The ecology of an adaptive radiation of three-spined stickleback from North Uist, Scotland.
The ecology of an adaptive radiation of three-spined stickleback from North Uist, Scotland.
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DOI：
10.1111/mec.13746
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发表时间：
2016-09
影响因子：
4.9
通讯作者：
MacColl AD
中科院分区：
文献类型：
--
作者：
Magalhaes IS;D'Agostino D;Hohenlohe PA;MacColl AD
人们非常关注与适应相关的性状遗传学，但对导致适应性变化的环境变量的了解却出奇地少。环境数据与形态学和基因组数据的结合使用应该使我们能够了解环境结构可以在多大程度上解释物种内的表型和遗传多样性模式。在这里，我们分析了苏格兰北尤伊斯特 27 个淡水湖中环境差异很大的三刺刺鱼种群的变化，以了解环境和遗传限制如何导致表型差异。我们收集了每个种群 35 个个体和 30 个非生物和生物环境参数，以表征湖泊之间的变化并分析表型与环境的关联。此外，我们使用 RAD 测序来估计这些人群子集之间的遗传关系。我们发现不同种群之间存在大量表型变异，最突出的是盔甲和脊柱特征。尽管非生物环境（即离子组成、深度和溶解的有机碳）存在很大差异，但更多的表型变异是由生物变量（捕食者的存在以及捕食者和竞争者的密度）解释的，而不是由相关的非生物变量解释的。种群间的遗传结构部分是地理性的，越接近的种群越相似。总而言之，我们的结果表明，刺鱼种群体形的差异是运河遗传和塑料对环境因素反应的结果，这些环境因素以可预测的方向塑造了鱼类的形态，无论其遗传起点如何。
There has been a large focus on the genetics of traits involved in adaptation, but knowledge of the environmental variables leading to adaptive changes is surprisingly poor. Combined use of environmental data with morphological and genomic data should allow us to understand the extent to which patterns of phenotypic and genetic diversity within a species can be explained by the structure of the environment. Here, we analyse the variation of populations of three‐spined stickleback from 27 freshwater lakes on North Uist, Scotland, that vary greatly in their environment, to understand how environmental and genetic constraints contribute to phenotypic divergence. We collected 35 individuals per population and 30 abiotic and biotic environmental parameters to characterize variation across lakes and analyse phenotype–environment associations. Additionally, we used RAD sequencing to estimate the genetic relationships among a subset of these populations. We found a large amount of phenotypic variation among populations, most prominently in armour and spine traits. Despite large variation in the abiotic environment, namely in ion composition, depth and dissolved organic Carbon, more phenotypic variation was explained by the biotic variables (presence of predators and density of predator and competitors), than by associated abiotic variables. Genetic structure among populations was partly geographic, with closer populations being more similar. Altogether, our results suggest that differences in body shape among stickleback populations are the result of both canalized genetic and plastic responses to environmental factors, which shape fish morphology in a predictable direction regardless of their genetic starting point.
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影响因子：
64.8
作者：
Jones, Felicity C.;Grabherr, Manfred G.;Chan, Yingguang Frank;Russell, Pamela;Mauceli, Evan;Johnson, Jeremy;Swofford, Ross;Pirun, Mono;Zody, Michael C.;White, Simon;Birney, Ewan;Searle, Stephen;Schmutz, Jeremy;Grimwood, Jane;Dickson, Mark C.;Myers, Richard M.;Miller, Craig T.;Summers, Brian R.;Knecht, Anne K.;Brady, Shannon D.;Zhang, Haili;Pollen, Alex A.;Howes, Timothy;Amemiya, Chris;Lander, Eric S.;Di Palma, Federica;Lindblad-Toh, Kerstin;Kingsley, David M.
通讯作者：
Kingsley, David M.
影响因子：
56.9
作者：
Barrett, Rowan D. H.;Rogers, Sean M.;Schluter, Dolph
通讯作者：
Schluter, Dolph
影响因子：
2.3
作者：
Ballantyne, Colin K.
通讯作者：
Ballantyne, Colin K.
DOI：
10.1080/00949659908811936
发表时间：
1999-01-01
影响因子：
1.2
作者：
Anderson, MJ;Legendre, P
通讯作者：
Legendre, P
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y