Is It in the Stars? Exploring the Relationships between Species’ Traits and Sea Star Wasting Disease
Is It in the Stars? Exploring the Relationships between Species’ Traits and Sea Star Wasting Disease
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DOI：
10.1086/722800
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发表时间：
2022-12
期刊：
影响因子：
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通讯作者：
L. M. Schiebelhut;Melina Giakoumis;R. Castilho;Valentina E. Garcia;J. Wares;G. Wessel;M. Dawson
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文献类型：
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作者：
L. M. Schiebelhut;Melina Giakoumis;R. Castilho;Valentina E. Garcia;J. Wares;G. Wessel;M. Dawson
海星衰减症在不同小行星物种之间的影响差异的解释仍然难以捉摸。尽管各种特征被认为在海星损耗的易感性中发挥了潜在的作用，但目前我们缺乏一个彻底的比较来探索生活史和自然历史特征如何影响不同小行星类群对大规模死亡的反应。为了探索小行星特征如何与海星损耗有关，利用现有数据并认识到生物相关性受系统发育驱动的可能性，我们创建了一棵超树，测试了特性的系统发育关联，并评估了特性与海星损耗影响之间的关联。我们的分析没有证据表明系统发生与海星的损耗影响有关，但似乎确实存在小行星生活史特征的子集，包括饮食、底物和繁殖季节的系统发生联系。我们发现海星损耗与发育模式、食物、浮游幼体历时或底物无关，但与最小水深、繁殖季节和粗糙度(或表面复杂性)有关。海星损耗影响最大的物种往往具有较浅的最小深度分布，它们的中位繁殖期往往提前1.5个月，相对于受海星损耗影响较小的物种，它们往往具有更高的繁殖率。完全了解海星的消亡仍然具有挑战性，部分原因是我们对小行星的基本生物学和系统发育的理解仍然存在巨大的差距。未来的研究将受益于对海星更有力的系统发育了解，以及利用种内和种间比较转录组学和基因组学来阐明应对海星损耗的分子途径。
An explanation for variation in impacts of sea star wasting disease across asteroid species remains elusive. Although various traits have been suggested to play a potential role in sea star wasting susceptibility, currently we lack a thorough comparison that explores how life-history and natural history traits shape responses to mass mortality across diverse asteroid taxa. To explore how asteroid traits may relate to sea star wasting, using available data and recognizing the potential for biological correlations to be driven by phylogeny, we generated a supertree, tested traits for phylogenetic association, and evaluated associations between traits and sea star wasting impact. Our analyses show no evidence for a phylogenetic association with sea star wasting impact, but there does appear to be phylogenetic association for a subset of asteroid life-history traits, including diet, substrate, and reproductive season. We found no relationship between sea star wasting and developmental mode, diet, pelagic larval duration, or substrate but did find a relationship with minimum depth, reproductive season, and rugosity (or surface complexity). Species with the greatest sea star wasting impacts tend to have shallower minimum depth distributions, they tend to have their median reproductive period 1.5 months earlier, and they tend to have higher rugosities relative to species less affected by sea star wasting. Fully understanding sea star wasting remains challenging, in part because dramatic gaps still exist in our understanding of the basic biology and phylogeny of asteroids. Future studies would benefit from a more robust phylogenetic understanding of sea stars, as well as leveraging intra- and interspecific comparative transcriptomics and genomics to elucidate the molecular pathways responding to sea star wasting.