Contrasted patterns of population genetic structure in two related Spondylus species of the Tropical Eastern Pacific

Contrasted patterns of population genetic structure in two related Spondylus species of the Tropical Eastern Pacific | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 30 January 2026 V1 Latest version Share on Contrasted patterns of population genetic structure in two related Spondylus species of the Tropical Eastern Pacific Authors : Paolo Verger 0009-0006-7616-0328 , Julio COTOM NIMATUJ 0000-0002-6778-2284 , Régis Debruyne 0000-0002-7002-3940 , Jesús MICHEL-MORFÍN 0000-0002-9861-3360 , Johanna Segovia 0000-0001-8548-3790 , Osmar Sandino 0000-0002-7207-5541 , Pedro Jiménez-Prado , Edouard Kraffe , Philippe Béarez , and Cecile Fauvelot 0000-0003-0806-1222 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.176977100.03116781/v1 187 views 83 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Ongoing global change and anthropogenic pressures are increasingly impacting coastal ecosystems, leading to habitat degradation and disrupted connectivity. Along the Tropical Eastern Pacific, multiple habitat discontinuities and oceanographic barriers, such as biogeographic transition zones, sedimentary coastal gaps, and major current systems, limit dispersal in rocky-shore taxa. Despite their cultural and economic importance, research on Tropical Eastern Pacific Spondylus remains geographically limited, underscoring a critical lack of knowledge on their population dynamics, dispersal, genetic diversity, and evolutionary history. Using high-resolution genome-wide SNPs, we revealed pronounced population structure in Eastern Pacific S. limbatus and S. crassisquama, with strong genetic differentiation of Central American populations from Mexican ones, and the Cortesian population from the others in S. limbatus, whereas S. crassisquama exhibited a similar but weaker pattern, primarily structured by the Southern California Bight. This study provides the first comparative genomic analysis of population structure in both species, with important implications for conservation, as genetically distinct management units must be recognized to ensure the sustainable management of these ecologically and economically important bivalves. Supplementary Material File (verger_etal_ms_ee.docx) Download 11.88 MB Information & Authors Information Version history V1 Version 1 30 January 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords genetics invertebrate marine molecular genetics Authors Affiliations Paolo Verger 0009-0006-7616-0328 Institut de recherche pour le développement View all articles by this author Julio COTOM NIMATUJ 0000-0002-6778-2284 MNHN View all articles by this author Régis Debruyne 0000-0002-7002-3940 MNHN View all articles by this author Jesús MICHEL-MORFÍN 0000-0002-9861-3360 Universidad de Guadalajara View all articles by this author Johanna Segovia 0000-0001-8548-3790 Universidad Francisco Gavidia View all articles by this author Osmar Sandino 0000-0002-7207-5541 Fauna & Flora Nicaragua View all articles by this author Pedro Jiménez-Prado The Nature Conservancy View all articles by this author Edouard Kraffe Université de Bretagne Occidentale Faculté des Sciences et Techniques View all articles by this author Philippe Béarez MNHN View all articles by this author Cecile Fauvelot 0000-0003-0806-1222 [email protected] Sorbonne Université View all articles by this author Metrics & Citations Metrics Article Usage 187 views 83 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Paolo Verger, Julio COTOM NIMATUJ, Régis Debruyne, et al. Contrasted patterns of population genetic structure in two related Spondylus species of the Tropical Eastern Pacific. Authorea . 30 January 2026. DOI: https://doi.org/10.22541/au.176977100.03116781/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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