Show simple item record

dc.contributor.advisorSchizas, Nikolaos V.
dc.contributor.authorCruz-Ramos, Mariel A.
dc.description.abstractThe bearded fireworm Hermodice carunculata is an important predator invertebrate in tropical and subtropical Atlantic, including the Mediterranean. There is limited data on the genetic population structure of H. carunculata because of taxonomic uncertainties regarding the status of allopatric populations as the same or as distinct species. We revisited this issue with 200 new polychaete specimens from over 20 locations around the wider Caribbean, Eastern Atlantic Ocean and Mediterranean Sea. The mitochondrial markers Cytochrome C Oxidase subunit I (COI) and Cytochrome b (Cytb) from individual polychaetes were sequenced to examine the standing diversity. Results indicate significant genetic structure amongst the Caribbean H. carunculata, including those from Gulf of Mexico and Florida (Wider Caribbean), compared to those from the eastern Atlantic (Canary Islands) and eastern Mediterranean (Greece and Malta). Also, significant genetic structure was observed between Brazil and the eastern Atlantic and Mediterranean. The analyses of these two mitochondrial markers corroborate the hypothesis of one Atlantic species of Hermodice carunculata.en_US
dc.description.abstractEl gusano barbudo de fuego Hermodice carunculata es un invertebrado y depredador importante en el Atlántico tropical y subtropical, incluyendo al Mediterráneo. Existe muy poca información sobre la estructura genética de las poblaciones de Hermodice carunculata debido a las dudas taxonómicas relacionados a su posición de poblaciones alopátricas como única especie o especies diferentes. Este hecho fue revisado con 200 nuevos poliquetos provenientes de 20 localidades alrededor del gran Caribe, Atlántico Occidental y el Mar Mediterráneo. Los marcadores mitocondriales Cytocromo C Oxidasa subunidad I (COI) y Cytochromo b (Cytb) de los individuos de poliquetos fueron sequenciado para examinar la diversidad actual. Los resultados indican una estructura genética significativa entre las poblaciones de H. carunculata del Caribe incluyendo a los del Golfo de México y la Florida (Gran Caribe), en comparación con aquellos del Atlántico Oriental (Islas Canarias) y el Este del Mediterráneo (Grecia y Malta). También se observaron estructuras genéticas significativas entre Brasil con el Atlántico Occidental y el Mediterráneo. Los análisis de estos dos marcadores genéticos comprueban la existencia de una sola especie de H. carunculata para el Atlántico.en_US
dc.description.sponsorshipSeed Moneyen_US
dc.subjectGenetic diversityen_US
dc.subjectPopulation subdivision,en_US
dc.subjectAmphiatlantic distributionen_US
dc.titlePopulation structure of the fireworm Hermodice carunculata in the wider Caribbean, Atlantic and Mediterranean Seaen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2017 Mariel Angelique Cruz Ramosen_US
dc.contributor.committeeWeil, Ernesto
dc.contributor.committeeAlfaro, Monica
dc.contributor.representativeSeijo Vidal, Roberto L. Sciencesen_US
dc.contributor.collegeCollege of Arts and Sciences - Sciencesen_US
dc.contributor.departmentDepartment of Marine Sciencesen_US

Files in this item


This item appears in the following Collection(s)

  • Theses & Dissertations
    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a graduate degree at UPR-Mayagüez.

Show simple item record

All rights reserved
Except where otherwise noted, this item's license is described as All Rights Reserved