Mitochondrial DNA sequence variation in spiny lobsters: population expansion,panmixia, and divergence |
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| Authors: | Eugenia Naro-Maciel Brendan Reid Katherine E Holmes Daniel R Brumbaugh Meredith Martin Rob DeSalle |
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| Institution: | (1) Biology Department, College of Staten Island, City University of New York, Staten Island, NY 10314, USA;(2) Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY 10024, USA;(3) Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, WI 53706, USA;(4) Center for Biodiversity and Conservation, American Museum of Natural History, New York, NY 10024, USA;(5) Wildlife Conservation Society, PNG Marine Program, Kavieng, New Ireland Province, Papua New Guinea |
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| Abstract: | To investigate population differentiation in a comparative and historical context, segments of the mitochondrial cytochrome
c oxidase subunit I gene and the control region were sequenced in Panulirus argus from nine sites along approximately 1,500 km of the Northern Caribbean Sea (n = 326) and analyzed with respect to available panulirid data. A mismatch analysis and Fu’s F
S test uncovered a signature of historical population expansion around the time of the Last Glacial Maximum. Significant population
structure was not detected in the area. The data supported a hypothesis of panmixia resulting from ongoing larval transport
by ocean currents and historical population expansion. Despite high intraspecific divergence levels at COI within Panulirus argus and several other Panulirus species, genetic species identification through DNA barcoding was feasible using either a modified distance threshold or
a character-based approach. |
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