DOI: 10.5061/dryad.n21f4
title: Data from: Colonization and demographic expansion of freshwater fauna across the Hawaiian Archipelago

description: It is widely accepted that insular terrestrial biodiversity progresses
 with island age because colonization and diversification proceed over
 time. Here we assess whether this principle extends to oceanic island
 streams. We examined range-wide mtDNA sequence variation in four
 stream-dwelling species across the Hawaiian archipelago to characterize
 the relationship between colonization and demographic expansion, and to
 determine whether either factor reflects island age. We found that
 colonization and demographic expansion are not related and that neither
 correspond to island age. The snail Neritina granosa exhibited the oldest
 colonization time (~2.713 mya) and time since demographic expansion (~282
 kya), likely reflecting a preference for lotic habitats most prevalent on
 young islands. Conversely, gobioid fishes (Awaous stamineus, Eleotris
 sandwicensis and Sicyopterus stimpsoni) colonized the archipelago only
 ~0.411-0.935 mya, suggesting ecological opportunities for colonization in
 this group were temporally constrained. These findings indicate that
 stream communities form across colonization windows, underscoring the
 importance of ecological opportunities in shaping island freshwater
 diversity.
description: Sample and sequence data
 information for Awaous stamineusExcel file including
 sample data information for the 2229 cytochrome-b sequences (512bp) of
 Awaous stamineus from Hawaii analyzed in Alda et al. Sample ID, Year of
 collection, Watershed, Islands, Hawaiian Division of Aquatic Resources
 (DAR) Code, Sequence name.Awaous_stamineus_cytb_n2229.xlsxNexus file including 2229 cytochrome-b sequences (512bp) of Awaous stamineusNexus file including 2229 cytochrome-b sequences (512bp) of Awaous stamineus from Hawaii analyzed in Alda et al.Awaous_stamineus_cytb_n2229.nexSample and sequence data information for Eleotris sandwicensisExcel file including sample data information for the 497 cytochrome-b sequences (943bp) of Eleotris sandwicensis from Hawaii analyzed in Alda et al. Sample ID, Year of collection, Watershed, Islands, Hawaiian Division of Aquatic Resources (DAR) Code, Sequence name.Eleotris_sandwicensis_cytb_n497.xlsxNexus file including 497 cytochrome-b sequences (943bp) of Eleotris sandwicensisNexus file including 497 cytochrome-b sequences (943bp) of Eleotris sandwicensis from Hawaii analyzed in Alda et al.Eleotris_sandwicensis_cytb_n497.nexSample and sequence data information for Sicyopterus stimpsoniExcel file including sample data information for the 110 cytochrome-b sequences (430bp) of Sicyopterus stimpsoni from Hawaii analyzed in Alda et al. Sample ID, Year of collection, Watershed, Islands, Hawaiian Division of Aquatic Resources (DAR) Code, Sequence name.Sicyopterus_stimpsoni_cytb_n110.xlsxNexus file including 110 cytochrome-b sequences of Sicyopterus stimpsoni from Hawaii analyzedNexus file including 110 cytochrome-b sequences (430bp) of Sicyopterus stimpsoni from Hawaii analyzed in Alda et al.Sicyopterus_stimpsoni_cytb_n110.nexSample and sequence data information for Neritina granosaExcel file including sample data information for the 606 cytochrome-c oxidase I (578bp) of Neritina granosa from Hawaii analyzed in Alda et al. Sample ID, Year of collection, Watershed, Islands, Hawaiian Division of Aquatic Resources (DAR) Code, Sequence name.Neritina_granosa_coi_n606.xlsxNexus file including 606 cytochrome-c oxidase I of Neritina granosaNexus file including 606 cytochrome-c oxidase I (578bp) of Neritina granosa from Hawaii analyzed in Alda et al.Neritina_granosa_coi_n606.nexSample and sequence data information for Sicyopterus stimpsoniExcel file including sample data information for the 818 cytochrome-b sequences (612bp) of Sicyopterus stimpsoni from Hawaii analyzed in Alda et al. Sample ID, Year of collection, Watershed, Islands, Hawaiian Division of Aquatic Resources (DAR) Code, Sequence name.Sicyopterus_stimpsoni_coi_n818.xlsxNexus file including 818 cytochrome-b sequences of Sicyopterus stimpsoniNexus file including 818 cytochrome-b sequences (612bp) of Sicyopterus stimpsoni from Hawaii analyzed in Alda et al.Sicyopterus_stimpsoni_coi_n818.nex