A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910)
We investigated the population structure of the North Pacific giant octopus, Enteroctopus dofleini (Wülker, 1910) in Alaskan waters. Octopuses were collected from five locations (Dutch Harbor [DH; n = 45], Kachemak Bay [KB; n = 45], Prince William Sound [PWS; n = 18], Glacier Bay [GB; n = 33], and S...
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fthighwire:oai:open-archive.highwire.org:mollus:79/2/133 2023-05-15T16:20:41+02:00 A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) Barry, Patrick D. Tamone, Sherry L. Tallmon, David A. 2013-05-01 00:00:00.0 text/html http://mollus.oxfordjournals.org/cgi/content/short/79/2/133 https://doi.org/10.1093/mollus/eyt006 en eng Oxford University Press http://mollus.oxfordjournals.org/cgi/content/short/79/2/133 http://dx.doi.org/10.1093/mollus/eyt006 Copyright (C) 2013, The Malacological Society of London Research Papers TEXT 2013 fthighwire https://doi.org/10.1093/mollus/eyt006 2013-05-28T05:25:32Z We investigated the population structure of the North Pacific giant octopus, Enteroctopus dofleini (Wülker, 1910) in Alaskan waters. Octopuses were collected from five locations (Dutch Harbor [DH; n = 45], Kachemak Bay [KB; n = 45], Prince William Sound [PWS; n = 18], Glacier Bay [GB; n = 33], and Stephen's Passage [SP; n = 39]). All samples were sequenced at the cytochrome oxidase I (COI) locus of the mitochondrial genome. We identified two major mtDNA haplogroups. Sequence divergence ranged from 0.2 to 2.9%. Haplotypes were not distributed evenly among the sampled populations, producing an enigmatic pattern of population structure. We observed no genetic differentiation between DH, KB and GB, or between PWS and SP. F ST was extremely high for all other pairwise comparisons, ranging from 0.871–0.948. We did not observe an isolation-by-distance pattern or a strong clinal gradient in haplotype frequencies, as typically detected in other marine species. Strong genetic drift, serial bottlenecks or sweepstakes events may contribute to the pattern observed. The high level of sequence divergence observed at the COI locus could also suggest cryptic species within the E. dofleini complex, with limited geographical overlap of populations and gene flow. Additional samples were contributed by researchers from British Columbia [ n = 1], Seaside, Oregon [ n = 4], Neah Bay, Washington [ n = 2], Puget Sound, Washington [ n = 1], and Kodiak Island, Alaska [ n = 2)] While sample sizes were low for these locations, prompting their exclusion from population based analyses, all individuals were of the predominate haplotype found in Alaska. Text glacier Kachemak Kodiak Alaska HighWire Press (Stanford University) Glacier Bay Pacific Journal of Molluscan Studies 79 2 133 138 |
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Research Papers Barry, Patrick D. Tamone, Sherry L. Tallmon, David A. A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) |
topic_facet |
Research Papers |
description |
We investigated the population structure of the North Pacific giant octopus, Enteroctopus dofleini (Wülker, 1910) in Alaskan waters. Octopuses were collected from five locations (Dutch Harbor [DH; n = 45], Kachemak Bay [KB; n = 45], Prince William Sound [PWS; n = 18], Glacier Bay [GB; n = 33], and Stephen's Passage [SP; n = 39]). All samples were sequenced at the cytochrome oxidase I (COI) locus of the mitochondrial genome. We identified two major mtDNA haplogroups. Sequence divergence ranged from 0.2 to 2.9%. Haplotypes were not distributed evenly among the sampled populations, producing an enigmatic pattern of population structure. We observed no genetic differentiation between DH, KB and GB, or between PWS and SP. F ST was extremely high for all other pairwise comparisons, ranging from 0.871–0.948. We did not observe an isolation-by-distance pattern or a strong clinal gradient in haplotype frequencies, as typically detected in other marine species. Strong genetic drift, serial bottlenecks or sweepstakes events may contribute to the pattern observed. The high level of sequence divergence observed at the COI locus could also suggest cryptic species within the E. dofleini complex, with limited geographical overlap of populations and gene flow. Additional samples were contributed by researchers from British Columbia [ n = 1], Seaside, Oregon [ n = 4], Neah Bay, Washington [ n = 2], Puget Sound, Washington [ n = 1], and Kodiak Island, Alaska [ n = 2)] While sample sizes were low for these locations, prompting their exclusion from population based analyses, all individuals were of the predominate haplotype found in Alaska. |
format |
Text |
author |
Barry, Patrick D. Tamone, Sherry L. Tallmon, David A. |
author_facet |
Barry, Patrick D. Tamone, Sherry L. Tallmon, David A. |
author_sort |
Barry, Patrick D. |
title |
A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) |
title_short |
A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) |
title_full |
A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) |
title_fullStr |
A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) |
title_full_unstemmed |
A complex pattern of population structure in the North Pacific giant octopus Enteroctopus dofleini (Wulker, 1910) |
title_sort |
complex pattern of population structure in the north pacific giant octopus enteroctopus dofleini (wulker, 1910) |
publisher |
Oxford University Press |
publishDate |
2013 |
url |
http://mollus.oxfordjournals.org/cgi/content/short/79/2/133 https://doi.org/10.1093/mollus/eyt006 |
geographic |
Glacier Bay Pacific |
geographic_facet |
Glacier Bay Pacific |
genre |
glacier Kachemak Kodiak Alaska |
genre_facet |
glacier Kachemak Kodiak Alaska |
op_relation |
http://mollus.oxfordjournals.org/cgi/content/short/79/2/133 http://dx.doi.org/10.1093/mollus/eyt006 |
op_rights |
Copyright (C) 2013, The Malacological Society of London |
op_doi |
https://doi.org/10.1093/mollus/eyt006 |
container_title |
Journal of Molluscan Studies |
container_volume |
79 |
container_issue |
2 |
container_start_page |
133 |
op_container_end_page |
138 |
_version_ |
1766008636115517440 |