Good parenting may not increase reproductive success under environmental extremes.
Good parenting may not increase reproductive success under environmental extremes.
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DOI：
10.1111/jeb.13358
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发表时间：
2018-11
影响因子：
2.1
通讯作者：
Barber I
中科院分区：
文献类型：
--
作者：
Fox RJ;Head ML;Barber I
对于表现亲代照顾的物种，父母调整照顾行为以补偿环境变化的方式可能会影响后代的生存，并最终影响种群的生存能力。以三棘棘鱼（Gasterosteus aculeatus）为研究对象，研究了低溶解氧（DO）水平是如何影响父系抚育、胚胎发育和存活的。三棘棘鱼是一种雄性通过筑巢和扇卵来提供亲代抚育的物种。虽然巢的抚育水平不受DO水平的影响，但我们发现较大的雄性在低氧条件下更容易扇动它们的胚胎。这导致这些较大雄性的卵窝中的胚胎发育速度更快，但与较小雄性的卵窝相比，受精后7天的胚胎存活率降低。我们的研究结果表明，尽管父母可能试图通过改变照顾行为来补偿环境变化，但他们这样做的能力可能取决于父母的表型。这就建立了氧气水平对种群内选择的强度和方向起作用的可能性。我们讨论了这一令人惊讶的结果的可能解释，即体型较大的雄性在照料行为上的适应性变化（如扇扇增加）导致受精后7天胚胎存活率降低，以及是否因此，急性环境条件可能有可能压倒性特征的选择。
For species exhibiting parental care, the way in which parents adjust care behaviour to compensate for environmental change potentially influences offspring survival and, ultimately, population viability. Using the three‐spined stickleback (Gasterosteus aculeatus) – a species in which males provide parental care by building and tending a nest and fanning the eggs – we examined how low dissolved oxygen (DO) levels affect paternal care, embryo development and survival. Although levels of nest tending were unaffected by DO level, we found that larger males fanned their embryos more under low oxygen conditions. This resulted in faster rates of embryo development within the clutches of these larger males, but reduced embryo survival at 7 days post‐fertilization compared to clutches of smaller males. Our results suggest that although parents may attempt to compensate for environmental change via alterations to care behaviour, their ability to do so can be dependent on parental phenotype. This sets up the potential for oxygen levels to act on the strength and direction of selection within populations. We discuss possible explanations for the surprising result that supposedly adaptive changes in care behaviour by large males (i.e. increased fanning) led to reduced embryo survival at 7 days post‐fertilization, and whether, as a consequence, acute environmental conditions may have the potential to overwhelm selection on sexual traits.
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影响因子：
2.6
作者：
Klug, Hope;Bonsall, Michael B.
通讯作者：
Bonsall, Michael B.
影响因子：
2.1
作者：
Candolin, U.;Salesto, T.;Evers, M.
通讯作者：
Evers, M.
影响因子：
2.4
作者：
Barber, I;Nairn, D;Huntingford, FA
通讯作者：
Huntingford, FA
影响因子：
4.8
作者：
Candolin, Ulrika;Tukiainen, Iina;Bertell, Elina
通讯作者：
Bertell, Elina
DOI：
10.1098/rspb.2005.3458
发表时间：
2006-06-07
影响因子：
4.7
作者：
Cockburn, Andrew
通讯作者：
Cockburn, Andrew