scholarly journals Genetic Analyses and Simulations of Larval Dispersal Reveal Distinct Populations and Directional Connectivity across the Range of the Hawaiian Grouper (Epinephelus quernus)

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Malia Ana J. Rivera ◽  
Kimberly R. Andrews ◽  
Donald R. Kobayashi ◽  
Johanna L. K. Wren ◽  
Christopher Kelley ◽  
...  
Keyword(s):  
Larval Dispersal ◽  
Hawaiian Islands ◽  
Dispersal Patterns ◽  
Genetic Analyses ◽  
Hawaiian Archipelago ◽  
Control Region Sequences ◽  
High Connectivity ◽  
Hawaiian Grouper ◽  
Mtdna Diversity ◽  
Dispersal Corridor

Integration of ecological and genetic data to study patterns of biological connectivity can aid in ecosystem-based management. Here we investigated connectivity of the Hawaiian grouperEpinephelus quernus, a species of management concern within the Main Hawaiian Islands (MHI), by comparing genetic analyses with simulated larval dispersal patterns across the species range in the Hawaiian Archipelago and Johnston Atoll. Larval simulations revealed higher dispersal from the MHI to the Northwestern Hawaiian Islands (NWHI) than in the opposite direction and evidence for a dispersal corridor between Johnston and the middle of the Hawaiian Archipelago. Genetic analyses using mitochondrial DNA (mtDNA) control region sequences and microsatellites revealed relatively high connectivity across the Hawaiian Archipelago, with the exception of genetically distinct populations and higher mtDNA diversity in the mid-Archipelago. These analyses support the preservation of the mid-archipelago as a source of genetic diversity and a region of connectivity with locations outside the Hawaiian Archipelago. Additionally, our evidence for directional dispersal away from the MHI lends caution to any management decisions that would rely on the NWHI replenishing depleted MHI stocks.

scholarly journals Widespread Dispersal of the Crown-of-Thorns Sea Star,Acanthaster planci, across the Hawaiian Archipelago and Johnston Atoll

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Molly A. Timmers ◽  
Kimberly R. Andrews ◽  
Chris E. Bird ◽  
Marta J. deMaintenton ◽  
Russell E. Brainard ◽  
...  
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
Larval Dispersal ◽  
Hawaiian Islands ◽  
Marine Species ◽  
Sea Star ◽  
Acanthaster Planci ◽  
The West ◽  
Geographic Population ◽  
Hawaiian Archipelago

The population structure of marine species is variable along the Hawaiian Archipelago; thus, it is important to understand dispersal and recruitment patterns for economically and ecologically important taxa to inform Ecosystem-based Management. Connectivity of the coral-eating crown-of-thorns sea star,Acanthaster planci, was examined from Johnston Atoll and 12 locations across the Hawaiian Archipelago. Sequences of mitochondrial DNA from 383 individuals were analyzed to infer patterns of gene flow among the Northwestern Hawaiian Islands (NWHIs), the main Hawaiian Islands, and Johnston Atoll. Population samples were genetically similar across the Hawaiian Archipelago with the exception of the west side of the Big Island of Hawaii, which was significantly differentiated from the majority of Hawaiian samples (pairwise , ). Although differentiated, Hawai`i West shares haplotypes with every other site across the Hawaiian Archipelago. Johnston Atoll was genetically distinct from every location (pairwise , ) except French Frigate Shoals (, ), supporting connectivity between the central NWHIs and Johnston Atoll. Taken together with the lack of geographic population structure and haplotypes shared among all populations, these results indicate widespread larval dispersal with few restrictions to gene flow along the archipelago.

scholarly journals High Connectivity in the Deepwater Snapper Pristipomoides filamentosus (Lutjanidae) across the Indo-Pacific with Isolation of the Hawaiian Archipelago

PLoS ONE ◽  
2011 ◽  
Vol 6 (12) ◽  
pp. e28913 ◽  
Author(s):  
Michelle R. Gaither ◽  
Shelley A. Jones ◽  
Christopher Kelley ◽  
Stephen J. Newman ◽  
Laurie Sorenson ◽  
...  
Keyword(s):  
Hawaiian Archipelago ◽  
High Connectivity

