，

本文編號(hào)：1916423