The evolution of adult pollen feeding did not alter postembryonic growth in Heliconius butterflies.
The evolution of adult pollen feeding did not alter postembryonic growth in Heliconius butterflies.
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成年花粉喂养的演变并没有改变Heliconius蝴蝶胚后生长。
DOI：
10.1002/ece3.8999
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发表时间：
2022-07
影响因子：
2.6
通讯作者：
中科院分区：
文献类型：
--
作者：
对于许多动物来说，在幼年和成年阶段，食物资源的可获得性和供应可能有明显的差异，往往导致营养获取和使用的时间分离。青少年的发育计划可能受到许多具有早期发育起源的成人组织和过程的能量需求的限制。因此，成体阶段提高的饮食质量可能会改变对幼体阶段生活史和生长模式的选择。在蝴蝶中，赫利柯斯是独一无二的，它积极地收集和消化花粉颗粒，这为成年蝴蝶提供了必要的氨基酸来源。因此，以前的假设是，花粉取食的起源是为了解除对幼虫生长速度的限制，使赫利柯伊斯在幼虫最容易被捕食的时候，花更少的时间作为幼虫。通过测量三个取食花粉和三个不取食花粉的天牛的幼虫和蛹的生活史特征，我们对这一假说进行了第一次检验。虽然我们在幼虫和蛹的发育中发现了显著的种间差异，但我们没有发现与花粉取食有关的任何一致的变化。我们讨论了这一结果如何与氮素分配模式相适应，氮素储存的好处，以及生长发育的限制。我们的结果为研究提供了一个框架，旨在将成年赫利柯伊斯的创新与生命早期阶段改变的选择制度和发育计划联系起来。赫利柯斯蝴蝶成年后收集并消化花粉颗粒--这是近亲所缺乏的一种新的氨基酸来源。据推测，取食花粉的进化降低了螺旋藻幼虫生长的蛋白质目标，使它们能够更快地发育，从而在这个脆弱的阶段花费更少的时间，并使该系统成为在不同生命阶段转移权衡和限制的潜在案例研究。我们通过比较6个种的幼虫生长曲线和生活史特征正式检验了这一假说，并表明，虽然发育参数存在变化，但不能用成虫取食花粉的存在来解释。
For many animals, the availability and provision of dietary resources can vary markedly between juvenile and adult stages, often leading to a temporal separation of nutrient acquisition and use. Juvenile developmental programs are likely limited by the energetic demands of many adult tissues and processes with early developmental origins. Enhanced dietary quality in the adult stage may, therefore, alter selection on life history and growth patterns in juvenile stages. Heliconius are unique among butterflies in actively collecting and digesting pollen grains, which provide an adult source of essential amino acids. The origin of pollen feeding has therefore previously been hypothesized to lift constraints on larval growth rates, allowing Heliconius to spend less time as larvae when they are most vulnerable to predation. By measuring larval and pupal life‐history traits across three pollen‐feeding and three nonpollen‐feeding Heliconiini, we provide the first test of this hypothesis. Although we detect significant interspecific variation in larval and pupal development, we do not find any consistent shift associated with pollen feeding. We discuss how this result may fit with patterns of nitrogen allocation, the benefits of nitrogenous stores, and developmental limitations on growth. Our results provide a framework for studies aiming to link innovations in adult Heliconius to altered selection regimes and developmental programs in early life stages. Heliconius butterflies collect and digest pollen grains as adults—a novel source of amino acids which close relatives lack. The evolution of pollen‐feeding is hypothesized to have reduced the protein target for growing Heliconius larvae, enabling them to develop faster and thus spend less time in this vulnerable stage, and making the system a potential case study on shifting trade‐offs and constraints in different life stages. We formally test this hypothesis by comparing larval growth curves and life‐history traits across 6 Heliconiini species, and show that, while there is variation in developmental parameters, it is not explained by the presence of adult pollen‐feeding.
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影响因子：
1
作者：
Ahlstrom, T.
通讯作者：
Ahlstrom, T.
影响因子：
2.7
作者：
Cahenzli, Fabian;Erhardt, Andreas
通讯作者：
Erhardt, Andreas
DOI：
10.1073/pnas.69.6.1403
发表时间：
1972-01-01
影响因子：
11.1
作者：
GILBERT, LE
通讯作者：
GILBERT, LE
影响因子：
5.2
作者：
Cotter, Sheena C.;Simpson, Stephen J.;Wilson, Kenneth
通讯作者：
Wilson, Kenneth
DOI：
10.1016/0020-1790(87)90037-0
发表时间：
1987-01-01
期刊：
INSECT BIOCHEMISTRY
影响因子：
--
作者：
DAVIS, RH;NAHRSTEDT, A
通讯作者：
NAHRSTEDT, A