Orsonwelles, a new genus of giant linyphiid spiders (Araneae) from the Hawaiian Islands

2002 ◽  
Vol 16 (3) ◽  
pp. 369 ◽  
Author(s):  
G. Hormiga
Keyword(s):  
Type Species ◽  
New Genus ◽  
Hawaiian Islands ◽  
Morphological Characters ◽  
Hawaiian Archipelago ◽  
Web Architecture ◽  
Island Endemics ◽  
Close Relatives

The Hawaiian spider genus Orsonwelles, gen. nov. (Araneae : Linyphiidae) is described. All Orsonwelles species are single island endemics: Kauai harbours six species; Oahu has three; Molokai has two; and Maui and Hawaii have one species each. The thirteen species included in Orsonwelles are described and illustrated: O. torosus (Simon), comb. nov., O. malus, sp. nov., O. calx, sp. nov., O. ventus, sp. nov., O. bellum, sp. nov. and O. iudicium, sp. nov. from Kauai; O. polites, sp. nov. (the type species), O. ambersonorum, sp. nov. and O. arcanus, sp. nov. from Oahu; O. othello, sp. nov. and O. macbeth, sp. nov. from Molokai; O. falstaffius, sp. nov. from Maui; and O. graphicus (Simon), comb. nov. from Hawaii. A total of 55 morphological characters (plus one behavioural character) were scored for twelve taxa (four Orsonwelles species plus eight linyphiid outgroups) to test the monophyly of the genus using cladistic methods. The most parsimonious cladograms provide robust character support for the monophyly of Orsonwelles. A single colonisation of the Hawaiian archipelago is hypothesised to explain the presence of these species in the Hawaiian Islands. This genus represents a case of insular gigantism (these are the largest linyphiids described), although the close relatives of Orsonwelles remain unknown. Their web architecture is also described and illustrated.

scholarly journals Bibliographic Catalogue of the Marine Benthic Algae in the Papahānaumokuākea Marine National Monument (Northwestern Hawaiian Islands)

Phytotaxa ◽  
2014 ◽  
Vol 167 (1) ◽  
pp. 35 ◽  
Author(s):  
ROY T. TSUDA
Keyword(s):  
Hawaiian Islands ◽  
Algal Species ◽  
Benthic Algae ◽  
Hawaiian Archipelago ◽  
The Third ◽  
National Monument ◽  
Northwestern Hawaiian Islands ◽  
Reference Index ◽  
Reference Section

The algal bibliographic catalogue of the Papahānaumokuākea Marine National Monument (PMNM) is based on previously published records for the 10 northwestern islands, atolls and shoals in the Hawaiian Archipelago, and includes, aligned from northwest to southeast, Kure Atoll (90 species), Midway Atoll (123 species), Pearl & Hermes Atoll (74 species), Lisianski Island including Neva Shoals (52 species), Laysan Island (131 species), Maro Reef (79 species), Gardner Pinnacles (75 species), French Frigate Shoals including La Pérouse Pinnacle (173 species), Necker Island (118 species) and Nihoa Island (33 species). The first section (I. Classification) provides a listing of classes, orders, and families of the 148 genera reported from the PMNM. The second section (II. Species-Reference Index) provides an alphabetized listing of the 335 algal species under the four Phyla, i.e., Cyanobacteria (18 species), Rhodophyta (198 species), Ochrophyta (45 species) and Chlorophyta (74 species) with the applicable reference citations for each island, atoll or shoal. Brief notes are provided, when appropriate, for selected species. The third section (III. Island-Reference Index) provides a chronological listing of all published algal references for each respective island, atoll or shoal. The Reference section contains the complete citation for each reference.  

scholarly journals Reef-fish larval dispersal patterns validate no-take marine reserve network connectivity that links human communities

