幼態動物 的英文怎麼說
中文拼音 [yòutàidòngwù]
幼態動物
英文
larva-
Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time
隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。After molting three times, the zoea enter the mysis stage during which they begin to look more like adult shrimp and swim in a characteristic fashion with head and tail pointed downwards at right angles and occasionally performing a sudden retrograde jumping action. this is known as the inversion state, the fry being suspended upside - down in the upper middle region of the pond water. this is, therefore, also called the " inverted suspension phase "
眼幼蟲脫第三次即進入糠蝦期幼蟲期mysis stage ，此期之體形已略成蝦之狀態，且具特有之游泳姿態，即頭部及尾部均向下，成一直角彎曲而時作向後跳躍游動，又因成倒立狀態，懸浮於水中的中上層，又叫倒吊期，此期幼蟲對外界的環境因素，如水溫鹽分等變化，比前兩期來得更具適應力，主要餌料為豐年蝦brine shrimp的幼蟲，但其他大小略同的動物性浮游生物，如橈腳類copepoda輪蟲類rotifera均可。Standard guide for conducting static acute toxicity tests starting with embryos of four species of saltwater bivalve molluscs
用四種鹹水雙殼類軟體動物幼蟲進行的靜態急性毒力試驗的標準指南A series of experiments were conducted on the salivary gland of female haemaphysalis longicornis neumann, including salivary gland structure, protein concentration and components, na k - atpase activity, as well as their variation during different developmental stages, especially the effects of juvenile hormone analogue farnesol on the structure and secretion of salivary glands, by scanning electron microscope ( sem ), bradford method, sds - page, enzyme microanalysis, topical application etc. the present research will provide foundation for deeply investigations on the important organs in the future
本文以廣泛分佈於我國的長角血蜱haemaphysalislongicornisneumann為研究對象，利用電鏡技術、 bradford法、 sds ? page和na ~ - 、 k ~ - - atpase活性微量檢測法等現代生物學技術對其唾液腺結構、蛋白含量和成分、 na ~ - 、 k ~ - ? atpase活性及其動態變化，特別是保幼激素類似物法尼醇對唾液腺結構與分泌活性的影響進行了較系統地研究，為深入開展蜱類唾液腺研究提供依據。From this point, this study frees from the traditional limit which focuses on adult plant only, putting the stress on studying the dynamic adaptive change of the structure and function of the sprout
本研究以此為出發點，擺脫傳統的對旱生植物成株研究的局限，側重研究旱生植物自種子萌發開始后約60天內的幼苗結構、功能的動態適應變化。In summary, the exotic species can affect native bird species in four main ways, 1 ) predation of birds or eggs by the exotic mammals ; 2 ) competition for habitats and foods with exotic birds, and loss of genetic diversity by hybridization with the closely - related exotic species ; 3 ) direct and indirect alterations of native habitats and food resources, and predation by the exotic invertebrates ; and 4 ) loss and fragmentation of habitats for native birds through altering species composition and structure of native plant communities by exotic plants
外來生物對鳥類的影響主要表現在以下幾方面： （ 1 ）外來哺乳動物對成鳥、幼鳥或鳥卵的捕食作用； （ 2 ）外來鳥類與本地鳥類競爭棲息地和食物資源，與當地的近緣種雜交而造成基因流失； （ 3 ）外來無脊椎動物改變本地鳥類的棲息環境和食物狀況，甚至直接捕食本地鳥類； （ 4 ）外來植物入侵改變入侵地的植物群落組成和結構，造成本地鳥類的棲息地喪失或破碎化，並通過改變入侵地生態系統的食物鏈結構而對高營養級的鳥類產生影響。Many organisms that spend their adult life stuck on the bottom of the seafloor start out as zooplankton in their larval stage
許多成年後附著在海底的生物， ?們在幼蟲時期是以浮遊動物的型態生活。Meanwhile, on the base of the related art origin of theory and play theory, i demonstrate the children art education, and consider the art activity which is of shape, inner recognition and operational pleasure is the best selection. the children art education derive from the natural situation, as a result of inner cognitive psychology adjustment and sign movement to the stimulus from the outer environment. satisfied with the physical need, the children go into play situation consciously or unconsciously, in means of tools, materials and symbols to express the objective reality, will and ideology
幼兒美術的發生是自然狀態中，幼兒在外界事物刺激下，通過認知心理的內部調適，支配肢體運動的結果；幼兒美術是在滿足生理需要，在知覺的基礎上、外界事物刺激下、輕松愉悅的氛圍中，幼兒有意無意地進入游戲狀態，藉助工具、材料、符號等自然手段，反映客觀現實、願望和自我意象。Organic enzymes and chlorkenzuron to controlammonia and flies ' larvae in poultry houses
生態酶制劑和滅幼脲聯合控制動物養殖場氨氣和蠅類的研究Freshly hatched nauplii provide, in most cases, an available source of live food for the youngest stages of most cultured species of larval fish and crustacea
眼幼蟲最適合於幼魚蝦初期食用。在幼魚蝦期時，需要一種很小，而且具有活性動態的高營養物來供它們攝食。Conclusion depending on temptation of food and water, the separate apparatus can separate the blattela germanica ' s imagoes and larvae automatically, and the ages of acquired larvae are uniform on the whole
結論自然狀態下，該分離器依靠食物和水的引誘作用，能夠將德國小蠊成、幼蟲自動分離，所獲幼蟲齡期基本一致。There are also desert insects which survive as inactive larvae. in addition, difficult as it is to believe, there are desert fish which can survive through years of drought in the form of inactive eggs
在沙漠的環境中，也有些昆蟲以不活動幼蟲的狀態存活。而令人難以置信的是，有些沙漠水生動物，它們的卵能在乾旱時存活多年。分享友人