Genetic divergence among threespine stickleback that differ in nuptial coloration
Genetic divergence among threespine stickleback that differ in nuptial coloration
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三刺刺鱼婚后颜色不同的遗传差异
DOI：
10.1111/jeb.14035
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发表时间：
2022
影响因子：
2.1
通讯作者：
Tinghitella, Robin M.
中科院分区：
文献类型：
--
作者：
Jenck, Clara S.;Lehto, Whitley R.;Hunnicutt, Kelsie E.;Murphy, Shannon M.;Quinn, Thomas W.;Larson, Erica L.;Tinghitella, Robin M.
性信号是由其预期和非预期的接收者以及信号环境塑造的。性选择和自然选择之间的这种相互作用可能导致异质环境中信号的分歧。然而，当信号表型在不同环境中变化时，基因流动在多大程度上受到限制，以及在什么样的空间尺度上仍然是一个悬而未决的问题。在这项研究中，我们量化的基因流之间的两种颜色的变体，红色和黑色，淡水threespine棘鱼（Gasterosteus aculeatus）。我们利用这个系统中信号表型的最近分歧来表征物种内和形态间的遗传变异，并测试俄勒冈州和华盛顿颜色形态之间的基因流水平。尽管有限的证据表明，异地红色和黑色种群之间的相互交配，我们发现，黑色种群的遗传与附近的红色种群不同，黑色变体似乎在俄勒冈州和华盛顿独立进化了至少两次。令人惊讶的是，我们发现了一组棘鱼在一个小的沿海溪流，康纳溪，这是遗传和形态不同的红色和黑色的变种和海洋棘鱼。从历史上看，这两种颜色变体在这个地方共存，有时杂交，对这些鱼的起源和历史提出了新的问题，这些鱼在50年前首次被描述为溯河产卵的黑色杂交鱼。了解遗传变异是如何目前分配内和种群之间和颜色形态在这个系统中，应促使未来的研究，以评估栖息地，生态和前和后生殖障碍的遗传分歧和表型模式，我们观察到在nature.AbstractThe之间的相互作用自然和性选择可能会导致分歧的动物信号在异质性环境中。但是，当信号在不同的环境中变化时，基因流动受到了多大的限制？在什么样的空间尺度上？我们的特点是物种内和之间的变形遗传变异和基因流之间的两种颜色的三个棘鱼（红色和黑色）。我们发现，黑棘鱼种群在遗传上与附近的红色种群不同，并且在北美西北部，黑色变体至少独立进化了两次。
Sexual signals are shaped by their intended and unintended receivers as well as the signalling environment. This interplay between sexual and natural selection can lead to divergence in signals in heterogeneous environments. Yet, the extent to which gene flow is restricted when signalling phenotypes vary across environments and over what spatial scales remains an outstanding question. In this study, we quantify gene flow between two colour morphs, red and black, of freshwater threespine stickleback fish (Gasterosteus aculeatus). We capitalize on the very recent divergence of signalling phenotypes in this system to characterize within‐species and among‐morph genetic variation and to test for levels of gene flow between colour morphs in Oregon and Washington. Despite limited evidence for assortative mating between allopatric red and black populations, we found that black populations are genetically distinct from nearby red populations and that the black morph appears to have evolved independently at least twice in Oregon and Washington. Surprisingly, we uncovered a group of stickleback in one small coastal stream, Connor Creek, which is genetically and morphologically distinct from the red and black colour morphs and from marine stickleback. Historically, both colour morphs have coexisted in this location and sometimes hybridized, raising new questions about the origins and history of these fish, which were first described as anadromous‐black hybrids >50 years ago. Understanding how genetic variation is currently partitioned within and among populations and colour morphs in this system should prompt future studies to assess the relative roles of habitat, ecological and pre‐ and post‐reproductive barriers in the genetic divergence and phenotypic patterns we observe in nature.AbstractThe interplay between natural and sexual selection can lead to divergence in animal signals in heterogeneous environments. But how much is gene flow restricted when signals vary across environments, and over what spatial scales? We characterized within‐species and among‐morph genetic variation and gene flow between two colour morphs of three spine stickleback (red and black). We found that black stickleback populations are genetically distinct from nearby red populations and that the black morph evolved independently at least twice in northwest North America.
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影响因子：
3.3
作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
通讯作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
河流网络的结构可以驱动水生种群的进化动态
影响因子：
3.3
作者：
Andréa T. Thomaz;Mark R. Christie;L. Knowles
通讯作者：
L. Knowles
刺鱼（Gasterosteus）的捕食和进化
DOI：
--
发表时间：
1969
期刊：
影响因子：
--
作者：
J. Mcphail
通讯作者：
J. Mcphail
影响因子：
64.8
作者：
MILINSKI, M;BAKKER, TCM
通讯作者：
BAKKER, TCM
三刺刺鱼的表型差异在婚配颜色上有所不同
影响因子：
2.6
作者：
Clara S Jenck;Whitley R Lehto;B. Ketterman;Lukas F. Sloan;Aaron N. Sexton;R. Tinghitella
通讯作者：
R. Tinghitella