Narváez-Barandica Juan Carlos, Quintero-Galvis Julián F, Aguirre-Pabón Juan Carlos, Castro Lyda R, Betancur Ricardo, Acero Pizarro Arturo
Centro de Genética y Biología Molecular, Universidad del Magdalena, Carrera 32 No 22-08, Santa Marta 470004, Colombia.
Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5110566, Chile.
Animals (Basel). 2023 Aug 5;13(15):2528. doi: 10.3390/ani13152528.
The comparative phylogeography of marine species with contrasting dispersal potential across the southern Caribbean Sea was evaluated by the presence of two putative barriers: the Magdalena River plume (MRP) and the combination of the absence of a rocky bottom and the almost permanent upwelling in the La Guajira Peninsula (ARB + PUG). Three species with varying biological and ecological characteristics (i.e., dispersal potentials) that inhabit shallow rocky bottoms were selected: (PLD < 6 days), (PLD < 22 days), and (PLD > 60 days). We generated a set of SNPs for the three species using the ddRad-seq technique. Samples of each species were collected in five locations from Capurganá to La Guajira. For the first time, evidence of a phylogeographic break caused by the MRP is provided, mainly for (AMOVA: Φ = 0.420). The ARB + PUG barrier causes another break for (Φ = 0.406) and (Φ = 0.224). Three populations ( = 3) were identified for and , while presented one population ( = 1). The Mantel correlogram indicated that and fit the hierarchical population model, and only the and comparisons showed phylogeographic congruence. Our results demonstrate how the biological traits of these three species and the biogeographic barriers have influenced their phylogeographic structure.
马格达莱纳河羽流（MRP）以及瓜希拉半岛缺乏岩石底部和几乎常年上升流的组合（ARB + PUG）。选择了三种具有不同生物学和生态特征（即扩散潜力）且栖息于浅岩石底部的物种：（浮游幼虫期<6天）、（浮游幼虫期<22天）和（浮游幼虫期>60天）。我们使用ddRad-seq技术为这三个物种生成了一组单核苷酸多态性。每个物种的样本在从卡普尔加尼亚到瓜希拉的五个地点采集。首次提供了由MRP导致的系统地理学断点的证据，主要针对（分子方差分析：Φ = 0.420）。ARB + PUG屏障导致了另一个断点，对于（Φ = 0.406）和（Φ = 0.224）。为和确定了三个种群（= 3），而呈现一个种群（= 1）。曼特尔相关图表明和符合分层种群模型，并且只有和的比较显示出系统地理学一致性。我们的结果证明了这三个物种的生物学特征和生物地理屏障如何影响它们的系统地理结构。