Coral Reefs ◽  
2017 ◽  
Vol 36 (3) ◽  
pp. 791-801 ◽  
Author(s):  
Rene A. Abesamis ◽  
Pablo Saenz-Agudelo ◽  
Michael L. Berumen ◽  
Michael Bode ◽  
Claro Renato L. Jadloc ◽  
...  
Keyword(s):  
Reef Fish ◽  
Larval Dispersal ◽  
Marine Reserve ◽  
Network Connectivity ◽  
Dispersal Patterns ◽  
Reserve Network

scholarly journals The Mitochondrial DNA Landscape of Modern Mexico

Genes ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1453
Author(s):  
Martin Bodner ◽  
Ugo A. Perego ◽  
J. Edgar Gomez ◽  
Ricardo M. Cerda-Flores ◽  
Nicola Rambaldi Migliore ◽  
...  
Keyword(s):  
Forensic Application ◽  
Dispersal Patterns ◽  
Mt Dna ◽  
Genetic Studies ◽  
Control Region Sequences ◽  
European Colonization ◽  
Distinct Frequency ◽  
Pan American ◽  
Linguistic Groups ◽  
The Impact

Mexico is a rich source for anthropological and population genetic studies with high diversity in ethnic and linguistic groups. The country witnessed the rise and fall of major civilizations, including the Maya and Aztec, but resulting from European colonization, the population landscape has dramatically changed. Today, the majority of Mexicans do not identify themselves as Indigenous but as admixed, and appear to have very little in common with their pre-Columbian predecessors. However, when the maternally inherited mitochondrial (mt)DNA is investigated in the modern Mexican population, this is not the case. Control region sequences of 2021 samples deriving from all over the country revealed an overwhelming Indigenous American legacy, with almost 90% of mtDNAs belonging to the four major pan-American haplogroups A2, B2, C1, and D1. This finding supports a very low European contribution to the Mexican gene pool by female colonizers and confirms the effectiveness of employing uniparental markers as a tool to reconstruct a country’s history. In addition, the distinct frequency and dispersal patterns of Indigenous American and West Eurasian clades highlight the benefit such large and country-wide databases provide for studying the impact of colonialism from a female perspective and population stratification. The importance of geographical database subsets not only for forensic application is clearly demonstrated.

scholarly journals Molecular taxonomy of endemic coastal Ligia isopods from the Hawaiian Islands: re-description of L. hawaiensis and description of seven novel cryptic species

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7531
Author(s):  
Carlos A. Santamaria
Keyword(s):  
Cryptic Species ◽  
Species Delimitation ◽  
Molecular Taxonomy ◽  
Hawaiian Islands ◽  
Nuclear Gene ◽  
Morphological Differentiation ◽  
Taxonomic Revision ◽  
Hawaiian Archipelago ◽  
Genetic Lineages ◽  
Molecular Characters

Past phylogeographic work has shown Ligia hawaiensis, a coastal isopod species endemic to the Hawaiian Islands, to be a paraphyletic complex of several highly genetically divergent yet morphologically cryptic lineages. Despite the need for a taxonomic revision of this species, the lack of morphological differentiation has proven an impediment to formally describe new Ligia species in the region. Molecular characters and species delimitation approaches have been successfully used to formally describe cryptic species in other crustacean taxa, suggesting they may aid taxonomic revisions of L. hawaiensis. Herein, various distance- and tree-based molecular species delimitation approaches are applied on a concatenated dataset comprised of both mitochondrial and nuclear gene sequences of L. hawaiensis and L. perkinsi, a terrestrial species endemic to the Hawaiian archipelago. Results of these analyses informed a taxonomic revision leading to the redescription of L. hawaiensis and the description of seven new cryptic species on the basis of molecular characters: L. dante, L. eleluensis, L. honu, L. kamehameha, L. mauinuiensis, L. pele, and L. rolliensis. These coastal Ligia species from the Hawaiian archipelago appear to be largely limited to single islands, where they appear largely constrained to volcanic rift zones suggesting allopatric events at local scales may drive diversification for poorly dispersing organisms in the Hawaiian coastlines. Additional work remains needed to fully assess the role of said events; however, the description of these novel species underscore their potential to aid in studies of local diversification of marine organisms in Hawai‘i. Lastly, this represents the first application of molecular taxonomic approaches to formally describe genetic lineages found in Ligia isopods as species, underscoring the promise these methods hold to taxonomic revisions in other species in the genus shown to harbor cryptic genetic lineages.

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