Phenotypic plasticity and adaptation in the morphology, life history traits and bioenergetics of introduced species

引进物种的形态、生活史特征和生物能学的表型可塑性和适应性

• 批准号: 46680-2013
• 负责人: Fox, Michael
• 金额: $ 1.97万
• 依托单位: Trent University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=568986
• 关键词: Phenotypic; plasticity; adaptation; morphology; life

My Discovery Grant research in this cycle will focus on the life history, morphology, genetics and bioenergetics of invasive fish populations; their ability to respond to new opportunities presented by novel environments and the loss of adaptations to the native environment. Hypotheses will be tested that identify and explain observed life history differences between native and non-native populations, the dynamic alteration of life history traits as invasive species expand their range, fitness advantages to individuals that migrate into new areas, morphological plasticity in invasive populations, and energetic adaptations of invasive populations to a novel thermal regime. Dynamic aspects of range expansion will be assessed on a Round Goby in Ontario that we have studied since 2006. Population and life-history traits will be compared at the edge of its expanding range with those of its previous-year edge to test whether this species rapidly shifts life history strategies. Population density and habitat data will be incorporated into a range expansion model we developed. Field trials will be conducted to determine the effect of goby biomass, depth, velocity and substrate on goby eDNA, and an eDNA detectability model will be developed from these data. Mitochrondrial and microsatellite DNA will be analyzed from native and non-native Pumpkinseed to identify the area of origin and mechanisms of range expansion in the Iberian Peninsula where the species is invasive. Using progeny from Pumpkinseed colonies established locally from source populations in Spain and Ontario, trophic common environment experiments will be conducted with juveniles to assess morphological plasticity and to test alternative hypotheses to explain the loss of adaptations to native thermal regimes. Life-history traits of progeny from these colonies will be assessed to determine the relative contribution of inheritance and phenotypic plasticity to observed life history differences. The proposed research provides a unique opportunity to explain why particular species are successful invaders in some regions but not others.

我在这个周期中的发现赠款研究将重点关注侵入性鱼类种群的生活史，形态，遗传学和生物能学；他们能够应对新的环境带来的新机会以及对本地环境的改编的能力。将测试假设，以识别并解释观察到的生命历史历史差异，作为入侵物种的生命历史特征的动态变化扩大了其范围，对迁移到新领域的个人的适应性优势，在入侵人群中的形态可塑性以及对新型热热制度的侵入性适应性适应性。 自2006年以来我们研究的安大略省的圆形哥比（Goby）将评估范围扩展的动态方面。将在其扩展范围的边缘与前一年边缘的人口和生活历史特征进行比较，以测试该物种是否会迅速改变生活历史策略。人口密度和栖息地数据将纳入我们开发的范围扩展模型中。将进行现场试验，以确定Goby生物量，深度，速度和底物对Goby Edna的影响，并将从这些数据中开发出EDNA可检测性模型。 线粒体和微卫星DNA将从天然和非本地南瓜子进行分析，以识别该物种具有侵入性的伊比利亚半岛的起源和范围扩张机制。利用来自西班牙和安大略省源人群本地建立的南瓜子菌落的后代，将使用少年进行营养的共同环境实验，以评估形态可塑性并检验替代假设，以解释对天然热方案的适应性丧失。将评估来自这些菌落的后代的生命历史特征，以确定遗传和表型可塑性对观察到的生活历史差异的相对贡献。拟议的研究提供了一个独特的机会，可以解释为什么特定物种在某些地区成功入侵者而不是其他地区。