Individual differences in reproductive costs examined using multi-state methods
Individual differences in reproductive costs examined using multi-state methods
复制标题
DOI：
10.1111/j.1365-2656.2010.01789.x
复制
发表时间：
2011-03-01
影响因子：
4.8
通讯作者：
Coulson, Tim
中科院分区：
文献类型：
--
作者：
Moyes, Kelly;Morgan, Byron;Coulson, Tim
P>1。生活史特征之间的权衡很常见，因为个体必须在多个特征之间分配有限的资源。通常认为繁殖成本很高，导致来年的存活率和繁殖力降低。然而，生活史特征之间通常存在正相关而非负相关。2．在这里，我们使用来自朗姆岛红鹿个体研究的数据集，使用多州标记重捕获方法来研究这些成本在个体之间和不同年龄之间的差异。3。过去繁殖频繁的雌性，次年的生存成本较低，连续两年繁殖的可能性也更大。年龄较大的个体和那些不经常繁殖的个体表现出较高的成本。4．这些结果强调了在检查权衡时考虑异质性和个体质量的重要性，并证明了使用详细的长期数据集来探索使用多状态标记重捕获模型的生活史策略的有效性。
P>1. Trade-offs among life-history traits are common because individuals have to partition limited resources between multiple traits. Reproductive costs are generally assumed to be high, resulting in reduced survival and fecundity in the following year. However, it is common to find positive rather than negative correlations between life-history traits.2. Here, we use a data set from the individual-based study of red deer on the Isle of Rum to examine how these costs vary between individuals and at different ages, using multi-state mark-recapture methodology.3. Females that had reproduced frequently in the past incurred lower costs of reproduction in terms of survival in the following year and were more likely to reproduce in two consecutive years. Older individuals and those that had not reproduced frequently exhibited higher costs.4. These results highlight the importance of considering heterogeneity and individual quality when examining trade-offs and demonstrate the effectiveness of using detailed long-term data sets to explore life-history strategies using multi-state mark-recapture models.