当前位置: X-MOL 学术Biol. Bull. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Kelp Morphology and Herbivory Are Maintained Across Latitude Despite Geographic Shift in Kelp-Wounding Herbivores
The Biological Bulletin ( IF 1.6 ) Pub Date : 2021-09-08 , DOI: 10.1086/715039
Nicholas P. Burnett 1 , Eric J. Armstrong 1 , Rosemary Romero 1 , Charlotte C. Runzel 1 , Richelle L. Tanner 1
Affiliation  

Herbivores can drastically alter the morphology of macroalgae by directly consuming tissue and by inflicting structural wounds. Wounds can result in large amounts of tissue breaking away from macroalgae, amplifying the damage initially caused by herbivores. Herbivores that commonly wound macroalgae often occur over only a portion of a macroalga’s lifespan or geographic range. However, we know little about the influence of these periodic or regional occurrences of herbivores on the large-scale seasonal and geographical patterns of macroalgal morphology. We used the intertidal kelp Egregia menziesii to investigate how the kelp’s morphology and the prevalence of two prominent kelp-wounding herbivores (limpets and amphipods) changed over two seasons (spring and summer) and over the northern extent of the kelp’s geographic range (six sites from central California to northern Washington). Wounds from limpets and amphipods often result in the kelp’s fronds being pruned (intercalary meristem broken away), so we quantified kelp size (combined length of all fronds) and pruning (proportion of broken fronds). We found similar results in each season: herbivores were most likely to occur on large, pruned kelp regardless of site; and limpets were the dominant herbivore at southern sites, while amphipods were dominant at northern sites. Despite the geographic shift in the dominant herbivore, kelp had similar levels of total herbivore prevalence (limpets and/or amphipods) and similar morphologies across sites. Our results suggest that large-scale geographic similarities in macroalgal wounding, despite regional variation in the herbivore community, can maintain similar macroalgal morphologies over large geographic areas.

中文翻译:

尽管海带伤害食草动物的地理转移,海带形态和食草动物在纬度上保持不变

食草动物可以通过直接消耗组织和造成结构性创伤来彻底改变大型藻类的形态。伤口会导致大量组织从大型藻类中脱离,从而放大最初由食草动物造成的损害。通常伤害大型藻类的食草动物通常只出现在大型藻类寿命或地理范围的一部分。然而,我们对这些周期性或区域性食草动物对大型藻类形态的大规模季节性和地理模式的影响知之甚少。我们使用了潮间带海带Egregia menziesii调查海带的形态和两种主要伤害海带的食草动物(帽贝和片脚类动物)在两个季节(春季和夏季)以及海带地理范围的北部范围(从加利福尼亚中部到华盛顿北部的六个地点)如何变化. 帽贝和片脚类动物的伤口通常会导致海带的叶子被修剪(中间分生组织折断),因此我们量化了海带大小(所有叶子的总长度)和修剪(折断的叶子的比例)。我们在每个季节都发现了类似的结果:食草动物最有可能出现在大的、修剪过的海带上,而不管地点如何;帽贝是南部地区的主要食草动物,而片脚类动物则在北部地区占优势。尽管占主导地位的食草动物的地理转移,海带具有相似的总食草动物流行水平(帽贝和/或片脚类动物)和不同地点的相似形态。我们的结果表明,尽管食草动物群落存在区域差异,但大型藻类伤害的大规模地理相似性可以在大地理区域内保持相似的大型藻类形态。
更新日期:2021-09-08
down
wechat
bug