<em>Acropora cf. tenuis</em> sample photos from: Contrasting patterns of seascape genetics in <em>Acropora cf. tenuis</em> and their symbiotic algae

Theory suggests that pairs of mutualist species will often co-disperse and share the same dispersal patterns, though the extent to which this happens remains unclear. Photosynthetic corals constitute an example of this dynamic, as they rely on algal symbionts to meet their energetic needs, yet many acquire their symbionts environmentally after their larval dispersal phase. Consequently, corals and their symbionts may exhibit similar or contrasting patterns of genetic variation across the seascape, with implications for their evolutionary and ecological processes. Here, we densely sample corals of the key reef-building taxon Acropora cf. tenuis and their algal symbionts across a reefscape in the central Philippines to examine genetic variation across space. Four distinct coral taxa show genetic evidence of long-distance dispersal, including weak or absent isolation by distance signals and parent-offspring pairs at widely spaced sites. These coral taxa all host a single group of algal sym..., Field sampling was conducted from January to April 2016 across 47 sites in the Visayas region of the central Philippines, including areas surrounding the Camotes Sea and Cebu Strait. Sites were distributed across Cebu Province, including Cebu Island (n = 27 sites) and the Camotes Islands (n = 5), as well as Leyte Province (n = 15). Sites were selected to be approximately 10 km apart to capture ecologically relevant dispersal distances and enable testing for isolation by distance patterns in the study region. At each site, we characterized benthic cover using line point intercept transects. Three 15 m transects were deployed haphazardly parallel to shore, and the bottom type was recorded at 20 cm intervals along each transect. Following benthic surveys, we collected tissue samples from Acropora cf. tenuis colonies at each site. To locate colonies, we conducted a separate belt transect survey at each site by swimming parallel to shore within a 2 m wide belt for approximately one hour or u..., # *Acropora cf. tenuis* sample photos from: Contrasting patterns of seascape genetics in *Acropora cf. tenuis* and their symbiotic algae Dataset DOI: [10.5061/dryad.sf7m0cgnr](https://doi.org/10.5061/dryad.sf7m0cgnr) ### Files and variables #### File: McManusFieldPhotos.tar.gz **Description:**Â This is a gzipped directory of sample photographs captured in the field. All photos were captured between January and April of 2016 and depict corals of the taxon *Acropora cf. tenuis*. All photos represent corals that were sampled and genetically sequenced. **File structure:** Image files are organized into directories based on their sampling site. Directories beginning with CEB\_ correspond to sites on the island of Cebu, and directories beginning with LEY\_ correspond to sites on the island of Leyte. Each directory contains image files for corals sampled at that site. Most coral samples have two associated photos: one showing the entire coral growth form, and one showing a close-up view ..., ,理论研究表明，互利共生的物种种对通常会共同扩散并共享一致的扩散模式，但目前尚不明确这种情况发生的普遍程度。造礁光合珊瑚便是这一动态关系的典型例证：它们依赖藻类共生体（algal symbionts）满足自身能量需求，但多数珊瑚会在幼体扩散阶段后从环境中获取共生体。因此，珊瑚与其共生体在海洋景观中可能表现出相似或截然不同的遗传变异模式，这对二者的演化与生态过程具有重要启示意义。 本研究在菲律宾中部的礁体景观中对关键造礁类群轴孔珊瑚未定种（*Acropora* cf. *tenuis*）及其藻类共生体进行高密度采样，以探究空间尺度下的遗传变异情况。四种不同的珊瑚类群均存在长距离扩散的遗传证据，包括微弱或不存在的距离隔离（isolation by distance）信号，以及在相距甚远的采样点间发现的亲子对。 野外采样于2016年1月至4月期间在菲律宾中部米沙鄢地区的47个采样点开展，覆盖卡莫特斯海与宿务海峡周边区域。采样点分布于宿务省（含宿务岛27个采样点、卡莫特斯群岛5个采样点）以及莱特省（15个采样点）。采样点间距设置为约10公里，以覆盖具有生态意义的扩散距离，并可用于检验研究区域内的距离隔离模式。 在每个采样点，我们采用样线点截法（line point intercept transects）对底栖生物覆盖度进行调查：随机布设3条平行于岸线的15米样带，沿每条样带以20厘米间隔记录底质类型。底栖生物调查完成后，我们从每个采样点的轴孔珊瑚未定种（*Acropora* cf. *tenuis*）群落中采集组织样本。为定位珊瑚群落，我们在每个采样点开展独立的带样带调查：在宽度为2米的带区内平行于岸线游泳约1小时，或…… # 轴孔珊瑚未定种（*Acropora* cf. *tenuis*）样本照片来源：《轴孔珊瑚未定种与其共生体的海洋景观遗传模式差异》 数据集DOI：[10.5061/dryad.sf7m0cgnr](https://doi.org/10.5061/dryad.sf7m0cgnr) ### 文件与变量 #### 文件：McManusFieldPhotos.tar.gz **文件说明：** 本文件为野外采集的样本照片gzip压缩包。所有照片拍摄于2016年1月至4月，均为轴孔珊瑚未定种（*Acropora* cf. *tenuis*）的样本照片，且均来自已完成采样与基因测序的珊瑚个体。 **文件结构：** 图像文件按照采样站点所在目录进行组织：以CEB_开头的目录对应宿务岛的采样点，以LEY_开头的目录对应莱特岛的采样点，每个目录内包含对应采样点所采集珊瑚的照片文件。 多数珊瑚样本配有两张关联照片：一张展示珊瑚完整的生长形态，另一张为特写视图……