时间：2022年10月11日（星期二）14:30-17:30

会议号：腾讯会议 749 336 865

主办：华中农业大学、湖北洪山实验室

承办：水产学院

报告人1：刘海平 14:30-15:30

题目：投身第三极水产资源养护，坚守高原绿水青山——高原特色鱼类研究进展

Devote to the conservation of the Third Polar aquatic resources, and adhere to the lucid waters and the lush mountains on the plateau——Research progress of characteristic fish in Plateau

摘要：我们研发了一系列围绕鱼类繁育、栖息地保护、表型组、鱼类命运归宿等服务于高原鱼类养护的核心技术，开展了青藏高原特有鱼类人工繁殖和育种等工作，阐明了西藏高原鱼类进化、适应与古地理、古气候之间的关系，阐述了裂腹鱼类、鮡科鱼类以及鳅科三大类群鱼类几千万年以来在进化和适应方面的趋同性和相异性，开发了全球第一套对鱼类无损，由表及里，3D扫描以及CT扫描硬件装置以及配套的全息VR软件。希望通过努力，实现鱼跃第三极的愿景。

We have developed a series of core technologies for plateau fish conservation, including fish breeding, habitat protection, phenome, phenotyping, and fate of fish, carried out artificial reproduction and breeding of fish endemic to the Qinghai-Tibet Plateau, elucidated the relationship among fish evolution, adaptation and palaeogeography and palaeoclimate in the Tibetan Plateau, described the evolutionary and adaptive convergence and divergence of three taxa fishes, including schizorbididae, Sisorbididae and Sisorbididae over tens of millions of years, developed the world's first set of fish non-destructive, from the surface to the inside, 3D scanning and CT scanning hardware devices and supporting holographic VR software. Wish to realize the vision of the third pole by diving through my efforts.

报告人2：黄春筱 15:30-16:30

题目：脊髓损伤后神经元轴突再生和运动神经环路重建的内源调控机制

Intrinsic mechanisms underlying axon regrowth and reconstruction of locomotor circuit after spinal cord injury

摘要：运动行为的产生依赖大脑运动区域产生的下行运动命令对脊髓“中央模式产生器（CPG）”的激活。脊髓损伤切断大脑下行连接的同时破坏了脊髓 CPG 神经环路，从而造成运动功能丧失。斑马鱼中枢神经再生能力强，是研究轴突再生和神经环路重建的良好模型。我们的研究发现脊髓 5-HT 神经元亚群通过作用于 5-HT1B 受体促进兴奋性中间神经元轴突再生的内源调控机制，并进一步揭示脊髓V2a 中间神经元轴突再生和环路重建规律及其对运动恢复的决定作用。

Locomotor behaviors are generated by descending motor commands from brain locomotor regions activating a spinal central pattern generator (CPG). Spinal cord injury (SCI) causes locomotor dysfunction by severing the supraspinal connections as well as disrupting the neuronal network in spinal CPG. Zebrafish shows remarkable regeneration ability of central nervous system, making it a robust model to study intrinsic mechanisms underlying axon regrowth and reconstruction of locomotor circuit after SCI. Our study revealed that a specialized subpopulation of intraspinal serotonergic neurons (ISNs) may promote axon regrowth of spinal excitatory interneurons by activating 5-HT1B receptor. We also described the orderly arrangement of axon regrowth of V2a interneurons and a principle governing the reestablishment of intraspinal de novo circuits that recapitulate developmental patterns and determine the stepwise restoration of locomotion.

报告人3：刘翠 16:30-17:30

题目：多营养级循环水养殖促进营养素的可持续利用

The multi-trophic recirculating aquaculture for sustainable utilization of nutritional elements

摘要：本研究在循环水养殖系统中引入单细胞初级生产者，并探究其对水质和元素利用的影响。多营养级循环水养殖系统由微藻培养池、养鱼池和微生物过滤池组成。微藻培养池的引入，对鱼类并没有影响。养鱼池中的氮磷化合物均不同程度降低，系统碳、氮和磷的固定率分别提高了28.72%、25.10%和161.5%。生产100g鲜鱼时，碳、氮和磷的排放分别减少5.92%、7.65%和22.44%。同时，微生物过滤池的微生物组成结构发生改变。多营养级循环水养殖可以促进水产养殖业的可持续发展。

As wastewater management and disposal in aquaculture has become increasingly important, we introduced a single-cell primary producer into the recirculating water culture process and evaluated it impact on water quality and element utilization. A recirculating aquaculture system was constructed by composing of filamentous microalgae (Oscillatoria sp.) culturing tank, fish rearing tank and microbial filtering tank. The fish production was not affected by the presence or absence of algae. The concentration of nitrogen and phosphorus compounds were reduced to some extent. The total fixed ratio of carbon, nitrogen, and phosphorus were increased 28.72%, 25.10%, and 161.5%, respectively. When yield 100 g fresh fish, the emissions of carbon, nitrogen, and phosphorus reduced 5.92%, 7.65%, and 22.44%, respectively. The abundances of Vicinamibacteria and Blastocatellia increased. Furthermore, Vicinamibacteria were identified as biomarker to estimate nitrogen levels. The microalgae cultured in recirculating aquaculture system may offer opportunities for improving the environmental sustainability and economic viability.