Unveiling Macroecological Patterns of Elasmobranchs in the Eastern Pacific Ocean

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dc.contributor.authorNavia, Andrés F
dc.contributor.authorAlfaro-Shigueto, Joanna
dc.contributor.authorÁgreda-Arango, Jose
dc.contributor.authorAreano, Elisa
dc.contributor.authorAvalos-Castillo, Cristopher
dc.contributor.authorBizzarro, Jospeh J
dc.contributor.authorBustamante, Carlos
dc.contributor.authorCevallos, Adriana
dc.contributor.authorConcha, Francisco J
dc.contributor.authorCruz-Escalona, Victor H
dc.contributor.authorEbert, David A
dc.contributor.authorEspinoza, Maria
dc.contributor.authorGonzález Leiva, Alberto
dc.contributor.authorGuzmán, Héctor M
dc.contributor.authorHearn, Alex
dc.contributor.authorHleap, José S
dc.contributor.authorMangel, Jefrrey C
dc.contributor.authorMejía-Falla, Paola A
dc.contributor.authorMorales-Saldaña, Jorge M
dc.contributor.authorSantana, Heriberto
dc.contributor.authorSosa-Nishizaki, Oscar
dc.contributor.authorTovar-Ávila, Javier
dc.contributor.authorVélez-Zuazo, Ximena
dc.date.accessioned2026-10-21T19:03:49Z
dc.date.available2026-10-21T19:03:49Z
dc.date.issued2025
dc.description.abstractAimTo examine the species richness, distribution and macroecological patterns of elasmobranch assemblages across a broad latitudinal gradient in the Eastern Pacific Ocean (EPO).LocationThe study area encompasses the Pacific coast of the American continent, spanning from 65 degrees N to 60 degrees S, and extending from the coastline to approximately 1000 km offshore, encompassing the oceanic archipelagos.TaxonElasmobranchs.MethodsUtilising the established distribution ranges of 190 elasmobranch species (comprising 89 sharks and 101 rays), we assessed the richness and spatial distribution of these species across the EPO. Subsequently, three macroecological patterns were scrutinised: Rapoport's rule, the Mid Domain Effect with its association to Mean Sea Surface Temperature, and the correlation between body size and latitudinal distribution.ResultsThe analysis of species richness along latitudinal gradients unveiled a bimodal pattern, reaching peaks between 30 degrees to 20 degrees N and 10 degrees N to 5 degrees S. A decline in species richness was observed from tropical to polar regions. Contrary to Rapoport's Rule, Stevens' and midpoint methods demonstrated higher geographic range values at lower latitudes, diminishing towards higher latitudes. Additionally, the mid-domain effect model exhibited a robust correlation with the mean sea surface temperature. Exploring the interspecific relationship between body size and extent of occurrence, it was found that 29 out of 190 species are more susceptible to extinction.Main ConclusionMarine elasmobranchs of the EPO defy conventional latitudinal richness patterns and deviate from Rapoport's rule. Furthermore, our findings indicate a robust correlation between observed richness and both sea surface temperature and environmental heterogeneity. The proportion of species vulnerable to human or stochastic impacts potentially leading to extirpation in relation to their geographic range was low across the majority of examined provinces.
dc.description.sponsorshipAutoridad Nacional de Acuicultura y Pesca; Instituto Colombiano Agropecuario -ICA-; Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias
dc.identifier.doi10.1111/jbi.15037
dc.identifier.issn0305-0270
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/790
dc.language.isoen
dc.publisherWiley
dc.relation.urihttps://onlinelibrary.wiley.com/doi/epdf/10.1111/jbi.15037?getft_integrator=clarivate&src=getftr&utm_source=clarivate
dc.rights© 2024 John Wiley & Sons Ltd
dc.sourceJournal of Biogeography
dc.subjectmid domain effect
dc.subjectRapoports ruler
dc.subjectrichness and distribution
dc.subjectsharks and rays
dc.subjectvulnerability to extirpation
dc.subjectvulnerability to human impacts
dc.titleUnveiling Macroecological Patterns of Elasmobranchs in the Eastern Pacific Ocean
dc.typeArticle
oaire.citation.volume52
oaire.citationEndPage349
oaire.citationIssue2
oaire.citationStartPage323
organization.identifier.rorhttps://ror.org/04eyc6d95
organization.legalNameUniversidad de Antofagasta
uantof.curation.reviewed2026-11-05
uantof.curation.reviewedByDiego León
uantof.identificator.facultyFacultad de Ciencias del Mar y Recursos Biológicos
uantof.identificator.instituteInstituto de Ciencias Naturales Alexander von Humboldt
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