Increased temperature, but not acidification, enhances fertilization and development in a tropical urchin: potential for adaptation to a tropicalized eastern Australia.
Increased temperature, but not acidification, enhances fertilization and development in a tropical urchin: potential for adaptation to a tropicalized eastern Australia.
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DOI：
10.1111/eva.12218
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发表时间：
2014-12
影响因子：
4.1
通讯作者：
Byrne M
中科院分区：
文献类型：
--
作者：
Foo SA;Dworjanyn SA;Khatkar MS;Poore AG;Byrne M
为了预测全球变化对海洋种群的影响，衡量气候压力因素对适应能力和潜力的影响非常重要。适应取决于人群中存在的应激耐受性的遗传变异。我们确定了近期海洋条件对印第安纳海胆受精成功率的影响。在 16 次母本杂交中，我们量化了原肠胚阶段对变暖（+3°C）和酸化（-0.3 至 0.5 pH 单位）耐受性的遗传变异。海洋酸化降低了所有母系-公系组合的受精量，并且 pH 值的影响在配对之间存在显着差异。 pH 值降低会降低正常原肠胚的百分比，而温度升高会减轻负面影响。环境相互作用的显着父系表明原肠胚形成时应激源耐受性存在遗传变异，因此有可能选择抗性基因型，这可能会增强群体的持久性。较低的遗传相关性表明，在低 pH 值下原肠胚形成时表现良好的基因型不一定在较高温度下表现良好。此外，受精时的表现并不一定能很好地预测原肠胚形成后期的表现。印第安纳拟牛肝菌的南部边缘种群可能会受益于未来的变暖，并有可能扩大其在澳大利亚东南部的分布。
To predict the effects of global change on marine populations, it is important to measure the effects of climate stressors on performance and potential for adaptation. Adaptation depends on heritable genetic variance for stress tolerance being present in populations. We determined the effects of near-future ocean conditions on fertilization success of the sea urchin Pseudoboletia indiana. In 16 multiple dam-sire crosses, we quantified genetic variation in tolerance of warming (+3°C) and acidification (−0.3 to 0.5 pH units) at the gastrulation stage. Ocean acidification decreased fertilization across all dam-sire combinations with effects of pH significantly differing among the pairings. Decreased pH reduced the percentage of normal gastrulae with negative effects alleviated by increased temperature. Significant sire by environment interactions indicated the presence of heritable variation in tolerance of stressors at gastrulation and thus the potential for selection of resistant genotypes, which may enhance population persistence. A low genetic correlation indicated that genotypes that performed well at gastrulation in low pH did not necessarily perform well at higher temperatures. Furthermore, performance at fertilization was not necessarily a good predictor of performance at the later stage of gastrulation. Southern range edge populations of Pseudoboletia indiana may benefit from future warming with potential for extension of their distribution in south-east Australia.
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影响因子：
3.3
作者：
Byrne, M.
通讯作者：
Byrne, M.
影响因子：
64.8
作者：
Edwards, M;Richardson, AJ
通讯作者：
Richardson, AJ
影响因子：
2.4
作者：
Byrne, M.;Prowse, T. A. A.;Vaitilingon, D.
通讯作者：
Vaitilingon, D.
影响因子：
3.7
作者：
Foo SA;Dworjanyn SA;Poore AG;Byrne M
通讯作者：
Byrne M
影响因子：
5.4
作者：
EISEN, EJ;SAXTON, AM
通讯作者：
SAXTON, AM