Cryptic Diversity in Scorpaenodes xyris (Jordan & Gilbert 1882) (Scorpaeniformes: Scorpaenidae) Throughout the Tropical Eastern Pacific.

Autor: Bernal-Hernández ME; Laboratorio de Biología Acuática, Universidad Michoacana de San Nicolás de Hidalgo, Francisco Javier Mujica S/N, 58030, Morelia, Michoacán, Mexico.; Programa Institucional de Maestría en Ciencias Biológicas, Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico., Beltrán-López RG; Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Morelos, Universidad No. 1001, 62209, Cuernavaca, Morelos, Mexico.; Programa Institucional de Doctorado en Ciencias Biológicas, Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico., Robertson DR; Smithsonian Tropical Research Institute, Balboa, Republic of Panama., Baldwin CC; Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, 20560, USA., Espinoza E; Dirección del Parque Nacional Galápagos, Puerto Ayora, Islas Galápagos, Ecuador., Martínez-Gómez JE; Instituto de Ecología A. C. (INECOL), C.P. 91073, Xalapa, Veracruz, Mexico., Barraza E; Dirección de Ecosistemas y Biodiversidad, Ministerio de Medio Ambiente y Recursos Naturales, Col. y Calle Las Mercedes, San Salvador, El Salvador., Angulo A; Escuela de Biología, Museo de Zoología, Centro de Investigación en Biodiversidad y Ecología Tropical (CIBET), y Centro de Investigación en Ciencias del Mar y Limnología (CIMAR), Universidad de Costa Rica, San Pedro de Montes de Oca, 11501-2060, San José, Costa Rica., Valdiviezo-Rivera J; Instituto Nacional de Biodiversidad, Pje. Rumipamba N. 341, Quito, Ecuador., Acosta AFG; Centro Interdisciplinario de Ciencias Marinas (CICIMAR), Instituto Politécnico Nacional, Pesquerías y Biología Marina, 23096, La Paz, Baja California Sur, Mexico., Domínguez-Domínguez O; Laboratorio de Biología Acuática, Universidad Michoacana de San Nicolás de Hidalgo, Francisco Javier Mujica S/N, 58030, Morelia, Michoacán, Mexico. goodeido@yahoo.com.mx.; Instituto Nacional de Biodiversidad, Pje. Rumipamba N. 341, Quito, Ecuador. goodeido@yahoo.com.mx.
Jazyk: angličtina
Zdroj: Journal of molecular evolution [J Mol Evol] 2024 Nov 16. Date of Electronic Publication: 2024 Nov 16.
DOI: 10.1007/s00239-024-10212-w
Abstrakt: The tropical eastern Pacific (TEP) is a biogeographic region with a substantial set of isolated oceanic islands and mainland shoreline habitat barriers, as well as complex oceanographic dynamics due to major ocean currents, upwelling areas, eddies, and thermal instabilities. These characteristics have shaped spatial patterns of biodiversity between and within species of reef and shore fishes of the region, which has a very high rate of endemism. Scorpaenodes xyris, a small ecologically cryptic reef-dwelling scorpionfish, is widely distributed throughout the TEP, including all the mainland reef areas and all the oceanic islands. This wide distribution and its ecological characteristics make this species a good model to study the evolutionary history of this type of reef fish across the breadth of a tropical biogeographical region. Our evaluation of geographic patterns of genetic (mitochondrial and nuclear) variation shows that S. xyris comprises two highly differentiated clades (A and B), one of which contains four independent evolutionary subunits. Clade A includes four sub-clades: 1. The Cortez mainland Province; 2. The Revillagigedo Islands; 3. Clipperton Atoll; and 4. The Galapagos Islands. Clade B, in contrast, comprises a single unit that includes the Mexican and Panamic mainland provinces, plus Cocos Island. This geographical arrangement largely corresponds to previously indicated regionalization of the TEP. Oceanic distances isolating the islands have produced much of that evolutionary pattern, although oceanographic processes likely have also contributed.
Competing Interests: Declarations Conflict of interest The authors declare no conflict of interest.
(© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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