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dc.contributor.advisorSchizas, Nikolaos V.
dc.contributor.authorLaverde-Castillo, Juan José Antonio
dc.date.accessioned2019-03-11T18:16:49Z
dc.date.available2019-03-11T18:16:49Z
dc.date.issued2018-12-04
dc.identifier.urihttps://hdl.handle.net/handle/20.500.11801/1843
dc.description.abstractThere are no studies on the taxonomy and ecology of the polychaetes from the Caribbean Mesophotic Coral Ecosystems (MCE) and this work represents the first effort to identify and catalog the polychaetes of these ecosystems in the Caribbean. To fill this information gap, several substrata samples were collected using technical diving from several mesophotic localities (between 46-91 m) in Puerto Rico and the U.S. Virgin Islands, between 2007 and 2012. The samples were processed on board, washed on sieves with mesh eye of 1.0 mm and 0.125 mm; sediment and organisms retained were fixed in 95% ethanol, for future studies. In the laboratory, samples were analyzed under the stereo-microscope and specimens belonging to 76 genera (distributed among 34 families) were identified. All of them have been previously reported from marine substrata around the Caribbean, but from other ecosystems. Syllidae was the family best represented across all sampled localities, with the largest number of genera (15) and the highest number of individuals (5,755 or 80.85% of the total recorded fauna). Haplosyllis was the most abundant and most frequently sampled genus in the sampled sites. Bajo de Sico, an MCE on the west coast of Puerto Rico, was the locality with the highest abundance (1,183 individuals), while the extended MCE off La Parguera Natural Reserve, on the southwest coast of Puerto Rico, was the locality with the highest number of genera (59), which seems related to the greater spatial heterogeneity of substrata and the high variety of microhabitats that it offers. The greatest generic diversity and the highest abundances were found in the upper zone (UM) of the mesophotic range (30-60 m) compared to the lower zone (LM) (60-91 m).en_US
dc.description.sponsorshipNOAA awards to the Caribbean Coral Reef Institute (CCRI) of UPRM: NA06NOS4780190, NA10NOS4260223, NA11NOS4260157, and NA11NOS4260184. Sea Grant of Puerto Rico awarded to Nick V. Schizas and Mónica Alfaro, funded partially this project.en_US
dc.language.isoenen_US
dc.subjectHidden Biodiversityen_US
dc.subjectMCEen_US
dc.subjectPolychaetaen_US
dc.subjectPuerto Ricoen_US
dc.subjectU.S. Virgin Islandsen_US
dc.subject.lcshPolychaeta --Classificationen_US
dc.subject.lcshPolychaeta -- Caribbean Areaen_US
dc.subject.lcshSyllidaeen_US
dc.titlePolychaetes (Annelida, Polychaeta) associated with lithic and biogenic substrata in Mesophotic Coral Ecosystems in Puerto Rico and the US Virgin Islandsen_US
dc.typeThesisen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2018 Juan José Antono Laverde-Castilloen_US
dc.contributor.committeeAlfaro, Mónica
dc.contributor.committeeWeil, Ernesto
dc.contributor.representativeSantos, Carlos
thesis.degree.levelM.S.en_US
thesis.degree.disciplineMarine Sciencesen_US
dc.contributor.collegeCollege of Arts and Sciences - Arten_US
dc.contributor.departmentDepartment of Marine Sciencesen_US
dc.description.graduationSemesterSpringen_US
dc.description.graduationYear2019en_US


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