Understanding Risks of Long-term Introgression From Salmon Aquaculture (SSA)

水产养殖被认为是满足日益增长的人口对动物蛋白日益增长的需求的关键解决方案。养鱼是一种相对较新的驯化形式，目前，我们正处于其发展的早期阶段，有足够的机会提高生产力和可持续性。在水产养殖业中，鲑鱼养殖是一个关键角色，自1979年开始养殖以来，生产率飙升。尽管三文鱼养殖取得了巨大成功，但人们对三文鱼养殖的可持续性和环境影响存在担忧。在这个博士项目中，你将研究养殖场和野生鲑鱼杂交F1的繁殖潜力，产生关于养殖场鲑鱼逃逸的长期影响的关键数据。这些“杂交”鱼可能表现出繁殖性能下降，以减轻对内向的担忧，或者它们可能具有类似甚至更好的繁殖性能。因此，PhD将使用体外和体内繁殖潜力的分析，对农场和野生三文鱼杂交品种的长期繁殖进行全面的风险评估。该项目将在挪威和苏格兰的野外地点由UEA和合作者合作，进行受精实验，以测量野生、农场和杂交配子的适合性，并记录和分析成年鲑鱼的产卵行为和表现。

Aquaculture is identified as a key solution to satisfying increasing demands for animal protein from a growing human population. Farming fish is a relatively new form of domestication and, right now, we are at an early stage in its development, with ample opportunity to improve productivity and sustainability. Within aquaculture, salmon farming is a key player, with productivity surging since it started in 1979. Despite its great success, concerns exist about the sustainability and environmental impact of salmon farming. In this PhD project, you will research the reproductive potential of F1 hybrids between farm and wild salmon interbreeding, generating key data on long-term impacts of farm salmon escapes. These 'hybrid' fish could show reduced reproductive performance, allaying concerns about introgression, or they may have similar or even superior reproductive performance. The PhD will therefore conduct a full risk assessment of longer-term reproduction of farm x wild salmon hybrids, using both in vitro and in vivo assays of reproductive potential. The project will operate between UEA and collaborators at field sites in Norway and Scotland, conducting fertilisation experiments to measure the fitness of wild, farm and hybrid gametes, and recording and analysing spawning behaviour and performance of adult salmon.