A distance–performance trade‐off in the phenotypic basis of dispersal
A distance–performance trade‐off in the phenotypic basis of dispersal
复制标题
分散表型基础上的距离-性能权衡
DOI：
10.1002/ece3.5583
复制
发表时间：
2019
影响因子：
2.6
通讯作者：
Lowe, Winsor H.
中科院分区：
文献类型：
--
作者：
Addis, Brett R.;Tobalske, Bret W.;Davenport, Jon M.;Lowe, Winsor H.
在不同的分类群中，个体的分散程度各不相同，大多数个体都靠近它们的起源地，很少有个体分散很远的距离。与分散相关的成本（例如，能量，风险）被广泛认为是与利益（例如，减少竞争，增加繁殖成功），以影响扩散倾向。然而，这一框架并没有被应用于理解扩散距离的变化，而是通常归因于外部环境因素。我们还假设，分散距离的变化是与运动性能的其他方面相关的权衡结果。我们在流salamanderGyrinophilus porphyriticus中测试了这一假设，发现在实验条件下，在野外分散得更远的蝾螈有更长的前肢，但游泳速度较慢。长距离分散的游泳性能下降可能是由于较长的前肢施加的阻力。较长的前肢可能有助于长距离移动，但与游泳性能降低相关的直接成本可能有助于解释长距离分散的罕见性。历史上对散布距离的环境驱动因素的关注忽略了个体特征的重要性以及影响运动的特征之间的相关权衡。
Across taxa, individuals vary in how far they disperse, with most individuals staying close to their origin and fewer dispersing long distances. Costs associated with dispersal (e.g., energy, risk) are widely believed to trade off with benefits (e.g., reduced competition, increased reproductive success) to influence dispersal propensity. However, this framework has not been applied to understand variation in dispersal distance, which is instead generally attributed to extrinsic environmental factors. We alternatively hypothesized that variation in dispersal distances results from trade‐offs associated with other aspects of locomotor performance. We tested this hypothesis in the stream salamanderGyrinophilus porphyriticusand found that salamanders that dispersed farther in the field had longer forelimbs but swam at slower velocities under experimental conditions. The reduced swimming performance of long‐distance dispersers likely results from drag imposed by longer forelimbs. Longer forelimbs may facilitate moving longer distances, but the proximate costs associated with reduced swimming performance may help to explain the rarity of long‐distance dispersal. The historical focus on environmental drivers of dispersal distances misses the importance of individual traits and associated trade‐offs among traits affecting locomotion.
登录
查看更多内容
破碎景观中的分散行为：常规还是特殊运动？
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
H. Dyck;M. Baguette
通讯作者：
M. Baguette
DOI：
10.1093/icb/42.1.127
发表时间：
2002-02
期刊：
--
影响因子：
--
作者：
D. Weihs
通讯作者：
D. Weihs
人口统计学和传播参数对阶段结构昆虫入侵空间传播的贡献。
影响因子：
5
作者：
T. Miller;B. Tenhumberg
通讯作者：
B. Tenhumberg
影响因子：
2
作者：
N. Suzuki;M. Nishida;K. Yoseda;C. Üstündağ;T. Şahin;K. Amaoka
通讯作者：
N. Suzuki;M. Nishida;K. Yoseda;C. Üstündağ;T. Şahin;K. Amaoka
影响因子：
2.8
作者：
Langkilde, T;Shine, R
通讯作者：
Shine, R