Multiple paths toward repeated phenotypic evolution in the spiny‐leg adaptive radiation (Tetragnatha; Hawai'i)

• DOI: 10.1111/mec.17082
• Publication Date: 2023-07-29T07:55:39Z
• Authors: José Cerca; Darko D. Cotoras; Cindy G. Santander; Vanessa C. Bieker; Leke Hutchins; Jaime Morin‐Lagos; Carlos F. Prada; Susan Kennedy; Henrik Krehenwinkel; Andrew J. Rominger; Joana Meier; Dimitar Dimitrov; Torsten H. Struck; Rosemary G. Gille...
• Keywords: Adaptive Radiation; Lineage (genetic); Maroon

The repeated evolution of phenotypes provides clear evidence for the role natural selection in driving evolutionary change. However, origin can be difficult to disentangle as it arise from a combination factors such gene flow, shared ancestral polymorphisms or mutation. Here, we investigate presence these processes Hawaiian spiny-leg Tetragnatha adaptive radiation, which includes four microhabitat-specialists ecomorphs, with different body pigmentation and size (Green, Large Brown, Maroon, Small Brown). We investigated history this radiation using 76 newly generated low-coverage, whole-genome resequenced samples, along phylogenetic population genomic tools. Considering Green ecomorph state, our results suggest that likely re-evolved once, Brown Maroon ecomorphs evolved twice three times. found involved hybridization events, while through novel mutations, despite high rate incomplete lineage sorting dataset. Our findings demonstrate is influenced by multiple processes.