Mountains and islands provide an opportunity for studying the biogeography of diversification and population fragmentation. Aotearoa (New Zealand) is an excellent location to investigate both phenomena due to alpine emergence and oceanic separation. While it would be expected that separation across oceanic and elevation gradients are major barriers to gene flow in animals, including aquatic insects, such hypotheses have not been thoroughly tested in these taxa. By integrating population genomic from subgenomic Anchored-Hybrid Enrichment sequencing, ecological niche modeling, and morphological analyses from scanning-electron microscopy, we show that tectonic uplift and oceanic vicariance are implicated in speciation and population structure in Kapokapowai (Uropetala) dragonflies. Although Te Moana o Raukawa (Cook Strait) is likely responsible for some of the genetic structure observed, speciation has not yet occurred in populations separated by the strait. We find that the altitudinal gradient across K & amacr; Tiritiri-o-te-Moana (the Southern Alps) is not impervious, but it significantly restricts gene flow between the aforementioned species. Our data support the hypothesis of an active colonization of K & amacr; Tiritiri-o-te-Moana by the ancestral population of Kapokapowai, followed by a recolonization of the lowlands. These findings provide key foundations for the study of lineages endemic to Aotearoa.
- Elevational and oceanic barriers shape the distribution, dispersal, and diversity of Aotearoa's Kapokapowai (Uropetala) dragonflies
- Ethan R. Tolman - American Museum of Natural HistoryChristopher D. Beatty - American Museum of Natural HistoryAaron Goodman - The Graduate Center, CUNYPriscilla Ramchand - Brooklyn CollegeTara McAllister - Te Whare Wānanga o AwanuiārangiKelly Reyes - American Museum of Natural HistoryAkifa Zahara - American Museum of Natural HistoryKassandra Taveras - American Museum of Natural HistoryVincent Wade - American Museum of Natural HistoryJohn Abbott - University of AlabamaSeth Bybee - Brigham Young UniversityRobert Guralnick - Florida Museum of Natural HistoryKathleen M. Harding - Electronic Arts (United States)Manpreet K. Kohli - American Museum of Natural HistoryPaul B. Frandsen - Brigham Young UniversityJessica Ware - American Museum of Natural HistoryAnton Suvorov - Virginia Tech
- Evolution, Vol.79(10), pp.2219-2235
- Oxford Univ Press
- 17
- Maxwell/Hanrahan Award from the American Museum of Natural History Graduate Student Research Award from the Society of Systematic Biologists 2002432; 2002473; 2002457; 2002489 / National Science Foundation (NSF) Awards; National Science Foundation (NSF) Tow Undergraduate and Graduate International Research Stipends from The City University of New York Brooklyn College
- 99631557804331
- Manawa Whenua; Te Manawahoukura
- English
- Journal article